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Maintenance Manual Removal and Replacement
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4.1 Overview
This section describes the removal and replacement procedures for the basic printer.
Before starting any of these procedures, turn the power switch OFF, and take off the plug
from the wall socket.
Before disassembling the printer, remove the paper in the printer and the inked ribbon
cartridge.
After the covers removal, the power supply cover tool must be installed to prevent any
accidental contact of technician hand with the main heat-sink of the power supply itself if
the printer is powered-on without covers.
REMARK
Caution and Warning in this section highlight specific information.
A CAUTION provides information intended to prevent equipment damage.
A WARNING provides information intended to prevent personal injury.
You must observe anti-static precautions when maintaining this printer.
Disassembly procedure must to be executed from the front side of the printer.
4.2 Recommended Hand Tools and Equipment
The following items should be available for the technicians performing corrective
maintenance on printers:
• Assortment of Philips head and common screwdrivers
• Set of spanners for M3 and M5 nut
• Extractor for chip
• Pliers
• Soldering iron (and soldering wire with flux core)
• A Multimeter for resistance and voltage measurements
• Feeler gauge for print head gap adjustment
• Dynamometer for carriage and motor belts adjustment
• Slender spring hook
• Set of fastener loop self-lock
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LA400 Multiprinter 4. 2 ER-LA400-SV
- Service Manual 1
- Table of Contents 3
- Table of Contents cont'd 4
- Figures cont'd 8
- Chapter 1 9
- General Overview 9
- 1.1 Introduction 10
- 1.2 General Description 11
- 1.2.2 Physical Dimension 13
- 1.2.3 Printer Structure 13
- 1.2.3.1 Mechanical Assy 14
- 1.2.3.1.1 Tractor Unit Assy 14
- 1.2.3.2 Print Head 14
- 1.2.3.3 Cabinet 14
- 1.2.3.4 Electronic Hardware 15
- 1.2.3.6 Mechanical Options 15
- Chapter 2 23
- Paper Handling Overview 23
- 2.1 Introduction 24
- 2.1.2.1 Basic Configuration 27
- 2.1.2.3 ASF Configuration 31
- Chapter 3 32
- Electronic Hardware Overview 32
- 3.1 Hardware General Overview 33
- 3.1.1 Electronic Architecture 34
- 3.1.2 Controller Overview 35
- 3.1.2.1 V55PI µµProcessor 35
- 3.1.2.2 ASIC 39
- 3.1.2.3 Memories 40
- 3.1.2.4 Operator Panel 40
- 3.1.2.6 Expansion Bus 41
- 3.1.3 Mechanical Drivers 41
- 3.1.4 Power Supply Board 49
- 3.1.5 Controller SW Overview 51
- Chapter 4 53
- Removal and Replacement 53
- 4.1 Overview 54
- 4.3 O.R.U. ORDER OF ACCESS 55
- 4.3.1 Front Tractor Group 56
- 4.3.2 Operator Panel Boards 57
- 4.3.3 Print Head 58
- 4.3.4 Front Cover Parts 59
- 4.3.5 Rear Cover Parts 60
- 4.3.6 Serial Interface Board 61
- 4.3.7 Main Board 62
- 4.3.8 Power Supply Board 63
- 4.3.9 Ribbon Motor 64
- 4.3.10 AGA Motor 65
- 4.3.12 Carriage Motor 67
- 4.3.13 Bail Assy 68
- 4.3.14 Cut Sheet Assy 69
- 4.3.15 Upper Feeder Assy 70
- 4.3.16 Platen Assy 71
- 4.3.17 Lower Feeder Assy 72
- 4.3.18 Carriage Assy 74
- 4.3.19 Sensor Assy 75
- 4.3.20 Mechanical Assy 76
- 4.3.21 Paper Motor 77
- 4.3.22 Friction Bar Assy 78
- Chapter 5 79
- Adjustments 79
- 5.1 Overview 80
- 5.1.2 Paper Belt 81
- 5.1.3 Print Head Gap 82
- Chapter 6 84
- Service Maintenance 84
- 6.1 Overview 85
- 6.2 Initial Ispection 85
- 6.2.2 Cleaning 86
- 6.2.3 Paper Specifications 86
- 6.2.4 Consumables 86
- 6.3 Troubleshooting Guide 87
- 6.3.2.1 Status Errors 88
- 6.3.2.2 Recoverable Errors 88
- 6.3.3 Power Malfunctions 91
- 6.3.4 SELF TEST 93
- 6.3.5 HEX DUMP 94
- 6.4.1 Introduction 99
- 6.4.2 Loop-Back Connectors 99
- - FACTORY AUTO GAP: 100
- - PROG. GAP OFFSET: 100
- - Paper sensor tune: 101
- - Carriage test 102
- - Serial I/F test 102
- - Paral. I/F test 102
- - Service Test 103
- Chapter 7 104
- Electromechanical Devices 104
- 7.1 Overview 105
- 7.1.2 Motors 107
- 7.1.2.1 Carriage Motor 107
- 7.1.2.2 Paper Motor 108
- 7.1.2.3 AGA Motor 109
- 7.1.2.4 Ribbon Motor 110
- 7.1.2.5 Alternance Motor 111
- 7.1.2.6 ASF Motor 111
- 7.1.2.7 Color Motor 112
- 7.1.2.8 Stacker Motor 113
- 7.1.3 Cables 114
- 7.1.3.1 Sensors Cable 114
- 7.1.3.2 Alternance Cable 115
- 7.1.3.3 Paper Stacker Cable 115
- Chapter 8 117
- 8.1 Overview 118
- 8.1.1 Automatic Sheet Feeder 118
- 8.1.2 Color Motor 122
- Chapter 9 124
- 9.1 Overview 125
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