IBM 5256-2 Manuals

Manuals and User Guides for IBM 5256-2. We have 1 IBM 5256-2 manual available for free PDF download: Maintenance Information Manual

IBM 5256-2 Maintenance Information Manual

IBM 5256-2 Maintenance Information Manual (190 pages)

Brand: IBM | Category: Printer | Size: 7.4 MB

Table of Contents

Safety
5
Table of Contents
7
Glossary of Terms and Abbreviations
12
Legend
15
Using the Ibm 5256 Maintenance Information Manual
16
- Glossary of Terms and Abbreviations
  16
- Maintenance
  16
- Wiring Diagram
  16
- Diagnostic Aids
  16
- Preventive Maintenance
  16
- Tools and Test Equipment
  16
- Theory
  16
- Features
  17
- Appendix A . Index
  17
Maintenance
18
Sequence-Affected Procedures
18
Locations
19
Front and Right Side Locations
19
Front and Left Side Locations
20
Back Locations
21
Printer Mechanism Bottom Locations (Print Mechanism in Service Position)
22
Printer Mechanism Base Locations
23
Power Supply Board a 1 Locations and Jumpers
24
Planar Board Bl Locations and Jumpers
25
Cabling Locations and Station Protector
27
- Motor Cables (EC2 to Tpbl and TPB2)
  27
Cover
29
Printer Covers
29
Control Panel and AC Cable Assembly
30
- Control Panel Removal and Replacement
  30
- AC Cable Assembly Removal and Replacement
  30
Service Positions
31
Separating the Printer from the Power Supply Board A1 for Service Positions
31
Moving the Power Supply for Printer Servicing
33
Part Numbers
33
Forms Moving Parts
34
Platen and Paper Deflector
34
- Removal and Replacement
  34
Platen Latches (Release Eccentrics and Springs)
35
- Adjustment
  35
Platen Gears and Bushing
35
- Removal, Replacement, and Adjustment
  35
Platen Pressure Rolls
36
- Adjustment
  36
Platen Gear Backlash (Play)
37
- Adjustment
  37
Forms Motor Gear Backlash (Play)
38
- Adjustment
  38
Forms Motor and Emitter
40
- Removal and Replacement
  40
- Disassembly
  41
- Assembly
  41
Forms Feed Emitter Disk
42
- Adjustment
  42
Forms Motor to Emitter Timing
43
- Service Check
  43
- Adjustment
  44
Frame
46
- Service Check
  46
- Alignment
  46
End-Of-Forms Switch
47
- Service Check
  47
- Adjustment
  47
- Removal and Replacement
  47
Forms Tractor Unit
49
- Removal and Replacement
  49
- Disassembly and Assembly
  49
- Left Tractor Acljustment
  50
Forms Tractor Unit Chain Cover
50
- Service Check
  50
- Adjustment
  50
Forms Tractor Unit Chain
52
- Removal and Replacement
  52
Forms Guide Rack Static Eliminator Replacement
52
Printer Emitter
53
Print Emitter Board to Pickup and Amplifier Card
53
Print Emitter Board
55
- Removal and Replacement
  55
Print Emitter Hold down Bracket
55
- Adjustment
  55
Left Margin
55
- Service Check
  55
Carrier
57
Carrier Main and Support Shafts
57
- Service Check
  57
- Adjustment
  57
Carrier Support Shaft
58
- Removal and Replacement
  58
Carrier and Main Shaft
58
Belt Tensioner Assembly
59
- Removal and Replacement
  59
Carrier Motor and Pulley
60
- Removal and Replacement
  60
Carrier Leaf Spring and Bearing
60
- Print Head
  61
  - Service Check
    61
  - Adjustment
    61
  - Removal and Replacement
    61
- Print Head Forms Guide
  62
  - Adjustment
    62
  - Removal and Replacement
    62
- Print Head Cable (EC1)
  63
  - Removal
    63
  - Replacement
    64
- Oil Felt Service
  65
  - Print Head Ribbon Lifter
    65
  - Print Head Ribbon Shield
    66
    
