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EK-LA180-OP-003

July 1977

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Document:	LA180 DECprinter I User's Manual
Order Number:	EK-LA180-OP
Revision:	003
Pages:	76
Original Filename:

OCR Text

1st Edition, December 1975
2nd Printing (Rev), July 1976

3rd Printing (Rev), February 1977

Copyright © 1975, 1976, 1977 by Digital Equipment Corporaton
The material in this manual is for informational
purposes and is subject to change without notice.
Digital Equipment Corporation assumes no respon-

sibility for any errors which may appear in this
manual.

Printed in U.S.A.

For additional copies of this document, order No. EK-LA180-OP-003

The following are trademarks of Digital Equipment
Corporation, Maynard, Massachusetts:
DEC

DECtape

DECCOMM

DECUS

PDP

RSTS

DECsystem-10
DECSYSTEM-20

DIGITAL
MASSBUS

TYPESET-8
TYPESET-11
UNIBUS

9/77-14

LA18O DeCprinter |

TABLE OF CONTENTS

Page

SECTION 1

OPERATOR'’S GUIDE

LA180 ALARM SIGNALS

. . .

LA180 OPERATOR CONTROLS
SELF-TESTING THE LAT80

USING THE LAT80
OPTIONS

SECTION 2

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. . . .

. . .

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LOADING PAPER AND RIBBON CHANGING

LOADING PAPER

. . . o

LOADING NEW FORMS
RELOADING PAPER

e e

. . . . .
. .

RIBBON INSTALLATION

SECTION 3

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. . . . . . .

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INSTALLATION AND CONFIGURATION CHECKOUT GUIDE

GENERAL INSTALLATION INFORMATION

. . . . o

UNPACKING AND INSPECTION

PACKING PROCEDURES

. . . .

. . . . . .

CHECKOUT AND ACCEPTANCE PROCEDURES

50 Hz/60 Hz CONVERSION
INTERFACE DESCRIPTIONS

INTERFACE SPECIFICATIONS

LAT80 JUMPER SELECTIONS

. . . . . o

JUMPER FUNCTIONS

. . . .

. . . . . .

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TABLE OF CONTENTS (Continued)

Page

SECTION 4

PROGRAMMER'S GUIDE

RECEIVING CHARACTERS AND COMMANDS

SECTION 5

. .

- TROUBLESHOOTING GUIDE

SECTION 6

LAT80 SPECIFICATIONS

SECTION 7

LAXX-NW, NX/LA180 BUFFERED SERIAL INTERFACE

GENERAL INFORMATION

. .

. . .

INSTALLATION AND CONFIGURATION
PARTS LIST

SECTION 8
INTRODUCTION

INSTALLATION

. .

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LAXX-KJ COMPRESSED FONT OPTION KIT
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PREFACE

The LA180 is a simple, dependable addition to your company’s processing system. It was designed to maintain
optimum performance for many years while keeping maintenance at a minimum. Built-in safeguards, such as an
automatic protection system in the event of a head jam, protect the machine even when an operator is not present.

This user’s manual is a guide to the simple procedures required to operate your LA180. However, to ensure crisp
copies and maximum equipment life, the user must adhere to the following:

Perform the impression adjustment (when required) as described in this manual.

Replace the ribbon (when required) only with DIGITAL-recommended ribbons. Ribbons
must be made of nylon fabric with nonabrasive inks. Carbon-based inks are extremely
abrasive and should not be used.

OPERATOR CONTROLS

PAPER

SELF TEST

ADVANCE
KNOB

]
Y

SET VFU
LENGTH OF FORM

RIBBON SPOOLS
»,

O it B

HESD OF

FORM

LIBE

CARRIAGE

OPERATOR CONTROLS

fED\‘;léf‘TMENT

HEAD OF FORM

ON LINE/OFF LINE

POWER

OFF

LINE

TRACTOR

Qfif)l:afl
15953

SECTION 1

OPERATOR’S GUIDE

LA180 ALARM SIGNALS
The LA180 produces three different audible alarm signals. The operator should become familiar with these alarms in
order to determine the correct response.

Continuous Tone — Indicates a carriage jam or failure. To turn the alarm off, set the POWER switch to
OFF. Turning the POWER switch OFF, then ON, resets the alarm.

Repetitive Beeping — Indicates an out of paper condition or a series of bell codes. To turn the alarm off,
set the ON LINE/OFF LINE switch to OFF LINE.

Single Beep — Indicates a bell code.

LA180 OPERATOR CONTROLS

Hebr

LINE -

7595-9

HEAD OF FORM Pushbutton

ON LINE/OFF LINE Switch

The HEAD OF FORM pushbutton, when pressed, causes

The ON LINE/OFF LINE switch enables the operator to

the line printer paper to advance to the top of the form,

place the

system. When off-line, the HEAD OF FORM switch is

determined

the

SET VFU and

LENGTH

FORM switches. The HEAD OF FORM pushbutton is

LA180 off-line or on-line with an operating

activated.

only active off-line.

POWER ON/OFF Switch
The POWER switch controls power application to the
LA180.

LENGTH OF FORM

7595-10

SELF TEST Switch

LENGTH OF FORM Switch

In the on-line mode, setting the SELF TEST switch to

The LENGTH OF FORM switch is set to the number

corresponding to the form length in inches. To set the

causes

the

LA180

out all

the

ASCII

form length to 11 inches, set the switch to 11. (The new

characters.

switch setting is delayed until one form passes through
NOTE

When performing a self-test, 14-7/8-inch (132-column)
paper must be used.

SET VFU Pushbutton
The LENGTH OF FORM switch enables the LA180 to
determine the length of the forms; however, the LA180

does not know where the form begins. Pressing SET
VFU establishes the starting point on the form.

the LA180 at the old switch setting. Pressing SET VFU

eliminates the 1-form delay.)

Paper Advance Knob
The Paper Advance knob, when turned, advances the

paper one step at a time. Pressing in and turning the
Paper Advance
freely

knob enables the paper to be rolled

in either direction, and allows precise vertical

forms positioning.
PUSH IN HERE

AND TURN TO
ADJUST PAPER

VERTICALLY

PAPER
ADVANCE
KNOB

7505-4

Tractor Adjust Knobs
The

Tractor

Adjust

knobs

allow

fine

horizontal

adjustment of forms.

TRACTOR
ADJUST

KNOB

7595-7

Carriage Adjustment Lever

The Carriage Adjustment lever controls the print head
gap for single or multipart forms.
NOTE

Refer

the

Impression

Adjustment

procedure

Section 2 when setting the Carriage Adjustment lever.
CARRIAGE
ADJUSTMENT

LEVER

7595-11

SELF-TESTING THE LA180
The following self-test procedure provides a simple and accurate method of testing the LA180.
1.

Install 14-7/8-inch (132-column) paper.
Set the ON LINE/OFF LINE switch to OFF LINE.
Set the POWER switch to ON.

Set the SELF TEST switch to ON.

Set the ON LINE/OFF LINE switch to ON LINE. A sample self-test printout is shown in Figure 1.
TERMINATING THE SELF-TEST PROCEDURE

NOTE
The following steps must be performed in the order indicated
or the LA180 may be inhibited from receiving data.

Set the ON LINE/OFF LINE switch to OFF LINE.

Set the SELF TEST switch to OFF.
Set the ON LINE/OFF LINE switch to ON LINE to resume normal operation.

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Figure 1

Self-Test Printout

SETTING THE TOP OF FORM
1.

Set the POWER switch to ON.

Set the ON

LINE/OFF

LINE switch to OFF

SET VFU

LENGTH OF FORM

g ! g

LINE.

Set the LENGTH OF FORM switch to the number
corresponding to the form length in inches.

7595-10

Turn the Paper Advance knob until the bottom of
the first line to be typed is aligned with the top of
the Top of Form Bar.
Press the SET VFU pushbutton.

Press the HEAD OF FORM pushbutton several

times to ensure that the forms advance to the
correct position.

NOTE

If the LA180 is turned off and on, the top of form

starting point must be reestablished using the SET VFU
pushbutton.

TOP OF FORM

BAR

USING THE LA180
Using the LA180 requires almost no operator intervention. These few steps are all that may be required to place
your LA180 on-line.
1.

Load the paper.

Set the ON LINE/OFF LINE switch to OFF LINE.

Set the SELF TEST switch to OFF.

Set the POWER switch to ON.

Set for top of form, if applicable.

Setthe ON LINE/OFF LINE switch to ON LINE.

The LA180 is now on-line and fully operational.

OPTIONS
The basic LA180 DECprinter | can be expanded to provide the user with a number of func‘uonal op’uons for receiving
and handling data. The functional options are describedin the following table.

