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Document:	TSZ05 Tape Drive Owner's Manual
Order Number:	EK-TSZ05-OM
Revision:	001
Pages:	48
Original Filename:

OCR Text

EK-TSZ05-OM-001

Tape Drive
-

Owners Manual

Prepared by Educational Services
—

Digital Equipment Corporation

1 st Edition, May 1990

SR,

This document was produced using VAX DOCUMENT V1.1. Book production
was done by Educational Services Development and Publishing in Merrimack,
N.H.

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.

Restricted Rights: Use, duplication, or disclosure by the U.S. Government is
subject to restrictions as set forth in subparagraph (c) (1) (ii) of the Rights in
Technical Data and Computer Software clause at DFARS 252.227-7013.

FCC Notice:

WARNING: The equipment described in this manual generates, uses, and may
emit radio frequency energy. The equipment has been type tested and found to
comply with the limits for a Class B computing device in accordance with the
specifications in SubpartJ of Part 15 of FCC Rules, which are designed to provide
reasonable protection against radio and television interference in a residential
installation. However, there is no guarantee that interference will not occurin a
particular installation. If this equipment does cause interference to radio or
television reception, the user is encouraged to try to correct the interference.
The postpaid READER'S COMMENTS form in this document requests the user's
critical evaluation to assist in preparing future documentation.

The following are trademarks of Digital Equipment Corporation:

DEC
DECmate
DECset
DECsystem-10
DECSYSTEM-20
DECUS

DECwriter
DIBOL
LP37
MASSBUS
PDP
P/0OS

Scholar
ULTRIX
UNIBUS
VAX
VMS
VT

dlilgliltiall

Contents
About This Manual

vii

1.1

INTRODUCTION. . ......

1.2

SPECIFICATIONS...... e

INTRODUCTION
... . vl
e e

e e

141

e e

1-2

Electrical Specifications ........e .

1-2

1.2.1

1.2.2

Mechanical Specifications. .............. e

—

1.2.3

Environmental Specifications . . .................. ...

124

Performance Specifications. . .. .....................

1-3

1.3

1.3.1

Preinstallation Considerations . .. ................. ..

132

1.3.3

Environment ........................... e

2
21

StaticElectricity .............c.0urn..

14
1-5

1-5

OPERATION
INTRODUCTION................ccouuunin.. e L2

FRONTPANEL ............... e R

2-1
24

2.3.1

Automatic Tape Loading ........... e e, .

232

ManualTapeLoading

..............cuuuui... T

LOADING TAPE ....... e e,

2.3

SITE PREPARATION

1-2

24.1

2.4.2

.................... e

2-8

.................... e e

2-12

Automatic Tape Unloading......... e

2-12

UNLOADINGTAPE

Manual Tape Unloading........... e e e 2-13

Contents

TROUBLESHOOTING AND MAINTENANCE

3.1

3.2
3.2.1
3.2.2
3.3
3.3.1
3.3.2
3.3.3

t
it it
INTRODUCTION. ... ..ttt itt
i,
BASIC TROUBLESHOOTING.............
Front Panel Error Reporting ............ e
SCSI Error Reporting ................ e
USER MAINTENANCE.............. ee
20 Hour Maintenance ............. e e
40 Hour Maintenance .............0iuitiniirnenrns
6 Month Maintenance ............ e e

3-1

3-1
3-1
3—4
3—6
3-7
3-10
3-18

Figures

2-1
2-2
2-3
2-4
2-5
26
2-7
2-8

3-1
3-2
3-3
3—4
3-5
36
3-7
3-8
3-9
3—-10
3-11
3-12

22
24
25
2-6

.. ce.
... .. .......
TSZO5FrontPanel.....
... e
..
..
...
.........
.
Power Cord Attachment
CrimpingTool ........... ... e .
Installing a Write-EnableRing .......................
... ... ........
LoadingaTapeReel..
Loadmg .............
Manual
for
Drive
Tape
the
Accessing
... ... i .
TapePath........

2-7
2-9
2-10

Accessing the Tape Drive for Manual Unloading ..........

