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Document:	Operators Hardware Device and Maintenance Guide Jun88
Order Number:	AA-KZ39A-TK
Revision:	0
Pages:	128
Original Filename:	AA-KZ39A-TK_Operators_Hardware_Device_and_Maintenance_Guide_Jun88.pdf

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TOPS-10/TOPS-.20
Operator's Hardware Device
and Maintenance Guide
AA-KZ39A-TK

June 1988
This new guide describes the operation and maintenance of
the major available peripheral devices that can be connected
to the TOPS-1 0 and TOPS-20 series hardware systems.
The material in this guide was previously included in the
TOPS-10 Operator's Guide, order number AA-H283B-TB, and
the TOPS-20 Operator's Guide, order number AA-FP80A-TM.

OPERATING SYSTEMS: TOPS-10 Version 7.04
TOPS-20 Version 7.0
SOFTWARE:

TOPS-10 GALAXY Version 5.1
TOPS-20 GALAXY Version 6.0

digital equipment corporation
maynard, massachusetts

First Printing, June 1988

The information in this document is subject to change without notice and should
not be construed as a commitment by Digital Equipment Corporation. Digital
Equipment Corporation assumes no responsibility for any errors that may appear
in this document.
The software described in this document is furnished under a license and may be
used or copied only in accordance with th~ terms of such license.
No responsibility is assumed for the use or reliability of software on equipment
that is not supplied by Digital Equipment Corporation or its affiliated companies.
Copyright © 1988 Digital Equipment Corporation
All Rights Reserved.
Printed in U.S.A.
The Reader's Comments form on the last page of this document requests the
user's critical evaluation to assist in preparing future documentation.
The following are trademarks of Digital Equipment Corporation:

CI
DDCMP
DEC
DECmaii
DECnet
DECnet-VAX
DECserver
DECserver 100
DECserver 200
DECsystem-10
DECSYSTEM-20

DECtape
DECUS
DECwriter
DELNI
DELUA
HSC
HSC-50
KA10
KI
KL10
KS10

LA50
LN01
LN03
MASSBUS
PDP
PDP-11124
PrintServer
PrintServer 40
Q-bus
ReGIS
RSX

SITGO-10
TOPS-10
TOPS-20
TOPS-20AN
UNIBUS
UETP
VAX
VAXNMS
VT50

~BmBDmDTM

CONTENTS

PREFACE
MAINTENANCE OVERVIEW
CHAPTER 1
1.1
1.1.1
1.1.2
1.1.3
1.1.4
1.2
1.2.1
1.2.2
1.2.3
1.2.4
1.3
1.3.1
1.3.2
1.3.3
1.3.4
1.4
1.5
1.6
1.6.1
1.6.2
1.6.3
1.6.4
1.7
1.7.1
1.7.2
1.7.3
1.7.4
CHAPTER 2
2.1
2.2
2.3
CHAPTER 3
3.1
3.2
CHAPTER 4
4.1
4.1.1
4.1.2
4.1.3
4.1.4
4.1.5
4.1.6
4.2

PRINTERS
1-1
LP05, LP14, LP26, AND LP27 PRINTERS
. . . . .
1-1
Control Panels . . . . . . . . . .
Changing Paper and Forms . . . . . .
· 1-7
1-11
Controlling the vertical Format Unit . .
Changing and Reversing the Ribbon
. . . . 1-11
LP07 PRINTER . . . . . . .
. . . . . . . . . 1-14
1-14
Control Panel
. . . . . . . . . . .
1-17
Changing Paper and Forms . . . . . .
1-21
Controlling the vertical Format Unit .
1-22
Changing and Reversing the Ribbon
1-24
LP10 PRINTER . . . . . . .
Control Panel
. . . . . . . . . . . . . . . . 1-24
1-27
Changing Paper and Forms . . . . . . . .
Controlling the vertical Format Unit . .
1-29
Changing and Reversing the Ribbon
. . . . 1-32
1-34
CLEANING A LINE PRINTER . . . . . . . . .
CONTROLLING THE TOPS-20 CHARACTER TRANSLATION RAM 1-34
LNOl LASER PRINTER . . . . .
1-35
1-35
Control Panel
. . . . . . . . . . . .
Loading Paper . . . . . . . . . . . .
1-37
Controlling the vertical Format unit . .
1-38
Checking and Adding Dry Imager .
1-38
LN03 LASER PRINTER . . . . . . . . . . . . . . . 1-40
1-40
Indicator Panel
. . . . . . . . . . .
1-42
Loading Paper . . . . . . . . . . .
Replacing the Toner Ca:rtridge and Cleaning Pad 1-43
1-52
Replacing the Toner Collection Bottle
CARD READERS
LIGHTS AND SWITCHES
. . . .
LOADING AND UNLOADING CARDS
CLEANING THE CARD READER . .

· 2-1
. . . . . 2-4
. . 2-4

DECTAPES (TOPS-10 ONLY)
MOUNTING AND DISMOUNTING DECtapes
CLEANING DECtape DRIVES
. . . . .

3-1
· 3-2

MAGNETIC TAPES
MAGNETIC TAPE CONTROLS AND INDICATORS
TU16 (TOPS-10 Only)
TU40 (TOPS-10 Only)
TU45
. . . .
TU70
.... .
TU77
.......... .
TU78/79
. . . . . .
MOUNTING AND DISMOUNTING MAGTAPES
iii

...
·
......
·

4-1
4-1
4-4
4-7
4-8
4-11
4-14
4-16

4.2.1
4.2.2
4.2.3
4.2.4
4.2.5
4.3
CHAPTER 5
5.1
.5.1.1
5.1.2
.5.1.3
5.1.4
5.1.5
5.1.6
5.2
5.2.1
5.2.2
5.2.3
5.3
5.3.1
5.3.2
5.3.3
5.4
5.4.1
5.4.1.1
5.4.2
5.4.3
5.4.4
5.5
5.5.1
5.5.2
5.5.3
5.5.4
5.6
CHAPTER 6

TU16 Procedures (TOPS-10 Only) . . . . .
TU40 and TU41 Procedures (TOPS-10 Only)
TU70, TU71, and TU72 Procedures
TU45 Procedures
. . . . . . . . . .
TU77 and TU78/79 Procedures
CLEANING MAGNETIC TAPE DRIVES
. . . .

4-16
4-17
4-17
4-18
4-19
4-23

DISK DRIVES
DISK DRIVE CONTROLS AND INDICATORS . . . . . . · . 5-1
RP02 and RP03 (TOPS-10 Only)
· . . . . . 5-1
RP04 and RP06
. . . . . . . .
· 5-3
RM03
... .
· 5-6
RP20
..... .
· . . . . . 5-9
RP07
.... .
· . . . . 5-10
CI (HSC50, RA60, and RA81)
· . . . . 5-13
MOUNTING AND DISMOUNTING DISK PACKS
5-13
RP02, RP03, RP04, or RP06 Procedures . . . . . 5-13
RM03 Disk Pack Procedures
. . . . . 5-14
RA60 Disk Pack Procedures
5-15
POWERING UP AND POWERING DOWN DISK SYSTEMS
5-15
RP20 Procedures
. . . . . . . . .
5-15
RP07 Procedures
. . . . . . . . . . . . . . . 5-16
HSC50 Disk Controller Procedures
. . . . . 5-16
STARTING AND STOPPING DISK DRIVES
. . . . . 5-17
RP20 Disk Drive Procedures . . . . . . . .
5-17
Switching an RP20 Disk Drive between Systems 5-18
Starting an RP07 Disk Drive
. . . . . . 5-18
Stopping an RP07 Disk Drive
. . . . . . . 5-18
RA60 and RA81 Procedures . . .
5-18
FORMATTING DISK PACKS
. . . . .
· . . . . 5-19
RP02s and RP03s with TOPS-I0 DCRPE .
5-19
Formatting RP02s and RP03s with TOPS-10 DDRPC
5-21
Formatting RP04s and RP06s with TOPS-10 DDRPI
5-24
Formatting RP04s and RP06s on TOPS-20
5-24
CLEANING DISK DRIVES .
. . . . . . . . . . 5-26
FLOPPY DISKS

6.1
6.2

INSERTING AND REMOVING FLOPPY DISKS
HANDLING FLOPPY DISKS
. . . . . . .

1-1
1-2
1-3
1-4
1-5
1-6
1-7
1-8
1-9
1-10
1-11
1-12
1-13
1-14

LP05 Line Printer
....
· . 1-3
LP14 Line Printer
. . . .
· . 1-4
LP26 Line Printer . . . .
. . . . . . . 1-5
LP27 Line Printer . . . .
· . 1-6
LP05 or LP14 Paper Installation
· . . . . . 1-8
LP05 or LP14 Forms Alignment . .
· . 1-9
LP26 Paper Installation . . . . . . . .
1-10
LP27 Paper Installation . . . .
1-10
LP05, LPI4, LP26 or LP27 Rib~on Installation
1-13
LP07 Line Printer
. . ..
....
1-15
LP07 Paper Installation
. . . . . . . . 1-18
LP07 Forms Alignment . . .
. . . . . . . . 1-19
LP07 Ribbon Installation .
1-24
LP10 Line Printer
. . . . .
1-26

. . . 6-1
· 6-1

INDEX
FIGURES

1-15
1-16
1-17
1-18
1-19
1-20
1-21
1-22
1-23
1-24
1-25
1-26
1-27
1-28
1-29
1-30
1-31
2-1
2-2
3-1
4-1
4-2
4-3
4-4
4-5
4-6
4-7
5-1
5-2
5-3
5-4
5-5
5-6
5-7
6-1

LP10 Paper Installation . . . . . . . . . . . .
1-28
LP10 Ribbon Installation .
. . . . . . 1-33
LN01 Laser Printer .
. . . .
1-36
LN01 Paper Cassette
. . . . . . . . . 1-37
LN01 Access Door . .
1-38
Adding Dry Imager to the Hopper
. . . .
1-39
LN03 Indicator Panel . . . . .
. . . . 1-41
LN03 Paper Tray
1-42
LN03 Development Drawer
. . . . .
1-44
LN03 Toner Cartridge . . .
1-45
LN03 Toner Cartridge Hopper Notches
1-46
LN03 Toner Cartridge Release Tab . . . . . . . . 1-47
LN03 Paper Exit Cover Release Lever
1-48
LN03 Paper Exit Cover Lock Lever . .
1-49
LN03 Fusing unit Cover Locking Tabs
1-50
LN03 Cleaning Pad
. . . . . . . . . .
1-51
LN03 Toner Collection Bottle
1-52
CR10-E Card Reader . .
. . . . . . . . . 2-2
CR10-F Card Reader . . . .
. . . 2-3
TU56 DECtape Transport .
. . . 3-2
TU16 Magnetic Tape Drive .
. . 4-4
TU40 Series Magnetic Tape Drive
. 4-6
TU45 Magnetic Tape Drive . . . . .
. . . . . 4-8
TU70 Series Magnetic Tape Drive
. . . .
4-10
TU77 Magnetic Tape Drive . . .
4-13
TU77, TU78, or TU79 Loading Methods
4-21
TU77, TU78, or TU79 Tape Path and Controls.
4-22
RP03 Disk Drive
. . . ..
. . . . . . . . . . 5-2
RP04 Disk Drive
. . 5-4
RP06 Disk Drive
. . . . . . . . . .
. 5-5
RM03 Disk Drive
. . . .
. 5-8
RP20 Disk Drive
. . . .
. . . . 5-10
RP07 Disk Drive
. . . .
5-12
TOPS-10 SHOW SYSTEM Output . .
5-17
Floppy Disk
. . . .
. . . 6-2

1-1
1-2
4-1
4-2
4-3
4-4
4-5
4-6
4-7

Standard LP10 Line Printer Carriage Tape . .
1-30
Standard LP10 Line Printer Vertical Action .
1-32
TU16 Switches
. . . . 4-2
TU16 Indicators
. . . 4-3
TU70 Series Controls and Indicators
. . . 4-9
TU77 Controls
4-11
TU77 Indicators
4-12
TU78/79 Controls.
. ....... .
4-14
4-14
TU78/79 Indicators . .

TABLES

PREFACE

The TOPS-I0/TOPS-20 Operator's Hardware Device and Maintenance Guide
describes the operation and maintenance of---"the major available
peripheral devices that can be connected to the TOPS-I0 and 'TOPS-20
series
hardware
systems.
Each chapter describes a different
peripheral line device.
This guide is written for experienced TOPS-I0 and TOPS-20 operators.
SYNOPSIS
Chapter 1, "Printers," describes the operation and maintenance of the
LP05, LP07, LPI0, LP14, LP26, LP27 line printers and the LNOI and LN03
laser printers.
Chapter 2, "Card Readers," describes the operation and maintenance
the CRI0-E and CRI0-F model card readers.

Chapter 3, "DECtapes," describes the operation and maintenance of TU56
DECtape drives.
Chapter 4, "Magnetic Tapes," describes the operation and maintenance
of the TU16,
TU40,
TU45,
TU70,
TU71,
TU72, TU77, TU78, and TU79
magnetic tape drives.
Chapter 5,
the RP02,
drives.

"Disk Drives," describes the operation and maintenance of
RP03,
RP04,
RP06,
RM03, RP07, RP20, RA60, and RA81 disk

Chapter 6, "Floppy Disks," describes the operation and maintenance
floppy disks.

CONVENTIONS USED IN THIS GUIDE
This guide uses the following conventions:
Convention

Meaning

TTY

Terminal.

<RET>

Press the RETURN key.

Hold the CTRL key down while you type the
character.

UNDERSCORED
UPPERCASE PRINT

In command examples, anything that you type.

vii

MANUALS REFERENCED

The following manuals are referred to in this manual:
o

TOPS-IO Operator's Guide

TOPS-20 Operator's Guide

LNOI Programmer Reference Manual

LNOI Electronic Printer Installation Guide

LNOI Electronic Printer Operator Guide

Installing and Using the LN03A

LN03 Programmer Reference Manual

TOPS-IO Software Installation Guide

TOPS-20 KL Model B Installation Guide

HSCSO User's Guide

RA60 Disk Drive User's Guide

RA80 Disk Drive User's Guide

RA81 Disk Drive User's Guide

viii

MAINTENANCE OVERVIEW

It is important to know how to operate the peripheral equipment on
your system and how to keep it in the best possible condition.
This
guide discusses the necessary procedures.
Because most equipment operates more efficiently when kept clean, each
chapter details a specific cleaning procedure for each device.
There
are, however, some general rules for cleaning.
First of all,
the
computer room should be kept as neat and clean as possible.
Second,
you should have the following cleaning supplies available:
1.

91% isopropyl alcohol

Lint-free wipers

Spray cleaner

Vacuum cleaner with rubber or plastic attachments, which
blow air as well as take in air

Cotton-tipped applicators

Soft suede brush

can

You should clean the exterior of all equipment weekly.
Vacuum all
outside surfaces including cabinet tops.
Use spray cleaner on all
exposed surfaces except around switches.
In general, do not clean the interior of any equipment unless so
directed in the following chapters;
your DIGITAL Field Service
Representative does that job.
Specific instructions for cleaning line
printers and magnetic tape drives are given in Sections 1.4, 3.2 and
4.3.

Always be careful not to bump or change the position of any switches,
because this could cause the system or the device to crash.
Likewise,
when you are cleaning the exterior of any disk drives, be careful not
to jar the equipment; that could cause a serious hardware head crash.
Last, if you ever have any problem or doubts concerning the operation
or cleaning procedure for a device, consult your DIGITAL Field Service
Representative.

CHAPTER 1
PRINTERS

This chapter describes procedures for operating and maintaining line
printers and laser printers.
Printers that have similar functions and
controls are grouped together in the sections that follow.
Be sure to
follow the procedures for the appropriate printer.

1.1

LPOS, LP14, LP26, AND LP27 PRINTERS

Sections 1.1.1 through 1.1.4 describe the physical characteristics and
maintenance procedures for LP05, LP14, LP26, and LP27 line printers.

1.1.1

Control Panels

The LP05, LP14, LP26, and LP27 line printers are
appearance and have the same hardware controls.

very

similar

The operator control panel is located on the top right of the
and is illustrated in the following figures:
Printer

Figure

LP05

1-1

LP14

1-2

LP26

1-3

LP27

1-4

printer

The control panel contains error indicator lights,
push-button
switch/indicator lights,
and toggle switches.
Main power to the
printer is supplied by a circuit breaker located at lower right
beneath the main gate.
When this is turned on, the POWER ON indicator
will light (green).
The following list describes all switches and
indicator lights.
ALARM (indicator)

- Lights red when a fault condition exists.

CLEAR (switch) - When a
fault condition has been corrected,
pressing CLEAR will clear master printer logic and cause the
ALARM indicator to go out.
READY (indicator)
READY is lit.

- Printer is ready to be

1-1

placed

on-line

when

PRINTERS

ON/OFF LINE (switch/indicator) - Pressing this switch will place
the line printer either on- or off-line.
When on-line, the
printer is under control of the user system.
PAPER STEP - Causes the paper to advance one line
when printer is off-line).

(enabled

only

TOP OF FORM - Causes the paper to advance to top of form (enabled
only when the printer is off-line).
FORMS RESET - Press down in order to use the COARSE VERTICAL FORM
ADJUSTMENT control.
6-8 LPI - Selects either six or eight lines per inch vertical
spacing.
Six lines per inch is the more common setting.
One or more of the six red error indicator lights are lit when any
the following error conditions exist:
HAMMER -

A print hammer is not operating properly.

FORMAT The number of line feeds executed and
feed commands do not match.

number

RIBBON The ribbon is not advancing properly due to failure
reverse, or due ·to a snag, or motor problem.
GAT.E -

The drum gate is not latched.