LA180 Options

Option

Name

Description

LAXX-KJ

Compressed Font Option

The compressed font option is a mechanical option.
It provides the LA180 with the ability to print 132
columns on a 9-in. form with one strippable edge, or

on a 9-1/2 in. form with two strippable edges.
LAXX-LD

Paper Basket Assembly

Located on the back of the LA180, the paper basket

will hold up to half a box of 14-7/8-in. wide paper.
LAXX-NW

Serial Interface

Standard LA180 serial interface with 256 character
buffer, EIA RS-232C signaling.

LAXX-MW

LAXX-NX

Kit of five LAXX-NWs.

Serial Interface

Standard LA180 serial interface with 20 mA current
loop signaling.

LAXX-MX
LAXX-NY

Kit of five LAXX-NXs.
Serial Interface

Standard LA180 serial interface with EBCDIC to

ASCII converter.
LAXX-MY

Kit of five LAXX-NYs.

SECTION 2
LOADING PAPER AND RIBBON CHANGING

LOADING PAPER
The LA180 is a highly flexible printer which can accept multipart forms, with widths from 3 to 14-7/8 inches. When
loading new forms, it is necessary to perform two adjustments:

Paper Positioning

Impression Adjustment

In addition, there is a horizontal positioning and vertical positioning adjustment. The horizontal positioning adjustment
allows the paper to be slightly shifted left or right. This procedure is especially useful when typing on preprinted forms

with defined horizontal zones. The vertical positioning adjustment enables the paper to be adjusted vertically. Once
these

adjustments

have

been

performed, reloading paper becomes

quick and simple,

requiring a

minimum

interruption.

LOADING NEW FORMS
PAPER POSITIONING PROCEDURE
1.

Set the POWER switch to OFF.

Lift the cover.

Place the tractor-feed paper on the floor between

the legs of the

LA180. (The term tractor-feed

refers to the holes on either side of the paper.)

NOTE
Ensure that the leading edge of the forms is directly
below and parallel to the feed slot.

7666-14

Open the left tractor cover so that the tractor pins are
exposed.

Move

the

Carriage

Adjustment

lever to

the

highest

number (toward operator).

CARRIAGE
ADJUSTMENT
LEVER

7595-11

Feed the paper through the load channel under the
terminal and align the left paper margin holes over

the left tractor pins.

Close the left tractor cover.

7666-27

Loosen the Tractor Adjustment knob on the right
tractor about 1/2 turn.

Open the right tractor cover and slide the tractor
to a position where the holes on the right paper

margin align directly over the tractor pins.

Close the tractor cover.
NOTE

Ensure that the paper does not pull against the tractor
pins or bow in the middle.
4.

7666-44

Tighten the tractor adjustment.

Set the LENGTH OF FORM switch to the number
corresponding to the form length and proceed to

the impression adjustment.

IMPRESSION ADJUSTMENT
NOTE

The Carriage Adjustment lever is normally set forward

(to notch number 1) for single thickness paper. The
following

procedure

applicable

only to multipart

formes.

Set the POWER switch to OFF.

Set the Carriage Adjustment lever to the number
corresponding to the number of parts in the form.

Turn the Paper Advance knob counterclockwise
while moving the Carriage Adjustment lever forward one notch at a time until the paper smudges;
then move the lever back one notch at a time until
the paper no longer smudges.

Set

the

POWER

switch

and

resume

operation.

NOTE
If the impression is unsatisfactory due to a worn ribbon,

Sy
g

iy o Oy v’;f;z ~

worn

Gl~d el

ribbon is indicated when the first copy in a multipart

perform

the

ribbon

installation

procedure.

copy is poor but the remaining copies are good.

Ao o

ST r\z;;\w
\\L R B Y
\L‘\

SRS

7666-25

HORIZONTAL POSITIONING ADJUSTMENT
The horizontal positioning adjustment enables the paper

to be shifted left or right (1/2 in. max.). Shifting the
paper

provides

a simple

means

aligning the type

within the appropriate columns on the paper.

1.
2.

Set the POWER switch to OFF.
Lift the cover and loosen both Tractor Adjustment

knobs about 1/2 turn.
\

TRACTOR ADJUST KNOBS

Move the tractors the desired amount (1/2 in.

7666-48

max.) to have characters type in the appropriate
columns.

Tighten the Tractor Adjustment knobs.

NOTE
Ensure that the paper does not pull against the tractor
pins or bow in the middle.

FINE VERTICAL POSITIONING

For fine vertical positioning, press in and turn the Paper
Advance knob.

NOTE

PUSH IN HERE

When rolling paper backwards, ensure that paper per-

AND TURN TO

forations do not snag on the print head.

VERTICALLY

ADJUST PAPER

PAPER
ADVANCE
KNOB

7595-4

RELOADING PAPER
1.

Set the POWER switch to OFF.

Lift the cover.

Place the tractor-feed paper on the floor between
the legs of the LA180.

Open both tractor covers so that the tractor pins
are exposed.

NOTE
Ensure that the leading edge of the forms is directly

below and parallel to the feed slot.

Feed the paper through the load channel under the
terminal and align the paper holes over the tractor
pins.

Close the tractor covers.

RIBBON INSTALLATION
The printer ribbon should last for 8 to 12 hours of actual printing at 180 characters/second (about 4 million

characters). After 8 hours, or when the print density becomes too light, remove both ribbon spools from their drive
spindles and turn the whole assembly over so that the previous lower edge of the ribbon is now on top. After

rethreading the ribbon, another 4 hours (approx.) of printing time is possible before the ink is completely used. At
that time, the ribbon must be replaced by removing both spools and unthreading the ribbon. Replace with a new

spool and ribbon assembly (36-12153) and an empty spool. (One of the old spools may be used if desired.)
NOTE

Use

only

36-12153).

DIGITAL-recommended

ribbons

(Part

No.

Use of other ribbons can cause damage and void

machine warranty. Ribbons must be made of nylon fabric with
nonabrasive inks. Carbon-based inks are extremely abrasive
and should not be used.
1.
2.

Set the POWER switch to OFF and lift the cover.
Record the setting of the Carriage Adjustment
lever. Move the Carriage Adjustment lever to the

highest number.
3s

Remove the ribbon spools and ribbon. Save one
spool to be used with the new ribbon.

7666-32a

Connect the hook on the end of the ribbon to the empty

spool.

Wind 10 turns of ribbon on the empty spool.

RIVET
7666-21

7822-22

CARRIAGE LEVER ADJUSTMENT

- RIVET
CP-2005

Place the full spool on the left spindle and turn

clockwise until it drops into position.

Take up the slack in the ribbon by turning the free
moving spool.

Guide the ribbon around idler spool A through

guide B, and around the outside of idler spools C

Return

the

Carriage

Adjustment

lever

its

original setting.

through E.

NOTES
Guide around the front of head F and idler spools

The rivet located on the ribbon must be on the spool or

G and H.

between the spool and the Direction Changing guide.

Guide the ribbon around tension arm |, through

Ribbon can be threaded in the opposite direction (from

slots J and

L to A).

(Direction

Changing guide), and

around idler spool L.

8.
Turn

the spool

clockwise

until

drops

into

position.

Close the cover and set the POWER switch to ON.

SECTION

INSTALLATION AND CONFIGURATION CHECKOUT GUIDE

PAPER
CATCHER
OPTION

GENERAL INSTALLATION
INFORMATION

27.5"
(696 mm)

12"____.(

(304.8mm)

This section contains the step-bystep

procedures

for

[

(]

unpacking,

A J

cabling, and unit checkout to ensure that the unit was not damaged

during shipment and that the unit is
operating

nection

properly

the

prior

(

to con-

33.5
851 mmy

communication

system.

The LA180 DECprinter should be
excessive

dust,

dirt,

L___zs.o"#]

installed in an area that is free of

21.7
(551mm)

corrosive

(635mm)

fumes, and vapors. To ensure that
the unit has proper ventilation and

cooling, the ventilation openings on
be obstructed. A minimum 4-inch
clearance

between

units

must

SERVICE
AREA

)]

the side of the cabinet should not
be

maintained at all times. Adequate
service clearance must also be proL

vided for servicing the unit. (Refer

to Figure 2.)

[

E—

D’\—-n—\fi

)’-\_/—&

—

SR —

ml
D

|
DIMENSIONS

E
*

INCHES

33.5|127.5|

|[21.7|

MILLIMETERS

851|696

|356|

551 | #

J__ v

F
|96
(2440

%100 FT MAXIMUM

(2540mm)

SERVICE
AREA
cp-2024

Figure 2

Site Considerations

STRAPPING

——

FULL
TELESCOPE
CAP

STITCHED

TUBE

—_—

POLYBAG |
—

WOOD BRACE

HEX

HEAD

a—F— TERMINAL

BOLTS \
/MICROFOAM

wOOD SKID

POLYBAG

TEE

NUTS

CcP-2187

Figure 3

LA180 Packaging

UNPACKING AND INSPECTION
The following procedure outlines the steps required for

Remove the

unpacking and inspecting the LA180.

skid and place it in the desired location.

printer from the wooden shipping

Cut the nylon retaining straps from around the

Lift the LA180 top cover assembly, and clip and

shipping carton and discard them.

remove the nylon cable tie securing the print head

assembly (Figure 4). Remove the caution tag.
Remove the outer cardboard shipping container.
Install and adjust the leveling feet on the LA180

Remove all shock-absorbing material and packing

legs.

from around the LA180 (Figure 3).