2-14

.. ..., e ..
.....
...
FrontPanel LEDs .........
.. .
...
... ...
Example of 01100 Error Code ... .........
Gaining Access to the Tape Path (20 Hour Maintenance) ...
Cleaning the Read/Write Head (20 Hour Maintenance) . . . ..
Gaining Access to the Tape Path (40 Hour Maintenance) ...
Cleaning the Read/Write Head (40 Hour Maintenance) . . . ..
.
... ... .......
Cleaningthe TapeCleaner.............
Cleaning the Tachometer Roller.......................
... ... ..
...
... .. ...
Cleaningthe Take-upHub .......
e e e
Cleaning the Roller Guides ....... e
e
..................
CleaningtheSensors
Removing the Air Filter . . . .. ......... e

32
3-2
3-8
3-9
3-11
3-12
3-13
3-14
315
3-16
3-17
3-18

Contents

Tables
1-1

Electrical Specifications . .

...

1-2

Mechanical Specifications. .

2-1

Switches and Indicators . . . .

3-1

Error Codes/Corrective Action

3-2

SenseKeys...............

3-3

Additional Sense Codes ..

Maintenance Matrix........

...

L T
L

L O A

% B
®

1 2
M

3‘3
@

UUUUUUU

3—4
&5

[

About This Manual

OVERVIEW
This manual provides information necessary for installing, operating, and
performing basic troubleshooting and maintenance on the TSZ05 Tape
Drive.
The information in this manual is directed toward Digital customers and
is intended to address the user’s need for information on the TSZ05 Tape
Drive.

STRUCTURE OF THE MANUAL
CHAPTER 1 provides general information and describes the physical
characteristics of the TSZ05 Tape Drive. This chapter also contains the
electrical, mechanical, and environmental specifications.
CHAPTER 2 provides information on operating the TSZ05 Tape Drive.
CHAPTER
3 provides information on basic operator troubleshooting and
maintenance.

NOTES, CAUTIONS, AND WARNINGS
The following conventions are observed in this manual.

NOTE

Used to highlight important information or explanations.

CAUTION

Used to highlight areas that could cause damage to the
equipment or corrupt the data on the system.

WARNING

Used to call attention to areas that could injure personnel.

vii

viii

About This Manual

RELATED DOCUMENTATION
The following publications also support the TSZ05 Tape Drive.
Title

Part Number

T'SZ05 Pocket Service Guide

EK-TSZ05-PS

TSZ05 Technical Manual

EK-TSZ05-TM

TSZO05 Installation Guide

EK-TSZ05-IM

ARG

INTRODUCTION

1.1

INTRODUCTION

The TSZ05 Tape Drive is a 1600 bpi magnetic tape drive designed to
provide for an interchange of data between systems and to provide
backup for disk drives. The TSZ05 Tape Drive exchanges data with other
components of a system and transfers that data to and from half-inch
magnetic tape on 7 inch, 8.5 inch, and 10.5 inch reels.

The TSZ05 Tape Drive consists of three functional components: the
interface, the drive electronics, and the drive mechanism. These three
components interact to accomplish the various functions performed by the
tape drive.
Data to be written on the magnetic tape is received from the Small
Computer Systems Interface (SCSI) bus, and data read from the
magnetic tape is transferred to the SCSI bus. A microprocessor is used
to accomplish this transfer of data to and from the magnetic tape. The
microprocessor interprets commands from the interface to:

Accelerate and decelerate the tape

Position the tape at the read/write head

Detect tape position

Control formatting

Pmmde status outputs

The intei'face translates SCSI commands into drive executable commands,
and translates tape drive data and status signals into the appropriate
format for the SCSI bus.

The phase-encode method of recording is used to write data on the
magnetic tape in accordance with ANSI Standard X3.39-1986. Nine
tracks (eight tracks of data and a parity track) are written simultaneously
across the width of the tape.
1-1

1-2

INTRODUCTION

The TSZ05 Tape Drive is self-loading. Tape is automatically threaded,
positioned at beginning-of-tape (BOT), and properly tensioned.

1.2

SPECIFICATIONS

Refer to the following sections for the TSZ05 electrical, mechanical,
environmental, and performance specifications.

1.2.1

Electrical Specifications

The TSZ05 Tape Drive complies with Underwriters’ Laboratory (UL) for
power cord grounded equipment, VDE/TUV (German standards and
testing organizations), and Canadian Standards Association (CSA)
requirements. Table 1-1 provides the electrical specifications for the

TSZ05 Tape Drive.

