Digital Equipment LG31 Administrator Guide

LG31 Printer
Installation/Operator’s Manual
Order Number EK-LG31E-IN-002
Digital Equipment Corporation

1st Edition, November 1987
2nd Edition, June 1989
The information in this document is subject to change without notice and should
not be construed as a commitment by Digital Equipment Corporation. Digital
Equipment Corporation assumes no responsibility for any errors that may appear
in this document.
The software described in this document is furnished under a license and may
be used or copied only in accordance with the terms of such license.
No responsibility is assumed for the use or reliability of software on equipment
that is not supplied by Digital Equipment Corporation or its affiliated companies.
© Digital Equipment Corporation. 1989. All rights reserved.
Printed in U.S.A.
The READER’S COMMENTS form on the last page of this document requests
the user’s critical evaluation to assist in preparing future documentation.
The following are trademarks of Digital Equipment Corporation:
DEC DIBOL UNIBUS
DEC/CMS EduSystem VAX
DEC/MMS IAS VAXcluster
DECnet MASSBUS VMS
DECsystem–10 PDP VT
DECSYSTEM–20 PDT
DECUS RSTS
DECwriter RSX
dt
This document was prepared using VAX DOCUMENT, Version 1.1

Contents
Preface xi
Chapter 1 GENERAL INFORMATION
1.1 Overview ............................................1–1
1.2 General Description ....................................1–1
1.3 Major Components .....................................1–2
1.3.1 Control Panels . . . ..............................1–2
1.3.2 Printer Mechanism .............................1–4
1.3.3 Control Electronics..............................1–4
1.3.4 Serial Interface . . ..............................1–4
1.3.5 Power Supply ..................................1–4
1.4 Printed Circuit Boards ..................................1–4
1.5 Printer Feature Summary . ..............................1–5
1.6 Specifications . . . ......................................1–6
1.6.1 LG31 Printer Specifications . ......................1–6
1.6.2 Resident Fonts . . . ..............................1–8
1.6.3 Recommended Paper Weights .....................1–8
1.6.4 Print Speeds ..................................1–9
1.6.5 Resident Character Sets.........................1–10
iii

Chapter 2 INSTALLATION AND CHECKOUT
2.1 Overview ............................................2–1
2.2 Unpacking ...........................................2–2
2.2.1 Inspection ....................................2–2
2.2.2 Unpacking Procedure ............................2–3
2.3 Installation .........................................2–11
2.3.1 Print Ribbon Cartridge .........................2–11
2.4 Apply Power to the LG31 . . .............................2–12
2.5 Powering and Testing the LG31 Printer....................2–14
2.6 Host To LG31 Printer Set-up Procedure....................2–16
2.6.1 Interface Control Strap Settings ..................2–16
2.6.2 Serial Interface Settings for VAX/VMS. . ............2–16
2.6.3 RSX Settings .................................2–17
2.6.4 RT-11 Settings . . . .............................2–17
2.6.5 RSTS/E Settings . .............................2–18
2.7 Connecting the Host to the LG31 Printer ..................2–19
Chapter 3 CONTROLS AND INDICATORS
3.1 Introduction ..........................................3–1
3.2 Power Switch ON/OFF ..................................3–1
3.3 Outer Control Panel ....................................3–3
3.3.1 Outer Control Panel Components ..................3–4
3.3.2 Outer Control Panel Keys . . ......................3–5
3.4 Top Cover Interlock Switch ..............................3–5
3.5 Inner Control Panel ....................................3–7
3.5.1 Three-Character LED Display ....................3–10
3.5.2 Audio Alarm..................................3–10
3.5.3 Initialization Switch............................3–11
3.5.4 Key Functions . . . .............................3–12
3.6 Paper Tension Lever ..................................3–16
3.7 Print Gap Control ....................................3–17
3.8 Margin Adjust Knob...................................3–17
iv