10.

Remove the poly bag from the printer.

If necessary, wipe all outer surfaces with a clean,
soft, lint-free cloth.

Loosen and remove the hex head bolts that secure

11.

the wood leg brace to the skid assembly. Remove

Connect the interface cable to the user’s equip-

ment. (See Interface Description.)

microfoam from around each leg of the LA180.

NOTE

Carefully inspect the LA180 cabinet and carriage

Site

assembly for

Corporation. Interface logic connections must be speci-

possible shipping

damage.

Inspect

plans

are

not

supplied

Digital

Equipment

and check the enclosed packing list for lost or

fied

missing items.

customer, because each installation may be different.

Report any

damaged or missing

items to the local DIGITAL Field Service or Sales

and

provided

the

system

supplier,

Office and to the local carrier.

CABLE
TIE

7555-10

Figure 4

Cable Tie Location

the

PACKING PROCEDURES

If it becomes necessary to ship your LA180 to another

location, repack it per the following procedure.
1.

Perform the self-test procedure as follows:

Set the ON LINE/OFF LINE switch to OFF
LINE.

Remove the ribbon and paper.

Open the top cover assembly and set the
SELF TEST switch to ON; close the cover.

Using a

nylon

cable

tie, secure the print head

Set the ON LINE/OFF LINE switch to ON

assembly to prevent movement while in transit.

LINE. The LA180 will automatically print
the full complement of 96 upper and lower

Pack the LA180 as shown in Figure 3.

case

alphanumeric

characters

(Figure

across the line printer paper. The printer will

print continuously

until

either the SELF

TEST or ON LINE switch is turned off.

ACCEPTANCE PROCEDURES
Perform the following procedure.

50 Hz/60 Hz CONVERSION

If the desired results

are not achieved, refer to the troubleshooting guide in

The LA180 DECprinter | is configured for 50 Hz or 60

Section 5.

Hz. Changing frequency requires changing power transformers:

Install a ribbon per the ribbon installation procedure (Section 2).

Power Transformer, DEC part no.

16-12257-00

NOTE

The LA180 must be loaded with 14-7/8-inch wide paper

when performing the self-test procedure.

Install

paper

per

the

paper

Power Transformer, DEC part no.

16-12256-00.
procedure

WARNING

(Section 2).

Changing power transformers must be performed by a
qualified technician.

CAUTION
Before connecting the LA180 to a power source, ensure

Refer to the LAT80 DECprinter | Maintenance Manual,

that the line voltage and frequency are compatible with

EK-LA180-MM-001, for the power transformer replace-

the power requirements of the machine. Ensure that the

ment procedure.

POWER switch on the console is OFF.
3.

Connect the LA180 line cord to the correct wall

receptacle; set the

POWER switch to ON. The

print head automatically positions itself to the left

margin.

INTERFACE DESCRIPTONS
Using the recommended interface (Figure 5), the LA180 can be used with up to 100 ft of cable. The interface cable

(Figure 6) connects to J3 on the logic board. Table 1 describes the pinning at J3.

Table 1
J3 Pinning

USERS

Signal

Signal
GND

DATA STROBE

DATA 1

GND

DATA 2

GND

DATA 3

GND

DATAA4

GND

DATAS

GND

DATA 6

GND

DATA 7

GND

DATA 8 or PARITY

GND

DEMAND

GND

ON LINE

GND

BUSY

GND

PAPER FAULT

GND

EQUIPMENT

LA180O
+5V

DRIVERS

8881 }

h
|
+ 5V

(

. ?

MAX[ MUM
CABLE

LENGTH
100 FT

+5V

RECEIVERS

[

3308 |

%150@

RECEIVERS

8640 ’-—

1508

—-< 8640

3190 )

J93

(SEE NOTE)

L
]

DRIVERS

[ 8881
> 3308

\_J_'

Note:
Drivers must be capable of sinking 35ma.
CP-2050

Figure 5

LA180 Interface

BC11S Cable Pinning
FROM

COLOR

CONNECTION

FROM

CONNECTION

COLOR

CONNECTION

BLU

P1-SS

P2-D

GRV

P1-V

P2—-AA

WHT

P1—PP

P2—F

RED

P1-U

P2—BB

ORN

P1-AA

P2—-V

BLU

P1-VV

P2—-A

WHT

P1—EE

P2—R

BLK

P1-UU

P2—-B

GRN

P1—-L

P2—KK

ORN

P1-N

P2—HH

WHT

P1-K

P2—LL

BLK

P1—M

P2-JJ

BRN

P1—-HH

P2—N

GRN

P1-T

P2—-CC

WHT

P1-KK

P2—L

BLK

P1-S

P2-DD

GRY

P1-F

P2—PP

BRN

P1-Z

P2—-W

WHT

P1—E

P2—RR

BLK

P1-Y

P2—-X

BLU

P1—NN

P2—H

GRY

P1-DD

P2—-S

RED

P1—MM

P2—-J

BLK

P1-D

P2—-SS

ORN

P1—-CC

P2-T

BLU

P1-TT

P2—C

RED

P1-C

P2—-TT

YEL

P1-RR

P2—-E

GRN

P1-R

P2—EE

ORN

P1—-BB

P2-U

RED

P1-P

P2—FF

YEL

P1—-FF

P2—P

BRN

P1-X

P2-Y

GRN

P1-JJ

P2—-M

RED

P1-W

P2-2

YEL

P1—-LL

P2—-K

BCI1S

CP-2056

Figure 6

Interface Cable Connection Diagram

INTERFACE SPECIFICATIONS

Logical O (False)
0.0 to +0.8 V at input to LA180

DIGITAL-Specified Cable for PDP-11/PDP-8 Interface
BC11S

Minimum Time Between Characters
8.26 us

Recommended Interface Cables and Connectors for User

36 Conductor Round

Timing

Abbot Wire 16-000

See Figure 7

Brand Rex 63-000

Studd Wire 245-000
Mohawk WC 296-000

DEC 9107700

For

additional

following

interface

address

specifications,

write

to the

and request /nterfacing the LA7180

(Application Note No. ED 06347 76):

Mating Connector for J3
Berg 65043-015

DEC 12-10918-15

Digital Equipment Corporation

Communication Services

Logical 1 (True)

Whitney Street

Northborough, MA 01532

+2.0 to +5.0 V at input to LA180

ON LINE
(FROM LA180)

(

DEMAND

FROM LA180

_’:AII:.:

)

DATA
(INPUT TO LA180)

STROBE

(INPUT TO LA180)

;JI

' L

[

I I

+Ble

= —E

— C re— =

_.:

g ke

J-_

-J|

)

:‘_

H-——>|

- I—':
I

BUSY

(FROM LA180)

A = 0 sec min, 1 sec max

Notes:

I |

On Line;

Printer is ready to fundtion with a controller

Demand;

Demand pulse goes high with each character request

B = 0 sec min
C =50 nsec min

D = 100 nsec min

E = 50 nsec max

Data;

Input data

Strobe;

Data is strobed into single character buffer

F = 8.26 usec min

G = 100 nsec
H = 100 usec max

| = 60 msec min, 700 msec max (full line print)

(Buffer Full)

J=1.2 usec

Busy;

Indicates existing data processing must be completed

prior to accepting new data input. (Busy is an optional
signal and is not normally required.)

Paper

Generated by the LA180 to alert the controller that an

Fault

out-of-paper condition exists. The controller cannot send

data to the LA180 when this condition

exists.

cCP-2281

Figure 7

LA180 Timing Diagram

LA180 JUMPER SELECTIONS
Jumper Locations

The LA180 logic board jumper locations are shown in Figure 8. These jumpers, listed in Table 2, are described in the
following paragraphs.
Table 2

LA180 Module Jumper Configuration

Jumper

Function

Signal Location
J1-KK

Speaker Volume

Busy Signal

J3-PP

-12 V Interface Voltage

J3-UU

Clock (1200 baud/591 ns)

J3-LL

+12 V Interface Voltage

J3-MM

J3-KK

+5 V (Not Required)

Katakana Character Set

Auto Line Feed

R112/T214

W11

CBA (Delete)

E4-6

W12

591 ns Clock

Pins G-F (split lugs)

W13

1200 baud Clock

Pins H-F (split lugs)

Parity

Odd, Even, No Parity

E13

JUMPER FUNCTIONS
+5 V Interface Voltage

Speaker Volume
The

speaker

Jumper W6 is installed when +5 V is required for inter-

volume

can

varied

jumper W1,

face expansion; however, this jumper is not used with the

Removing W1 reduces the speaker volume.