Table 1-1

Electrical Specifications

Voltage

Current

Frequency

Power

Heat Dissipation

85 to 132
Vac

1.67 A at
120V

49 to 63 Hz

220 W
maximum

750 BTUs per hour
maximum

187 to
264 Vac

83 A at
220V

1.2.2 Mechanical Specifications
Table 1-2 provides the mechanical specifications for the TSZ05 Tape
Drive.

Table 1-2

Mechanical Specifications

Height

Width

Depth

Weight

26.9 cm (10.59 in.)

50.5 cm (19.88 in.)

68.4 cm (26.94 in.)

45 kg (99 Ibs)

INTRODUCTION

1.2.3 Environmental Specifications

Acoustic Noise Emission

55 dBa maximum measured from one meter
Operating Temperature
15°C to 32°C (59°F to 90°F) with tape

Relative Humidity
20% to 80% noncondensing (with tape)

Operating Altitude
3 kilometers (10,000 feet) maximum

1.2.4 Performance Specifications

Data Capacity
46 megabytes (2400-foot tape)

Head-to-Tape Data Transfer Rate

160 kilobytes per second
Interface Burst Rate

1.5 megabytes per second maximum, asynchronous

1-3

1-4

INTRODUCTION

Recording Speeds

25 and 10071 inches per second at 1600 bits per inch
Rewind Speed
S

biG

175 inches per second average
Operating Times

SRS,

Operation

25 ips

100 ipst

Data Access

40 ms

260 ms

Reposition

120 ms

780 ms

Write Reinstruct

10.0 to 11.0 ms

2.0 to 3.5 ms

Read Forward Reinstruct

16.0 to 18.0 ms

3.0t0 4.0 ms

tActual performance is dependent on system capability. The TSZ05 will stream up to 100
inches per second for data block sizes not exceeding 32 Kbytes.
B

1.3

SITE PREPARATION

Computer systems and peripherals in office areas are affected by static
discharge, temperature changes, and humidity. These conditions may
cause poor operation and may affect the dependability of the equipment.
Good site planning can decrease these effects and make the installation
process easier.
A,

1.3.1

Preinstallation Considerations

Space

Allow enough space so that the TSZ05 cabinet can be moved forward for
servicing and to ensure that air circulation provided to the cabinet is not
obstructed. Place the tape drive where it can be accessed easily. Run the
power cord and data cable in areas where no one will trip on them.

T Actual performance is dependent on system capability. The TSZ05 will stream
up to 100 inches per second for data block sizes not exceeding 32 Kbytes.

INTRODUCTION

1-5

Power
Primary power is provided and installed by the customer. This circuit
must meet all national and local codes that apply to it. If power
disturbances cannot be prevented, more power conditioning equipment
may be required and this is the customer’s responsibility.

Since the TSZ05 requires 3.6 A maximum, it may be plugged into the
same circuit as the workstation as long as the total current does not
exceed the circuit capability. This circuit must be stable without any
electrical noise, and provide a good system ground.
CAUTION
Do not connect any equipment such as air conditioners, office
copiers, or coffee pots to this circuit.

1.3.2 Environment
The system that controls the environment should be capable of
maintaining the recommended temperature and humidity ranges yearround (see Section 1.2.3). This system should filter the air to remove dust
and other particles, as well as provide an even distribution of the air to
prevent hot areas in the room where the TSZ05 Tape Drive is installed.
Keep the tape drive away from heaters and out of direct sunlight.

1.3.3 Static Electricity
Static discharge is a common problem for any electronic device and may
cause lost data, equipment downtime, and other problems. The most
common source of static electricity is the movement of people in contact
with carpets and clothing. Low humidity allows a large amount of static
charge to build up. To minimize problems with static electricity:

Maintain more than 40% relative humidity

Place the TSZ05 away from the heavy traffic areas

Do énot use carpets (if possible). If a carpet is necessary, choose a

good antistatic carpet. If carpets are in place, antistatic mats placed
around the equipment may help to decrease the problem

ARG

[

]

2
OPERATION

2.1

INTRODUCTION

This chapter discusses the operational considerations for the TSZ05 Tape
Drive. The topics discussed are:
e

Front panel

Loading tape

TUnloading tape

2.2

FRONT PANEL

The TSZ05 Tape Drive front panel (Figure 2—1) contains switches and
indicators that allow the operator to perform various functions or to
determine the status of the tape drive. The switches and indicators are
described in Table 2-1.
NOTE

If a problem occurs, refer to Chapter 3 for error codes and
corrective actions.