PAPER -

No paper, torn paper, or paper runaway problem.

TAPE: -

Parity error in the VFU memory.

Clear these lights by correcting the problem
CLEAR switch.

1-2

and

then

pressing

line
to

the

PRINTERS

HAMMER
FORMAT
RIBBON
GATE
PAPER
TAPE

ALARM
POWER
ON
CLEAR
READY

ON/OFF
LINE

PAPER
STEP
TOP
OF FORM

FORMS
RESET

•

6lPI

8lPI

Figure 1-1:

LP05 Line Printer
1-3

PRINTERS
HAMMER
FORMAT
RIBBON
GATE
PAPER
TAPE

POWER ON
ALARM CLEAR
READY
ON/OFF LINE

TOP
OF FORM

FORMS I
RESET ,

•
•

6LPl
8LPl

Figure 1-2:

LP14 Line Printer
1-4

PRINTERS

POWER
INDICATOR

•

POWER

PHASE

EXTERNAL.L.Y
ACCESSIBL.E
SWITCHI
INDICATOR

MR·S·4454·S6

Figure 1-3:

LP26 Line Printer
1-5

PRINTERS

~m
fORMS LENGTH

I'LS V~U

D
srUUS

~§
[;;]~

BB
IP;::: I IFO~S ]
~r;;;;;;:sJ

~
~

MR-S-4455-86

Figure 1-4:

LP27 Line Printer

1-6

PRINTERS
1.1.2

Changing Paper and Forms

The following procedure describes paper or forms
installation,
alignment,
and adjustment on an LP05, LP14, LP26 or LP27 line printer
(Figures 1-5, 1-6, 1-7 and 1-B) .
1.

Press the ON/OFF-LINE switch
(indicator not lit) .

set

the

printer

Lift the printer cover.

Using the drum gate latch, unlatch and fully
gate.

off-line

open

the

drum

CAUTION
wait for the character drum to stop
before you proceed.

rotating

Press and release the TOP OF FORM switch.
advance to the top-of-form position.

The tractors

will

Open the spring-loaded pressure plates on the tractors.

Place paper in the tractors and close the pressure plates.

Loosen both paper-width adjustment guides and move both
tractors
laterally
to adjust for correct paper-width.
Tighten the paper-width adjustment guides.

If necessary, align the perforations in the paper above the
print line index (Figure 1-6) by depressing the FORMS RESET
switch and rotating the tractor shaft by using the COARSE
VERTICAL FORM ADJUSTMENT control.
Then release the FORMS
RESET switch.

Adjust the horizontal position of the paper
HORIZONTAL FORM ADJUSTMENT control.
Use the
indentation index marks as a guide.

with
the
horizontal

10.

Close and latch the drum gate.

11.

Press ALARM/CLEAR switch.

12.

Press and release the ON/OFF LINE switch to set
on-line (indicator lit) .

13.

Use the FINE VERTICAL FORM ADJUSTMENT control to correct
small misalignment in the printout during operation.

14.

Close the printer cover.

the

printer
any

Occasionally, the paper will jam in the line printer. When the paper
jams,
the printer goes off-line.
If this happens, repeat Steps 2, 3,
and 5 through 10.
Then press the TOP OF FORM switch.
Requeue the
printer job and press the ON/OFF-LINE switch.

1-7

PRINTERS
PRINT COVER

PAPER TENSIONER
PLUNGER KNOB

PAPER WIDTH
ADJUSTMENT

PAPER TENSIONER
BLOCK

FINE VERTICAL
FORM ADJUSTMENT

COARSE VERTICAL
FORM ADJUSTMENT
7093-3

Figure 1-5:

LP05 or LP14 Paper Installation

1-8

PRINTERS
PAPER PERFORATION

EXAMPLE:

~-----t- - - PRINT LINE

r'I'I-'Ti-,I

L 11 !.-. U -

I' I-i ." = = = =
0'
:
,

. .==:;::::;::::;:::;:=;:::::;=;=;::=t~ I

I. .

1 INCH

FIRST COLUMN

PRINT LINE
INDEX

® LEFT MARGIN INDEX
MR-S-618-80

may be horizontally positioned to provide left margins up
® Thepaper
to two inches wide.
The example shows paper properly ins·t.alled for a 1/2-inch top mar® gin
(top-of-form spacing) and a one-inch left margin.
The print line index shows the location of the center of the print
© line
hammer .bank.
MR-S-612-80

Figure 1-6:

LP05 or LP14 Forms Alignment

1-9

PRINTERS

SPROCKETS AND
SPROCKET COVERS

SPROCKET
LOCKS

PAPER FEED
RELEASE LEVER

rv"RS-4448-86

Figure 1-7:

LP26 Paper Installation

TRACTOR COVERS
(UPPER)

FORMS
ADJUSTMENT
CONTROL

TRACTOR COVERS
(LOWER)

PAPER TENSION
CONTROL KNOB
CS-2600

Figure 1-8:

LP27 Paper Installation

1-10

PRINTERS

Replenishing Forms
If you are merely replenishing forms and not changing to
form, proceed as follows:
1.

Lift the printer window.

Using the drum gate latch, unlatch and fully
gate.

open

different

the

drum

CAUTION
wait for the character drum to stop
before you proceed.

rotating

Open all tractor pressure plates.

Insert the new form, overlapping the old one by at least one
page and aligning the two at the page perforations.
Close
all tractor pressure plates.

Close and latch the drum gate.

Close the printer window.

Press the ON/OFF-LINE switch to set the printer
LINE indicator lit).

1.1.3

on-line

(ON

Controlling the vertical Format unit

A vertical format unit (VFU) controls the paper advance through the
printer.
The LP05,
LP14, LP26 and LP27 line printers have a direct
access vertical format unit (DAVFU), which is controlled by software.
The operating system loads this software.

1.1.4

Changing and Reversing the Ribbon

The following procedures describe how to change the
LP14, LP26, and LP27 line printers (Figure 1-9) .

ribbon

Use the plastic gloves supplied with the ribbon.

Press the ON/OFF LINE switch to place
(indicator not lit).

Lift the printer cover.

Using the drum gate latch, unlatch and fully
gate.

the

printer

open

LP05,

off-line

the

drum

CAUTION
wait until the next character drum stops
rotating before proceeding to next step.
5.

While holding the paper tensioner with one hand,
pull the
paper tensioner plunger knob to your left and remove the
paper tensioner from the drum gate.

1-11

PRINTERS

Grasp the right end (fixed ribbon holders)
of the top and
bottom ribbon cores and push left against the floating holder
springs; pull the right end of the ribbon cores away from the
drum gate first.

Remove the new ribbon from its packing
plastic wrapping.

Place the fully wound ribbon core over the top floating
ribbon holder.
The ribbon must be installed so that it
unwinds from the top of the ribbon core.

Push the ribbon core end toward your left against the
floating ribbon-holder spring, and place the opposite ribbon
core end over the top fixed ribbon holder.
Be sure that the
holder guide-pin slips into the core end slot.

box

remove

Unwind the second ribbon core and bring
character drum and ribbon guide bars.

11.

Place the ribbon core on the bottom ribbon holders as in Step
9, for the top ribbon core.

12.

Install the paper tensioner by placing the paper tensioner
block in position and pushing the tensioner against the
tensioner knob, while pulling the knob to allow engagement.

13.

Close the drum gate and press the ALARM/CLEAR switch.

14.

Press the ON/OFF-LINE switch to
(indicator lit) .

the

down

printer

over

the

10.

place

and

the

on-line

Most listings have more print on the left half of the paper.
Therefore,
to prevent the ribbon from wearing unevenly, you should
reverse the ribbon using the following procedure:
1.

Follow Steps 1 through 6 above to remove the ribbon.

Holding the two ribbon cores as you took them off the
printer,
rotate them clockwise until the top core is at the
bottom.

Now that you have reversed the top and bottom ribbon cores,
put the ribbon back on the printer by following Steps 9
through 14 above.

1-12

PRINTERS
DRUM GATE
LATCH

FIXED RIBBON HOLDER
(2 PLACES)
FLOATING RIBBON HOLDER
(2 PLACES)

PAPER TENSIONER
PAPER TENS lONER
PLUNGER KNOB

Figure 1-9:

MR-S-615-80

LP05, LP14, LP26 or LP27 Ribbon Installation

1-13

PRINTERS
1.2

LP07 PRINTER

Sections 1.2.1 through 1.2.4 describe the physical characteristics and
maintenance procedures for the LP07 line printer.

1.2.1

Control Panel

The LP07 control panel is on top of the printer at the left. Controls
for normal operation are visible;
other controls are covered by a
metal plate which can be lifted. The control panel is illustrated in
Figure 1-10.
The panel contains switches
(two-position),
white
indicator lights, red error lights and two dial knobs.
From the
bottom up, these controls are as follows:
START/STOP Switch - Places the printer
comes ON) or takes it off-line.

on-line

(the

RUN

light

SINGLE CYCLE Switch - Permits printing of one line at a time each
,time the START/STOP switch is pressed.
TOP OF FORM Switch - with the printer off-line,
depressing the
TOP OF FORM switch causes the paper and/or the carriage control
loop to position themselves at the top of a page ready for
printing.
CHECK CLEAR Switch - After an error condition has been corrected,
pressing this switch clears the error lights.
RUN Indicator - This
STARTed.

lit

when

the

printer

READY

and

READY Indicator - When lit, there are no error conditions,
the
printer can be placed on-line.
If this light fails to come on,
there is a paper fault or Charaband problem.
POWER ON Indicator - When lit, the power
position.

1-14

switch

the

PRINTERS

Figure 1-10:

LP07 Line Printer
1-15

PRINTERS

ERROR LIGHTS
Whenever an error condition occurs, such as running out of paper,
VFU
error,
or a problem with the Charaband, the RUN and READY lights go
out. At this time one of the red error lights below may come on.
GATE CHECK Indicator - The gate is open and must be closed before
printing can commence.
This may also indicate a Charaband
problem.
FORMS CHECK Indicator - The printer is out of paper,
paper motion has occurred.

runaway

PRINT CHECK Indicator
There is an electrical malfunction,
hammer problem, or one of the OVERRIDE switches is set.
DATA CHECK Indicator - There is a PARITY or HAMMER cooling error,
or the SINGLE CYCLE or DATA CHECK OVERRIDE is set.
To turn these lights off, correct the problem and hit the CHECK
Switch.

CLEAR

MAINTENANCE CONTROLS
These consist of three switches and an indicator light.
Setting any
of these switches allows certain error conditions to be overridden.
For example, PRINT INHIBIT deactivates the hammer firing mechanism, so
that printer functions can occur without paper being loaded.
DATA
CHECK OVERRIDE allows the printer to disregard the IDENTIFIER code on
the Charaband.
These switches are essentially for Field Service use.
CHECK CONDITIONS
These eleven small, red error indicator lights are sub-conditions of
the four large error indicator lights discussed above.
Their meaning
is in many cases self-explanatory.
INTERLOCKS lights
if
the
RUN/ADJUST CLUTCH is open, or the VFU cover is open.
OTHER CONTROLS and SWITCHES
POWER Switch - Powers the printer ON and OFF.
PRINT RATE Switch - The printer can operate at both high and low
speeds.
Make certain the POWER switch is OFF before changing the
speed.
PENETRATION CONTROL Knob - Increasing the penetration causes the
printer hammers to fire with more force.
The penetration should
be increased when printing forms with multiple or carbon copies.
Check the quality of the bottom copy before proceeding with the
entire print job.
PHASING CONTROL Knob - This equalizes t~e right-to-left density
of the characters;
the adjustment ~s necessary when you have
changed the penetration or Charaband speed.

1-16

PRINTERS
1.2.2

Changing Paper and Forms

The following procedure describes how to install forms,
align them,
and adjust the paper on an LP07 line printer.
(See Figures 1-11 and
1-12. )
1.

If the printer is running, press the START/STOP switch to
place the printer in STOP mode (RUN indicator is not lit).

Lift the printer window.

Unlatch and fully open the band gate and ribbon mask.
CAUTION
wait until the Charaband stops
before proceeding to the next step.

rotating

If necessary, reposition the upper and lower left forms
tractors. Make sure that they are still vertically aligned.

Unlock the
tractors.

Open all tractor pressure plates.

Insert the left edge of the form in the
and close the pressure plate.

Slide the upper right tractor to a position beneath the right
hand form feed holes and close the pressure plate.
Lock the
upper right tractor.

Loosen the PAPER TENSION control lock and set the PAPER
TENSION control to its extreme counterclockwise position
(least tension) .

upper

and

lower

tractor

locks

the

upper

left

right

tractor

10.

Insert form in the lower left tractor and close the
plate.

11.

Slide the lower right tractor to a position beneath the right
hand form-feed holes and close the pressure plate.
Lock the
lower right tractor.

12.

Adjust the PAPER TENSION control clockwise to achieve proper
vertical form tension.
Proper tension occurs when there is a
slight crease on the top edge of the form-feed holes.
Tighten the PAPER TENSION lock.

13.

Press the TOP OF FORM switch on the operator control panel.

1-17

pressure

PRINTERS

UPPER TRACTORS

UPPER
RIBBON
MOTOR

LOWER
RIBBON
MOTOR
HORIZONTAL FORMS
ALIGNMENT SCALE

Figure 1-11:

LP07 Paper Installation

1-18

HORIZONTAL
PAPER POSITION

PRINTERS
PAPER TENSION
LLOCK
CO

8402-3

HORIZONTAL PAPER
POSITION CONTROL

Figure 1-12:

6/8 LINES
PER INCH
CONTROL AND
ENTRY SWITCHES

LP07 Forms Alignment

1-19

PRINTERS

14.

Rotate the PAPER FEED clutch clockwise to the ADJ position
and use the PAPER ADVANCE ADJUSTMENT control to position the
form at the first line of print. Use the hammer faces as a
print-line guide. Return the clutch to the RUN position.
You can use the VERTICAL PAPER POSITION control to obtain a
finer adjustment of vertical position.
This may be necessary
when using pre-printed forms.

15.

Close and latch the ribbon mask.

16.

Rotate the HORIZONAL PAPER POSITION control to align the form
horizontally; use the horizontal forms alignment scale on the
ribbon mask assembly for reference.

17.

Set the thickness control to match the form being loaded.

18.

Close the band gate and printer window.

19.

Press the TOP OF FORM switch several times to ensure that the
form is advancing correctly through the tractors.

20.

Press the START/STOP switch to place the printer in RUN
(RUN indicator will light).

mode

Occasionally, the paper will become jammed in the line printer and the
printer goes off-line.
If this happens, repeat Steps 2 through 13.
Then press the TOP OF FORMS switch. Restart the printer job and press
the ON/OFF-LINE switch.
Replenishing Forms
If you are merely replenishing the forms supply and not changing to
different form, proceed as follows:
1.

Lift the printer window.

Unlatch and fully open the band gate and ribbon mask.

CAUTION
wait until the Charaband stops
before proceeding to the next step.

rotating

Open all tractor pressure plates.

Insert the new form, overlapping the old one by at least one
page and aligning the two at the page perforations.
Close
all tractor pressure plates.

Close and latch the ribbon mask.

Close the band gate and printer window.

Press the START/STOP switch to place the printer in RUN
(RUN indicator is lit).

1-20

mode

PRINTERS
1.2.3

Controlling the vertical For.mat Unit

The LP07 line printer has a direct access VFU
(DAVFU)
that is the
software counterpart of a carriage control tape.
The direct access
VFU is loaded with a file. containing an 8-channel by 143-line bit
matrix.
The ON bits in this matrix represent the punched holes in the
corresponding carriage control paper tape.
NOTE
In most conventional line printers the vertical format
unit is a punched paper tape.
Instead of a punched
paper tape, the LP07 has a direct access vertical
format unit (DAVFU). A DAVFU is a programmable binary
matrix that replaces the punched paper tape.
The LP07 printer provides for the software control of the print
density
(six or eight lines per inch) as well as for operator control
by means of a switch.
Information on how to generate, store,
and load
contained in the files MAKVFU.DOC and MAKVFU.HLP.

DAVFU

matrices

TOPS-IO Only
On a TOPS-10 system, to generate a default matrix that corresponds to
Channels 1-8 of the standard line printer carriage tape for the LP10,
proceed as follows:
. R MAKVFU

Run the MAKVFU program .

*OUTPUT

If this is the only command, the default
matrix is generated· and is stored as
DSK:NORMAL.VFU on your disk area.

*EXIT

Return to the monitor.

To generate a custom matrix, load MAKVFU
MAKVFU commands as described below.

and

Command

give

the

appropriate

Function

CHANNEL n ALL

Set all lines in logical
channel n.
(n = 1,2, ... 8)

page

for

CHANNEL n BOTTOM

Set last line
channel n.
(n

page

for

CHANNEL n EVERY m

Set every m-th line in physical page for
channel n.
(n = 1,2, ... 8) (m
1,2, ... length)

CHANNEL n LINES m1 m2 ...

Set lines m1, m2,
in physical page
for
channel n.
(n = 1, 2, ... 8)
(m1 m2 ... = 1,2, ... length)

CHANNEL n TOP

in logical
1,2, ... 8)

Set line 1 in physical page for
(n = 1,2, ... 8)

EXIT

Exit from MAKVFU.

FORMS

Clear all forms break channels.

1-21

channel

PRINTERS
FORMS n

Define forms break for channel n.

HELP

Display the
terminal.

INFORMATION

Display a brief description of the VFU
file, including length, page size, forms
break,
and
LPI
(lines
per
inch)
settings.

INFORMATION n

Display a description
defined for channel n.

LENGTH x

Define the physical page size to be x.
(x = 1 - 143).
Length must be greater
than or equal to page size.

LPI Y

Define the print density in lines per
inch, where y = 0, 6, or 8.
0 indicates
density has been set manually.