    Copy Control Dial
    68
- Print Head Retract Ramp
  68
  - Adjustment
    68
  - Removal and Replacement
    68
- Ribbon Drive Clutches
  69
  - Removal and Replacement
    69
- Ribbon Drive Shaft
  69
- Ribbon Drive Lines
  69
- Ribbon Feed Rolls
  71
  - Service Check
    71
  - Adjustment
    71
  - Removal and Replacement
    71
- Ribbon Drive Gears
  71
Ribbon Box and Cover
71
- Ribbon Changing
  72
Power and Electronics
74
- Power Supply
  74
  - Removal and Replacement
    74
  - Ripple Level Check
    74
    
    Power Transformer
    75
- Fans
  77
  - Fan B1 Removal and Replacement
    77
  - Fan B2 Removal and Replacement
    77
- TB2 and Line Filter
  77
  - TB2 Removal and Replacement
    77
  - Line Filter Removal and Replacement
    77
- Power Adapter Board C1 and Capacitor Assembly
  79
  - Capacitor Service Check
    79
  - Removal and Replacement
    79
- AC Capacitor (C12) and Capacitor C3
  80
  - C12 Removal and Replacement
    80
  - C3 Removal and Replacement
    80
- Power Supply Board A1 and Cable
  81
  - Removal and Replacement
    81
- Transistor (Q1)
  82
  - Service Check
    82
  - Removal and Replacement
    82
- Planar Board B1
  84
  - Removal and Replacement
    84
- Printer Wiring Diagram
  85
Diagnostic Aids
87
Power on Diagnostic
87
Offline Tests
91
- Print Test (PRT04)
  91
- Carrier Motor (PRT05)
  92
- Forms Motor (PRT06)
  92
- Alignment (PRT07)
  92
- Print Character Set (PRT08)
  93
- Print Receive Buffers (PRT09)
  94
- Left Margin Recognition (PRT10)
  94
- Printer Characteristics Display (PRT11)
  94
- Data Storage (PRT12)
  95
- Address Switches (PRT13)
  95
- Set Transparent Mode (PRT14)
  95
- Print Wiresltab (PRT15)
  96
Online Tests
97
- Online Tests Overview
  98
- Matrix Printer Verification Test (Online Exerciser)
  99
- Matrix Printer Verification Test Printout
  103
- Error Codes and Descriptions
  106
- Lights
  107
Print Quality and Registration Problems
111
- Print Quality Problem Examples
  111
- Registration Problem Examples
  112
Probe, Probing Information, and Interposer Check
113
- Probe Setup and Accessories
  113
- Probe Power
  113
- Probe Test
  113
- Probe Light Conditions
  113
- Probing EC1, EC2, and C1A 1
  113
- Continuity Check for Interposers
  114
- Removing Wire from Plugs P2, P3, P4, and P5
  114
Preventive Maintenance
116
Theory
122
Introduction
122
Printer Operation Overview and Data Flow
123
System Configuration
126
Cable Adapter
127
Frame Concept
127
Transmission Sequences
128
Commands
129
- Poll Response Frames
  130
- Read Status Response Frame
  131
- Printer SCS Formatting Control Characters
  132
- Set Graphic Error Action Summary
  133
- Set Horizontal Format Summary
  133
- Set Vertical Format Summary
  134
- Interface
  134
- Poll for Status
  134
- Write Data
  134
- Data Transfer
  135
Microprocessing Unit
136
- Read/Write Storage
  136
- Internal Processing Queues
  136
Control Panel and CE Lights
138
- Sense Latches
  138
Print Emitter Control and Print Timings
139
Power and Signal Distribution
141
Power on and Power off Timings
141
Functional Parts
144
- Motors
  144
- Print Head
  146
- Carrier
  148
- Print Emiiter and Print Emitter Pickup
  155
- Ribbon Drive
  157
- Forms Feed
  158
- Forms Tractor Unit
  162
Features
164
Cable Thru
164
Audible Alarm
165
SECTION 1. Standalone Checkout
167
Cable Thru Feature
172
Section 2. Connecting to the System
173
Problem Check List
176

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