2—1

2—-2

OPERATION

AR,

PRESS DOWN

_FRONT PANEL
DOOR

fR 1516 fifimfimfiwé B
——

Load

Unioad

On-Line

Rewind

Write

Enter

Test

MKV89-0502
[

Figure 2-1

TSZ05 Front Panel

]

OPERATION

Table 2-1

2-3

Switches and Indicators
Function
This switch, when pressed, causes the tape to load to beginning-oftape (BOT) when the tape isinserted, or to rewind to BOT if the
tape is already loaded.

Load Rewind
Indicator

This indicator flashes while the tape is loading or rewinding. It
then remains ON when either operation is complete to indicate that
the tape is positioned with the BOT tab at the BOT photosensor.

Unload Switch

This switch, when pressed, causes the tape to unload. When the
tape is unloaded, the access door unlocks allowing access to the tape
reel.

Unload Indicator

This indicator flashes while the tape is unloading and then remains
ON to indicate that tape is not loaded.

On-Line Switch

This switch places the tape drive either on-line or off-line. When
the On-Line switch is pressed the first time, the tape drive is placed
on-line. When pressed the second time, the tape drive is placed
off-line.

On-Line Indicator

This indicator, when ON, indicates that the tape drive is on-line
(capable of communicating with the host controller), and all front
panel switches except the On-Line switch are disabled.

This switch causes the tape drive to enter or exit the diagnostic
mode. The tape drive must be off-line for this switch to function.
The first time this switchis pmmd the tape drive enters the
diagnostic mode. If the switchis pressed while the tape driveis in
the diagnostic mode, the tape drive mts the diagnostic mode.
Write Test
Indicator

Enter Switch

Enter Indicator

This indicator, when ON, shows that a write-enable ring is installed
in the loaded tape reel.

This switch in conjunction with the Load Rewind switch allows

the operator to bypass the autothreading sequence for manual
threading of tapes with damaged leaders.

This indicator in conjunction with the other indicators is used to
indicate tape drive errors to the operator.

2—4

OPERATION
[

2.3

LOADING TAPE

Tape can be loaded in the TSZ05 Tape Drive either automatically or
manually.

2.3.1

Automatic Tape Loading
AR

To automatically load tape, perform the following steps.
1.

Plug the power cord into the rear of the TSZ05 (Figure 2—2).

MKVES-0503

Figure 2-2

Power Cord Attachment

Plug the power cord into an appropriate wall outlet.

Place the Power switch in the ON ( | ) position.

Observe that the Power switch lamp illuminates indicating that there
is power to the drive.
Ly

OPERATION

2-5

Ensure that the tape leader is not damaged and that the end
is crimped. If the leader is damaged or the tape is new, use a
cutting/crimping tool (P/N: 47-00038-00) to crimp the end of the
tape (Figure 2-3).

CRIMPING TOOL

w
\

FINISHED CUT

TAPE REEL

MKVB9-0504

Figure 2-3

Crimping Tool

Ensure that the tape is completely wound onto the reel.

If the tape is going to be written on, locate the groove on the bottom
of the reel (Figure 2—4).

Press the write-enable ring into the groove. |

2-6

OPERATION

WRITE-ENABLE
RING

GROOVE
Oy

\BOTTOM

MKV89-0505

Figure 2—4

Installing a Write-Enable Ring

Open the front panel door of the tape drive by pressing down gently
on the top of the door (Figure 2-5).

10. Place the tape reel on the supply hub with the write-enable ring side
of the reel down. The reel must lie evenly on the hub.
11. Close the front door.
12. Press the Load Rewind switch. The Load Rewind indicator lamp
flashes during the load cycle (approximately 30 seconds).

13. When the tape is loaded, the Load Rewind indicator lamp remains ON
(stops flashing) and the Write Test indicator lights if a write-enable
ring 1s installed.

14. Press the On-Line switch to connect the tape drive to the controller.

OPERATION

"FRONT PANEL
DOOR

NOTE:

INSERT TAPE WITH WRITE-ENABLE RING.
MKV89-0506

Figure 2-5

Loading a Tape Reel

2-7

2-8

OPERATION

2.3.2 Manual Tape Loading
If the tape drive does not automatically load a reel of tape, the following
manual load procedure can be used.
”

CAUTION
Switching off the tape drive while the system is operating could
cause data on the SCSI bus to be corrupted. Halt the system
before performing the manual tape loading procedure. Raising
the inner cover operates a safety interlock that disconnects the
power.