OUTPUT dev:file.ext[p,pn]

Generate a binary VFU file with the
specified name.
If the argument is
omitted, the default is DSK:NORMAL.VFU
in the user's disk area.

PAGE z

Define the logical page size to be z
where z = 1 - 143.
Page size must be
less than or equal to length.

MAKVFU.HLP

file

the

lines

The automatic loading of an appropriate DAVFU file is discussed
LPTSPL in the TOPS-20 Operator's Guide.

1.2.4

the

under

Changing and Reversing the Ribbon

The following procedure describes how to change the ribbon on an
line printer.
(See Figure 1-13.)
and

set

the

LP07

Lift the operator panel access cover
circuit breaker to the OFF position.

POWER

Lift the printer window; unlatch and fully open the band gate
leaving the ribbon mask against the forms.
CAUTION
Wait until the Charaband stops
before proceeding to the next step.

rotating

Using plastic gloves, grasp the ribbon rolls and force them
to the right until the ribbon cores are free of the ribbon
motors.

Pull the ribbon completely free of the band
the ribbon unless you are reversing it.

Remove the new ribbon from its box and remove
wrapping and any protective cardboard collars.

1-22

gate.
the

Discard
plastic

PRINTERS

Hold the ribbon cores with the fully wound core above the
other so the ribbon will unwind from the underside of the
ribbon core when installed. Force the right end of the upper
ribbon core against the top floating ribbon holder, align the
left end with fixed ribbon holder,
and allow the spring
tension to lock the core into position.

Unwind the other ribbon core over the ribbon guide bars and
Charaband. position the lower ribbon core between the bottom
ribbon holders in the same manner.

Ensure that the slots in the ends of the
engaged by the ribbon holder guide pins.

cores

are

Ensure that the ribbon position sensor is not covered by
ribbon.

the

10.

Close the band gate and printer window.

11.

Set the POWER circuit breaker to the ON
the operator panel access cover.

12.

When the READY indicator comes on,
press the START/STOP
switch to place the printer in RUN mode.
(RUN indicator is
lit. )

ribbon

position

and

Some listings have more print on the left half of the forms.
To
prevent the ribbon from wearing unevenly, you can reverse the ribbon
as follows:
1.

Follow Steps 1-4 above to remove the ribbon.

Holding the two ribbon cores as you took them off the
printer,
rotate them so that the top and bottom cores are
reversed.

Put the ribbon back on
through 12.

the

1-23

printer

following

Steps

PRINTERS

TOP RIBBON
GUIDE BAR

TOP FLOATING
RIBBON HOLDER

TOP FIXED

RIBBON\ER

8402-4

CHARABAND

Figure 1-13:

1.3

BOTTOM RIBBON
GUIDE BAR

RIBBON POSITION
SENSOR

RIBBON MASK

LP07 Ribbon Installation

LP10 PRINTER

1.3.1

Control Panel

The operator control panel is located on top of the printer at the
left.
Controls for normal operation are visible, other controls are
covered by a metal plate which can be lifted from the front.
The
control panel is illustrated in Figure 1-14.
The panel contains
switches (two-position), white indicator lights (POWER indicator can
be green),
red error lights and two dial knobs.
From the bottom up,
these controls are as follows:
TOP OF FORM Switch - With the printer off-line,
depressing the
TOP OF FORM switch causes the paper and/or the carriage control
loop to position themselves at the top of a page ready for
printing.
TEST MODE Switch - With the printer off-line,
causes a 132
character
line to print continuously until the switch is
depressed again.
Used to test forms setup and also to check if
all 132 hammers are firing.
ON/OFF/LINE Switch - Places
off-line.

the

printer

on-line

POWER Indicator Light - When lit, the power switch is in
position.

takes

the

READY Indicator Light - When lit, there are no error conditions
such as paper faults, no ribbon change needed, the printer can be
placed on-line or the test mode switch depressed.

1-24

PRINTERS
TEST Indicator Light - The TEST MODE switch is depressed.
ON-LINE Indicator Light - When lit, the printer
the program.

can

respond

ERROR LIGHTS
Whenever an error condition occurs, such as running out of paper,
improper installation of format loop, or ribbon reversal needed, the
ON LINE and READY lights go out. At this time one of the red error
lights below may come on.
DRUM GATE Light - The drum gate is open and must be closed before
printing can commence.
PAPER FAULT Light - ~y of these conditions will cause this to be
lit:
The printer 1S out of paper, runaway paper motion has
occurred, incorrect format loop, ribbon-reversal needed.
PRINT INHIBIT
malfunction.

Light

When

lit

there

To turn these lights off, correct the problem
CLEAR Switch.

is
and

an
press

electrical
the

MASTER

OTHER CONTROLS AND SWITCHES
POWER Switch - Powers the printer ON and OFF.
DRUM SPEED Switch - The printer can operate at both high and low
speeds.
Make certain the POWER Switch is OFF and the drum has
ceased to rotate before changing the speed.

1-25

PRINTERS

\.,J
PAPfR
fAUlT

PRIN1
INIiIBi1

MASHR

CLEMI

ON LINE

, I t

TOP Of
10RM

frSi
MODE

OIllIOFF
lilliE

6390-3

6390-1

Figure 1-14:

LP10 Line Printer
1-26

PRINTERS
PENETRATION CONTROL Knob ~ Increasing the penetration causes the
printer hammers to fire with more force.
The penetration should
be increased when printing forms with multiple or carbon copies.
Check the quality of the bottom copy before proceeding with the
entire print job.
PHASING CONTROL Knob - This is used to equalize the top-to-bottom
density of the characters; the adjustment is necessary when you
have changed the penetration or drum speed.

1.3.2

Changing Paper and Forms

The following procedure describes forms installation,
alignment,
adjustment on an LP10 line printer.
(See Figure 1-15.)
1.

Press the ON/OFF-LINE switch to set the printer off-line
LINE indicator is not lit) .

Lift the printer window.

Using the drum gate latch, unlatch and fully
gate.

open

the

and
(ON

drum

CAUTION
wait for the character drum to stop
before you proceed.

rotating

Be sure that the proper vertical format tape has been mounted
on the vertical format unit.

Press and release the TOP-OF-FORM switch.

Set the COPIES CONTROL LEVER to match the form being used.

Be sure the upper and
aligned.

are

vertically

Rotate the FINE ADJUSTMENT thumbwheels completely
on both the upper and lower right tractors.

clockwise

Unlock the upper and lower tractor locks
tractors and move them to the extreme right.

the

lower

left

tractors

right

10.

Open all tractor pressure plates.

11.

Place the left edge of the form in the upper left tractor and
close the pressure plate.

12.

position the upper right tractor to allow precise alignment
of the tractor feed pins to the form-feed holes in the form.
Lock the upper right tractor and close the tractor pressure
plate over the form.
NOTE
Do not pull the paper taut.

13.

Loosen the PAPER TENSION locking knob and turn
TENSION control knob completely counterclockwise.

1-27

the

PAPER

PRINTERS
14.

Place the form in
pressure plate.

the

lower

left

tractor

and

the

15.

position the lower right tractor to allow precise alignment
of the tractor feed pins to the form-feed holes in the form.
Lock the lower right tractor, and close the tractor pressure
plate.
FINE ADJUSTMENT
THU
EEL

FINE ADJUSTMENT
THUMBWHEEL

Figu:re 1-15:

8023-2

LPI0 Paper Installation

16.

Turn the PAPER TENSION control knob clockwise until the
proper paper tension exists; this occurs when a slight crease
on the top edge of the form-feed holes in the form appears.
Tighten the PAPER TENSION locking knob.

17.

Rotate the FINE ADJUSTMENT thumbwheel on both the upper and
lower right tractors until proper horizontal paper tension
exists.
The tension is correct when there is a slight crease
on the right edge of the form-feed holes in the form.

18.

Mount the forms alignment scale (located in the paper storage
area, right side) across the hammer bank area using the dowel
pin.s located on special castings at both sides of the hammer
bank.

1-28

PRINTERS

19.

Using the HORIZONTAL PAPER POSITION thumbwheel, move the form
horizontally until the first print column on the form
corresponds to the first column on the forms alignment scale.

20.

Move the paper feed clutch lever (located to the right of the
vertical format unit)
to the ADJUST position. Using the
PAPER DRIVE ADJUSTMENT thumbwheel, adjust the form vertically
until the first print line of the form is aligned with the
FORMS ALIGNMENT SCALE print line.

21.

Remove the FORMS ALIGNMENT SCALE,
and replace
scabbard (paper storage area, right side).

22.

Move the paper feed clutch lever to the RUN position.

23.

Close and latch the drum gate.

24.

Close the printer window.

25.

Check the paper tension by pressing the TOP-OF-FORM switch
several times and ensuring that the paper does not pull loose
from the tractor feed pins.

26.

Press the ON/OFF LINE switch to set the printer
LINE indicator lit) .

on-line

the

(ON

Occasionally, the paper will become jammed in the line printer and the
printer will go off-line.
If this happens, repeat Steps 2, 3, and 7
through 17.
Then press the TOP OF FORM switch,
restart the printer
job and press the ON/OFF LINE s~itch.

1.3.3

Controlling the Vertical Format Unit

To make a standard carriage control tape for vertical format control
of II-inch paper with six lines of printing per inch,
do the
following:
1.

Obtain a manual- or machine-operated
12-channel carriage control tapes.

Obtain a carriage control tape with feed holes,
channels
numbered 1 through 12, and lines numbered 0 to at least 135.
In this case, the tape loop accommodates two forms.

Align the tape in the punch to begin punching in line O.

Using Table 1-1 as a guide, proceed line by line on the tape,
and punch a hole for each of the channels indicated on a
line.

1-29

punch

made

punch

PRINTERS
Table 1-1:

Standard LPI0 Line Printer Carriage Tape

Form. 1

Form. 2

Line

Channels Punched

00
01
02

66
67
68

1-2-3-4-5-6-7-8-9-10-11-12
5-8
3-5-8

03
04
05

69
70
71

4-5-8
3-5-8
5-8-9

06
07
08

72
73
74

3-4-5-8
5-8
3-5-8

09
10
11

75
76
77

4-5-8
3-5-6-8-9
5-8

12
13
14
15
16
17

78
79
80
81
82
83

3-4-5-8
5-8
3-5-8
4-5-8-9-10
3-5-8
5-8

18
19
20

84
85
86

3-4-5-8
5-8
3-5-6-7-8-9

21
22
23

87
88
89

4-5-8
3-5-8
5-8

24
25
26

90
91
92

3-4-5-8
5-8-9-11
3-5-8

27
28
29

93
94
95

4-5-8
3-5-8
5-8

30
31
32
33
34
35

96
97
98
99
100
101

2-3-4-5-6-8-9-10
5-8
3-5-8
4-5-8
3-5-8
5-8-9

36
37
38

102
103
104

3-4-5-8
5-8
3-5-8

39
40
41

105
106
107

4-5-8
3-5-6-7-8-9-12
5-8

42
43
44

108
109
110

3-4-5-8
5-8
3-5-8
1-30

PRINTERS

45
46
47

112
113

4-5-8-9-10
3-5-8
5-8

48
49
50

114
115
116

3-4-5-8
5-8
3-5-6-8-9-11

51
52
53
54
55
56

117
118
119
120
121
122

4-5-8
3-5-8
5-8
3-4-5-8
5-8-9
3-5-8

57
58
59

123
124
125

4-5-8
3-5-8
5-8

60
61
62

126
127
128

5
5
5

63
64
65

129
130
131

5
5
5

III

After you have punched all the lines through 131,
cut the
tape at line 135. Spread some rubber cement between lines
129 and 135. Place line 0 over line 132. Keeping the feed
holes aligned, press the ends of the tape together.

Repunch the holes covered by the overlapped tape.

Set the printer off-line, and open the printer cover.

Lift the tape loop reader handle so that
clears the sprocket teeth.

Place the tape over the tape loop reader capstan so that the
feed holes are over the sprocket teeth.
Be sure that channel
12 of the tape is toward your left as you are facing the
front of the line printer.

10.

Close the tape loop reader. Be sure the tape stays attached
to the drive sprocket while you clamp the drive sprocket shoe
in place.

11.

Press TOP-OF-FORM.
The tape should halt with the
star wheel just beyond the TOP-OF-FORM hole.

12.

Align forms vertically.

13.

Close the printer cover.

the

sprocket

shoe

channel

The standard LP10 carriage tape causes the vertical actions shown in
Table 1-2.
Channels 1 through 8 are used by system software, and
channels 9 through 12 are used by diagnostic programs.

1-31

PRINTERS
Table 1-2:

Standard LP10 Line Printer Vertical Action

Channel

Vertical Action

Top of form.

Space half a page (30 lines).

Double space with automatic top of form after 30
impressions.

Triple space with automatic top of form after 20
impressions.

Single space (Channel 5 is the only channel that
can be specified for the last six lines of the
page) .

Space one-sixth of a page (10 lines).

Space one-third of a page (20 lines).

Single space with automatic top of form after 60
impressions.

Space one-twelfth of a page (5 lines) .

Space one-fourth of a page (15 lines).

Space 25 lines.

Space 40 lines.

A programmer wanting a nonstandard carriage control tape must tell you
what channels need to be punched on each line. Be sure that you punch
a tape to accommodate the number of forms that are needed to make the
tape loop at least ten inches in circumference.

1.3.4

Changing and Reversing the Ribbon

The following procedure describes how to change the ribbon on an
line printer.
(See Figure 1-16.)
1.

Use the plastic gloves supplied with the ribbon.

Press the ON/OFF-LINE switch to set the printer off-line
LINE indicator not lit.)

Lift the printer window.

Move the drum gate latch left and pull forward to fully
the drum gate.
CAUTION
Wait for character
before you proceed.
1-32

drum

stop

rotating

LP10

(ON

open

PRINTERS
FIXED RIBBON HOLDER

FLOATING RIBBON HOLDER

Figure 1-16:

LP10 Ribbon Installation

Grasp the ribbon cores and force them to the left toward the
drum gate latch until the floating ribbon-holder springs are
completely compressed.

Remove the ribbon by pulling the right end of the ribbon
cores away from the drum gate.
Discard the ribbon unless you
are reversing it.
(See below.)

Remove the new ribbon from the box and hold the ribbon
together.
Remove any protective cardboard collars.

Place the fully wound ribbon core over
ribbon holder.

Push the core to the left and place the right end over the
bottom
fixed ribbon holder.
Be sure that the holder
guide-pin slips into the slot on the core end.

the

bottom

floating

10.

Unwind enough of the fully wound ribbon
ribbon up and over the character drum.

11.

Slip the ribbon between the ribbon guide clips
sensor.

12.

Place the ribbon core against the top floating ribbon holder.

1-33

core

cores

and

bring

the

box

PRINTERS
13.

Push the core to the left and place the right core end over
the top fixed ribbon holder.
Be sure that the holder
guide-pin slips into the slot on the core end.

14.

Close and latch the drum gate.

15.

Close the printer window.

16.

Press the ON/OFF-LINE switch to set the printer
LINE indicator is lit).

on-line

(ON

Most listings have more print on the left half of the paper.
Therefore,
to prevent the ribbon from wearing unevenly, you should
reverse the ribbon.
Do the following:

1.4

Follow Steps 1 through 6 above to remove the ribbon.

Holding the two ribbon cores as you took them off the
printer,
rotate them clockwise until the top core is at the
bottom.
Now the top and bottom cores are reversed.

Put the ribbon back on
through 16 above.

the

printer

following

Steps

CLEANING A LINE PRINTER

In addition to the general cleaning procedures for impact printers
given at the beginning of the chapter, you should pay particular
attention to the printing elements.
You should inspect the Charaband assembly on the LP07 daily for
excessive ink and paper residue collection.
Use isopropyl alcohol to
clean away ink accumulation from the Charaband slugs.
Whenever the
Charaband is removed or reversed, the roadbed and top ribbon guide
should be vacuumed.
You should clean the character drum on the LP10, LP05, LP14, LP26 and
LP27 every 100 hours or sooner, using a soft suede brush and a vacuum
cleaner.
Every 500 hours or sooner, clean the character drum with
isopropyl alcohol.

1.5

CONTROLLING THE TOPS-20 CHARACTER TRANSLATION RAM

There are two files on the TOPS-20 system to control the character
translation RAM (random-access memory).
The file SYS:LP64.RAM is used
for 64-character-set printers and the file SYS:LP96.RAM is used for
96-character-set printers.
This RAM controls the way characters are
treated by the line-printer controller
(LP20).
After TOPS-20 is
started,
this RAM is loaded according to a PRINTER command in
<SYSTEM>n-CONFIG.CMD, where n is the TOPS-20 release number.
(See the
TOPS-20 KL Model B Installation Guide for more information on
n-CONFIG.CMD.)
If a RAM file gets destroyed, you can re-create it with MAKRAM.
The
instructions for running MAKRAM are in the files MAKRAM.HLP and
MKR3-20.DOC.

1-34

PRINTERS
1.6

LN01 LASER PRINTER

The LNOI laser printer is a microcomputer-based laser output
which forms electrostatic images for xerographic reproduction.

device

The LNOI produces xerographic originals on single 8 1/2-by-ll inch
sheets,
a page at a time, at a maximum rate of 12 pages per minute
(approximately 600 lines per minute).
Pages can be printed with
either a vertical (80 characters wide) or a horizontal (132 characters
wide) orientation. Note that the LNOI prints a page at a time, not a
line at a time. No output occurs until a page terminator character (a
form feed, for instance) is received.
The LNOI uses a
orientation
and
orientation.