LAXX-NW, NX interface.

Busy Signal Code

Katakana Character (Japanese Script) Set

Installing W2 enables transmission of BUSY to the CPU.

Katakana

When transmitted to the CPU, BUSY indicates that the

installed when this option is supplied with the LA180.

is an optional character set. Jumper W7 is

LA180 is printing or paper feeding and cannot accept

In addition, a jumper is added between split lugs COM

new data.

and K.
Auto Line Feed

=12 V Interface Voltage

Jumper W3

installed

when -12 V is

Jumper W8 is removed to activate automatic line feed.

required for

This generates line feed after a carriage return. When W8

interface expansion.

is installed, the line feed command must be part of the
Clock (1200 baud/591 ns)

user’s program.

Jumper W4 must be installed to complete the path of the
selected clock signal to the interface. The clock can be

Delete

1200

The delete jumper modification exists on LA180 logic

baud

or 591

ns;

however,

591

(W12)

modules used with a serial interface. If delete (177) is

required for the LAXX-NW, NX,

used
Jumper

installed

removed;

+12 V Interface Voltage

when +12 V

required

fill

character, the delete jumper must be

this

done to

enrsure

programming com-

patibility with the LA180 when using the serial inter-

for

face module.

interface expansion.

NOTE

No Parity — Jumpers

W12 and W13 cannot be installed at the same time.

lugs E, COM, and O.

591 ns Clock

Even Parity — Jumper installed between split

Jumper W12 (5691 ns clock), when installed with W4,

removed from split

lugs COM and E.

provides a 591 ns clock at J3-LL.

Odd Parity — Jumper installed between split
1200 Baud

lugs COM and O.

Jumper W13 (1200 baud clock), when installed with W4,
provides a 1200 baud at J3-LL.

Parity

Parity is determined by the jumper configuration at split
lugs E, COM, and O. When parity is activated by the

proper jumpers and a parity error occurs, three vertical
lines will be printed (parity error printout).

F, G, H

: 3 A

eiAT

e
p

ure 8
Logic Board Jumper Locat 1ons

vy e e

e
L
R
R
eL
e
e
e
e
PR L eSmatieenhy}.HHUHYJ._Hlf.MHIHU.HH.HYI.<

S, e

SPLIT LUGS

\lf%}:;itflg,&?!Uxfia?c’w?}fm?i

AR1 At{k

iy e (eeeetee e o R e SR
e e l,\!.,_\wri,.m.,_.n
SRRee eo
oeee eeBe WSe eei el
R

eiiee elee eee

R
o
A
bty

SPLIT LUGS
COM, K ? O

7455 v |

PROGRAMMER’S GUIDE
ECEIVII NG CHARACTERS AND COMMAN
DS
The LA180 receives commands as well as characters to

CR (015)

CR is a line terminator. It causes all

be printed, in the form of 7-bit ASCII codes. The only

characters in the LA180 memory to be

ASCII| control codes recognized by the LA180 are:

printed and performs a carriage return.

BEL (007)

Activates alarm bell.

BS (010)

Backspace.

LF (012)

Clears memory of all data.

LF is a line terminator. It causes all

The following table will be useful when writing programs

characters in the LA180 memory to be

that interface with the LA180. Table 4 lists the 7-bit

printed,

FF (014)

DEL (177)

performs

a carriage

return,

ASCIl codes and indicates the operation performed by

and advances paper one line.

the LA180 with each specific code it receives. Figure 9

FF is a line terminator. It causes all

illustrates the

characters in the LA180 memory to be
printed,

performs

line

rate

versus column width for the

LA180.

a carriage return,

and advances the paper to the first
printable line at the top of the next

LA180 LINE RATE vs COLUMN WIDTH

form. Table 3 lists the number of lines

500

associated

450

with

each

LENGTH

400

FORM switch position.

350

Table 3

300
LINES

PER

FORM LENGTH Switch Positioning
LENGTH

MINUTE

150

Printable Lines

Form Length

OF FORM

Per Form

(inches)

Switch Setting

(maximum)

3.5

3.6

5.5

6
7

8.5

250
200

100

—— NOMINAL £7%
0o

100

120 132

COLUMNS
CP-2250

Figure 9

LA180 Line Rate Versus Column Width

Table 4

ASCIl Receive Operations
RECEIVE OPERATIONS
Character

ASCII Code

Character

Printed

Action/Description

000

NUL

None

001

SOH

}

]

002

STX

003

ETX

004

EOT

005

ENQ

006

ACK

007

BEL

Sound Alarm Bell

010

Backspace one position

011

012

\
None

None

Performs

cycle,

carriage

return and advances paper one line.

013

\2)

None

014

Performs a print cycle and a carriage return and advances the paper
to the top of the next form

015

Causes all characters in the LA180
memory to be printed and performs
a carriage return.

016

None

017

020

DLE

021

DC1

022

DC2

023

DC3

024

DC4

025

NAK

026

SYN

027

ETB

030

CAN

031

032

SUB

033

ESC

034

035

036

037

None

040

Blank Space

9
None
Character is recieved and
stored in memory

Table 4

ASCIl Receive Operations (Cont)
RECEIVE OPERATIONS

Character
ASCII Code

Character

041

Printed
|

Action/Description
Character is received and

stored in memory

042
#

043

044
045

046
047
050
051
052

053

054
055

062
063

064
065
066
067
070

071

Vio|N|ololr|lw|INMN]—=lO
]|

060

061

wjlo|lvliola|ldlwi
v =]lO]|~

0b6
057

OIO(@ >INV

074

g|o(w|>»|@|
TM~V

072
073

075
076

077
100
101

102
103
104

v
Character is received and
stored in memory

Table 4

ASCII Receive Operations (Cont)
RECEIVE OPERATIONS
Character

ASCII Code

Character

Printed
E

105

Action/Description
Character is received and

112
113
114
1156

116
117
120

121
122
123

124
125
126

127
130

131
132
133

134

135

136

< XIS |<|c|A|w|m|o|T|o|Z|Z|(r|R|<|"IT|o

110
111

>IN

106
107

>|— ||~ |N|<|Xx]|s]|<|c||n|z|o|v|o|z|lz|r|x||—|z|o|m

stored in memory

137

146

147
150

|0 | o0 |T|D

144

145

142

143

| thlojloajo
|jTlo

141

JTJKQ

140

Character is received and
stored in memory

Table 4

ASCIl Receive Operations (Cont)
RECEIVE OPERATIONS

ASCIi Code

Character
Printed

Character

151

152

‘

153

154

Action/Description

Character is received and

stored in memory

155

156

n
o)

157

160

161

162

163

164

165

166

167

170

171

172

173

{

174

175

}

176

Character is received and
stored in memory

177

DEL

None

Clears the memory of all data with a
parallel interface. With a seial interface

177

character.

may be

used

full

AJC LINE FUSE Fi
. . VOLTAGE FUSE RATING
5V

230V

3AsRESV

iSASB 2ROV

AC LINE FUSE
115V

3ASB

230V

15 ASB

SERVO FUSE
3ASB
7937-40

Figure 10

LA180 Fuse Locations

SECTION 5
LESHOOTING GUIDE

Symptom

Possible Cause and Corrective Action

LA180 does not turn

AC power cord is not plugged into wall outlet; plug it in.

on when POWER switch

is set to ON

Current is not coming from wall outlet; check outlet with a known working elec-

trical device (such as a lamp).
Check ac line fuse. (For fuse location, see Figure 10)
If none of the above, contact your local Field Service office.

Print head does not

Check servo fuse, which might be blown. (For fuse location, see Figure 10.)

print characters

Print head may be set too far from paper; adjust the Carriage Adjustment lever
per Impression Adjustment procedure in this chapter.

Light print

Print head may be set too far from paper; adjust the Carriage Adjustment lever

per Impression Adjustment procedure in this chapter.
Ribbon ink has run out; replace ribbon.
Reverse ribbon after approximately 8 hours of continuous printing. Ribbon should

be reversed only once, then changed.
Paper does not advance

Improper loading of paper; check tractor covers to ensure that they are closed.
Holes in paper are torn; turn LA180 OFF and reload paper per paper loading
procedure in this chapter.

Paper snagged or caught by box.
Paper tearing on

Print head is exerting pressure on paper so that paper tears when it advances;

multipart forms

check print head position control. (Adjust Carriage Adjustment lever.)
Tension exerted on the paper by the tractors is incorrect.