Ensure that none of the tape drive indicators are flashing.
2.

Place the Power switch to the OFF (O) position.

Open the front panel door of the tape drive by pressing down gently
on the top of the door.

Open the outer enclosure lid by pressing down on both front corners
of the lid until the latch unlocks (a distinct click should be heard).

Raise the outer lid until the yellow safety latch on the right rear
corner locks into place.

Grasp the inner cover on both sides, raise the inner cover, and place
the cover retaining arm in its hole (Figure 2-6).

Place the tape reel on the supply hub with the write-enable ring side
of the reel down. The reel must lie evenly on the hub.
o

Press and hold the manual release switch in (Figure 2-6) and rotate
the supply hub clockwise until the tape reel locks in place. This is
indicated by the three reel hub fingers raising against the reel hub
and the reel stopping. Additional pressure is required to move the
supply hub the last 1/8 turn. A distinct click is felt as it locks into
place.
|

)

Release the manual release switch.
oo

OPERATION

2-9

OUTER ENCLOSURE
LID

INNER TOP
COVER

TOP COVER

'RETAINING ARM

RETAINING

- /AN

ENCLOSURE LID

LATCH

MANUAL RELEASE
SWITCH

ARM HOLD

FRONT PANEL

F
MKVBS-0507

Figure 2-6

Accessing the Tape Drive for Manual Loading

2-10

OPERATION

10. Thread the tape along the path shown in Figure 2-7.
11. Carefully hold the spring-loaded tachometer arm away from the
take-up hub.
|

TACHOMETER
ARM

TAKE-UP

HUB

_SUPPLY HuB

MKV89-0508

Figure 2-7

Tape Path

12. Wrap the tape clockwise around the take-up hub until the end of the
tape is held by the next tape layer.
SRy,

13. Turn the take-up hub clockwise five revolutions and gently place the
tachometer arm against the hub.
i,

OPERATION

2-11

14. Check that the tape is seated correctly on the tape guides and the

read/write head.

15. Lift the inner cover and move the cover retaining arm to the rear to
close the cover.

Lower the inner cover and press down on the front corners to latch.
17. Lift the outer lid and lift the yellow safety latch on the right rear to

close the lid.

18. Lower the outer lid and press down on the front corners to latch.
19. Close the front panel door by lifting it to the up position.
20. Place the power switch to the ON ( | ) position.
21. Press and hold the Enter switch.

. While holding the Enter switch, press the Load Rewind switch.
23. Release both switches. This causes the tape to load to beginning-oftape (BOT).
|

. The Load Rewind indicator lamp flashes while the tape is loading
(approximately 30 seconds) and then remains ON (stops flashing) to
indicate that the tape is loaded.

2-12

OPERATION

2.4

UNLOADING TAPE

Tape is usually unloaded automatically, but there may be cases where
manual unloading is required. This section includes both procedures.
RN

2.4.1

Automatic Tape Unloading

To automatically unload tape, perform the following steps.
1.

Ensure that the On-Line indicator is OFF and that the front panel

door is closed. If the On-Line indicator is not OFF, press the
On-Line switch to place the tape drive off-line.
2.

Press the Unload switch. The Unload indicator flashes while the tape
is unloading.

When the Unload indicator remains ON, and the front panel door is
unlocked, open the front panel door and remove the tape reel.

NOTE
If the tape reel cannot be removed, it may be necessary to use
the manual tape unloading procedure.

Aoy

OPERATION

2-13

2.4.2 Manual Tape Unloading

If the tape drive does not automatically unload a tape reel, it may be
necessary to perform the following steps.

CAUTION

Switching off the tape drive while the system is operating could
cause data on the SCSI bus to be corrupted. Halt the system
before performing the manual tape unloading procedure. Raising
the inner cover operates a safety interlock that disconnects the
power.

Place the Power switch to the OFF (O) position.

Open the front panel door of the tape drive by pressing down gently

on the top of the door.

Open the outer enclosure lid by pressing down on both front corners
of the lid until the latch unlocks (a distinct click should be heard).