142-character line buffer for the
horizontal
a ISO-character line buffer for the vertical

Overstriking characters on the LNOI is possible within the limits of
the line buffer size
(in other words, everything to be overprinted
must fit in the buffer at once). However, bold characters cannot be
made this way since the image is not built up by impact.
NOTE
In the case of the LNOI laser printer,
it
is
especially important to have on hand the following
three manuals for reference:
o

LNOI Programmer Reference Manual

LNOI Electronic Printer Installation Guide

LNOI Electronic Printer Operator Guide

Certain operation and maintenance procedures can only
be performed by licensed Field Service personnel.
Commands for loading fonts in the LNOI are described
Operator's Guide.

1.6.1

the

TOPS-I0

Control Panel

The control panel for the LNOI laser printer is located on the top of
the printer as shown in Figure 1-17. There are five displays on the
panel (as numbered in the illustration), indicating the following:
On-Line -

Ready to make prints.

Off-Line - stops printing.

Normal mode.

Used for testing and service.

Test -

Makes a test print (off-line only).
use.

Display -

Displays status code.

DEC Field Service

Keyboard - Keyboard is for service actions.
A small instructions booklet is attached to the LNOI printer.
NOTE
Maintenance of the LNOI laser printer should
provided only by Digital Field Service personnel.
1-35

PRINTERS

mrnrnmrn

mmmmrnm

Figure 1-17:

LNOI Laser Printer

1-36

ONLINEOB
OFFLINEOB

PRINTERS
1.6.2

Loading Paper

This section shows you how to remove
paper.

the

paper

cassettes

and

load

To remove the paper cassettes:
selector

Turn
the
cassette
(counterclockwise) .

handle

the

Pull the paper cassettes all the way out of the LNOI.

left

To load paper:
1.

Load paper from the package with the label right side
This step ensures the paper curl matches the drum curl.

up.

NOTE
For the best results,
use only
DIGITAL
LNOIX-AB paper or the equivalent.
Call your
local DIGITAL representative for information
on equivalent papers.
2.

Load paper into the paper cassettes (Figure 1-18).
Do not
load above the maximum fill line. Make sure to stack all
paper under the tray positioning bars.
If the paper is
predrilled,
make certain the holes are to the right.
Load
letterhead paper with the letterhead face down and to the
rear.

FRONT

Figure 1-18:

LNOI Paper Cassette

Insert the cassettes into the LNOI and
all the way in.

Turn the selector handle upright (clockwise).
If a print job
was halted by the "out of paper" status code (C4), the LNOI
automatically starts printing again.

1-37

slide

the

cassettes

PRINTERS
1.6.3

Controlling the vertical Format Unit

This feature is controlled by the software on the LN01.
See the
Programmer's Reference Manual for information about the VFU.

1.6.4

LN01

Checking and Adding Dry Imager

Dry imager is the black powder that forms the image on LN01 prints.
To keep the image quality high, you should perform the following steps
as needed:
o

Check the dry imager and paper cassettes (DIGITAL recommends
checking the dry imager and cassettes at the start of your
shift) .

Add dry imager.

Stir dry imager.

Load paper.

Check the print quality.

Unload the output tray.

Never store dry imager in an area where the
degrees Farenheit (26 degrees Centigrade) .

temperature

exceeds

110

Always keep the dry imager supply at a level above the agitator
blades,
but below the top of the hopper.
Otherwise, prints become
lighter when the dry imager runs low.
Sometimes the dry lmager may
require stirring with the stirring paddle.
Check the dry imager as
follows:
1.

Open the access door (Figure 1-19) .

MA0025·83

Figure 1-19:

LN01 Access Door

1-38

PRINTERS
2.

Lift the cover of the dry imager hopper.

If you can see the agitator blades
(Figure 1-20),
LN01X-AA dry imager or the equivalent, as follows:
the

add

Carefully read and follow the instructions on
of the dry imager bottle.

label

Shake the dry imager well before adding.

Place the funnel top on the dry imager bottle.

Carefully fill the dry imager hopper above the level of
the agitator blades, but leave at least 1/2 inch below
the top of the hopper (Figure 1-20). Stir.

MA-0024A-83

Figure 1-20:
4.

Adding Dry Imager to the Hopper

Avoid spilling dry imager outside the hopper
do, wipe it up with a dry cloth.

area.

CAUTION
To prevent damage to the LN01,
use
LN01X-AA dry imager or its equivalent.
your
local
DIGITAL
representative
information on LN01X-AA equivalents.
5.

only
Call
for

Close the dry imager hopper cover.
NOTE
If you get any dry imager on your hands or
clothes,
you can brush, vacuum, or wash it
off.
Use cold water only.

1-39

you

PRINTERS
NOTE
Do not attempt to clean the LNOI Laser
yourself.
Call
your
Digital
Field
Representative for maintenance on the LNOI.

1.7

Printer
Service

LN03 LASER PRINTER

The LN03 laser printer is a nonimpact page printer that uses laser
recording technology to produce high-quality printed output.
When
performing continuous text printing, the LN03 prints eight pages per
minute.

1.7.1

Indicator Panel

The indicator panel is located on the front of the LN03 in the upper
right-hand corner.
(See Figure 1-21.)
The panel can display the
following symbols, shown in Figure 1-21 inset:
1.

CHARACTER DISPLAY - Displays informational or error code.
NOTE
A flashing "6" on the CHARACTER DISPLAY is
not an error condition.
It indicates the
printer is busy loading fonts, which can take
several minutes.
A steady "6" on the
CHARACTER
DISPLAY
indicates there is still data in the buffer.
Press ON/OFF LINE twice to eject the last
page of print.

PAPER JAM - Flashes with "E" on CHARACTER DISPLAY when paper
exit area needs clearing.
Flashes with "F" on CHARACTER
DISPLAY when paper feed area needs clearing.

CONTROLLER ERROR - Flashes to indicate an error caused by the
controller.

ON/OFF LINE Indicator Button - Press to set printer
or OFF-LINE.
Lit when the printer is ON-LINE.

READY Indicator - Flashes when the printer is warming up.
Lit steadily when the printer is ready to print.
The READY
indicator remains OFF when the printer is printing.

POWER Indicator - Lit when printer power is ON.

CALL FIELD SERVICE Flashes
printer needs repair.

ADD PAPER - Flashes when paper tray
Paper, Section 1.7.2).

1-40

with

ON-LINE

CHARACTER

DISPLAY

(see

empty

when

IJoading

PRINTERS

MA-130J..84D

Figure 1-21:

LN03 Indicator Panel

REPLACE TONER CARTRIDGE & CLEANING PAD - Flashes when toner
cartridge and cleaning pad need to be replaced (see Replacing
the Toner and Cleaning Pad, Section 1.7.3).

10.

REPLACE TONER COLLECTION BOTTLE
Flashes
when
toner
collection bottle is full or not present (see Replacing the
Toner Collection Bottle, Section 1.7.4) .

11.

MAINTENANCE
Lit when printer needs maintenance.
See
Installing and Using the LN03A or the LN03 User Maintenance
Kit (PN LN03X-AD) for maintenance procedures.

An operator reference booklet is attached to the top of the printer.

1-41

PRINTERS
1.7.2

Loading Paper

To load paper, lift the paper tray cover and place paper in the paper
tray
(Figure 1-22).
(The side that is up in the paper tray is the
side that will be printed.) Then close the paper tray cover.
To avoid paper jams, do not add paper above the paper tray limit line,
shown in Figure 1-22 inset.

MA-1300-84E

Figure 1-22:

LN03 Paper Tray

NOTE
Use only high quality paper such as DIGITAL's LN03X-AF
and/or LN03X-AH to ensure smooth operation of your
LN03.

1-42

PRINTERS
1.7.3

Replacing the Toner Cartridge and Cleaning Pad

The LN03 indicates when it needs paper, toner,
flashing the appropriate indicator panel symbol.

maintenance

Instructions for replacing the toner cartridge and cleaning pad are
included in the LN03 Toner Kit
(PN LN03X-AC)
and in the manual
Installing and Using the LN03A. Use the following procedure if you do
not have those instructions.
CAUTION
Too much toner can damage the printer. Add one toner
cartridge and cleaning pad to the printer only when
the REPLACE TONER CARTRIDGE & CLEANING PAD indicator
lights.
1.

Power off the printer.

Check that the printer's paper tray is installed.

Pull the development drawer out firmly, letting it slide in
the guide tracks on the paper tray cover until it stops (see
Figure 1-23).
CAUTION
Do not open the development drawer without
the paper tray installed.
The paper tray
supports the development drawer.

Open the toner cartridge cover (see Figure 1-24).

Remove the old toner cartridge by sliding it to the left
then up (see Figure 1-24 inset).

and

Shake the
seconds.

new

toner

cartridge

1-43

vigorously

for

about

PRINTERS

GUIDE TRACKS
MA-1301-84A

F"l..gure 1-23-_

LN03 Development Drawer

1-44

PRINTERS

MA-1301-848

Figure 1-24:

LN03 Toner Cartridge

Install the toner cartridge, foil side down, so the release
tab is on the right side and the cartridge guides are in the
hopper notches.

Slide the toner cartridge to the right until the guides
against the hopper notches (see Figure 1-25).

1-45

stop

PRINTERS

HOPPE R NOTCH
MA-1301-84C

Figure 1-25:

9.
10.

LN03 Toner Cartridge Hopper Notches

Move the release tab from the top of the toner cartridge; let
the tab hang from the right side of the cartridge.
Close the toner cartridge cover.

1-46

PRINTERS

MA-1301-84E

Figure 1-26:

LN03 Toner Cartridge Release Tab

11.

Holding the toner cartridge cover down securely,
pull the
release tab out firmly until the second release tab appears
(see Figure 1-26) .

12.

Pull the second tab out
remove the tabs.

firmly

release

the

toner

and

CAUTION
Do not remove the toner cartridge after
adding the toner.
The cartridge acts as a
cover to keep stray toner from damaging the
printer.
13.

Close the development drawer.

You are now finished replacing the toner cartridge.
21 describe how to replace the cleaning pad.

Steps 14

WARNING
To prevent personal injury,
the
printer
should
remain off for 40 minutes until
completely cool before you open the fusing
unit cover to replace the cleaning pad.

1-47

through

PRINTERS

14.

Open the paper exit cover by lifting its release
Figure 1-27).

Figure 1-27:

LN03 Paper Exit Cover Release Lever

1-48

lever

(see

PRINTERS

15.

Push the lock lever firmly toward the rear of the printer
until the fusing unit rests on the paper exit cover (see
Figure 1-28).

LOCK LEVER

MA-1301-84K

Figure 1-28:

LN03 Paper Exit Cover Lock Lever

1-49

PRINTERS

16.

Open the fusing unit cover by pushing the
back (see Figure 1-29).

two

locking

MA-1301-84L

Figure 1-29:

LN03 Fusing Unit Cover Locking Tabs

1-50

tabs

PRINTERS
17.

Remove the old cleaning pad (see Figure 1-30).

MA-1301-84M

Figure 1-30:

LN03 Cleaning Pad

18.

Insert a new cleaning pad.

19.

Close the fusing unit cover.

20.

Pull the fusing unit
operating position.

21.

Close the paper exit cover.

22.

Power on the printer.

23.

Print ten summary sheets by pressing the test button
rear of the printer for each sheet.

forward

until

locks

into

its

the

NOTE
The summary sheets are printed to properly seat the
cleaning pad to the heat roller. After ten sheets the
print quality should be clean and legible.

1-51

PRINTERS
1.7.4

Replacing the Toner Collection Bottle

Replace the toner collection bottle when the REPLACE TONER
BOTTLE indicator lights (see Figure 1-31).

COLLECTION

Instructions for replacing the toner collection bottle are included in
the LN03 Toner Kit
(PN LN03X-AC) and in the manual Installi~ and
using the LN03A. Use the following procedure if you do not have those
instructions.
1.

Open the left side cover (see Figure 1-31).

Figure 1-31:
2.

LN03 Toner Collection Bottle

Remove the old,
full toner collection bottle by gently
pushing it down and then lifting it out at a slight angle
(see Figure 1-31 inset).

1-52

PRINTERS

Remove the cap from the new toner collection bottle and place
the new cap on the bottle of used toner.
Discard the old
bottle.
CAUTION
Do not reuse toner from the toner collection
bottle.
Used
toner
will
damage
the
development unit.

Insert a new toner collection bottle.

Close the left side cover.

After adding toner, clean the external surfaces
cloth. Vacuum the feed, exit, and fusing areas.

1-53

with

soft,

damp

CHAPTER 2
CARD READERS

The operator control panels for the high-speed reader CR10-E and the
low-speed
reader
CR10-F
are
shown in Figures 2-1 and 2-2,
respectively.

2.1

LIGHTS AND SWITCHES

At the back of each card reader are a power switch and two toggle
switches.
For normal operation the toggle switches should be set in
the REMOTE and AUTO positions.
Setting the mode switch to MANUAL
takes the reader off-line.
The following alarm indicator lights are used as follows:
HOPPER CHECK - When lit, the hopper is empty or the stacker is
full.
Add cards to the hopper and/or remove them from the
stacker. Press RESET to proceed.
STACK CHECK - The last card is not
stacker. Check for a mutilated card.

seated

properly

the

PICK CHECK - The reader attempted to read a card but the card
failed to reach the read station. Check the hopper for mutilated
or worn edges, rubber bands or staples, warpage of the cards.
If
the cards are all right, check the picker face for ink build-up
and clean with alcohol if necessary. Press RESET to proceed.
READ CHECK - Card has torn edges or is mispunched.
indicate a failure in the read electronics.

This can also

When one of the above lights comes on, the RESET light goes out.
After the trouble has been corrected, press RESET to allow the program
to continue.

2-1

CARD READERS

r----' r----' r-----' .-------,

POWER

I ;

, READ II I PICK ' I STACK I 'HOPPER 1
,CHECK, : CHECK : : CHECKl : CHECKl
,

L _____ .J

I I
, ,
,
L _____ J L _____ J L _____ ..J

Model M200

STOP

CR10F

MR-S-064-79

6027-5

Figure 2-1:

CR10-E Card Reader

2-2

CARD READERS

READ
CHECK

PICK
CHECK

STACK
CHECK

HOPPER
CHECK

STOP

RESET

Model M1200

6027-6

Figure 2-2:

CRIO-F Card Reader
2-3

END OF
FILE

CR10E

CARD READERS
2.2

LOADING AND UNLOADING CARDS

Use the following procedure to load
cards to be read:

the

input

hopper

with

punched

Be sure the reader is powered ON (POWER indicator lit),
and
check that the MODE switch on the rear control panel of the
reader is set to REMOTE.

Pull the hopper follower back with one hand and begin loading
card decks into the hopper.
Be sure to place the first card
to be read at the front with the 9 edge down, column 1 to the
left.

Continue placing cards into the
loosely filled.

input

hopper

until

WARNING
Do not pack the input hopper so full that the
air from the blower cannot riffle the cards
properly.
If the cards are packed
too
tightly,
the
vacuum picker cannot work
properly.
4.

Press RESET to allow cards to be read.

You may continue loading cards while the reader is operating,
provided you maintain tension in the front portion of the
deck as you add cards to the rear.
Do not add more cards
until the hopper is at least half empty.
WARNING
When you are trying to maintain pressure on
the card deck,
use just enough pressure to
maintain the riffle
action
to
prevent
damaging cards or jamming the reader.

2.3

Usually, all cards are moved through the reader into the
stacker. However, if you need to remove cards from the input
hopper, simply pull back the follower and remove the card
deck.

To unload cards from the output stacker,
pull the stacker
follower back with one hand and remove the card deck from the
stacker. Be careful to maintain the order of the deck.
The
stacker can be unloaded while cards are being read.

CLEANING THE CARD READER

The important cleaning area for a card reader is the card path,
which
accumulates card dust.
If this builds up, it causes data errors, card
motion errors, and possibly even card jams.
The card path should be
cleaned at least weekly. With the power OFF, the path from the hopper
to the stacker should first be blown out and then vacuumed thoroughly.

2-4

CHAPTER 3
DECTAPES (TOPS-10 ONLY)

The following procedures describe the actions necessary to mount and
dismount a DECtape on the TU56 transport on a DECsystem-10.
To assign
a drive to your job, enter:
.ASSIGN DTAn

3.1

Where n = 0-7, the number on the drive selector
indicator of some unused drive.
If the number on
the drive indicator is 8, enter DTAO.

MOUNTING AND DISMOUNTING DECtapes

See Figure 3-1 for a view of the TU56 transport.
To mount DECtapes:
1.

Place the REMOTE/LOCAL switch to OFF (middle position).
This
switch is located immediately to the right of the drive
selector indicator.

Mount the DECtape onto the left-hand hub so
upward at the left perimeter of the reel.

Thread the tape to the right, over the top of the tape guides
and tape head, and clockwise onto the take-up reel.

Wind several turns of tape clockwise onto the take-up reel.

Press the REMOTE/LOCAL switch into the LOCAL (bottom-pressed)
position.

Advance the tape about ten turns onto the take-up reel
pressing the top end of the rightmost rocker switch.

Press the REMOTE/LOCAL switch into the
position.

3-1

the

REMOTE

tape

feeds

(top-pressed)

DECTAPES (TOPS-10 ONLY)

7801-6

Figure 3-1:

TU56 DECtape Transport

To write on the tape, set the WRITE ENABLE/WRITE LOCK
to the WRITE ENABLE (top pressed) position.

switch

To dismount DECtapes:
If the software has rewound and unloaded the tape, skip Steps 1 and 2.

3.2

Set the REMOTE/LOCAL switch to the LOCAL position.

Wind the tape completely onto the left reel by pressing the
rewind switch
(top end of the leftmost rocker switch) and
holding it pressed until all the tape has wound onto the left
reel.

Place the REMOTE/LOCAL switch to OFF
remove the tape.

