Digital Equipment DECprinter I User manual

1st Edition, December 1975
2nd Printing (Rev), July 1976 (
3rd Printing
(R ev)' 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 -LA 180-0P-003
The following are trademarks of Digital Equipment
Corporation, Maynard, Massachusetts:
DEC DECtape
PDP
DECCOMM DECUS RSTS
DECsystem-10
DIGITAL
TYPESET-8
DECSYSTEM- 20
MASSBUS TYPESET-11
UNIBUS
9/77- 14
/
(
(
(

LA180 DE(print~r II
TABLE OF CONTENTS
Page
SECTION 1 OPERATOR'S GUIDE·
LA180 ALARM SIGNALS ........................................... .
LA180 OPERATOR CONTROLS
....................................... .
SELF-TESTING THE LA180 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 4
USING THE LA180 ............................................... 7
OPTIONS ..................................................... 8
SECTION 2 LOADING PAPER AND RIBBON CHANGING
LOADING
PAPER ................................................ 9
LOADING NEW FORMS .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 9
RELOADING PAPER .............................................. 14
RIBBON INSTALLATION ............................................ 15
SECTION 3 INSTALLATION AND CONFIGURATION CHECKOUT GUIDE
GENERAL INSTALLATION INFORMATION ................................. 19
UNPACKING AND INSPECTION ........................................ 21
PACKING PROCEDURES ............................................ 22
CHECKOUT AND ACCEPTANCE PROCEDURES
............................... 22
50 Hz/60 Hz CONVERSION ........................................... 22
INTERFACE DESCRIPTIONS .......................................... 23
INTERFACE SPECIFICATIONS ......................................... 25
LA180 JUMPER SELECTIONS
......................................... 26
JUMPER FUNCTIONS
.............................................. 26
iii

TABLE Of CONTENTS (Continued)
Page
SECTION 4 PROGRAMMER'S GUIDE
RECEIVING CHARACTERS AND COMMANDS
................................ 29
SECTiON 5 TROUBLESHOOTING GUIDE
SECTION 6 lA180 SPECIFICATIONS
SECTION 7
lAXX-NW, NX/LA180 BUffERED SERIAL INTERfACE
GENERAL INFORMATION ....... .
iNSTALLATION AND CONFIGURATION
PARTS LIST
SECTION 8
lAXX-KJ COMPRESSED FONT OPTiON KIT
INTRODUCTION
INSTALLATION ....... .
TEST AFTER INSTALLATION
iv
... 39
.43
... 55
· 57
· 57
· 64

PREFACE
The LA 180 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 LA 180. 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.

PAPER
ADVANCE
KNOB RIBBON SPOOLS
CARRIAGE
ADJUSTMENT
LEVER
OPERATOR CONTROLS
•
•
•
SELF TEST
SET
VFU
LENGTH OF FORM
OPERATOR CONTROLS
•
•
HEAD OF FORM
ON LINE/OFF LINE
• POWER
TRACTOR TRACTOR
ADJUST
KNOB
7595 -3

LA180 ALARM SIGNALS
SECTION 1
OPERATOR'S GUIDE
The LA 180 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
HEAD OF FORM Pushbutton
The HEAD OF FORM pushbutton, when pressed, causes
the line printer paper to advance to the top of the form,
as determined by the SET VFU and LENGTH OF
FORM switches. The HEAD OF FORM pushbutton is
only active off-line.
7595-9
ON LINE/OFF LINE Switch
The ON LINE/OFF LINE switch enables the operator to
place the LA180 off-line or on-line with an operating
system. When off-line, the HEAD OF FORM switch is
activated.
POWER ON/OFF Switch
The POWER switch controls power application to the
LA180.

SELF TEST Switch
In the on-line mode, setting the SELF TEST switch to
ON causes the LA 180 to print out all the ASCII
characters.
NOTE
When performing a self-test, 14-7/S-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 LA 180
does not know where the form begins. Pressing SET
VFU establishes the starting point on the form.
2
7595-10
LENGTH OF FORM Switch
The LENGTH OF FORM switch is set to the number
corresponding to the form length in inches. To set the
form length to 11 inches, set the switch to 11 _(The new
switch setting
is delayed until one form passes through
the LA180 at the old switch setting. Pressing SET VFU
eliminates the l-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 knob enables the paper to be rolled
freely
in either direction, and allows preoise vertical
forms positioning.
Tractor Adjust Knobs
The Tractor Adjust
adjustment of forms. knobs allow fine horizontal
Carriage Adjustment Lever
The Carriage Adjustment lever controls the print head
gap for single
or multipart forms.
NOTE
Refer to the Impression Adjustment procedure in
Section 2 when setting the Carriage Adjustment lever.
3
PUSH IN HERE
AND TURN TO
ADJUST PAPER ---~ .
VERTICALLY
PAPER
ADVANCE
KNOB
7595-11
7595 ·4
TRACTOR
ADJUST
KNOB
7595-7
CARRIAGE
ADJUSTMENT
LEVER