Raise the outer lid until the yellow safety latch on the right rear

Grasp the inner cover on both sides, raise the inner cover, and place

Rotate the supply reel counterclockwise to rewind all the tape onto
the supply reel (the tape will be very taut due to take-up reel loading).

corner locks into place.

the cover retaining arm in its hole (Figure 2-8).

7. Press the manual release switch (Figure 2-8) while rotating the

supply hub counterclockwise until the three fingers snap back and the

tape reel rotates freely.

Remove the supply reel from the tape drive.

Llf:’t the inner cover and move the cover retaining arm to the rear to
close the cover.

10. Lower the inner cover and press down on the front corners to latch.
11. Lift the outer lid and lift the yellow safety latch on the right rear to
close the lid.

2-14

OPERATION

12. Lower the outer lid and press down on the front corners to latch.

13. Close the front panel door by lifting it to the up position.

OUTER ENCLOSURE

LID
R

AR,

INNER TOP

COVER

TOP COVER
RETAINING ARM

(

—

/ /)

ENCLOSURE
LID

LATCH

MANUAL RELEASE

SWITCH

RETAINING /

ARM HOLD

FRONT PANEL

MKVE9-0507

Figure 2-8

Accessing the Tape Drive for Manual Unloading

3.1
e

INTRODUCTION

This chapter discusses basic troubleshooting and customer maintenance

for the TSZ05 Tape Drive.

Basic tréubleflhwting consists of performing the corrective action

indicated by error codes reported either by LEDs on the front panel of
the tape drive or by messages on the host system.

3.2.1 Front Panel Error Reporting
The tape drive reports errors using the LED indicators on the front panel
(Figure 3-1).

3—-2

TROUBLESHOOTING AND MAINTENANCE
A

mewen 75205 () ()
Load

Unload

)()

)
On-Line

Rewind

Write

Enter

Test

m'
i

Power

MKVB83-0509

Figure 3-1

Front Panel LEDs

These five LEDs indicate errors by blinking after the load cycle is
completed, displaying codes (LED patterns) that identify the type of error
that occurred. Figure 3—2 shows how the first error code in Table 3—1
would appear on the front panel. Note that a 1 = lamp illuminated and a
0 = lamp off.

2086020 T'SZ05 @ r@ é ) [!J
Load
Rewlnd

Unload

On-Line

Wrelte
Test

SRR

Enter

Power
MKV89-0510

Figure 3—2

Example of 01100 Error Code

TROUBLESHOOTING AND MAINTENANCE

3-3

Table 3-1 shows error codes and the corresponding corrective action for

Customer Services technician to correct.

errors that a user can correct. All other error codes require a Digital
Error Codes/Corrective Action
Corrective Action
LED Pattewn

Table 3-1

Install a write-enable ring if you intend to write to this tape.

01100

11101

Check that the tape reel is seated correctly on the supply hub.
Place a reel of tape on the supply hub before pressing Load

11011

Close the front panel door.

10111

Place a reel of tape (write-enable ring side down) on the supply

00110

01111

Rewind.

hub.

Check the beginning-of-tape (BOT) marker. The tape leader

must be a minimum of 1.8 m (6 ft) and a maximum of 10.7 m
(35 ft)

Load failure: Recrimp the tape leader and try again. Load the

11111

If the error code is not listed in the above table, there are no user
corrective actions that can be taken. Notify Digital Customer Services.

tape manually if necessary.

3—4

TROUBLESHOOTING AND MAINTENANCE

3.2.2 SCSI Error Reporting
The SCSI generates error data that can be accessed by a host system
via the "request sense”" command. The error data is presented as Sense
keys and Additional Sense Codes. The Sense keys and their meanings
are listed in Table 3-2 and the Additional Sense Codes are listed in

[

Table 3-3.
Table 3-2

Sense Keys

Hex

Code

Sense Key

Meaning

No Sense

No Sense key data to be reported.

Recovered

Command completed successfully with some recovery

Error

action.

Not Ready

The tape drive cannot be accessed.

Tape Error

Command terminated with an unrecovered error
probably due to the tape.

Hardware

The tape drive detected a nonrecoverable hardware

Error

fault.

Illegal
Request

Illegal parameter.

Unit
Attention

The tape may have been changed or the tape drive
has been reset.

Data Protect

A write was attempted on a tape without a write-

enable ring installed.

Blank Check

A read past end-of-data (EOD) was attempted.

Aborted
Command

The tape drive aborted a command.