Chapter 4 SETTING COMMUNICATIONS AND PRINT
PARAMETERS
4.1 Introduction ..........................................4–1
4.2 Interface Control—Host to Printer Interface .................4–2
4.3 Configuration Menu ....................................4–5
4.3.1 Listing the Parameters ..........................4–5
4.3.2 Communications Parameters ......................4–8
4.4 Print Characteristics ..................................4–14
4.4.1 Font . . . .....................................4–14
4.4.1.1 Style..................................4–16
4.4.1.2 CPI...................................4–17
4.4.1.3 Country (Character Sets) ..................4–18
4.4.1.4 Mode .................................4–19
4.4.1.5 Horizontal Expansion.....................4–20
4.4.1.6 Vertical Expansion . . .....................4–21
4.4.2 LPI .........................................4–22
4.4.3 Forms Control . . . .............................4–22
4.4.4 Margin Settings . . .............................4–24
4.4.5 Horizontal Tab Stops ...........................4–25
4.4.6 Vertical Tab Stops .............................4–26
4.4.7 Printer Control Straps ..........................4–26
4.5 Function Mode . . .....................................4–28
4.5.1 Printer Initialization ...........................4–28
4.5.2 Forms Setup .................................4–31
4.5.2.1 Top Of Form (TOF) . .....................4–33
4.5.3 Print Adjustment . .............................4–35
4.5.4 Forms Adjustment .............................4–36
4.5.5 Margin Setup .................................4–38
4.5.6 Reverse Form Feed ............................4–40
4.5.7 Buffer Clear ..................................4–41
v

Chapter 5 PRINTER DIAGNOSTICS
5.1 Introduction ..........................................5–1
5.2 Self-Tests ............................................5–1
5.2.1 Power-Up Self-Tests .............................5–1
5.2.2 Printing Self-Test . ..............................5–2
5.2.3 Operational Self-Test ............................5–2
5.2.3.1 Print Test Pattern . . ......................5–3
5.3 Alignment Tests . ......................................5–6
Chapter 6 PRINTER OPERATION
6.1 Introduction ..........................................6–1
6.2 Loading Paper . . ......................................6–1
6.3 Installing/Replacing Ribbon Cartridge ......................6–5
6.4 Re-Inking Ribbon ......................................6–7
6.5 Paper Motion . . . ......................................6–8
6.5.1 Form Feed ....................................6–8
6.5.2 Line Feed .....................................6–9
6.5.3 Forward Microstepping ..........................6–9
6.5.4 Reverse Microstepping ...........................6–9
6.5.5 Reverse Form Feeds .............................6–9
6.6 Aligning Paper . . ......................................6–9
6.7 Buffer Clear .........................................6–10
6.8 Low Paper Printing ...................................6–10
6.9 Hex Dump ..........................................6–13
Chapter 7 OPERATOR MAINTENANCE
7.1 Introduction ..........................................7–1
7.2 Operator Troubleshooting. . ..............................7–2
7.3 Printer Parameters ....................................7–5
7.3.1 Power-Up Parameters Set . . ......................7–6
7.3.2 Power-Up Parameters Retained ....................7–7
7.3.3 Reset State....................................7–8
vi

Appendix A LED DISPLAY LIST
A.1 List of All Control Panel Readouts . . . ..................... A–1
Appendix B PARAMETER SELECTION
Appendix C LG31 COUNTRY KITS
Index
Figures
1–1 LG31 Printer ...................................1–3
2–1 Cut Straps and Remove ...........................2–3
2–2 Opening Carton . . . ..............................2–4
2–3 Removing Metal Brackets . . . ......................2–5
2–4 Positioning Ramps . ..............................2–6
2–5 Removing Printer from Pallet ......................2–7
2–6 Top of Lower Front Interior . . ......................2–8
2–7 Top View - Shuttle Area ...........................2–9
2–8 Paper Handling Hardware . . . .....................2–10
2–9 Power Connection . .............................2–13
2–10 Cover Interlock Switch ...........................2–15
3–1 Power Switch ...................................3–2
3–2 Location of the Outer Control Panel .................3–3
3–3 Outer Control Panel ..............................3–4
3–4 Cover Interlock Switch ............................3–6
3–5 Location of the Inner Control Panel ..................3–7
3–6 The Inner Control Panel ..........................3–8
3–7 Configuration Menu ..............................3–9
3–8 The Inner Control Panel Showing Display, Audio Alarm,
Initialization Switch.............................3–11
3–9 Function Mode Key Operations ....................3–13
3–10 Paper Tension Lever, Print Gap Control, Margin Adjust . 3–17
vii