Line bunching

Horizontal tension exerted on the paper by the tractors is excessive. To correct
move tractors closer together (Figure 11).

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*UNEVEN SPACING (LINE BUNCHING) IS A CHARACTERISTIC OF EXCESSIVE TRACTOR TENSION

Figure 11

Line Bunching

SECTION 6
LA180 SPECIFICATIONS

Line Length

Split forms

(forms with each side containing a
different number of sheets) are not recommended.

132 characters maximum

Spacing
10 characters/in. (horizontal)

6 lines/in. (vertical)

Ribbon

DIGITAL-specified nylon fabric (Part No. 36-12153)

Spool assembly: 0.5 in. wide X 60 yd long

Characters

96 upper/lower case ASCII
7 X 7 dot matrix (0.07 X 0.10in.)

Power

90—-132 Vac or 180—264 Vac

50
or 60 Hz
= 1 Hz
400 W maximum (printing)

Paper
Variable width: 3 to 14-7/8 in.

200 W maximum (idle)

Single-Part:
15 |Ib paper minimum

Temperature

Card stock thickness of 0.010 in. maximum

Operating

Multipart:

2- to 6-part (see Notes)
Thickness of 0.020 in. maximum

10° to 40° C (50° to 104° F), noncondensing
Nonoperating

-40° t0 66° C (-40° to 151° F), noncondensing

Tractor-drive, pin-feed

Relative Humidity
NOTES

Multipart forms may have only one card part. The
card must be the last part.

Operating
10 to 90% with a maximum wet bulb temperature of

28° C (82° F) and a minimum dew point of 2° C (36°
F) noncondensing

NCR or 3M paper, up to 6-part, must use ribbon

Nonoperating

on top copy. First surface impact paper is not

5 to 95%

recommended.

Dimensions

Continuous-feed, fan-fold business forms with 3-

27.5 in. wide

or 4-prong margin crimps on both margins (multi-

33.5in. high

part) are recommended. Stapled forms are not

21.7 in. deep

recommended and may damage tractors and other

areas of the machine. Dot or line glue margins are

Weight

acceptable (if line is on one margin only). Do not

102 b

line glue both margins as air will not be able to
escape and poor impressions will result.

SECTION 7
LAXX-NW, NX/LA180 BUFFERED SERIAL INTERFACE

GENERAL INFORMATION
INTRODUCTION

The LA180 is a parallel-input terminal that is capable of receiving 8 bits at one time. To enable the LA180 to receive one

bit at a time, such as inputs from a modem, a serial interface must be used. There are two different serial interfaces that
can be used with the LA180: the LAXX-NW and LAXX-NX.

The LAXX-NW is an EIA (RS232) module. It receives serial ASCII inputs and outputs parallel ASCII to the
LA180.

The LAXX-NX is a current loop interface. It receives serial ASCII inputs and outputs parallel ASCII to the LA180.

EIA (RS232) capability is also available on the LAXX-NX providing the proper interface cable is used (no
physical changes to the board are necessary).
All options can operate at 300, 600, 1200, 2400, 4800, or 9600 baud. These baud rates are switch-selectable on the
module. EIA operation enables automatic modem answering capability for unattended operation of type 202 modem.
NOTE

The LAXX-NW or NX must be installed in an LA180 with

a logic board (5411023) at Rev. R or higher.
GENERAL DESCRIPTION

Figure 12 shows the interface signals between the LAXX-NW, NX*, an LA180 printer, a type 202 modem, and a user's

serial device. WAKE UP from the LA180 initializes the LAXX, while the 591 ns clock signal clocks the interface. EIA
RECEIVED DATA is applied to the LAXX and converted to parallel ASCIl| and stored in a buffer. When the LA180 raises

the DEMAND line, 8-BITS of PARALLEL DATA is strobed (by the STROBE line) to the LA180. Since the LA180 is a slow
device (compared to the user’s serial line device), the LAXX has a buffer that can store up to 256 characters. When the
buffer is full, the LAXX transmits an ASCIlI XOFF signal to the user’s serial device. XOFF signals the user’s device to stop
sending data. (Full is defined as 192 characters. Buffer space for 64 characters is available to allow for added characters

transmitted by the user’s serial device before the user’'s device stops transmitting.) As the LA180 removes characters
from the LAXX buffer, and when the buffer is empty, LAXX transmits an ASCII XON signal to the user’s serial device.

XON signals the user’'s device to resume transmitting. XON and XOFF are not shown in Figure 12. These signals are
generated internal to the LAXX-NW, NX and are available to the user.

*For simplicity, the LAXX-NW, NX will be referred to as the LAXX in this manual.

FROM

SERIAL

DEVICE

—c1A RECEIVED DATA

8-BIT PARALLEL DATA
STROBE

LAXX-NX
- ONLY

WAKE

PAPER

SEFR"‘"%

TTL

LA180

DEMAND

20MA I LOOP IN

591 NS

INPUT

PRINTER

(WU)

FAULT

+5V, +12V, =12V

DEVICE

AR VX
INTERFACE
EIA

TRANSMITTED

T TL O UTPUT

DATA

LAXX-NX

SERIAL
=} SERIAL

20MA I LOOP OUT

®
RING
FROM

TYPE

sop {

INDICATOR

DATA CARRIER

REQUEST

DETECTOR

MODEM | paTA SET READY

SEND

_SUPERVISORY TRANSMITTED

ONLY

.
DATA

bATA TERMINAL READY

10
19

MODEM

CP~-2196

Figure 12

Serial Interface/LAiSO Simplified Interface Diagram

Current Loop Operation
The LAXX-NX version has 20 mA current loop optical isolators that can be used on the serial input and serial output

(XON-XOFF) lines. The use of these current loops is at the user's option.
EIA Operation

The RING INDICATOR is received from the modem and starts a 10-second timer in the serial interface. (The serial
interface must respond to the “ring” within the 10-second timeout.) Serial Interface answers the “ring” with DATA
TERMINAL READY. When the 202 modem receives DATA TERMINAL READY, it responds with DATA SET READY.
LAXX now transmits REQUEST TO SEND to the modem. The modem then transmits data to the LAXX for subsequent
outputting to the LA180 printer. This assumes that a proper DATA CARRIER DETECTOR signal has been received by the

LAXX and that reverse channel operation (SUPERVISORY TRANSMITTED DATA) is not controlling the sending modem.
Data will be printed by the LA180 until the sending modem terminates the transmission or the LAXX generates SUPERVISORY TRANSMITTED DATA. A PAPER FAULT from the LA180 will also terminate the transmission by removing
DATA TERMINAL READY.

SPECIFICATIONS
The following specifications and particulars are for informational purposes only and are subject to change without notice.

Physical

Double-height, single-width, extended-length module

Dimensions

25.40 cm long X 1.27 cm wide X 13.34 cm high

(10 in long X 5-1/4 in wide X 0.5 in high)
Weight

170 g (6 oz)

Maximum Cable Length
Current Loop Operation

The total maximum length of the BCO5F and BCO5M cables should not

exceed 304.8 m (1000 ft).
EIA Operation

User Input Connections

BCO5C maximum length 15.24 m (50 ft).
Two 40-pin connectors; one to interface to the user’'s device, the other to

interface to the LA180. Interface cables are supplied with the LAXX-NW,
NX.

Mounting Requirements

The module mounts on the rear door of the LA180 printer. It is secured to
the door’s four mounting bosses by four screws.

Electrical

All input power is supplied by the LA180.

Logic Power Requirements

+5V
@ 820 mA
+12 V@ 10 mA
-12 V@ 10 mA

Interfaces

EIA Interface

The signals for the EIA interface conform to the EIA RS-232-C standard.

LA180 Interface

Outputs from the LAXX-NW, NX are open collector drivers capable of sinking 40 mA. LAXX inputs are high-impedance, high-threshold receivers. All

LAXX input and output lines are terminated in the LA180 with 150 {2 to
+5 V and 330 {2 to ground, except for wakeup.
20 mA Current Loop Interface

(LAXX-NX only)

This interface converts a 20 mA current loop to TTL signals for use by the

LAXX-NX and also converts TTL signals (from LAXX-NX) to 20 mA current
loop.

Modem Interface

The modem control functions on the LAXX module conform to the EIA RS232-C standard and are compatible with type 202 modems.

Baud Rates

All modules can operate at 300, 600, 1200, 2400, 4800, or 9600 baud.

The baud rate is switch selectable (Table 5).
Module Types

LAXX-NW

Accepts EIA RS-232-C serial ASCII input and outputs parallel ASCII to the
LA180. LAXX-NW does not have the 20 mA current loop.

LAXX-NX

Same input and output as the LAXX-NW, but in addition has input/output
20 mA current loops.

