Digital Equipment LA50 Dot Matrix Printer Manuals

Manuals and User Guides for Digital Equipment LA50 Dot Matrix Printer. We have 2 Digital Equipment LA50 Dot Matrix Printer manuals available for free PDF download: Technical Manual, Installing And Using

Digital Equipment LA50 Technical Manual

Digital Equipment LA50 Technical Manual (104 pages)

Brand: Digital Equipment | Category: Printer | Size: 2 MB

Table of Contents

Table of Contents
5
Chapter 1 General Description

9
- General
  9
- Physical Description
  9
- LASO Printer
  9
- Functional Description
  10
- ASCII Chart
  10
- Simplified Block Diagram
  11
- Related Documents
  12
Chapter2 Installation

13
- General
  13
- Site Considerations
  13
- Unpacking and Inspection
  14
- Printer Dimensions
  14
- Packing Removal
  16
- Repacking Procedures
  17
- Installation Procedures
  17
- Ribbon Installation
  17
- Paper Installation
  18
- Pinfeed Paper Insertion
  19
- Power up and Checkout
  20
- Single Sheet Paper Insertion
  20
- Interface Cable
  21
- Cable Installation
  21
- Configuration Switches
  22
- National Character Set
  23
- Graphics Aspect Ratio
  23
- Right Margin
  24
- Baud Rate Select
  24
- Data Format
  25
Chapter3 Operator Information

27
- General
  27
- Operator Tests
  27
- Controls and Indicators
  27
- Controls and Indicators
  28
- Self-Test Procedures
  28
- Internal Self-Test
  29
- Carriage Motion Self-Test
  29
- Print Self-Test
  29
- Print Test Pattern
  29
- Loopback Self-Test
  30
- Operator Troubleshooting
  30
- EIA Loopback Connector
  30
Chapter4 Theory

33
- General
  33
- Introduction
  33
- LASO Block Diagram
  34
- Functional Overview
  35
- Description of Functional Areas
  35
- Microprocessor/Control System
  35
- Microprocessor/Control System Logic
  35
- Communications and I/0 Data Processing
  37
- Data Format
  37
- Serial Character Format
  37
- Data Handling in the USART
  38
- Baud Rate Clocks
  39
- Interface Signals
  40
- Printhead Positioning and Printing Process
  41
- Printer Interface Signals
  41
- Printing and Positioning Process
  42
- Paper Advancing
  43
- Paper Feed Subsystem
  43
- Power Supply
  44
- Input Requirements
  44
- Outputs
  44
- Functional Description
  44
- Line Feed Motor Phase Patterns
  44
- Power Supply and Wake-Up Functional Diagram
  45
Chapter 5 Troubleshooting

47
- General
  47
- Troubleshooting
  47
- Physical/Functional Block Diagram
  47
- Self-Tests
  48
- Troubleshooting Tables
  48
- Troubleshooting Checklist
  48
- Carriage Stop Switch
  49
- Printhead Cable
  50
Chapter6 Servicing

53
- General
  53
- Assembly Removal Sequence
  53
- Removal and Replacement Procedures
  54
- Printer Housing
  54
- Paper and Access Covers
  54
- Cover Housing
  54
- Indicator and Switch Assembly
  57
- Bottom Cover
  58
- Operating Voltage Setup
  59
- Printed Circuit Board Connector and Fuse Locations
  59
- Power Supply Connector
  60
- Fuse Replacement
  61
- AC Line Fuse
  61
- PCB Fuses
  62
- Printhead
  63
- Printhead Clamps
  63
- Printhead Cable
  64
- Printhead Removal
  64
- PCB Assembly
  66
- Paper Bail
  66
- Paper Bail
  67
- Platen
  68
- Change-Gear Arm
  69
- Carriage Assembly
  69
- Ribbon Wire
  70
- Assembly- RB, RC
  71
- Paper-Out, Access Cover Interlock and Carriage Sensor Switch Assembly-RA, Rd/Paper-Out and Carriage Sensor Switch Assembly-RB, RC
  72
- Tractor Assembly
  73
- Carriage Wire
  74
- Carriage Drive Assembly
  74
- Carriage Motor
  75
- Carriage Retainer
  75
- Carriage Wire Installation
  76
- Carriage Motor
  77
- Carriage Wire Tension Adjustment
  77
- Line Feed Motor
  78
- Line Feed Motor Replacement
  78
- Power Transformer, Power Switch, and Noise Filter
  79
- Paper Thickness Lever
  80
- Transistor or Carriage Transistor Assembly
  81
- Lubrication
  82
- Platen
  82
- Lubrication Guide
  82
- Lubrication Locations
  83
- Rb, Rc
  85

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Digital Equipment LA50 Installing And Using

Digital Equipment LA50 Installing And Using (42 pages)

Brand: Digital Equipment | Category: Printer | Size: 0 MB

Table of Contents

Table of Contents
5
Introduction
6
Installing Printer
7
Inserting Paper
11
- Inserting Pinfeed Paper
  11
- Inserting Single Sheet Paper
  16
Self-Test Procedure
18
Installing System Cable
20
Front Panel Indicators and Switches
21
Printer Controls
22
Maintaining Printer
23
Troubleshooting Printer
24
- Operator Checklist
  24
- Replacing Printhead
  26
- Replacing Fuse
  30
Printer Configuration
32
- Configuration Switches
  32
- National Character Set Switches
  34
- Graphics Aspect Ratio Switch
  35
- XON/XOFF and Ready/Busy Protocol Switches
  35
- Right Margin Switch
  36
- Baud Rate Select Switches
  36
- Data Format Switches
  37
Specifications
38
Field Service Information
40

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