SELF-TESTING THE LA180
The following self-test procedure provides a simple and accurate method of testing the LA 180.
1. Install 14-7/8-inch {132-columnl paper.
2.
Set the ON LINE/OFF LINE switch to OFF LINE.
3. Set the POWER switch
to ON.
4. Set the SELF TEST switch to ON.
5. 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.
1. Set the
ON LINE/OFF LINE switch to OFF LINE.
2.
Set the SELF TEST switch to OFF.
3. Set the ON LINE/OFF LINE switch to ON LINE to resume normal operation.
4

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Figure 1 Self-Test Printout
5

SETTING THE TOP OF FORM
1. Set the POWE R switch to ON.
2. Set the ON LINE/OFF LINE switch to OFF
LINE.
3. Set
the LENGTH OF FORM switch to the number
corresponding
to the form length in inches.
1. 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.
2. Press
the SET VFU pushbutton.
3. 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.
6
TOP OF FORM
BAR

USING THE LA180
Using the LA 180 requires almost no operator intervention. These few steps are all that may be required to place
your LA 180 on-line.
1. Load the paper.
2. Set
the ON LINE/OFF LINE switch to OFF LINE.
3. Set the SELF TEST switch
to OFF.
4. Set the POWER switch to ON.
5. Set for top of form, if applicable.
6. Set the ON LINE/OFF LINE switch to ON LINE.
The
LA 180 is now on-line and fully operational.
7

OPTIONS
The basic LA 180 DECprinter I can be expanded to provide the user with a number of functional options for receiving
and handling
data. The functional options are described in the following table.
Option Name
LAXX-KJ Compressed
Font Option
LAXX-LD Paper Basket Assembly
LAXX-NW Serial Interface
LAXX-MW
LAXX-NX Serial Interface
LAXX-MX
LAXX-NY Serial Interface
LAXX-MY
LA
180 Options
Description
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.
Located on
the back of the LA 180, the paper basket
will hold up to half a box of 14-7/8-in. wide paper.
Standard LA
180 serial interface with 256 character
buffer, EIA RS-232C signaling.
Kit of five LAXX-NWs.
Standard LA 180 serial interface with 20 mA current
loop signaling.
Kit of five LAXX-NXs.
Standard LA180 serial interface with EBCDIC
to
ASCII converter.
Kit
of five LAXX-NYs.
8

SECTION 2
LOADING PAPER AND RIBBON CHANGING
LOADING PAPER
The LA 180 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:
1. Paper Positioning
2. 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 of
interruption.
LOADING NEW FORMS
PAPER POSITIONING PROCEDURE
1. Set the POWER switch to OFF.
2. Lift the cover.
3. Place
the tractor-feed paper on the floor between
the legs of the LA 180. (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.
:a~ Da:o
•
7666 · 14
9

Open the left tractor cover so that the tractor pins are
exposed.
Move the Carriage Adjustment lever to the highest
number (toward operator).
10
7595·11
7666·32
CARRIAGE
ADJUSTMENT
LEVER

1. Feed the paper through the load channel under the
terminal and align the left paper margin holes over
the left tractor pins.
2. Close
the left tractor cover.
1. Loosen
the Tractor Adjustment knob on the right
tractor about 1/2 turn.
2. 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.
3. Close
the tractor cover.
NOTE
Ensure that the paper does not pull against the tractor
pins or bow in the middle.
4. Tighten the tractor adjustment.
5. Set
the LENGTH OF FORM switch to the number
corresponding to the form length and proceed to
the impression adjustment.
7666·27
11

IMPRESSION ADJUSTMENT
NOTE
The Carriage Adjustment lever is normally set forward
(to notch number 1) for single thickness paper. The
following procedure is applicable only to multipart
forms.
1. Set
the POWER switch to OFF.
2. Set the Carriage Adjustment lever to the number
corresponding
to the number of parts in the form.
3. Turn the Paper Advance knob counterclockwise
while moving
the Carriage Adjustment lever for-
ward 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.
4. Set the POWER switch to ON and resume
operation.
NOTE
If the impression is unsatisfactory due to a worn ribbon,
perform
the ribbon installation procedure. A worn
ribbon is indicated when the first copy in a multipart
copy is poor but the remaining copies are good.
12

HORIZONT AL 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 of aligning the type
within the appropriate columns on the paper.
1. Set
the POWER switch to OFF.
2.
3.
Lift the cover and loosen both Tractor Adjustment
knobs
about 1/2 turn.
Move the tractors the desired amount (1/2 in.
max.)
to have characters type in the appropriate
columns.
4. 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
When rolling paper backwards, ensure that paper per-
forations do not snag on the print head.
13
PUSH IN HERE
AND TURN TO
ADJUST PAPER ------0 .
VERTICALLY
PAPER
ADVANCE
KNOB
-7666-48
7595-4

RELOADING PAPER
1. Set the POWER switch to OFF.
2. Lift the cover.
3. Place the tractor·feed paper on the floor between
the legs of the LA 180.
4. Open both tractor covers so that the tractor pins
are exposed.
NOTE
Ensur-e that the leading edge of the forms is directly
below and parallel
to the feed slot.
5. Feed the paper through the load channel under the
terminal and align the paper holes over the tractor
pins.
6. Close the tractor covers.
14