Environmental

Temperature

Storage: —40° to 66° C (-40° to 150° F) noncondensing

Operating: 10° to 40° C (50° to 104° F) noncondensing
Relative Humidity

10 to 90% noncondensing

RELATED LITERATURE
The following list of documents contain useful information for installing, operating, and maintaining the LAXX option.
Documents published by DEC may be ordered from the nearest Digital Equipment Corporation Sales Office.

Document Title

DEC Document No.

EIA Standard RS-232-C

Bell System Technical Reference
Data Sets 202C and 202D
Interface Specification
PUB41202

LA180 DECprinter | User's Manual

EK-LA180-OP-002

LA 180 DECprinter | Maintenance Manual

EK-LA180-MM-002

INSTALLATION AND CONFIGURATION
GENERAL
Installing and configuring the LAXX-NW, NX requires performing the following steps, which are described in detail in the

PN
=

following paragraphs.
Installing the module on the door of the LA180

Connecting the cables to the module

Configuring the switches on the module for the appropriate usage (EIA, current loop)

Configuring the jumpers on the LA180 logic board

NOTE
The LA180 logic board (54-11023) must be a CS Rev. R
or higher.

MODULE INSTALLATION

CAUTION
Remove the LA180 line cord from the wall socket when
installing and configuring the LAXX-NW, NX.

The LAXX-NW or NX module mounts on the rear door of the LA 180 printer cabinet. Four screws are used to secure the
module to the mounting bosses on the door. Position the module with the input/output connectors (J2/J1) facing the

bottom edge of the door (Figures 13 and 14). Insert and tighten the four mounting screws (6-32 X 1/2) to 8 + 1 in.-lb.

S
8-32 SCREW,
WASHER,LOCK-WASHER

COVER PLATE:i:iiiii:

STRAIN

RELIEF~\\\\\\\\

20mA or EIA

CABLE\\\\\\\\

TWISTED PAIR

(+5V and GND)

SERIAL
INTERFACE

MODULE

CABLE
CLQQ:

Moo%iz

SCREW

BC08S-2 CABLE
SEE DETAIL
C

P
MOUNTING
BOSS

DOOR

Czl /

MOUNTING
BOSS

1/4"

SPACER

1/74"

9/16"

SPACER

A
VIEW

DOOR WITH 4 MOUNTING BOSSES

DOOR WITH 2 MOUNTING BOSSES
CP-2B62

Figure 13

Module Installation on LA180 Rear Door

MOUNTING
HOLES (4)

®)

1
S

TR102

E20

JUMPERS W1 THRU W8

_~ARE FACTORY INSTALLED
Y

—

LA180

_Je2

SERIAL
INPUT

USED ONLY ON LAXX

REV C OR HIGHER

O
GND

+5V
CP—-2197

Figure 14

Serial Interface Component Location

EIA CABLE CONNECTIONS

Two cables are required (Figure 15) for EIA operation. These cables can be used on both the LAXX-NW and NX modules;
however, the cables are supplied only with the LAXX-NW. Connect the cables as shown in Figure 15. Make the appropriate folds and bends in the BCO8S-2 cable and ensure that the smooth side of the cable is up when connected to J1 and
the ribbed side is up when connected to J3. Position the cable in the cable runway of the LA 180 rear door (Figure 13).

WARNING
The BC08S-2 cable and the LAXX module will be dam-

aged if the BC08S-2 cable is not properly installed.

/——70~10001-O1/02 (TWISTED PAIR-SEE
+5V

+5V

GND

|—

GND

LA180

BCOBS-2
RIBBED

SIDE

”

NOTE)

MODEM

LAXX -

CONNECTOR

BCOS5C-09

\ TO USERS.
or TYPE 103 (300 BAUD)

SMOOTH &

SIDE

\
40 PIN

NOTE:

CONNECTORS

1.Twisted pair used on Rev C or higher boards.
2.The above cables are supplied only with LAXX—-NW.

Figure 15

Cp-~2198

EIA LAXX-NW, NX Cabling

The cable pinning is shown in Figure 186.
In addition to the cables just described, a twisted-pair cable is used to supply +5 V power to the LAXX-NW or NX
module from the LA180 logic module. The twisted-pair is only required for modules of revision C or higher.

CURRENT LOOP CABLE CONNECTIONS
To cable the LAXX-NX for current loop operation, refer to Figure 17. Make the appropriate folds and bends in the BCO8S2 cable and ensure that the smooth side of the cable is up when connected to J1

and the ribbed side is up when

connected to J3. Position the cable in the cable runway of the LA180 rear door (Figure 13).

WARNING
The BC08S-2 cable and the LAXX module will be damaged if the BC08S-2 cable is not properly installed.
The three tables required are supplied with the module. The cable pinning is shown in Figure 16.
In addition to the cables just described, a twisted-pair cable is used to supply +5 V power to the LAXX-NW or NX
module from the LA180 logic module. The twisted-pair is only required for LAXX-NW or NX modules of revision C or
higher.

20MA

RCVR

20MA

RCVR

L
-

TO/FROM

USER'S SERIAL
DEVICE

(20MA CURRENTSX

20MA

LOOP APPLIES

XMTR +

_
e

ONLY TC
LAXX
- NX)

20MA XMTR —

_ TTL TRANSMITTED DATA
-

| UU

INPUT CONNECTOR

=
EIA

__EIA

TRANSMITTED

DATA

RECEIVED DATA

TO/FROM

REQUEST TO
~_RING

INDICATOR

__DATA

SET READY

_DATA

CARRIER

DETECTOR

SUPERVISORY TRANSMITTED DATA _

LL
NN
O

vv
|

LAXX

OUTPUT

LA180

INPUT

P STROBE L

=
@

TO/FROM

LA180

PRINTER

P. 05 H

P 06 H
WU

P 02 H

P O1

M
4

P 04 H

P 03 H

4
_

W
B

X
3

+ 12V

SS
<

\ ut

P 08 H

- 12V

\
NOTES:

flow arrows are
are

reversed

2. LAXX J1-LL:
3.

shown for

for

LA180

LAXX

Arrows

P 07 H

PAPER FAULT

1. Signal

P DEMAND H

(SEE NOTES)

D |

= ®)

CONNECTOR
CONNECTOR

DEVICE

DATA TERMINAL READY

(

>USER'S SERIAL

SEND

]

DATA

RECEIVED

LAXX

O--n" qum ?N 0x0< 0—0JVOZ o 0 O MOO QW

TTL

BWLTELX
T ma0l>

L
~

(090=0x0ToMm 0 >0<620c5mon$§6x010m006>

1200

BAUD/

591Ns

ROM

LA180

PRINTER

\\/

J1.

J3.

591ns

LAI8O J3-LL: 1200 baud/591ns
CpP-2204

Figure 16

LAXX-NW, NX and LA180

Connector Pin Assignments

)/-——~70—1000I—O1/02 (TWISTED PAIR-SEE NOTE 2)

+5V

GND

——

\,\(

8 PIN
CONNECTORS

+5V
GND

BCO8S— 2

)

LA180

f RIB’BED

40 PIN /

SIDE

SMO*OTH

NOTE 1)

8COSF—09

SIDE

CONNECTORS

TOTAL LENGTH

NOT TO EXCEED

1000 FEET

NOTES:
1.

(SEE

J2 BCOsM-2C (27")

(304.8M)

A one piece cable may be provided in place of BCO5M and BCO5F.

2. Twisted

pair on Rev C or higher boards.
CP-2199

Figure 17

Current Loop LAXX-NX Cabling

EIA SWITCH CONFIGURATION

Switches S1-1 through 3 (Figure 14) are used for baud rate selection. Switches S1-4 through 8 are used for selecting
various modem control functions. The baud rate selection switches are described in Table 5. The appropriate modem
control functions can be obtained using the switches described in Table 6. Table 7 contains a summary of all the switch
functions.

NOTE
There are two types of switch packs used in the manufacture of modules.

Switch packs by CTS - These switches are ON
when the switch slides are adjacent to the switch

position number.

Switch packs by AMP - These switches are ON
when the switch toggles are down adjacent to the
switch position number.

Table 5

Baud Rate Selection

Switch

Selected

S$1-1

$1-2

$1-3

Baud Rate

300 baud

OFF

600 baud

OFF

1200 baud

OFF

2400 baud

OFF

4800 baud

OFF

9600 baud

OFF

None

OFF

None

Table 6

Typical EIA Switch Configurations

Switch
Signal Line

Configuration

SUPERVISORY

S1-4 OFF

TRANSMITTED DATA

S1-5 OFF

(J2-FF* high indicates buffer is

S1-7 OFF

full).

S1-8 OFF

Function

This configuration is used with a manual con-

trol 202 modem with reverse channel.