4–1 Serial Interface Connector . . . ......................4–2
4–2 Location of the Serial Interface Connector .............4–3
4–3 Configuration Menu ..............................4–7
4–4 Interface Control Straps..........................4–10
4–5 Interface Control Speed ..........................4–11
4–6 Interface Control Parity..........................4–12
4–7 Interface Control Type ...........................4–12
4–8 Font Menu ....................................4–15
4–9 Font Style ....................................4–16
4–10 Font CPI .....................................4–17
4–11 Font Country ..................................4–18
4–12 Font Mode ....................................4–19
4–13 Font Horizontal Expansion . . .....................4–20
4–14 Font Vertical Expansion ..........................4–21
4–15 Lines Per Inch .................................4–22
4–16 Forms Control .................................4–23
4–17 Margin Settings . . . .............................4–24
4–18 Horizontal Tab Stops ............................4–25
4–19 Vertical Tab Stops . .............................4–26
4–20 Printer Control Straps — Factory Setting ............4–27
4–21 Function Mode .................................4–29
4–22 Key (4) Form Size Setup Example ..................4–33
5–1 ASCII Print Test Pattern - Sample Printout ...........5–2
6–1 Sprocket Hole Dimensioning Diagram . . . .............6–2
6–2 Paper Loading Diagram ...........................6–3
6–3 Paper Loading, Lower Tractor ......................6–4
6–4 Ribbon Cartridge Installation, Paper Gap Adjuster Setting 6–5
6–5 Ribbon Cartridge Installation, Holddown and Re-Inker . . . 6–6
6–6 Ribbon Cartridge Installation, Ribbon Guide and Striker
Bar...........................................6–8
6–7 Margin Adjust Knob.............................6–10
B–1 Configuration Menu with Program Mode Parameters . . . B–2
B–2 Function Mode Options .......................... B–3
viii

Tables
1–1 LG31 Printed Circuit Boards . ......................1–5
1–2 LG31 Printer Specifications . . ......................1–6
1–3 Resident Fonts..................................1–8
1–4 Recommended Paper Weights ......................1–8
1–5 Print Speeds ...................................1–9
2–1 Default Characteristics ..........................2–18
3–1 Initial Key Functions ............................3–14
4–1 Pin Assignments . . ..............................4–4
4–2 Serial Interface Strapping Options .................4–13
4–3 Initialization Procedure ..........................4–30
4–4 Lock-Up Printer Initialization Procedure . ............4–31
4–5 Forms Setup Procedure ..........................4–32
4–6 Print Review Procedure ..........................4–35
4–7 Forms Adjustment Procedure. .....................4–37
4–8 Margin Setup Procedure .........................4–38
4–9 Reverse Form Feed Procedure .....................4–40
4–10 Buffer Clear Procedure ..........................4–41
5–1 Print Test and Diagnostic Self-Test Procedure ..........5–3
5–2 Diagnostic Fault Codes ...........................5–4
6–1 Low Paper Printing Procedure .....................6–11
7–1 Possible Mechanical Problems and Remedies ...........7–2
7–2 Possible Electrical Problems and Remedies ............7–4
7–3 Factory Settings . . . ..............................7–6
7–4 Printer Parameters Power-Up Set ...................7–7
7–5 Printer Parameters Retained on Power-Up ............7–7
7–6 Reset State Default Parameters .....................7–9
ix

Preface
Purpose
This manual provides information on the installation and operation
of the LG31 300 LPM Line Matrix Printer. It contains instructions
and procedures to help a user install, power-up, set/load, operate, and
maintain the LG31 printer.
NOTE
The LG31 printer is installed, maintained, and supported by
Digital Equipment Corporation.
Manual Organization
This manual is organized as follows:
•Chapter 1 General Information—Contains a product overview,
operational/programming features, options, and printer specifica-
tions.
•Chapter 2 Installation and Checkout – Provides step-by-step
instructions for proper unpacking/installation of the LG31 printer
and ac power cord connection.
•Chapter 3 Controls and Indicators – Describes the LG31 printer
controls and indicators.
xi