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DECwriter IV Pocket Service Guide
Company:
Digital Equipment Corporation
Part:
EK-LA34S-PS
Keywords:
Cited by:
EK-LA34S-TM-001,
DECwriter IV Series Technical Manual
EK-VAXV3-HB-001,
VAX Maintenance Handbook, VAX-11/750
Versions
Part
Date
Title
EK-LA34S-PS-001
1981
DECwriter IV Pocket Service Guide
Copies of EK-LA34S-PS-001
No copies known to be online.
Table of Contents (from EK-LA34S-PS-001)
1
Testing and Troubleshooting
1.1
General
1.1.1
Terminal Troubleshooting
1.1.2
Option Troubleshooting
1.2
Terminal Status Messages
1.2.1
KSR Terminal Status Messages
1.2.2
RO Printer Status Message
1.3
KSR Terminal Self-Test
1.3.1
Power-Up Self-Test
1.3.2
Printer Self-Tests
1.4
RO Printer Self-Tests
1.4.1
Power-Up Self-Test
1.4.2
Printer Self-Tests
1.4.3
Data Loopback Tests -- RO Terminals
2
Mechanical Servicing
2.1
General
2.2
Printer Housing Cover
2.2.1
Printer Housing Cover Removal
2.2.2
Printer Housing Installation
2.3
Platen Clutch/Gear Assembly
2.3.1
Platen Clutch/Gear Assembly Removal
2.3.2
Platen Clutch/Gear Assembly Installation
2.4
Bail Bar Assembly
2.5
Friction Assembly
2.6
Power Supply Assembly
2.7
Printhead Assembly
2.7.1
Printhead Removal
2.7.2
Printhead Installation
2.8
Keyboard/Operator Control Panel Assembly
2.9
Logic Board
2.9.1
Logic Board Installation (LA34/38-AA, XL/XM Terminals and LA34-RA, VA, WA Terminals)
2.10
Printer Mechanism
2.11
Paper Drive Cluster Gear
2.12
Stepper Motor Assembly
2.13
Servo Motor and Encoder Assembly
2.14
Pulley/Tension Assembly
2.15
Timing Belt
2.16
Ribbon Drive Cable
2.17
Carriage Assembly
3
Option Servicing
3.1
General
3.2
LAX34-XL/XM Extended Logic Options
3.2.1
Checkout Procedure
3.2.2
Extended Logic Board Replacement
3.3
LAX34-RL Roll Paper Holder Option
3.3.1
Checkout Procedure
3.3.2
Roll Paper Holder Replacement
3.4
LAX34-AL Tractor Option
3.4.1
Checkout Procedures
3.4.2
Tractor Assembly Replacement
3.5
LAX34-LL Paper Low Detection Option
3.5.1
Checkout Procedure
3.5.2
Paper Low Detection Option Replacement
3.6
LAX34-PL Paper Out Detection Option
3.6.1
Checkout Procedure
3.6.2
Paper Out Detection Option Replacement
3.7
LAX34-CL 20 mA Current Loop Interface Option
3.7.1
Checkout Procedure
3.7.2
20 mA Current Loop Interface
3.8
LAX34-KL Numeric Keypad Option
3.8.1
Checkout Procedure
3.8.2
Numeric Keypad Option Replacement
4
Operating Features Summary
4.1
General
4.2
Communication Switches
4.2.1
Selecting Communication Features
4.3
Featured Control Jumpers
5
Spares
5.1
General