SUPERVISORY

S1-4 ON

This

TRANSMITTED DATA

S1-5 OFF

answer 202

configuration

used

with

auto-

modem with reverse channel.

and

S1-7 OFF

The

DATA TERMINAL READY

S1-8 ON

signal is used to indicate a full buffer. The

(J2-FF* high indicates buffer is
full.

J2-DD*

high

indicate that the LA180 is ready to accept

LA180 is ready to accept data.)

data.

S1-4 OFF

[X ON (DC1)

DATA

DATA TERMINAL READY signal is used to

indicates

EIA TRANSMITTED DATA

SUPERVISORY TRANSMITTED

Standard signal for DIGITAL software.

S1-5 ON

X OFF (DC3)

S1-7 OFF

J2-F*]

S1-8 OFF

DATA TERMINAL READY

(J2-DD* low indicates buffer is

full.)

S1-4 ON

Typically used when the LA 180 is hard-wired

S1-5 OFF

to another terminal.

S1-7 ON
S1-8 OFF

*J2 on LAXX module.

Table 7

Switch

‘Function

Description
S1-1, 2, 3 are used to select baud rates from 300 to 9600

S1-1

Baud

S1-2

Rate

S1-3

Selection

S1-4

LAXX-NW, NX Switch Functions

Conditions DATA
TERMINAL READY

baud. Refer to Table 5 for baud rate selection.

When set to ON, DATA TERMINAL READY can be set (high)
by RING INDICATOR or the state of the LAXX character

buffer. The set conditions are determined by switches S1-5,
6. 7. and 8. Refer to the text for a complete description of
S1-4 functions.

When set to OFF, DATA TERMINAL READY is always set

(high).

Table 7
Switch
S1-5

LAXX-NX, NW Switch Functions (Cont)
Description

Function

Conditions REQUEST TO SEND and

When set to ON, REQUEST TO SEND is set (high) at all

SUPERVISORY

times and SUPERVISORY TRANSMITTED DATA is inhib-

TRANSMITTED

ited (remains low).

DATA

When set to OFF, REQUEST TO SEND is low at all times
and SUPERVISORY TRANSMITTED DATA is controlled by
the LAXX character buffer.

S1-5 also controls DATA TERMINAL READY providing S17 is ON. Refer to the text for a complete description of S1-5
functions.
S1-6

When set to ON, allow PAPER FAULT to clear DATA TER-

Conditions PAPER FAULT

MINAL READY providing S1-4 and 8 are ON and S1-7 is
OFF.

When set to OFF, PAPER FAULT has no effect on DATA
TERMINAL READY. Refer to the text for a complete description of S6 functions.
S1-7

Allows control of DATA TERMINAL

When set to ON, and providing S1-5 is OFF and S1-4 is ON,

READY by LAXX character buffer

the state of the LAXX character buffer will control DATA
TERMINAL READY. When the buffer is full DATA TERMINAL READY goes low. DATA TERMINAL READY goes high

(sets) when the buffer is less than full.
When set to OFF the buffer cannot control DATA TERMINAL READY. Refer to the text for a complete description of
S1-7 functions.
Allows control of DATA TERMINAL

READY

DATA

SET

RING

INDICATOR,

READY,

PAPER

When set to ON, and providing S1-4 is ON and S1-7 is OFF,
RING INDICATOR will cause DATA TERMINAL READY to

set (high).

FAULT

When set to OFF, RING INDICATOR will not set nor will
PAPER FAULT or DATA SET READY clear DATA TERMINAL READY. Refer to the text for a complete description of

S1-8 functions.

CURRENT LOOP SWITCH CONFIGURATION

Switches S1-1 through 3 (Figure 14) are used for baud rate selection. Switches S1-4 through 8 do not affect current loop
operation as indicated by Table 8. Table 5 describes baud rate selection. Table 7 contains a summary of all the switch
functions.

Table 8

Current Loop Switch Configuration

Signal Lines (JZ, Figure 15)

Switch Configuration

20 mA RCVR + (J2-K)

S1-4 through 8: Don’t care

20 mA RCVR - (J2-S)
20 mA XMTR + (J2-AA)

20 mA XMTR - (J2-KK)
NOTE
See Table 5 for baud rate selection.
LAXX-NW, NX JUMPER CONFIGURATION
Jumpers W1 through W8 (Figure 14) are factory installed and must remain in place for field usage.

LA180 LOGIC BOARD JUMPER CONFIGURATION
The LA180 logic board jumpers (Figure 18) must be configured as described in Table 9, when a serial interface is
installed. Some of the jumpers are optional and can be altered by the user as described in the following paragraphs.

NOTE
Two different colored jumpers are used on the LA180

logic board. One is white, the other is brown with a black
strip.

Table 9

LA180 Module Jumper Configuration with LAXX-NW or NX Installed

Signal

Jumper

Configuration

Function

Location

Optional

Speaker Volume

J1-KK

Removed

Busy Signal

J3-PP

Installed *

-12 V Interface Voltage

J3-UU

Installed

Clock (1200 baud/591 ns)

J3-LL

Installed*

+12 V Interface Voltage

J3-MM

Removed

+5 V (Not Required)

J3-KK

Removed

Katakana Character Set

Optional

Auto Line Feed

R112/T214

W11

Optional

CBA (Delete)

E4-6

W12

Installed

591 ns Clock

Pins G-F (split lugs)

W13

Removed

1200 baud Clock

Pins H-F (split lugs)

Parity

Optional

Odd, Even, No Parity

E13

*Jumpers W3 and W5 must be installed on site.

|e
SPLIT LUGS

.—:\RTmnfl\(rx!\e.lx)l.\.\.l!lll_l\

F, G, H

SPLIT LUGS

E, COM, K

RTS

f
et

e3R

7435 -

Figure 18

LA180 Logic Module

Jumper Locations

Speaker Volume
The speaker volume can be varied by jumper W1. Removing W1 reduces the speaker volume.
Busy Signal Code

Installing W2 enables transmission of BUSY to the CPU. When transmitted to the CPU, BUSY indicates that the LA180
is printing or paper feeding and cannot accept new data.
-12 V Interface Voltage
Jumper W3 is installed when -12 V is required for interface expansion.

Clock (1200 baud/591 ns)
Jumper W4 must be installed to complete the path of the selected clock signal to the interface. The clock can be 1200

buad or 591 ns; however, 591 ns (W12) is required for the LAXX-NW, NX.

+12 V Interface Voltage
Jumper W5 is installed when +12 V is required for interface expansion.

+5 V Jumper
+5 V jumper (W6) is not required. This voltage is supplied to the serial interface via a twisted pair.
Katakana Character (Japanese Script) Set
Katakana is an optional character set. Jumper W7 is installed when this option is supplied with the LA180. In addition, a
jumper is added between split lugs COM and K.

Auto Line Feed
Jumper W8 is removed to activate automatic line feed. This generates line feed after a carriage return. When W8 is
Installed, the LINE FEED command must be part of the user’s program.

CBA (Delete Function)
Jumper W11

Installed

Jumper W11 is installed on the LA180 logic module to delete the delete code (177). The delete code resets the character
address register on the LA180 logic module to zero. This clears all data between a line terminator and the delete code. A

line terminator is defined as any of the following: carriage return (CR), line feed (LF), or form feed (FF).
Input to LA180

Printout

Example
1

ABCDEFG <CR>

ABCDEFG

HIJK <DEL>LMNOP

LMNOP

Example 2

“THE QUICK BROWN FOX <CR>

“THE QUICK BROWN FOX

LEAPED <DEL> JUMPED OVER”

JUMPED OVER”

Jumper W11

Removed

When jumper W11 is removed, the delete code (177) is used as a fill character. This is done to ensure programming
compatibility with the LA180 when using the LAXX module.

Example

Input

Printout

ABCD <DEL> EFG

ABCDEFGH

591 ns Clock

Jumper W12 (5691 ns clock) is required for the serial interface (Table 9).
1200 Baud

Jumper W13 (1200 baud clock) must be removed when the serial interface is installed.
Parity

Parity is determined by the jumper configuration at split lugs E, COM, and O. When parity is activated by the proper

jumpers and a parity error occurs, three vertical lines will be printed (parity error printout).
However, in order to implement parity checking at the LA180, the transmitting device must be configured to transmit

seven data bits plus one parity bit. A 9-bit data pattern (eight bits of data plus one parity bit) cannot be checked for parity
by the LA180 because the parity bit (ninth bit) is not transferred to the LA180 (the LA180 is an 8-bit device).
e

No Parity — Jumpers removed from split lugs E, COM, and O.

Even Parity — Jumper installed between split lugs COM and E.

(Odd Parity — Jumper installed between split lugs COM and O.

NOTE
If the LA180 uses the extended character set, a jumper will
be installed between split lugs COM and K.