(middle)

position

and

CLEANING DECtape DRIVES

DECtapes do not have a complicated tape path; however, the brown oxide
powder that flakes off when a tape is in motion will accumulate on the
tape guides and tape head.
Once each shift, or at least once daily,
you should clean these areas with a cotton-tipped applicator and 91%
isopropyl alcohol.

3-2

CHAPTER 4
MAGNETIC TAPES

The TOPS-10 and TOPS-20 series hardware systems support a variety of
magnetic tape drives.
They cover both 7-track and 9-track operation,
tape speeds of 45 to 200 inches per second (1143mm/s to 5080mm/s), and
recording densities of 200 to 6250 bits per inch (8 rows/mm to 246
rows/rom). Various size reels can be accommodated and some drives will
accept industry-standard cartridges.
The system software identifies the drives by physical device names in
the form MTxn.
x is an alphabetic character representing the
controller; n is a drive unit number for that controller. MTAO, MTB3,
and MTC2 are all examples of valid names.
A user can access a
particular physical tape drive for input or output by indicating the
physical device name.
In TOPS-20, the <SYSTEM>n-CONFIG.CMD file (see the TOPS-20 KL Model B
Installation Guide) defines these device names by matching-a magnetic
tape device name to the serial number of a drive.

4.1

MAGNETIC TAPE CONTROLS AND INDICATORS

The following sections describe each type of magtape drive:

4.1.1

Model

Section

TU16

4.1.1

TU40

4.1.2

TU45

4.1.3

TU70/71/72

4.1.4

TU77

4.1.5

TU78/79

4.1.6

TU16 (TOPS-10 Only)

Table 4-1 explains the switches on a TU16 drive,
and Table 4-2
describes the indicator lights.
(See Figure 4-1.) Apply power to the
drive by placing LOAD/BR REL switch to the center position.

4-1

MAGNETIC TAPES
Table 4-1:

TU16 Switches

Switch

Function

LOAD/BR REL
LOAD position

Enables vacuum motor, which
into the buffer columns.

draws

tape

center position

Disables vacuum motor; brakes
on.

are

full

BR REL position

Releases brakes.

ON-LINE/OFF-LINE
ON-LINE position

Selects remote operation.

OFF-LINE position

Selects local operation.

FWD/REW/REV
FWD position

Selects, but does not initiate forward
tape motion when transport is off-line.

REW position

Selects, but does not initiate
rewind when transport is off-line.

REV position

Selects, but does not initiate reverse
tape motion when transport is off-line.

tape

START/STOP
START position

Initiates tape
motion
FWD/REW/REV switch when
off-line.

STOP position

Clears
any
motion
transport is off-line.

UNIT SELECT
(plug activated)

selected
transport

commands

by
is
when

Selects the tape
transport unit by
number (0-15); this number is used ~n
the
program
to
address
the tape
transport (slave address) .

4-2

MAGNETIC TAPES

Table 4-2:

TU16 Indicators

Switch

Function

PWR

Indicates power has been applied to
transport.

the

LOAD

Indicates the vacuum is on and the
is loaded into the buffer columns.

tape

RDY

Indicates that the tape transport is
ready
(vacuum on and settle-down delay
complete); no tape motion.

LD PT

Indicates that the tape is at load point
(beginning of tape - BOT) .

END PT

Indicates that the tape is at end
(end of tape - EOT) .

FILE PROT

Indicates that write operations
are
inhibited because the write enable ring
is not mounted on the file reel.

OFF-LINE

Indicates local operation by the control
box.

SEL

Indicates the tape transport is selected
by the controller (program).

WRT

Indicates that a
been initiated.

write

operation

has

FWD

Indicates that
been issued.

forward

command

has

REV

Indicates that
been issued.

reverse

command

has

REW

Indicates that a rewind command has been
issued.

4-3

point

MAGNETIC TAPES
UPPER TAPE GUIDE

HEAD COVER

SUPPLY REEL

REEL HOLDDOWN KNOB

Figure 4-1:

TU16 Magnetic Tape Drive

4.1.2

(TOPS-10 Only)

TU40

At the left on the control panel at the top of the TU40 transport is a
rotary switch for selecting the transport number; the selected number
appears in the window above the switch.
(See Figure 4-2.)
The lights above the switches indicate the state
whether produced by the switches or the program.

the

transport,

READY - The READY light indicates the transport is on-line.
SELECT - SELECT lights whenever the transport is selected by
control.

the

FILE PROTECT - FILE PROTECT indicates the write
absent from the supply reel.

4-4

enable

ring

MAGNETIC TAPES
The lower part Qf the panel contains a row of pushbuttons,
all of
which are momentary-contact except the one at the right end, which
controls power to the transport.
START - Pressing START puts the uni-t on-line,
provided it
ready for use by the program (the tape is properly closed) .

RESET - Pressing RESET, stop~ the tape and takes the unit
off-line,
enabling the rema1ning switches for local control.
Note however that if the tape is rewinding, you must press the
RESET button twice to stop the tape.
The first time you press
RESET will change the rewind operation to normal reverse speed.
LOAD REWIND - Pressing LOAD REWIND raises the transport window
and loads tape from supply reel to takeup reel, unless the tape
is already loaded,
in which case it rewinds the tape to
loadpoint.
Detection of a failure of any sort during loading
operations lights LOAD CHECK and the unit shuts down.
UNLOAD REWIND - Pressing UNLOAD REWIND rewinds the tape to
loadpoint,
and then unloads it entirely onto the supply reel and
lowers the transport window. A tape positioned at loadpoint or
endpoint is indicated by the BOT (beginning of tape) and EOT (end
of tape) lights.

4-5

MAGNETIC TAPES

5928-1

Figure 4-2:

TU40 Series Magnetic Tape Drive

4-6

MAGNETIC TAPES
4.1.3

TU45

The TU45 control panel is located at the top left
shown in Figure 4-3.

the

drive,

The POWER switch is part of the control panel.
The drives must be
powered ON before the system is started, otherwise they will not be
recognized by the software as available for use.
Power may also be
removed from a drive by opening the large lower door and setting the
small toggle switch to the off position. Normally, power should only
be removed by means of the switch on the control panel.
The control panel also includes a UNIT SELECT DIAL,
which normally
allows the device name,
such as MTAO or MTAl to be selected.
This
capability, however, is not implemented on the TU45 at present.
Each
drive retains its physical device name irrespective of the setting of
the dial.
To avoid confusion, DO NOT CHANGE the setting of the dial.
The FILE PROTECT light (FPT), when ON, indicates that the loaded
has no write ring, so that writing on the tape is not allowed.

tape

Pressing

and

The LOAD control is a momentary switch/indicator.
releasing the control initiates a load sequence.

The ON-LINE control is a momentary switch/indicator that is enabled
after an initial load or rewind sequence has been completed. Pressing
and releasing the switch changes the transport to an ON-LINE mode.
Pressing the ON-LINE control a second time sets the drive OFF-LINE.
The REWIND control is a momentary switch/indicator that is enabled
only in the off-line mode.
Pressing and releasing the control causes
tape to rewind.

4-7

UNIT SELECT
(optional)

MAGNETIC TAPES

POWER---...
LOAD/RESET
ON LlNE---"

SUPPLY REEL

REWIND-----.·
FILE PROTECT
HUB
---ACTIVATOR

1600 CPI - - - - ...

GUIDE WHEEL
(not visible)

TAKE-UP REEL

HEAD-----

GUIDE WHEEL

CAPSTAN---

9452-5

Figure 4-3:

4.1.4

TU45 Magnetic Tape Drive

TU70

The control panels for TU70,
TU71,
and TU72 drives are identical
except for the END OF TAPE and TAPE INDICATE switch.
(See Figure
4-4.) Power is supplied from the tape controller, which sequences the
power to groups of four drives.
The tape drives can be controlled locally by the control panel
pushbuttons and indicators.
Table 4-3 describes the controls and
indicators.

4-8

MAGNETIC TAPES

Table 4-3:

TU70 Series Controls and Indicators

Switch

Function

LOAD/REWIND

Initiates a load sequence; or, if the
is loaded, rewinds the tape.

START

Puts the drive on-line after it is loaded.

UNLOAD/REWIND

Rewinds and unloads
drive is off-line.

RESET

Takes the drive off-line.

HUB/WINDOW UP

Lifts the hub window;
off-line.

SELECT

Indicates the drive is
specified controller.

READY

Indicates the drive is on-line.

WRITE/DISABLED

Indicates the loaded tape has no write ring
when lit; writing on the tape is not
allowed.

TAPE INDICATE

Indicates the end of the tape (EOT).

MACHINE CHECK

Indicates
exists.

4-9

some

type

the

tape

after

the

drive

must

connected

the

tape

hardware

error

MAGNETIC TAPES

Figure 4-4:

TU70 Series Magnetic Tape Drive

4-10

MAGNETIC TAPES

4.1.5

TU77

The TU?? is shown in Figure 4-5.
Power is applied to the TU?? when
the system CPU is turned on.
Table 4-4 explains TU?? controls, and
Table 4-5 describes TU?? indicators.
Table 4-4:

TU77 Controls

Control

Function

Slave Select Switch
(unlabeled)

Selects the address (slave number a to
3) of the tape transport.

LOAD/REW

Pressing and releasing the LOAD/REW
button
will
initiate one of the
following sequences:
o

with no tape in path,
sequence is initiated.

with tape
in
path
but
not
tensioned,
a
mid-reel
load
sequence will be initiated.
In a
mid-reel load sequence the tape
will load and run in the reverse
direction to BOT.

with tape in path and tensioned,
and the transport off-line, the
If the tape
tape rewinds to BOT.
~s
already at BOT or if the
transport is on-line,
no action
occurs.

load

ON LINE

Pressing and releasing the ON-LINE
button will change the transport from
off-line to on-line.
Pressing and
releasing the button again will change
the
transport
from
on-line
to
off-line.

UNLOAD

If the TU?7 is off-line, pressing and
releasing the UNLOAD button causes the
tape to rewind and unload.
If the
tape
is already at BOT,
it will
unload.
If the TU?? is on-line,
the
UNLOAD button has no effect.

RESET

Pressing and releasing
the
RESET
button terminates all functions and
clears a load fault.

4-11

MAGNETIC TAPES

Table 4-5:

TU77 Indicators

Indicator

Function

POWER

Indicates presence of
power.

BOT

Indicates the beginning of the tape (BOT).

ON LINE

Indicates the TU77 is on-line.
The transport
will revert to the off-line mode if any of
the following occur.

and

secondary

ON LINE button is pressed.

An external
received.

Vacuum column interlock is broken.

AC power is lost.

RESET button is pressed.

rewind

unload

command

FILE PROTECT

Indicates that a reel
write-enable ring has
transport.

LOAD FAULT

Lamp flashes when a load fault has occurred;
such as when the autoload sequence has failed
to load a tape from a 267 mm (10-1/2 in) reel
after two trys.

800

Indicates the tape t+ansport is set
or write at 800 BPI (NRZI mode) .

read

1600

Indicates the tape transport is set
or write at 1600 BPI (PE mode) .

read

4-12

of tape without a
been loaded onto the

MAGNETIC TAPES
AUTO

BACKWRAP

~DEFEAT

MAN

bot

on lineO

file protect

load fault

0"-'0
12DDD D
PORT
O-A
B
AB
3 - TEST

LOAD REW

ON LINE

UNLOAD

RESET

o DDDD
I

""--,0

PORT
O-A
1-B
AB
3 - TEST

on line

LOAD REW

ON LINE

bot

file protect

UNLOAD

6250 0
16000

TU78

1
"\

load fault

RESET

8000
1600 0

TU77

9663-R2-2

Figure 4-5:

TU77 Magnetic Tape Drive

4-13

MAGNETIC TAPES
4.1.6

TU78/79

Power is applied to the TU78/79 when the CPU is turned on.
Table 4-6
explains TU78/79 controls, and Table 4-7 describes TU78/79 indicators.
Table 4-6:

TU78/79 Controls

Control

Function

Selects the Massbus I/O port(s) allowed
to
send
commands
to
this
tape
transport.

Port Select Switch

Switch
position

Table 4-7:

Transport
connected
Massbus port A

Transport
connected
Massbus port B

Transport connected to
Massbus ports A and B

both

Transport disconnected from
both
Massbus
ports
and
placed in maintenance mode
(available
to
TM78/79
formatter maintenance panel)

TU78/79 Indicators

Control

LOAD/REW

Function

Pressing and releasing the LOAD/REW button
will initiate one of the following sequences:
o

With no tape in path, a load sequence
initiated.

With tape in path but not tensioned,
a
mid-reel load sequence will be initiated.
In a mid-reel load sequence the tape will
load and run in the reverse direction to
BOT.

with tape in path and tensioned, and the
transport off-line,
the tape rewinds to
BOT.
If the tape is already at BOT or if
the
transport is on-line,
no action
occurs.

4-14

MAGNETIC TAPES
ON LINE

Pressing and releasing the ON-LINE button
will change the transport from off-line to
on-line. Pressing and releasing the button
again will change the transport from on-line
to off-line.

UNLOAD

If the TU78/79 is off-line, pressing and
releasing the UNLOAD button causes the tape
to rewind and unload.
If the tape is already
at BOT,
it will unload.
If the TU78/79 is
on-line, the UNLOAD button has no effect.

RESET

Pressing and releasing the RESET
button
terminates all functions and clears a load
fault.

BACKWRAP
DEFEAT

AUTO (automatic) position: Allows a backwrap
and retry for 10-1/2 inch reel,
with or
without a cartridge.
MAN (manual) position:
Inhibits a backwrap
and retry for 10-1/2 inch reel without a
cartridge.

POWER

Indicates presence of DC power and
AC power.

secondary

BOT

Indicates tape is at BOT.

ON LINE

Indicates the TU78/79 is
on-line.
The
transport will revert to the off-line mode if
any of the following occur:
o

ON LINE button is pressed.

Vacuum column interlock is broken.

AC power is lost.

RESET button is pressed.

external
received.

rewind

unload

command

FILE PROTECT

Indicates that a reel
write-enable ring has
transport.

LOAD FAULT

Lamp flashes when a load fault has occurred;
such as when the autoload sequence has failed
to load a tape from a 267 mm
(10-1/2 inch)
reel after two trys.

1600

Tape transport set to read or write
bits/inch density (PE mode) .

1600

6250

Tape transport set to read or write
bits/inch density (GCR mode) .

6250

4-15

of tape without a
been loaded onto the

MAGNETIC TAPES
4.2

MOUNTING AND DISMOUNTING MAGTAPES

The following procedures describe the steps needed for mounting and
dismounting magnetic tape reels on the various drives supported by the
TOPS-10 and TOPS-20 series hardware systems.
Some drives provide for
the automatic threading of the tape onto the tak~-up reel while others
require you to thread the tape manually.
For all drives,
you must
insert a write enable ring in the groove on the back of the tape reel
in order to allow writing.
If this ring is not present, an indicator
light (FILE PROTECT on some drives, WRITE DISABLE on others) will warn
you that writing is inhibited.
TOPS-20 NOTE
If tape drives are allocated to users under control of
the MOUNTR program,
you should use the OPR command
DISMOUNT TAPE drive-name to rewind and unload the
tape(s).
Use the following procedures only with tape
drives directly assigned by users, or if the system
has crashed or the drive has malfunctioned.

4.2.1

TU16 Procedures (TOPS-10 Only)

To mount a tape on the TU16, perform the following steps:
1.

Rotate the
reel
holddown
knob
of
the
lower
hub
counterclockwise as far as it will go, and place the supply
reel over the holddown knob with the groove toward the back.
Hold the reel firmly against the hub flange and turn the
holddown knob clockwise until it is right.

Press BR REL and pull the tape from the supply reel.
The
tape should unwind from the left with the oxide (dull) side
toward the hub.
If the tape unwinds from the top, check that
the reel is mounted with the groove toward the back.

Grasp the tape in both hands with the left hand at the end
and the right hand back about a foot.
Place the tape against
the bottom and left side of the head cover over the threading
slot.
Pull the tape taut and slide it upwards and into the
slot. Lead the tape around the upper right corner of the
vacuum column cover, slide it into the slot between the cover
and the upper tape guide,
and lead it around the guide.
Place the end of the tape over the top of the take-up reel
hub, and wind about six turns of the tape clockwise on the
reel.

Press LOAD to draw tape into the vacuum columns.
Press FWD
and push START to advance the tape to loadpoint. When the
loadpoint marker is sensed, the"tape stops,
the FWD light
goes out,
and LD PT comes on. Note that if tape motion
continues for more than ten seconds,
the tape is beyond
loadpoint.
Press STOP, REV and then START.
The tape should
move back and stop at loadpoint.

Press ONLINE.

4-16

MAGNETIC TAPES
To dismount tapes on the TU16, perform the following actions:
1.

Rewind to loadpoint by pressing OFF LINE, setting the
switch to REWIND, and pressing START.

rocker

Press BR REL and wind the
reel.

supply

Turn the holddown knob counterclockwise and remove the reel.

4.2.2

remaining

tape

onto

the

TU40 and TU41 Procedures (TOPS-l0 Only)

To mount tapes on the TU40 or TU41, perform the following steps:
1.

If the transport is closed, press UNLOAD REWIND to lower the
window.
Pull one end of the reel lock release on the right
hub and place the supply reel over the hub.
If the reel does
not have a cartridge, slip the end of the tape into the shoe
at the lower right of the reel.
If the reel has a cartridge,
place it on the hub so that the projections from the
cartridge fit into the two reel-positioning guides.
The pin
on the motor face plate should go into the opening on the
tape cartridge toggle.

Press LOAD REWIND to load the tape
START to place the unit on-line.

automatically.

