Digital Equipment LA400 Manuals

Manuals and User Guides for Digital Equipment LA400. We have 1 Digital Equipment LA400 manual available for free PDF download: Service Manual

Digital Equipment LA400 Service Manual

Digital Equipment LA400 Service Manual (127 pages)

Brand: Digital Equipment | Category: All in One Printer | Size: 3 MB

Table of Contents

Table of Contents
3
Chapter 1 General Overview

9
- Introduction
  10
  - Scope of the Products
    10
  - Printers Features Summary
    10
- General Description
  11
  - Physical Overview
    11
  - Basic Printer Parts Location (Front View)
    11
  - Basic Printer Parts Location (Rear View)
    12
  - Physical Dimension
    13
  - Printer Structure
    13
  - Mechanical Assy
    14
    
    Cabinet
    14
    
    Print Head
    14
    
    Tractor Unit Assy
    14
    
    Electronic Hardware
    15
    
    Inked Ribbon Cartridge
    15
    
    Mechanical Options
    15
Chapter 2 Paper Handling Overview

23
- Introduction
  24
  - Paper Handling Architecture
    24
  - Paper Handling Architecture
    26
  - Paper Path Configurations
    27
  - Basic Configuration
    27
  - Front Load Push-Mode
    28
  - Rear (Bottom) Load Pull-Mode
    29
  - Dual Fanfold Configurations
    30
  - ASF Configuration
    31
Chapter 3 Electronic Hardware Overview

32
- Hardware General Overview
  33
  - Electronic Architecture
    34
  - Controller Overview
    35
  - V55PI Μprocessor
    35
    
    Microprocessor Internal Block Diagram
    36
    
    V55PI Internal Block Architecture
    36
    
    V55PI Block Features
    37
    
    Asic
    39
    
    Memories
    40
    
    Operator Panel
    40
    
    Serial Interface Board
    40
    
    Expansion Bus
    41
    
    Mechanical Drivers
    41
    
    DOE Block Features
    42
    
    Reset and Prefault Circuit
    42
    
    Print Head Needle Current Waveforms
    48
    
    Power Supply Board
    49
    
    Power Supply Major Block Diagram
    50
    
    Controller SW Overview
    51
    
    Software Architecture
    52
Chapter 4 Removal and Replacement

53
- Overview
  54
- Recommended Hand Tools and Equipment
  54
  - AGA Motor
    55
  - AGA Support and T/F Lever
    55
  - Bail Assy
    55
  - Cut Sheet Assy
    55
  - Front Cover Parts
    55
  - Operator Panel Boards
    55
  - Power Supply Board
    55
  - Rear Cover Parts
    55
  - Ribbon Motor
    55
  - Upper Feeder Assy
    55
  - Operator Panel Boards
    57
  - Print Head
    58
  - Front Cover Parts
    59
  - Rear Cover Parts
    60
  - Serial Interface Board
    61
  - Main Board
    62
  - Power Supply Board
    63
  - Ribbon Motor
    64
  - AGA Motor
    65
  - AGA Support and T/F Lever
    66
  - Carriage Motor
    67
  - Bail Assy
    68
  - Cut Sheet Assy
    69
  - Upper Feeder Assy
    70
  - Platen Assy
    71
  - Lower Feeder Assy
    72
  - Carriage Assy
    74
  - Sensor Assy
    75
  - Mechanical Assy
    76
  - Paper Motor
    77
  - Friction Bar Assy
    78
Chapter 5 Adjustments

79
- Overview
  80
  - Carriage Belt
    80
  - Paper Belt
    81
  - Print Head Gap
    82
  - Print Head Adjustment
    83
Chapter 6 Service Maintenance

84
- Overview
  85
- Initial Ispection
  85
  - Set-Up
    85
  - Cleaning
    86
  - Paper Specifications
    86
  - Consumables
    86
- Troubleshooting Guide
  87
  - Initializing Phase
    87
  - Printer Errors
    87
  - Status Errors
    88
  - Recoverable Errors
    88
  - Not Recoverable Errors
    89
    
    Unrecoverable Error Display Messages
    90
    
    Power Malfunctions
    91
    
    Troubleshooting Guide
    91
    
    Self-Test
    93
    
    Self-Test Printout
    93
    
    Hex-Dump
    94
    
    Faulty Probability Guide
    95
- Service Tests and Adjustments
  99
  - Introduction
    99
  - Execution of the Service Adjustments
    100
  - Execution of the Service Tests
    102
  - Service Test
    103
  - Print Head
    105
  - Print Head Pinout
    106
  - Carriage Motor
    107
  - Carriage Motor Pin Connector Assignment
    107
  - Motors
    107
  - Paper Motor Pin Connector Assignment
    108
  - AGA Motor Pin Connector Assignment
    109
  - Ribbon Motor Pin Connector Assignment
    110
  - Alternance Motor
    111
  - Color Motor Pin Connector Assignment
    112
  - Stacker Motor Pin Connector Assignment
    113
  - Sensors Cable
    114
  - Alternance Cable
    115
  - Paper Stacker Cable
    115
  - Operator Panel Cable
    116
  - Automatic Sheet Feeder
    118
  - ASF and Stacker Blocks Diagram
    119
  - ASF Installation (Rear View)
    120
  - Second bin ASF Installation
    121
  - Color Motor Installation
    122
  - Color Ribbon Installation
    123
  - Serial Interface Board
    125
  - Main Board
    125
  - Hardware Setting
    125

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