Volume
Overflow

The tape drive reached end-of-tape (EOT) and
unwritten data remains in the buffer.

SRR

TROUBLESHOOTING AND MAINTENANCE

Table 3—-3

Additional Sense Codes

Hex Code

Additional Sense Code

No Additional Sense information

Data buffer parity error

Power-up failure

Functional timeout

Tape position error

Error occurred before command completion

Data buffer not empty

Illegal command

Fixed mode bit incorrectly set

Data transfer error: host to controller

Data transfer error: controller to host

Verify command with byte compare not supported

Space to end-of-data (EOD) not supported

Command sequence error

Unit select error

Variable block length greater than 64K

Unable to obtain buffer

Command parameter error

Status error from target

Controller detected retries: buffer parity

Controller detected retries: SCSI parity

Controller detected tape retries

3-6

TROUBLESHOOTING AND MAINTENANCE

3.3

USER MAINTENANCE

The only user maintenance for the TSZ05 Tape Drive is the cleaning of
the tape read/write head, tape path, sensors, and cleaning or replacement
of the air filter.
The following are needed for maintenence on the TSZ05 Tape Drive:
®

Tape Drive Cleaning Kit, P/N: TCUO1 (for 20 hour, 40 hour, and 6
month service).

Air Filter, P/N: 29-25065-00 (6 month service, if desired).

Maintenence parts may be ordered from Digital Equipment Corporation.

Contact your local Digital representative for ordering information.
NOTE

All components of the tape path should be cleaned after every
40 hours of operation or once per week, whichever occurs first.
The read/write head should be cleaned after every 20 hours of
operation. Only Freon TFTM should be used as a cleaning agent,
and it should be applied with a lint-free swab or wipe.

CAUTION
Do not apply a cleaning agent directly to the item to be cleaned,
even if the instructions on the cleaning agent state to do so.
Always apply the cleaner to a lint-free swab or wipe first.
Cleaning agents can dissolve the lubricants in precision bearings.

Maintenance Matrix

Service Assembly
Read/Write Head

40 Hour

6 Month

]

Tape Cleaner

20 Hour

Table 3—4

Sensors

Air Filter

PGPS PO

Roller Guides

ol o

Take-up Hub

Tachometer Roller

TM Freon TF is a trademark of E.I. DuPont de Nemours and Company, Inc.

TROUBLESHOOTING AND MAINTENANCE

3.3.1

3—7

20 Hour Maintenance

After every 20 hours of operation, clean the read/write head as follows.
CAUTION

Switching off the tape drive while the system is operating could
cause data on the SCSI bus to be corrupted. Halt the system

before performing the maintenance procedure. Raisin g the cover

operates a safety interlock that disconnects the powm'
1.

Place the Power switch to the OFF (O) position.

Open the outer enclosure lid by pressing down on both front corners
of the lid until the latch unlocks (a distinct click should be heard).

Raise the outer lid until the yellow safety latch on the right rear

corner locks into place.

Grasp theinner cover on both sides, raise the inner cover, and place
the cover retainingarm in its hole (Figure 3-3).

3-8

TROUBLESHOOTING AND MAINTENANCE

OUTER ENCLOSURE

LID

—n

INNER TOP
COVER

TOP COVER

(

RETAINING ARM

/ '/

‘

ENCLOSURE LID

/ LATCH

MANUAL RELEASE

SWITCH

An———

RETAINING /

ARM HOLD

FRONT PANEL

[“'"' —
MKVB9-0507

Figure 3—-3

Gaining Access to the Tape Path (20 Hour Maintenance)

TROUBLESHOOTING AND MAINTENANCE

3-9

5. Apply Freon TF to a lint-free swab or wipe and clean the tape contact
surface of the read/write head (Figure 3—4).

- —

6. Wipe ény residue from the head with the dry lint-free wipes provided
in the kit.

READ/WRITE

MEVES-0511

Figure 3-4

Cleaning the Read/Write Head (20 Hour Maintenance)

7. Close the inner cover by releasing the cover retaining arm and
~

lowering the cover.

8. Press down on the front corners until the inner cover snaps closed.
9.

Release the latch and lower the outer lid of the enclosure.