Press

To dismount tapes on the TU40 or TU41, perform the following actions:
1.

Press RESET and then UNLOAD REWIND.

When the window has opened, remove the tape by opening
reel lock release and pulling the reel from the hub.

4.2.3

the

TU70, TU71, and TU72 Procedures

To mount tapes on the TU70,
steps:

TU71,

TU72,

perform

the

following

Press the HUB/WINDOW up button to open the transport window.

Push the tape onto right-hand hub so that the tape unwinds
clockwise.
(The tape snaps onto the hub and is automatically
secured.)

Ensure that the end of tape is not twisted and lies flush
the reel.

Press the RESET button, causing the window to close.

Press LOAD REWIND button, putting the tape at load point.

Press START.

READY light goes on.

If the tape did not load correctly, the MACHINE CHECK button
will flash,
and the window will open.
You should then
reposition the tape and repeat Steps 4, 5,
and 6 described
above.

4-17

MAGNETIC TAPES

To dismount tapes on the TU70, TU71, or TU72,
steps:

perform

the

Press RESET.

Press the UNLOAD REWIND button, causing the tape
completely and the transport window to open.

Pull the tape off the hub.

following

rewind

NOTE
The TU70 series magnetic tape drives are able to
accommodate
tape
reels
that
are
enclosed in
cartridges. When mounting,
the cartridge must be
positioned on the hub so that the two tabs on either
side of the cartridge toggle fit into the two slots on
the left side of the right-hand hub.
(The cartridge
-toggle will automatically be opened in the loading
process and closed in the unloading process.)

4.2.4

TU45 Procedures

The supply reel (reel to be read or written) is the top reel on the
drive
(Figure 4-3).
The reel should be positioned in such a way that
the tape will unwind if the reel is turned in a clockwise direction.
To mount tapes on the TU45, perform the following steps:
1.

position the reel on the quick-release hub and press the
actuator.

Thread the tape as follows:

Toward the arrow to the upper left of the supply reel

Over the two top guide wheels from right to left

Down and to the left of the upper white guide wheel

Slightly right and down, to go under the head

Down and to the left of the lower white guide wheel

Down under the capstan

Up and right, toward the arrow to the left of the
reel

hub

takeup

Wrap the tape leader onto the take-up reel so that the tape
will be wound onto the reel when it is rotated clockwise.
Wind at least three turns onto the take-up reel.
Remove all
slack in the tape path.

4-18

MAGNETIC TAPES

After the tape has been loaded and checked for correct
seating in the guides, position the tape at the Load Point by
pressing the LOAD switch.
Recheck tape tracking in the
guides and close the dust cover door.
NOTE
The transport door should remain
closed
during normal operation to achieve maximum
data reliability.

When the load cycle is complete, the tape will stop at the
Load Point.
Then, if the ONLINE indicator is not lit, press
ONLINE.
The transport is now ready to receive additional
commands.

To dismount a tape, do the following:
1.

Press the OFFLINE switch.

Press the REWIND switch; the tape
(beginning of tape) marker.

Press the REWIND switch a second time;
unload sequence.

will

rewind
this

the

BOT

will

start

NOTE
It is not necessary to wait for the tape to
rewind to the BOT marker if an unload is
desired; press the REWIND switch twice in
succession and the tape will rewind and
unload.
4.

4.2.5

Open the transport door
transport door.

and

remove

the

reel.

the

TU77 and TU78/79 Procedures

The TU77 drive can be loaded manually or automatically depending on
the size of the reel that is being loaded. When a 216 or 178mm (8-1/2
or 7 inch) reel is being loaded, the manual procedure must be used.
If a 267mm (10-1/2 inch) reel is used and the reel is in a cartridge,
the cartridge will engage the cartridge interlock and causes the
autoload procedure to be used.
Note that the drive door must be
closed for autoload to occur.
See Figure 4-6 for a chart of loading
methods.
For safety requirements, you cannot load these drives with the doors
open.
The interlock switch cannot be pulled out.
There is an
AUTO/MAN rocker switch for manual load of 10-1/2 inch reels.
The autoload procedure requires a full reel of tape be used.
A full
reel of tape is such that the tape on the reel comes to within 1.59
and 0.64mm (5/8 and 1/4 inch) of the other edge of the reel.
Make
sure the tape reel is a large 267mm (10-1/2 inch) reel.
The supply
reel (containing the tape to be read or written) is the top reel on
the drive
(Figure 4-7).
The reel should be positioned in such a way
that the tape will unwind if the reel is turned clockwise.
You must
insert a write-enable ring on the back of the supply reel to allow
writing on the tape.

4-19

MAGNETIC TAPES

To autoload a tape reel on a TU77, do the following:
1.

Place the supply reel in position on the upper hub,
rotate
until
it
slips
easily
into
place,
and press the
reel-retaining actuator.
NOTE
The supply reel may be contained in
a
wraparound cartridge.
It is not necessary to
remove or open the cartridge.
The cartridge
will
be opened automatically during the
autoload sequence.

Close the drive front door.

Check that power is applied to the tape
on) .

4-20

drive

(power

light

MAGNETIC TAPES

YES

NO
NO

MANUAL LOAD
PROCEDURE

AUTO LOAD
PROCEDURE
MR-S-613-80

Figure 4-6:

TU77, TU78, or TU79 Loading Methods

4-21

MAGNETIC TAPES

AIR BEARING NO.1
SUPPLY REEL

THREAD BLOCK NO.1

I / :I

LOAD FAULT
INDICATOR,

AIR BEARING NO.3

""'f' '

FILE PROTECT
INDICATOR',,,,
ON LINE

INDICA:~~ ' { ~

'",J ~\ "'"
POWER ~
INDICATOR J "'~

CARTRIDGE MOTOR
AIR BEARING NO.2
AIR BEARING NO.4

INDICATOR

LOAD REWON LlNEy

r=~

AIR GUIDE

_--l--l~~+---;-_u-EOT/BOT SENSOR

/";;; /

UNLOAD~vt

):/>/

I TAPE IN PATH

,::"'

INDI;:~~: di\ /,/

DENSITY
DENSITY INDICATOR

1--

___---,--_., :

l /~
~~~\~~~~~JA

LOW
TABS (IN REEL)

LOW TAPE SENSOR
(BEHIND REEL)

BOX

VACUUM
-[-CAPSTAN
ACCESS LATCH

~_____ /c----.

I ~ ~/--.-,
...:r/ SCREW
~.---;-1.----I-----I---~~--....;;::".---I...-~~
TAKE UP REEL

HEAD

TAPE CLEANER

Figure 4-7:

~~~~EU:
SENSOR

MR-S-2018-82

TU77, TU78, or TU79 Tape Path and Controls

Press the RESET switch.

Press the LOAD/REW switch.

The take-up reel will start to turn clockwise.
The supply reel will
turn counterclockwise a
few turns and then rotate forward and eject
the tape into the tape path.
The tape is threaded and wrapped onto
the take-up reel.
For manual loading, keep in mind that the supply reel (containing the
tape to be read or written) is the top reel on the drive (Figure 4-7) .
The reel should be positioned in such a way that the tape will unwind
if the reel is turned clockwise.
You must insert a write-enable ring
on the back of the supply reel to allow writing on the tape.

4-22

MAGNETIC TAPES

To manually load a tape reel on a TU77, do the following:
1.

Place the supply reel in position on the upper hub,
rotate
until it slips easily into place,
and then press the
reel-retaining actuator.

Manually place the tape leader between thread block number 1
and air bearing number 1 (Figure 4-7). Manually thread three
to five inches of tape.

Carefully close the buffer door,
closed securely.

making

sure

the

door

NOTE
Ensure that there is no tape slack or sag
between the supply reel and thread block
number 1.
4.

If a 216 or 178rnrn (8-1/2 or 7 inch)
reel is being loaded,
close the drive front door.
If a 267rnrn (10-1/2 inch) reel is
being loaded, place the AUTO/MAN switch in the MAN position.
This disables the autoload sequence that would normally occur
with a 267rnrn reel.

Check that power is applied to the tape (power light is on).

Press RESET switch.

Press LOAD/REW switch.

To unload a tape on the TU77 or TU78/79, do the following:

4.3

Press RESET switch.

Press UNLOAD switch.

CLEANING MAGNETIC TAPE DRIVES

Cleanliness is essential for proper operation.
Minute particles
dirt trapped between the head and the tape can cause data errors.

Each day you should do the following:
o

Clean the head.
Use a lint-free cloth or cotton swab
moistened in isopropyl alcohol. Wipe the head carefully to
remove all accumulated oxide and dirt.
NOTE
Do not use rough or abrasive cloths to
the head.

clean

Clean the fixed guides and vacuum chamber with a cotton swab
moistened with isopropyl alcohol to remove accumulated oxide
and dirt.
The vacuum column door may be opened to gain
access to the chamber surfaces.

4-23

MAGNETIC TAPES

Clean the rotating tape guides and rubber punch rollers with
a lint-free cloth or cotton swab moistened in isopropyl
alcohol.
Wipe the surfaces carefully
to
remove
all
accumulated oxide and dirt.
NOTE

Do not soak the guides
with
excessive
solvent; it can seep into the guide bearings,
causing contamination or a breakdown of the
bearing lubricant.
o

Clean the capstan with a cotton swab moistened with water.
Wipe dry lightly with a lint-free cloth or cotton swab.

4-24

CHAPTER 5
DISK DRIVES

This chapter describes operating procedures for the disk drives
supported by the TOPS-10 and TOPS-20 series hardware. Drives with
similar functions and like controls are grouped together in the
chapter.

The drive number indicates the logical position of the drive on the
controller and ranges from
to 7. Because a controller is associated
with a channel,
the term "channel number" is often used when
referencing a controller. A specific disk drive is identified by its
channel number and unit number. For example (0,1)
indicates channel
0, drive 1.

5.1

DISK DRIVE CONTROLS AND INDICATORS

Six types of disk drives with removable disk packs, along with their
operator control panels,
are shown in Figures 5-1 through 5-6.
The
figures accompany the description of controls and indicators for each
particular drive.

5.1.1

RP02 and RP03 (TOPS-10 Only)

The disk pack is illustrated in Figure 5-1.
If the main power is on,
a pack loaded and the cover closed, press START to turn on the drive.
After a stabilization delay of about a minute,
the drive loads the
heads and positions'them to cylinder 0.
Press STOP to unload the heads and turn off the drive.
The numbered lights indicate the last cylinder to which the drive
commanded to position its heads.

was

FILE UNSAFE indicates an electrical malfunction in the drive or the
control (pressing STOP resets this indicator if the condition has been
cleared) .
The remaining switches affect the drive only when it is not selected
by the control.
If the switches are manipulated while the drive is
selected, the conditions they represent are applied to the drive when
it is deselected at the beginning of the next function (deselection
occurs even if the new function reselects the same drive) .
with the drive in proper operating order, pressing ENABLE places it
on-line, lighting the large indicator at the left center of the panel.

5-1

DISK DRIVES

Pressing READ-WRITE
program.

allows

unrestricted

use

the

Pressing READ-ONLY lights the associated indicator at
prevents the program from writing on the pack.
Pressing DISABLE takes the unit off-line.

r----- . . .
I

START

I
FILE
I READY I
IL _____ JI
DISABLE

Figure 5-1:

STOP

RP03 Disk Drive

5-2

the

right

and

pack
the

DISK DRIVES
5.1.2

RP04 and RP06

Each panel contains a number of switches,
indicator
CONTROLLER SELECT switch.
(See Figures 5-2 and 5-3.)

lights

and

SWITCHES
WRITE-PROTECT - For normal operation, the WRITE-PROTECT switch is
OFF,
allowing unrestricted use of the pack by the user.
Setting
this switch ON lights the associated indicator light,
and
prevents the user from writing on the pack.
START/STOP - The START/STOP switch is used to power the drive
(ONLINE) and DOWN (OFFLINE).
DISABLE - On the RP04 drive, the DISABLE switch takes
off-line (ready light goes out).

the

drive

STANDBY - The STANDBY switch is used in special circumstances.
Software can place the drive in STANDBY mode. Pressing the
STANDBY switch will then ready the drive for use again.
CONTROLLER SELECT - The CONTROLLER SELECT switch on a dual-ported
drive must be set to the A/B position.
The CONTROLLER SELECT
switches on single-ported drives should be set to either A or B
depending upon how the hardware has been configured.
INDICATOR LIGHTS
READY - The READY light comes on when the drive is loaded and
ready for use.
This occurs after the pack is properly loaded and
the START switch is pushed.
The pack then powers up to the
correct rotational speed,
and the read/write heads position
themselves between the platters. At this point the READY light
comes on.

5-3

DISK DRIVES
CONTROLLER
SELECT

STNDBY

MR-S-617-80

Figure 5-2:

RP04 Disk Drive

5-4

DISK DRIVES

WRITE
STA.AT

CONTROl

PROI(( T

CONTROL

START

STANDBY

CONTROL A B

WRITE PROTECT

READY

DOOR LOCKED

UNSAFE

LAMP TEST SWITCH

7777-2

Figure 5-3:

RP06 Disk Drive

5-5

DISK DRIVES

5.1.3

RM03

The front control panel contains eight controls and indicators.
Figure 5-4.)

(See

START switch - The START switch is a 2-position pushbutton.
Pressing the START switch when the drive is in the power-off
condition (disk pack not spinning), lights the START indicator
and initiates the power-up sequence provided the following
conditions are met:
o

Disk pack is installed.

Pack access cover is closed.

All power supply circuits are on.

START indicator - This indicator will light when the START switch
is
depressed
from
the
off position provided the three
preconditions just mentioned are met.
The light indicates that
power is on.
READY indicator - Once the start sequence has been initiated by
pressing the START switch, the READY indicator will blink once a
second until the disk pack is up to speed.
'When the READY indicator stays on,
conditions have been met:
0

Disk pack is up to speed.

Heads are loaded.

No fault conditions exists.

indicates

the

following

DRIVE SELECT plug - This plug determines the logical address of
the drive.
The address can be changed to any number from 0 to 7
by installing the proper plug.
If no plug is installed, the Plug
Valid line to the controller is false.
FAULT Indicator - The FAULT indicator lights up when one or
of the following fault conditions exist in the drive:
o

Write fault

Head select fault

Read/write fault

Read/write while off cylinder fault

Voltage fault

FAULT CLEAR Switch
This switch is a momentary
contact
pushbutton used to clear the FAULT indicator. Pressing the FAULT
CLEAR switch will extinguish the FAULT indicator only if the
fault condition no longer exists.
WRITE PROTECT Indicator - When this indicator is on, it signifies
that the drive is in the write protect mode. While in this mode,
data cannot be written on the disk pack.

5-6

DISK DRIVES

WRITE PROTECT Switch - This switch is a 2-position pushbutton.
When pressed to the IN position, it lights the WRITE PROTECT
indicator and disables the drive's write circuits. While in this
position, data cannot be written on to the pack.
Releasing this switch back to its OUT position removes the
Disable signal from the write circuits and extinguishes the WRITE
PROTECT indicator.

5-7

DISK DRIVES

START

READY

FAULT

PROTECT

[DJ[illJ[DJ[g

Figure 5-4:

RM03 Disk Drive

5-8

DISK DRIVES
5.1.4

RP20

Each RP20 master disk drive (see Figure 5-5) contains
and control indicators:

these

switches

START/STOP Switch - The drive START/STOP toggle switch starts and
stops a drive.
When set to START, the brake is released, the
disks rotate up to speed, and the heads move to cyclinder O.
When set to STOP, the heads retract, the brake engages, and the
disks stop.
An electrical interlock in the STOP position
prevents a stop if the drive is busy.
READY Indicator - The READY indicator turns on when the drive is
on,
the disk drive speed is up to normal, and the head is on a
track.
ATTN.
Switch - When pressed, the ATTN. pushbutton switch starts
a rezero operation.
Rezero moves the heads to cyclinder 0,
resets the address registers,
and signals attention to the
controller. Device and interrupts are generated for both logical
devices.
WARNING
The ATTN. button should never be
any circumstances.

pressed

under

R/W READ Switch - When in the READ position, no write or erase
operation can be performed.
If set in R/W, all reading and
writing operations are possible.
If the position of this
pushbutton switch is changed during an operation, the condition
does not change until the operation is completed.
Interface X and Interface Y Enable/Disable Switches (Dual Port) The device interface switches have been added to the RP20-A Disk
Drive control panel.
The left switch controls the X interface;
the right switch controls the Y interface.
These enable/disable
switches select the active interfaces by either dedicating the
master and associated drives to a single interface or if both
switches are on, to a Dual Port Device Interface.
NOTE
These X/Y Interface switches should be
set
according to the system configuration prior to
restoring the operating system.
The state of
these switches should not be changed while the
operating system is up.
POWER ON Switch/Indicator - Pressing the POWER ON switch supplies
AC power to the master and slave drives if the ENABLE POWER OFF
switch is in the ENABLE position.
The POWER ON indicator is on
when DC power is applied to the master drive.
ENABLE POWER OFF Switch
with this switch in the ENABLE
position,
the master and slave drives may be powered up by
pressing the POWER ON switch or by a system controlled power up
sequence.

5-9

DISK DRIVES

with this switch in the OFF position, the master and slave drives
are powered down.
Power cannot be restored until switch is
placed in ENABLE position and POWER ON is pressed again.

10414-5

Figure 5-5:

5.1.5

RP20 Disk Drive

RPO?

The RP07

(see Figure 5-6) contains these switches and indicators:

START/STOP switch - The START/STOP toggle switch starts or
the drive.

stops

ON-LINE switch and indicator - The ON-LINE switch sets the disk
on or off line. When the drive is on-line, the ON-LINE indicator
is lit.
WRITE-PROTECT Switch and Indicator
The WRITE-PROTECT toggle
switch enables or disables the drive's write circuit. When
WRrrE-PROTECT is on, the WRITE-PROTECT indicator is lit and data
cannot be written to the disk. When the WRITE-PROTECT is off,
the light is unlit and disk writes are permitted.