WAKE UP SIGNAL (WU H)
WAKE UP is a 700-ms pulse. It initializes the logic (LA180 logic as well as the LAXX) before the microprocessor on the
LA180 logic module starts to run. During power-up, WU is at a logic zero level. After one time constant (aproximately

700 ms), WU goes to a logic one level and the microprocessor starts to run. The WAKE UP signal is available at J3-H on
the LA180 logic module.

PARTS LIST
Table

10 lists the parts supplied with the LAXX/LA180 Buffered Serial Interface by part number, description, and

quantity.

Table 10

Parts List

Part No.

Description

QuantityT

LAXXTM

Serial interface module

BCO8S-2

2-ft interface cable

(supplied with all module options)
BCO5C-09

9-ft EIA interface cable

(supplied with LAXX-NW)
BCO5F-09

9-ft extension interface cable

(supplied with LAXX-NX module option)
BCO5M-2C

27-in. 20-mA current loop cable

(supplied with LAXX-NX module option)
70-10001-08

Cable, twisted-pair

90-06800

1/4 in — no. 6 spacer

90-06024-1

6-32 X 1/2 in screws

90-09534

9/16 in — threaded (L-32) spacer

CS-5412166-0-1

Brint Set

1 set

EK-LAXXN-OP-003

LAXX User’'s Manual

74-11607

Plate Cover

90-08509

Strain Relief

90-06037-1

Screw

90-08072-0

Washer

The module part number can be LAXX-NW or -NX depending on user requirements. The same modules are available in kits of five
modules. Kit designations are LAXX-MW or MX.

Kits contain 5 modules, 5 cables of each type, and 20 screws, 20-1/4 in spacers, and 10-9/16 in spacers.

SECTION 8
LAXX-KJ COMPRESSED FONT OPTION KIT

INTRODUCTION
The compressed font option is a mechanical option that provides the LA180 with the ability to print 132 columns on a
9-in. form with one strippable edge, or on a 9-1/2 in. form with two strippable edges. Once installed, no operator
intervention is required.

INSTALLATION
The compressed font option kit contains the following:

Quantity

Item

30-Tooth Timing Pulley

1212446-00

15-Tooth Timing Pulley

D-MD-7414908-0-0

Part Number

Item No. (Figure 19)

Pulley Clamp

C-MD-7414951-0-0

Timing Belt

1211583-02

Socket Head Cap Screw

9006350-8

Hex Socket Set Screw

9007722-10

9006565-00

(#10-32 X 1 in.)

(#1/4-20)
2

Kep Nuts

The following tools are required for installation:
gauge, and a torque-type Phillips screwdriver.

socket head wrenches, Phillips screwdriver, feeler gauges, alignment

Use Figures 19—22 and the following procedure as installation guides.

Remove power from the LA180 by disconnecting the ac plug.

Remove the printer paper and printer cover.

NOTE
Do not remove bezel

or fan screws when removing printer

housing.

Remove eleven 6-18 screws and flat washers that secure the printer housing to the cabinet base (Figure 19)
and set aside.

2 (6-18)
SCREWS

3-(6-18)
SCREWS
3 (6-18)

SCREWS

3 (6-18) SCREWS

7595-3

Figure 19

Printer Housing Removal

Remove the ribbon spools and ribbon.

Remove the four 6-32 screws, lockwashers, and flat washers that secure the print head to the carriage and
remove the print head and the ribbon cable (Figure 20).

Push the carriage assembly to the extreme left. Slip the timing belt off the dc motor pulley while turning
the pulley clockwise; remove the belt.

TIMING BELT AGAINST
‘

CARRIAGE ASSEMBLY

4 (6-32) SCREWS

CARRIAGE

LIP

PRINT HEAD

ASSEMBLY

Figure 20

——

Print Head Removal

Using a socket head wrench, loosen the set screw (item 7 in Figure 21)

in the pulley clamp (5) until the

existing timing pulley (3) can be removed from the motor shaft. This pulley clamp can be discarded.
Loosen the set screw in the other pulley clamp (4) then remove and save this pulley.

Assemble the cap head screw and Kep nuts, then insert through the left side bracket as shown in (6), Figure
21.
10.

Install the new 30-tooth timing pulley on the ribbon drive shaft (4). The side of the pulley with the flange
should be positioned toward the front of the machine. Position the pulley so that there is 0.29 = 0.03 in.
clearance between the back of the pulley and the mounting hardware for the shaft bearing. Secure the new

30-tooth pulley using the previously removed pulley clamp.
11.

Install the new 15-tooth pulley on the motor shaft and secure, using the new pulley clamp provided.

p-2285

Figure 21

Installation of Compressed Font Option Kit

(LAXX-KJ)

12.

Set the alignment gauge on the right side of the carriage shafts (Figure 22).

13.

Set the alignment gauge to zero by rotating the gauge bezel (Figure 22).

RIGHT

SIDE OF

CARRIAGE
SHAFTS

+0.0005 t0-001 +0.0015

-0.0005

-0.001

-0.0015

ALIGNMENT

GAUGE

7937-31

Figure 22

Alignment Gauge Positioning

DC MOTOR

14.

Slide the alignment gauge along the total length of the carriage shafts:

The maximum allowable deviation along the carriage shaft is 0.0015 (total indicator reading) with the
two ends of the carriage shaft being equal within 0.0005. If these values cannot be obtained, refer to
the LA180 Maintenance Manual.

15.

With the belt tension spring (Figure 23) in place, press the left-hand pulley against the printer mechanism
and slip on the new timing belt.

RIBBON
DRIVE
ASSEMBLY

TIMING BELT
SCREW

LEFT-HAND
PULLEY

BELT TENSION SPRING

TIMING BELT
7937-4

Figure 23

16.

Belt Tension Spring Location

Rotate the timing belt screw (Figure 23) until it just touches the ribbon drive assembly. The screw should
not exert pressure on the ribbon drive assembly.

17.

Secure the print head and TOP OF FORM indicator to the carriage with the four 6-32 screws, lockwashers,

and flat washers, ensuring that the timing belt is against the plastic lip (Figure 20). Make the screws finger
tight.

18.

Set the Carriage Adjustment lever to the minimum gap position (detent closest to the print bar).
CAUTION
It is possible to set the Carriage Adjustment lever beyond the

minimum gap position. If this is done, the correct head gap
adjustment cannot be made.
19.

Slide the alignment gauge along the carriage shaft to the point where the most positive reading on the gauge

is obtained. Mark the high spot on the print bar with a pencil (Figure 24).

6-32 SCREWS TO BE

0.010 FEELER

TIGHTENED TO 10 + 1 IN. LBS

GAUGE

OF TORQUE

PRINT BAR

PRINT HEAD
CAUTION
ENSURE THAT FEELER GAUGE IS INSERTED

BETWEEN THE PROTRUSIONS ON THE
PRINTHEAD. FAILURE TO DO SO WILL RESULT
IN IMPROPER CLEARANCE AND SHORTEN

THE LIFE OF THE PRINTHEAD.
7937-3

Figure 24

Print Head Adjustment

20.

Move the Carriage Assembly directly in front of the spot marked on the print bar.

21.

Place the alignment gauge in the center of the carriage shaft. Set the gauge to zero.

22.

Place the 0.010-in. flat feeler gauge between the print head jewel and the front surface of the print bar.
Push the print head snug enough against the feeler gauge to cause the indicator to move, but no more than

0.0005 (Figure 24).
CAUTION
Ensure that the feeler gauge rides between the protrusions on
the print head. Do not exert excessive force on the print head

when making the adjustment; it will cause the carriage shaft to

bow, resulting in more than 0.010 in. of clearance.
23.

Ensure that the print head is aligned parallel with the print bar; tighten the four 6-32 screws to 10 £ 1 in.-lb
of torque.

CAUTION
Do

not

apply

than

the

recommended

torgue

when

tightening the print head screws or the molded inserts in the
carriage assembly may be damaged.
24.

Remove the 0.010-in. feeler gauge while looking at the alignment gauge. The needle must move, but not

more than 0.0005 in.
NOTE
If the needle does not move or moves more than 0.0005 in.,
the head must be loosened and the procedure repeated. It may
take several tries to adjust the head correctly.

25.

26.

Replace the ribbon and ribbon spools.

Slide the carriage assembly along the carriage shaft to ensure that nothing is binding. Check to ensure that

the ribbon is not rubbing against the line indicator (adjust if necessary).
27.

Install the printer housing.

TEST AFTER INSTALLATION
Load the LA180 with paper that is at least 9 in. (22.86 cm) wide.

Set the ON LINE/OFF LINE switch to OFF LINE.
Set the POWER switch to ON.
Set the SELF TEST switch to ON.

Set the ON LINE/OFF LINE switch to ON LINE for a self-test printout.

Reader’s Comments
LA180 USER’'S GUIDE
EK-LA180-OP-003

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