10. Press gently on the front of the lid to latch it in place.

3-10

TROUBLESHOOTING AND MAINTENANCE

3.3.2 40 Hour Maintenance
After every 40 hours of operation or once per week, whichever occurs
first,
clean the read/write head, tape path, and BOT/EOT sensors.
oI

CAUTION
Switching off the tape drive while the system is operating could
cause data on the SCSI bus to be corrupted. Halt the system

before performing the maintenance procedure. Raising the cover
operates a safety interlock that disconnects the power.

Cleaning the Read/Write Head
1.

Place the Power switch to the OFF (O) position.

Open the outer enclosure lid by pressing down on both front corners
of the lid until the latch unlocks (a distinct click should be heard).

Raise the outer lid until the yellow safety latch on the right rear
corner locks into place.

Grasp the inner cover on both sides, raise the inner cover, and place
the cover retaining arm in its hole (Figure 3-5).

TROUBLESHOOTING AND MAINTENANCE

3-11

INNER TOP
COVER

TOP COVER

~—

[

RETAINING ARM

RETAINING

‘
ARM‘ HOLD

ENCLOSURE LID

CATCH

MANUAL RELEASE

SWITCH

&%lo At

FRONT F‘ANEL>< r =
|

e
MKWVES-0507

Figure 3-5

Gaining Access to the Tape Path (40 Hour Maintenance)

3-12

TROUBLESHOOTING AND MAINTENANCE

Apply Freon TF to a lint-free swab or wipe and clean
the tape contact
surface of the read/write head (Figure 3-6).

Wipe any residue from the head with the dry lint-free wipes
provided
in the kit.

READ/WRITE

HEAD

MKVE3-0511

Flgure 3-6

Cleaning the Read/Write Head (40 Hour Maintenance)

TROUBLESHOOTING AND MAINTENANCE

3-13

Cleaning the Tape Path

Apply Freon TF to a lint-free swab or wipe and clean the following
components of the tape path:
a.

Tape cleaner (Figure 3-7)

Tachometer roller (Figure 3-8)

Take-up hub (Figure 3-9)

Roller guides (Figure 3—10)

2. Wipe any residue from the components with the dry lint-free wipes
provided in the kit.

TAPE

CLEANER

MKVES-0512

Figure 3—7

Cleaning the Tape Cleaner

3—-14

TROUBLESHOOTING AND MAINTENANCE

TACHOMETER
ROLLER

MKv89-0513

Figure 3-8

Cleaning the Tachometer Roller

TROUBLESHOOTING AND MAINTENANCE

3-15

MKVE9-0514

Figure 3-9

Cleaning the Take-up Hub

Note that it will be necessary to hold the tachometer arm away from the
hub during cleaning.

3—-16

TROUBLESHOOTING AND MAINTENANCE

ROLLER GUIDES

ROLLER

GUIDES

MKv89-0515

Figure 3-10

Cleaning the Roller Guides

TROUBLESHOOTING AND MAINTENANCE

3-17

Cleaning the Sensors

CAUTION

When cleaning the sensors, be as gentle as possible. The
alignment of the LEDs is critical.

Using a dry cotton swab, gently wipe any dust off each sensor
transmitter and receiver lens (Figure 3—11).

TAPE-IN-PATH

SENSOR

EOT/BOT

SENSORS

MKVBS-0516

Figure 3—11

Cleaning the Sensors

Close the inner cover by releasing the cover retaining arm and

lowering the cover.

3. Press down on the front corners until the inner cover snaps closed.

Release the latch and lower the outer lid of the enclosure.
5.

Press gently on the front of the lid to latch it in place.

3—-18

TROUBLESHOOTING AND MAINTENANCE

3.3.3 6 Month Maintenance
Every six months, in addition to the 40 hour maintenance, clean or
replace the air filter as follows. The filter is located in the lower left front
of the enclosure (Figure 3-12).

—

e
[

FILTER

MEVBS-0517

Figure 3-12

Removing the Air Filter

Remove the filter by pulling the bottom of the filter forward to free
the two fingers at the bottom (Figure 3—-12).

Pull the filter down and out.

Note that the direction of airflow is from the outside to the inside of
the cabinet.
4.

Vacuum or blow compressed air through the filter in the opposite
direction of the airflow.

TROUBLESHOOTING AND MAINTENANCE

3-19

5. Reinstall the filter or replace it with a new unit (P/N: 29-25065-00) by
sliding it up and under the top hold-down fingers (the plastic frame to
the outside). See Figure 3—12 for position.

Snap the two bottom fingers under the opening.

ORI,

[