5-10

DISK DRIVES
ACCESS Switch and Indicator - The ACCESS switch allows you to
select either port, or both ports, for use.
The indicator notes
your selection.
If AlB is selected, the indicator light is off.
While the disk is in operation, this switch is disabled.
UNIT-NUMBER Indicator - This indicator shows the disk unit number
in your hardware configuration.

5-11

DISK DRIVES

WRITE
PROTECT

START

LA 7
ACCESS A

~~~~/B[j]
STOP

ACCESS B

10743-1

Figure 5-6:

RP07 Disk Drive

5-12

DISK DRIVES
5.1.6

CI (HSC50, RA60, and RA81)

The RA60 and RA81 disk drives are connected to the KL CI20 bus,
and
controlled by the HSCSO disk controller.
The HSCSO allows the drives
to be accessible to multiple KL (SMP) systems.
Refer to the following
hardware manuals for operating information:

5.2

HSCSO User's Guide

RA60 Disk Drive User's Guide

RA80 Disk Drive User's Guide

RA81 Disk Drive User's Guide

MOUNTING AND DISMOUNTING DISK PACKS

The following steps describe how to mount and dismount disk packs.
Extreme care must be taken to avoid physical damage to the pack and
drive.
Do not put anything on top of a drive except empty disk pack
covers.

5.2.1

RP02, RP03, RP04, or RP06 Procedures

To mount an RP02, RP03, RP04, or RP06 disk pack, perform the following
steps:
1.

Slide back or lift the drive cover.

Remove the bottom plate from the disk pack container by
compressing the locking handle on the underside of the pack
bottom.

Be sure that you have the pack with the correct label on
slide the pack straight down onto the disk drive hub.

Turn the pack cover clockwise until the pack is locked into
position.
DO NOT FORCE THE COVER ONCE IT STOPS TURNING.

Pull the pack cover straight up and off the pack.

Close the drive cover and put the empty disk
its base and store it on top of the drive.

Push or toggle the START/STOP switch to the START position.

When the READY light is on, the drive is ready.

To dismount an RP02, RP03,
following steps:

RP04,

RP06

disk

pack

pack,

it;

cover

perform

the

Push or toggle the START/STOP switch to the STOP position and
wait until the pack comes to a complete stop.

Slide back or lift the drive cover.

Slip the pack cover straight down over the pack.

Turn the cover counterclockwise until the pack is free.

Lift the pack straight up until it clears the drive.
5-13

DISK DRIVES

Secure the bottom plate to the pack cover by compressing
locking handle on the underside of the pack bottom.

Close the drive cover.

5.2.2

the

RH03 Disk Pack Procedures

To mount an RM03 disk pack, perform the following steps:
1.

Push the latch and pull up the drive cover.

Compress the locking handle on the underside of the
plate to remove the bottom from the disk pack cover.

Make sure that you have the pack with the correct label on
it, and then slide the pack straight down onto the disk drive
hub.

Turn the pack cover clockwise until the pack is locked into
position.
DO NOT FORCE THE COVER ONCE IT STOPS TURNING.

Pull the pack cover straight up and off the pack.

Close the drive cover and put the empty disk
its base and store it on top of the drive.

Push the START switch.

When the READ light stops blinking, the drive is ready.

pack

bottom

cover

This causes the START light to blink.

To dismount an RM03 disk pack, perform the following steps:
1.

Push the START switch, which causes the START light ·to blink,
and wait until the START light goes off.

Pull up the drive cover.

Slip the pack cover straight down over the pack.

Turn the cover counterclockwise until the pack is free.

Lift the pack straight up until it clears the drive.

Compress the locking handle on the underside of the bottom
plate to secure the bottom plate to the disk pack cover.

Close the drive cover.

5-14

DISK DRIVES
5.2.3

RA60 Disk Pack Procedures

To mount an RA60 disk pack, perform the following steps:
1.

Pull the drawer out, unless this is the topmost drive in
cabinet.

Push the latch on the front panel and lift the drive cover.

Make sure that you have the pack with the correct label on
it.
Slide the pack straight down onto the disk drive hub.

Turn the pack cover handle clockwise until the pack is locked
into position. DO NOT FORCE THE COVER ONCE IT STOPS TURNING.

Pull the pack cover straight up and off the pack.

Put the empty disk pack cover aside, close the
and push the drawer in.

Verify that port switch A or B is in the ON position,
depending on which port is to be accessed by the controller.
When both port switches are in the ON position at the same
time,
either Port A or Port B can be accessed by the
controller.

Push the RUN/STOP switch.

When the READY light is on, the drive is ready.

drive

the

cover,

To dismount an RA60 disk pack, perform the following steps:
1.

Push the RUN/STOP switch and wait until the READY light
off.

·2.

Pull the drawer out.

Push the latch on the front panel and lift the drive cover.

Slip the pack cover straight down over the pack.

Turn the cover counterclockwise until the pack is free.

Lift the pack straight up until it clears the drive.

Close the drive cover and push the drawer in.

5.3

goes

POWERING UP AND POWERING DOWN DISK SYSTEMS

This section describes the steps for powering
disk drives.

5.3.1

and

powering

down

RP20 Procedures

To power up an RP20 disk system, perform the following steps:
1.

Place the POWER switch, located on the front
disk drive, to the ENABLE position.

5-15

the

master

DISK DRIVES
2.

Press the POWER ON button located on the front of the
disk drive.

master

NOTE
If the disk drive does not power up, check the POWER
ON switch in the back of the disk control unit.
If
the switch is in the ON position and the disk drive is
still not powered up, call your DIGITAL Field Service
Engineer.
To power down an RP20 disk system, perform the following steps:
1.

Stop all RP20 disk drives.

Place the POWER switch, located on the front
disk drive, to the OFF position.

5.3.2

the

masber

RP07 Procedures

To power up an RP07 disk drive, perform the following steps:
1.

Place the ON LINE switch located on the
drive to OFF LINE.

front

the

disk

Place the START/STOP switch, located on the front of the disk
drive, to the START position.

wait until lights stop flashing and ON LINE indicator is off.
Place the ON LINE switch located on the front of the master
disk drive to ON LINE.

To power down an RP07 disk system, perform the following steps:
1.

Place the ON LINE switch located on the
drive to OFF LINE.

front

Place the START/STOP switch, located on
master disk drive, to the STOP position.

the

front

5.3.3

the

disk

the

HSC50 Disk Controller Procedures

Before using the CI disk sub system you must configure all HSC50 disk
controllers to use the correct sector size.
To do this, use the HSC50
utility program SETSHO.
In order to verify the sector size parameter,
type the following commands on the HSC50 console terminal:
1.

Type a <CTRL/Y> to get the HSC50> prompt.

Type the command RUN SETSHO<RET>.

When you receive the SETSHO> prompt, type the
SYSTEM<RET>.
The
SETSHO
program
types
configuration information on the HSC50 console
typical print-out is shown in Figure 5-7.

5-16

command SHOW
the
sysb~m
terminal.
A

DISK DRIVES

If the "sector size" parameter on the third line of the
print-out is set to 576, no further action is necessary.
Type the command EXIT<RET> to exit from the SETSHO program.
If· the "sector size" parameter is not set to 576, you must
type the command SET SECTORSIZE 576<RET>.
Now type the
command EXIT<RET>.

The SETSHO program prints the following question on the HSC50
console terminal:
SETSHO-Q Rebooting HSCi
abort:?

type

continue,

Type a Y in response to this question.
6.

The HSC50 now reboots. When the HSC50 software
the new "sector size" parameter is in effect .

. RUN SETSHO
SETSHO>SHOW SYSTEM
28-0ct-1985 09:30:21.27 Boot: 17-0ct-1985 15:01:18.67
version: Y25G
System ID: %XOOOOOOOOE708
Front Panel Enabled
Sector size-576
Console Dump Enabled
TU58 Dump Disabled
Restart - Warm
Automatic Diagnostics Enabled
Periodic Diagnostic Interval- 1
Enabled
DISK allocation class = 0
Tape allocation class
Start command file Enabled
SETSHO>
Figure 5-7:

reloaded

Up:258:29
Name: HSC008

TOPS-10 SHOW SYSTEM Output

For information on powering up and powering down the HSC50
controller, consult the latest version of the HSC50 User Guide.

5.4

disk

STARTING AND STOPPING DISK DRIVES

This section describes the steps for
kinds of disk drives.

5.4.1

starting

and

stopping

various

RP20 Disk Drive Procedures

To start an RP20 disk drive, perform the following steps:
1.

Place the START/STOP toggle switch to the START position.

wait for the READY light to illuminate.

Follow these procedures for each RP20 disk drive you plan on using.
To stop an RP20 disk drive, place the START/STOP toggle switch to
STOP position.

5-17

the

DISK DRIVES
5.4.1.1 Switching an RP20 Disk Drive between Systems - If the RP20
drive is equipped with the dual-port feature, you can disable both
ports and then enable the port for the system on which the drive is to
be used.
Then press the ATTN button once to get the attention of the
system to which the drive has been cQnnected.

5.4.2

Starting an RP07 Disk Drive

To start an RP07 disk drive, perform the following steps.
1.

Place the START/STOP toggle switch to the START position.

wait for the on-line light to illuminate.

Follow these procedures for each RP07 disk drive you plan on using.
NOTE
When the RP07 is brought on-line
light (A or B) is illuminated.

5.4.3

the

access

control

Stopping an RP07 Disk Drive

To stop an RP07 disk drive, perform the following step.
1.

5.4.4

Place the START/STOP toggle switch in the STOP position.

RA60 and RA81 Procedures

To start an RA60 or RA81 disk drive, perform the following steps:
1.

Verify that the port switch A,
B,
or
depending on which port you are using.

Press the RUN/STOP switch.

wait for the READY light to come on.

and

Follow these pr9cedures for each RA60 or RA81 disk drive you
use.

plan

set,

To stop an RA60 or RA81 disk drive, press the RUN/STOP switch and wait
for the READY light to go off.

5-18

DISK DRIVES
5.5

FORMATTING DISK PACKS
NOTE
The RP07, RP20, RA60, and RA81 disk packs are already
formatted.
If you need to have an RA60 or RA81 disk
pack reformatted, contact your Digital Field Service
Representative.

Formatting and mapping disk packs is required prior to their first
use.
This procedure is also recommended if a disk pack develops
search errors or other problems such as bad spots on the pack.
Formatting writes
(or rewrites) a header record at the beginning of
each sector so that the hardware can position itself when reading or
writing on the disk.
Mapping is the process of writing and reading
each disk block, or sector, a number of times to search for bad
blocks.
A log of any bad blocks is kept and is output in two
duplicate BAT blocks.
Because the formatting process destroys all data on the disk pack, you
should first run the BACKUP program and save any important files.
(Refer to the TOPS-10 Operator's Guide for information on BACKUP.)

5.5.1

RP02s and RP03s with TOPS-10 DCRPE

RP02s and RP03s can all be formatted in a timesharing environment
using the DCRPE program.
The requirements for running DCRPE are:
o

You must be logged in under [1,2], preferably on a hard
terminal.

copy

The disk pack must be mounted on a private
must not have been ASSIGNed or MOUNTed.

pack

The "write header" switch inside the appropriate RP10 disk
controller must be set to enable write headers (LK OUT
position) .

drive;

the

Proceed as follows:
Step

Function

.R DCRPE[6,6] <RET>

Run DCRPE,
which
is
usually
stored
in
the
hardware
and
diagnostic area [6,6].
DCRPE will
then enter into a dialogue with
you.

TYPE THE PHYSICAL NAME
OF THE DISK PACK DRIVE:

Reply with the physical designation
of the drive; for example, DPAO or
DPB2.

DO YOU WISH TO FORMAT
THE PACK? Y or N

Y
will
continue
with
the
formatting;
N
will
skip
the
formatting and go to the mapping
questions that follow the
NOTE
below.

NAME THE DEVICE FOR
ERROR REPORTING:

Enter the logical or physical name
of the device for error reports;
for
example,
TTY.
A carriage
return defaults to disk.
5-19

DISK DRIVES
***ARE YOU SURE YOU WANT
TO PROCEED? ALL
INFORMATION ON DEVICE
dev WILL BE LOST BEYOND
THIS POINT.
Y or N <CR>-

This is your last chance to exit
before losing data or disk.
Type Y
if all necessary
data has been
saved.

FORMATTING IN PROGRESS
hh:nun:ss

DCRPE notifies you that it
started to format the disk
gives you a timestamp.

HEADERS HAVE BEEN WRITTENVERIFICATION NOW IN PROGRESS

DCRPE has completed writing the
headers and is now reading them to
verify their validity.

FORMATTING COMPLETERECOMMEND MAPPING THE PACK
TOTAL ERRORS:n
TOTAL FORMATTING TIME=
hh:nun:ss

DCRPE
has
completed
the
verification:
you are notified of
the number of errors (n) and of the
time it took for the formatting
process.

DO YOU WISH TO MAP THE PACK?
Y or N <CR>-

Y will continue with mapping;
N will exit to the monitor.

At this time you can switch the "write headers"
controller back to the WH position.

switch

the

NOTE
If you are formatting a new pack,
one that has not
been used since it came from the factory, it will not
have the valid HOM and BAT blocks required by the
mapping portion of DCRPE.
Run the ONCE program in
user mode, and select the DEFINE startup option to
structure the pack,
give it a scratch name, and
initialize both the HOM and BAT blocks.
You can find
a detailed description of the ONCE program in Appendix
A of the TOPS-IO Software Installation Guide.
Next, reload the DCRPE program.
Answer N to the
question DO YOU WISH TO FORMAT THE PACK?
You will
then be prompted as follows:
Step

Function

USE OLD BAT BLOCK AS BASE?
Y or N <CR>-

You must reply Y (for Yes) .

DO YOU WISH TO RETAIN THE
HOME BLOCKS
IF YES, THE PACK WILL HAVE
TO BE REFRESHED
IF NO, THE HOME BLOCK
PARAMETERS WILL HAVE TO
BE REDEFINED IN ONCE
Y or N <CR>-

Again, answer Y.

NAME THE DEVICE FOR
CRASH RECOVERY DATA:

The usual reply is DSK.

5-20

has
a.nd

disk

DISK DRIVES
NAME THE DEVICE FOR
ERROR REPORTING:

This question is asked only if you
skipped formatting.
Answer with
TTY.

***ARE YOU SURE YOU WANT
TO PROCEED? ALL
INFORMATION ON DEVICE
dev WILL BE LOST BEYOND
THIS POINT
Y or N <CR>-

Type Y if all necessary
have been saved.

MAPPING IN PROGRESS
hh:mm:ss

DCRPE notifies you
that
it is
mapping and gives you a timestamp.

END OF PASS 1; ELAPSED TIME
=hh:mm:ss

DCRPE has read all the blocks once
in the time shown and has found n
errors.

n ERRORS THIS PASS CONTINUE?
A or Y or N <CR>-

Type A to continue reading all the
blocks a total of ten times without
stopping.
Type Y to read the
blocks one more time and ask the
question again.
Type N to end
mapping at this pass.

TOTAL MAPPING TIME
FOR dev=hh:mm:ss
HISTORY OF BAD BLOCKS:
START OF BAD BLOCK:
bbbbbb=ccc,hh,ss
SIZE OF BAD REGION IN
BLOCKS=n

After the final pass, DCRPE prints
out the total mapping time and the
location, size,
and number of any
bad regions on the disk.
Each bad
area is located by block number
bbbbbb, as well as cylinder (ccc),
head
(hh)
and sector
(ss).
The
size of each bad region is given
by n.
After all bad areas have
been logged, the total number of
bad regions
(q) and bad blocks (p)
are printed.
This same information
is also stored in the two duplicate
BAT
blocks.
The program then
exits.

p=BAD BLOCKS TOTAL
q=BAD REGIONS TOTAL
EXIT

data files

Now, run the ONCE program in user mode with the REFRESH startup option
to re-initialize the two duplicate HOM blocks and clear the Storage
Allocation Table (SAT).
This procedure frees up any lost blocks and
eliminates
fragmentation
of files since the subsequent BACKUP
operation, RESTORE, will reload the files systematically.

5.5.2

Formatting RP02s and RP03s with TOPS-l0 DDRPC

RP02 and RP03 disks can also be formatted in exec mode using the DDRPC
program.
This program gives you the additional capability of
formatting single cylinders of a disk pack and single surfaces of a
cylinder.

5-21

DISK DRIVES

The requirements for running DDRPC are:
o

The "write header" switch inside the appropriate RP10 disk
controller must be set to enable write headers (LK OUT
position) .

Drives that are not to be formatted must be placed
with the STOP switch.

Load and start the DDRPC program;
description of the disk system.

will

initialize

off

and

line

PDP-10 RP10 Disk Pack Reliability Test (DDRPC) Version 000,002
Memory Map =
From
To
SIZE/K
000000 077777 32K
POWER FREQUENCY = 60 HZ
Write Enable Entire Disk Y or N <CR> Y <RET>
DF10 in KA Addressing Mode
Number of Drives= 4
DPAO
RP03, STATUS-ON LINE
DPA1
RP02, STATUS-OFF LINE
DPA2
RP03, STATUS-OFF LINE
EDDT
You are now ready to format an entire disk or selected portions of it.

Examples
1.

Formatting an Entire Disk Pack

You type everything that is underscored:
Step

FWlction

EX FORMAT$X <~T>

You want to use the formatting
capability of the DDRPC diagnostic
program.
(Note that $ indicates
pressing
the ESCape or ALTmode
key. )

WANT TO FORMAT THE DISK?
Y or N <CR> - Y <RET>

Type Y to format pack.

WHAT DRIVE?-<CR>O <RET>

Format drive O.

WANT TO FORMAT ENT IRE
DISK? Y or N <CR>-Y <RET>

The complete disk pack on drive 0
is to be formatted.

VERIFY ERROR,
VERIFY ERROR,
VERIFY ERROR,
VERIFY ERROR,

DISK ADDR,
DISK ADDR,
DISK ADDR,
DISK ADDR,

DPA=O
DPA=O
DPA=O
DPA=O

CYL=013
CYL=056
CYL=103
CYL=277

***********

SURF=02
SURF=Ol
SURF=04
SURF=06

EXIT TEST-FORMAT RUN TIME 0:15:20

***********

5-22

SECT=03
SECT=Ol
SECT=03
SECT=OO

DISK DRIVES
The error messages above indicate that the disk failed to format the
indicated disk addresses successfully.
The disk may be completely
formatted again or the individual addresses
(surfaces)
may
be
reformatted as indicated in the example below.
2.

Formatting a Portion of the Disk Pack

You type everything that is underscored:

Step

Function

EX FORMAT$X <RET>

Format a portion of a disk pack.
(Note that $ indicates where you
press the ESCape or ALTmode key.)

WANT TO FORMAT THE DISK?
Y or N <CR>-Y <RET>

Type Y to format pack.

WHAT DRIVE?-<CR>O <RET>

Format drive O.

FORMAT ENTIRE DISK?

To format only
disk.

portion

the

Y or N <CR>-N <RET>
CYL(8)=100 <RET>

Cylinder 100 (octal).

SURF (8)=Q <RET>

All sectors of surface O.

CYL(8)=102 <RET>

Cylinder 102.

SURF(8)=~

<RET>

All surfaces.

<RET>

B is an illegal character.

CYL(8)=~

?HUH?
CYL(8)=217 <RET>

Cylinder 217.

SURF(8)=40 <RET>

40 is an illegal surface address.

?HUH?
CYL(8)=217 <RET>

Cylinder 217 again.

SURF (8)=! <RET>

Surface 4.

CYL(8)=§ <RET>

Either E or X at this point causes
the program to ask if there is
another drive to be formatted
(or
tested) .

TEST WHAT DRIVE?-<CR>E <RET>

The formatting
for
the
above
cylinders
and surfaces will be
done, error messages may appear as
in the above example, and EXIT TEST
will be output.

At this time you can switch the "write headers"
controller back to the WH position.

5-23

switch

the

disk

DISK DRIVES
5.5.3

Formatting RP04s and RP06s with TOPS-IO DDRPI

RP04s and RP06s can be formatted and mapped in either
environment or stand-alone using the DDRPI program.

timesharing

DDRPI (Timesharing)
Running DDRPI during timesharing requires the following:
o

You must be logged in under [1,2].

Packs to be formatted must not be
list.

The following files must be in your area:

the

system

structure

DIAMON . S.AV
DDRPI. S.AV
KLDDT. SAV
SUBRTN. SAV
Proceed as follows, type everything that is underscored:
. ASSIGN DSK LPT <RET>
.RUN DIAMON <RET>

Direct printer output file to disk .
Load and start the diagnostic monitor.
DIAMON will then request a command.

DIAMON CMD-

Enter "DDRPI"
to
formatting dialogue.

start

the

disk

The DDRPI dialogue for formatting RP04 and RP06 type disk drives is
rather lengthy.
Print out the DDRPI.HLP file and use it as referenc'e.
The dialogue questions and their suggested responses are fully
detailed.

5.5.4

Formatting RP04s and RP06s on TOPS-20

To format an RP04 or RP06 disk pack while TOPS-20 is timesharing,
you
must use a single ported disk drive or one channel only (A or B) on a
dual ported drive.
Follow this procedure:
1.

Start OPR.

Type PUSH.

Type ENABLE.

Type FORMAT.
CAUTION
Format only one disk pack at a time.
If
you run more than one FORMAT program
simultaneously,
you
can
destroy
information on the packs. Also, use the
FORMAT program only when there is
just
one disk pack on a channel on-line;
otherwise you could crash the system.
However,
the VERIFY mode allows more
than one disk pack per channel to be
on-line.

5-24

DISK DRIVES

Type RP04 or RP06 to indicate the kind of pack to format,
type HELP to print the help text.

If FORMAT prints THE FOLLOWING UNIT IS AVAIL., type Y to use
that unit; otherwise, type N.
If you type N and other units
of the correct kind are available, FORMAT prints the above
message again.
When no units of the correct kind are available,
FORMAT
prints a message starting with SORRY - THERE ARE NO DRIVES
and then exits.
You should then type CTRL/X to return to
PTYCON.
Later,
when a drive is available, try this entire
procedure again. A drive is available when it is the correct
type for the pack you specify (RP04 or RP06) , when it is
off-line, and when it is not in use by a diagnostic.

After you type Y for an available unit, place the pack to be
formatted on the drive.
Put the drive on-line, and then
write-enable the drive.
Then press RETURN to the FORMAT
program.

Type F, V, or B.

F formats the pack and destroys all data on the pack.

V verifies (maps the bad regions on)
a formatted
pack.
It creates new BAT blocks first and then puts
entries in the BAT blocks for any bad regions found
on the disk. Data, other than the BAT blocks, is not
destroyed.

B formats and then verifies.

When formatting a pack having data indicating a structure,
FORMAT asks if you are sure you want to reformat.
Type Y to
reformat; otherwise, type N.
Formatting a disk pack is a lengthy procedure.
Typing CTRL/T
during the formatting operation will tell you how much of the
pack is formatted.

10.

When formatting and/or verification end(s),
FORMAT asks if
you want to format another pack.
Type Y for yes, N for no.
If you type Y, go back to Step 4.

11.

After you type N in Step 9, type CTRL/X to return to PTYCON.
----- HINT ----For more detail on FORMAT, type HELP to FORMAT,
or
give the command PRINT HLP:FORMAT.HLP for a listing of
the FORMAT help text.
Example

OPR>PUSH
TOPS-20 Command Processor 7.0
@ENABLE
$ FORMAT
TOPS-20 ON-LINE FORMATTER FOR DISK PACKS ON RH20'S, VERSION IS 5(1)
ENTER TYPE OF PACK TO BE USED. (OR HELP)
PICK ONE: ( HELP RP04 RPOS RP06 ) - RP06
5-25

DISK DRIVES
THE FOLLOWING UNIT IS AVAIL.
DRIVE-5 RH-540
DO YOU WISH TO USE THIS ONE ?("Y" OR "N" <CR»

- Y

OPR ACT'N REQ'D:
DRIVE-5 RH-540
CYCLE UP PACK TO BE FORMATTED AND WRITE ENABLE THE DRIVE
HIT <CR> WHEN READY
- BEWARE - FORMATTING DESTROYS ALL EXISTING PACK DATA
OPTIONS ARE: FORMAT ONLY (F), VERIFY ONLY (V), DO BOTH (B)
PICK ONE (F,V,B) - ~
THE SERIAL # OF THE DRIVE IS - 73.
PACK NAME IS: PS
ARE YOU SURE YOU WANT IT RE-FORMATTED
22-JUN-78
22-JUN-78
22-JUN-78
22-JUN-78
22-JUN-78
22-JUN-78

? ("Y" OR "N" <CR»

10:35:08 STARTING FORMAT OPERATION
10:43:02 OPERATION 20.% COMPLETED.
10:57:19 OPERATION 40.% COMPLETED.
11:04:02 OPERATION 60.% COMPLETED.
11:10:56 OPERATION 80.% COMPLETED.
11:17:43 FORMAT COMPLETED

CURRENT BLOCK
CURRENT BLOCK
CURRENT BLOCK
CURRENT BLOCK

#61941.
#123882.
#185823.
#247761.

OPR ACT'N REQ'D:
DRIVE-5 RH-540
REMOVE PACK FROM THE DRIVE
HIT <CR> WHEN READY
FORMAT ANOTHER PACK?

("Y" OR liN" <CR»

- N

[EXIT]
@

PTYCON>
----- Requirements ----OPERATOR, WHEEL, or MAINTENANCE capability required.
The program must be run under a timesharing job, not a batch job.
----- Error Message ----USER DOES NOT HAVE PROPER PRIV. TO RUN THIS PROGRAM !!
WHEEL, OPERATOR, OR MAINTENANCE CAPABILITY REQUIRED
Although you do not need to enable capabilities to run FORMAT,
the
logged-in directory under which you run FORMAT must have at least one
of the required capabilities.
You can run FORMAT under an <OPERATOR>
which has OPERATOR capability.

5.6

CLEANING DISK DRIVES

Other than keeping the outside of the drive and the cover of the packs
clean,
you should leave this task to your Digital Field Service
representative.

5-26

CHAPTER 6
FLOPPY DISKS

A floppy disk is a single, record-like platter which is housed in a
protective cover.
A narrow slot in this cover allows the surface to
be accessed by the drive heads.
During system installation,
the
front-end software is loaded from floppy disks and transferred to the
regular disk system.
During normal operation of the
computer
thereafter, the floppy disks are used only occasionally.
Such use may
involve booting the system if normal methods fail,
or mounting a
floppy with diagnostic programs for trouble-shooting by Digital Field
Service.
As you face the two floppy disk units, unit 0 is
unit 1 is the right one.

6.1

the

left

one,

and

INSERTING AND REMOVING FLOPPY DISKS

To insert a floppy disk (Figure 6-1), first choose the correct unit
and press the pushbutton in the middle of the unit to allow the
spring-loaded front cover to open.
Insert the floppy disk with the
narrow slot toward the back of the drive and the label up.
Then push
the bar on the cover to lock it.
To remove a floppy disk, press the pushbutton again to open the
cover and slide the floppy disk out.

front

NOTE
Do not open the covers
being accessed.

6.2

while

the

floppy

disks

are

HANDLING FLOPPY DISKS

To prolong the life of a floppy disk and to prevent errors, you should
handle floppy disks with reasonable care.
You should follow the
handling recommendations given below to prevent unnecessary loss of
data or interruptions of system operation.
o

To attach visual information to a floppy disk,
first write
the information on a label,
then attach the label to the
floppy disk.
Do not write on the floppy disk.

Do not use paper clips on a floppy disk.

When you write on the outer jacket in which you store a
floppy disk, do not use anything that leaves flakes, such as
lead or grease pencils.
6-1

FLOPPY DISKS

Do not touch the surface exposed in the slot or
hole.

Do not clean the floppy disk in any manner.

Keep the floppy disk away from magnets or tools that may have
become magnetized.
Exposure to a magnetic field may cause a
loss of data.

Do not expose the floppy disk to a heat source or sunlight.

Always return floppy disks to
them to protect them from
horizontally.

the envelopes supplied with
dust and dirt, and store them

Protect empty envelopes
materials.

liquids,

Do not place heavy items on floppy disks.

Do not store floppy disks on computer cabinets or
where dirt can be blown by fans.

If a floppy disk has been exposed to less than 59 degrees
Fahrenheit
(15 degrees Centigrade) or more than 90 degrees
Fahrenheit (32 degrees Centigrade),
let it stay in the
computer room about five minutes before you use it.

Figure 6-1:

from

Floppy Disk

6-2

dust,

small

and

index

metallic

places

INDEX

-AAccess control light
RP07, 5-18

-cCard readers, 2-1
cleaning, 2-4
control panel, 2-1
CRI0, 2-1
Cards, 2-4
Carriage control tape
LPI0, 1-29
Character translator RAM, 1-34
Cleaning procedures
card readers, 2-4
DECtape drives, 3-2
disk drives, 5-26
laser printers, 1-40, 1-53
line printers, 1-34
LNOl, 1-40
LN03, 1-53
tape drives, 4-23
Cleaning supplies, ix
CONFIG.CMD file, 4-1
Control panels
card reader, 2-1
disk drives, 5-1
laser printers, 1-35, 1-40
line printers, 1-1, 1-14
LNOl, 1-35
LN03, 1-40
LPI0, 1-24
magnetic tapes, 4-1, 4-7, 4-8
RM03, 5-6
RP02 and RP03, 5-1
RP04 and RP06, 5-3
RP07, 5-10
RP20, 5-9
TU45, 4-7
TU70/71/72, 4-8
TU77, 4-11
TU78/79, 4-14
Controlling RAM
character translator, 1-34
CRI0 card readers, 2-1
-DDAVFU (direct access vertical
format unit), 1-11
LP07, 1-21
DCRPE program, 5-19
DDRPC program, 5-21
DDRPI program, 5-24
DECtape, 3-1
DECtape drives, 3-2
cleaning, 3-2

Direct access vertical format
unit (DAVFU), 1-11
LP07, 1-21
Disk controllers, 5-13
Disk drives, 5-1
cleaning, 5-26
Disk packs
dismounting, 5-13
formatting, 5-19, 5-24
mounting, 5-13
preformatted, 5-19
Dismounting DECtapes
TU56, 3-1
Dismounting disk packs
RA60, 5-15
RM03, 5-14
RP02/RP03, 5-13
RP04/RP06, 5-13
Dismounting tapes, 4-16
TU16, 4-17
TU40/41, 4-17
TU45, 4-19
TU70/71/72, 4-18
TU77/78/79, 4-23
Dry imager, 1-38, 1-43
Dual-porting RP20s, 5-18
-FFile
CONFIG.CMD, 4-1
MAKRAM.HLP, 1-34
Floppy disk drives, 6-2
Floppy disks, 6-1
inserting, 6-1
removing, 6-1
FORMAT program, 5-24
Formatting disk packs, 5-19, 5-24
RP02 and RP03, 5-19, 5-21
RP04, 5-24
RP04 and RP06, 5-24
RP06, 5-24
Forms
alignment
LP05, 1-9
LP14, 1-9
installation
LP07, 1-17
LPI0, 1-27
-H-

HSC50 disk controllers, 5-13,
5-16
-IIndicators
LN03, 1-40

Index-l

-L-

-p-

Laser printers, 1-40
cleaning, 1-40, 1-53
dry imager, 1-38, 1-43
LNOl, 1-35
LN03, 1-40
toner, 1-38, 1-43
Line printers, 1-1
carriage tape, 1-29
cleaning, 1-34
error conditions, 1-2, 1-15,
1-25
indicators and switches, 1-1,
1-14, 1-24
LP07, 1-15
operating procedures, 1-1, 1-14
LNOl, 1-35
cleaning, 1-40
dry imager, 1-38
LN03
cleaning, 1-53
toner, 1-43
Loading tapes, 4-19
LP05 line printer, 1-3
LPI0
carriage tape, 1-29
Control panel, 1-24
error conditions, 1-25
indicators and switches, 1-24
operating procedures, 1-24
LP14 line printer, 1-4
LP26 line printer, 1-5
LP27 line printer, 1-6
-M-

Magnetic tapes, 4-1
dismounting, 4-16
mounting, 4-16
Maintenance
preventive, ix
MAKRAM. HI.. P file, 1-34
MAKVFU program, 1-21
Mounting DECtapes
TU56, 3-1
Mounting disk packs
RA60, 5-15
RM03, 5-14
RP02/RP03, 5-13
RP04/RP06, 5-13
Mounting tapes, 4-16
TUI6, 4-16
TU40/41, 4-17
TU45, 4-18
TU70/71/72, 4-17
TU77, 4-19
MOUNTR program, 4-16
-0-

ONCE program, 5-20, 5-21

Paper
adjustment
LP07, 1-17
installation
LNOl, 1-37
LN03, 1-42
LP05, 1-8
LPI0, 1-27
LPI4, 1-8
LP26, 1-10
LP27, 1-10
jams
LN03, 1-42
LPI0, 1-29
Powering down disk drives
RP07, 5-16
RP20, 5-16
Powering up disk drives
RP07, 5-16
RP20, 5-15
Preventive maintenance, ix
Printers
laser
LNOl, 1-35
LN03, 1-40
line, 1-1
LP05, 1-3
LP07, 1-15
LPI4, 1-4
LP26, 1-5
LP27, 1-6
Program
DCRPE, 5-19
DDRPC, 5-21
DDRPI, 5-24
FORMAT, 5-24
MAKVFU, 1-21
MOUNTR, 4-16
ONCE, 5-20, 5-21

-R-

RA60 disk drives, 5-13
RA81 disk drives, 5-13
RAM
character translator, 1-34
Ribbon installation
LP05, 1-13
LP07, 1-22
LPI0, 1-32
LPI4, 1-13
LP26, 1-13
LP27, 1-13
RP07 disk drives
access control light, 5-18
starting, 5-18
stopping, 5-18
RP20s
dual-porting, 5-18

Index-2

-5-

Starting disk drives
RP07, 5-18
Stopping disk drives
RP07, 5-18
Supplies
cleaning, ix
-T-

Tape drives, 4-1
cleaning, 4-23
Tapes
dismounting, 4-16, 4-18
magnetic, 4-1
mounting, 4-16, 4-17
Toner, 1-38, 1-43
LN03, 1-52
TU16 tape drives, 4-1
TU40 tape drives, 4-4

TU45 tape drives, 4-7
TU70 tape drives, 4-8
TU71 tape drives, 4-8
TU72 tape drives, 4-8
TU77 tape drives, 4-11
TU78/79 tape drives, 4-14

-uUnloading tapes
TU77/78/79, 4-23

-vvertical format unit (DAVFU)
LP07, 1-21
vertical format unit (VFU) , 1-29
VFU (Vertical format unit), 1-29
VFU (vertical format unit)
LP07, 1-21

Index-3

TOPS-I0/TOPS-20
Operator's Hardware Device
and Maintenance Guide
AA-KZ39A-TK
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