IBM 3274 51C Manuals

Manuals and User Guides for IBM 3274 51C. We have 1 IBM 3274 51C manual available for free PDF download: Maintenance Information

IBM 3274 51C Maintenance Information (358 pages)

Brand: IBM | Category: Control Unit | Size: 14.29 MB

2
Table of Contents
- - 6
    Chapter Introduction 1.1 General
  - 6
    Maintenance Approach
  - 7
    Field Replaceable Unit (FRU) Locations
    - 7
      Machine Model Number
    - 7
      0Ia-Al Logic Board
    - 7
      Card Numbers
    - 7
      Operator Panel
      - 7
        IML Options
      - 8
        Indicators
- 14
  Chapter 2. Subsystem Problem Isolation Procedure
  - 14
    Step 1 Using the Isolation Procedure
  - 14
    Step 2 Power Test
  - 14
    Step 3 Bus Test
  - 15
    Step 4 Internal Tests
    - 15
      Operational Indicators
  - 19
    Control Storage Card Layouts
  - 20
    Step 5 Device Adapters - Driver/Receiver
  - 24
    Step 6 Display Symbols (Category a Only)
  - 27
    Step 8 Host Attachment
  - 27
    Step 9 Voltage Checks
  - 27
    Step 10 Verification Test
  - 27
    Step 11 Last Option
  - 27
    Symptom Repair List
  - 28
    General
    - 28
      MAP A20, Control Logic Failure
    - 38
      Map A40 Diskette Failure
    - 45
      MAP A50, Type a Adapter Failure Code
    - 49
      Map A100 Machine Checkout
    - 63
      Turning
- 81
  Chapter 4. Removal and Replacement Procedures
  - 82
    Machine Access - Cover Removal/Ce Manuals
  - 82
    Machine Access, Cover
  - 83
    Machine Access - Board/Tsr Supply
  - 84
    Card Removal and Replacement
  - 84
    Internal Cable/Connector, Removal and Replacement
  - 85
    Prime Power Box, Removal and Replacement
  - 85
    Prime Power Box
  - 86
    Prime Power Transformer, Removal and Replacement
  - 86
    Prime Power Transformer
  - 87
    Fan Assembly, Removal and Replacement
  - 87
    Fan Assembly
  - 88
    Diode Assembly, Removal and Replacement
  - 89
    Input Filter Capacitor, Removal and Replacement
  - 90
    TSR Power Supply, Removal and Replacement
  - 90
    TSR Power Supply
  - 91
    I/O Panel - Driver/Receiver, Removal and Replacement
  - 91
    I/O Panel, Driver/Receiver Card
  - 92
    Diskette Drive, Removal and Replacement
  - 93
    Line Plate Card, Removal and Replacement
  - 94
    Operator Panel/Indicator Card, Removal and Replacement
    - 94
      Operator Panel/Indicator Card
  - 96
    Operator Panel Switches, Removal and Replacement
  - 97
    Operator Panel Switches
  - 98
    Chapter S. Communications Reference Data
  - 98
    Communications Facilities
    - 98
      3274 Model SIC BSC
    - 98
      3274 Models SIC And 52C Modes/Speeds
    - 98
      Eia
    - 101
      Integrated Modem (1200 Bps)
    - 101
      Integrated Modem (1200 Bps) Wrap
    - 101
      Integrated Modems (2400, 4800, and 9600 Bps)
    - 101
      Loop
    - 101
      Switched
  - 102
    Communications Line Flow, EIA
  - 105
    Communications Line Flow, DDS Adapter
  - 106
    Communications Line Flow, Loop
  - 109
    CBS Data Coupler - U.S. and Canada
  - 110
    Wrap Test
    - 110
      Wrap Test Without Attached Modem
    - 111
      Loop Wrap Test
    - 111
      Loop Indicators
    - 111
      9600-Bps Integrated Modem
    - 111
      Line Attachments
      - 111
        Multipoint Network Operating Speed
- 111
  Chapter 3 . Maintenance Analysis Procedures (Maps)3-1
  - 111
    Point-To-Point Network Operating Speed
  - 112
    Communications Line Flow, 2400-Bps, 4800-Bps, and 9600-Bps Nonswitched Integrated Modems (Model SIC) for U.S., Canada, and World Trade Countries
    - 115
      Signal Quality
    - 115
      Speed Control Backup
    - 115
      Operate Indicator
    - 115
      2400-,4800-, 9600-Bps Integrated Modem Diagnostics
      - 115
        Self-Test/Wrap Test
      - 115
        Integrated Modem Failure
    - 116
      Test Results
      - 119
        ALT2/IML Modem Wrap Test
      - 119
        Test Alarm Card (TAC) Extended Diagnostic
      - 119
        Procedure to Follow if IML Test 0111 Is Flashing
      - 119
        And Canada
      - 119
        Other Countries
    - 119
      Countries
  - 120
    Transmit Level Switch Settings
    - 122
      Board Wiring Options
    - 122
      Card Wiring Options
  - 124
    Top Card Connector Pin Locations
  - 126
    Pluggable ROS Removal Tool
  - 128
    3290 Address Configuration
    - 129
      Configuration Support T
    - 129
      Configuration Support D
  - 130
    Battery Power Supply Check
- 130
  Chapter 6. 3274 Encrypt/Decrypt Feature
  - 130
    Featuredescription
    - 130
      IML Display Indications
    - 130
      Feature Components
    - 130
      Encrypt/Decrypt Failures
  - 131
    Procedure for Encrypt/Decrypt Battery Replacement
  - 132
    Entering the Terminal Master Key
- 133
  Appendix E. 31SD Diskette Drive Maintenancee-L
  - 133
    Verifying the Terminal Master Key
  - 134
    Encrypt/Decrypt Feature Test
- 136
  Appendix F. 5 Ltd Diskette Drive Maintenancef-1
  - 136
    Chapter 7. Response Time Monitor
    - 136
      Feature Description
    - 136
      IML Testing
    - 136
      Microcode Support
- 139
  Appendix A. Locations
  - 139
    Card Connector
    - 139
      Card
    - 145
      Locations
  - 151
    Card Location Chart
  - 155
    Transformer Input and Fan Voltage Wiring
    - 164
      N-Sw and N-Sw-Snbu, U.S. and Canada
    - 164
      SW-AA/MA,'U.S. and Canada
    - 164
      N-Sw, WT Except Canada
    - 168
      N-Sw-Snbu-Aa, WT Except Canada
    - 169
      Sw-Aa, WT Except Canada
  - 186
    Operator Panel
191
Table of Contents
- 192
  General Description
- 192
  Introduction
- 193
  Diskette Description
- 194
  Diskette Insertion and Removal
- 195
  Maintenance
- 196
  Electrical Characteristics
- 196
  Machine Characteristics
- 196
  Physical Characteristics
- 197
  Environmental Characteristics
- 197
  Machine Safety
- 197
  Personal Safety
- 197
  Safety
- 199
  Diskette Drive Parts
- 202
  Control Card Interface
- 202
  Device Theory of Operation
- 204
  Mechanicaloperation
- 204
  Typical Device Operation
- 208
  Read Data
- 211
  Collet/Flat Spring Assembly
- 211
  Collet/Flat Spring Removal
- 211
  Maintenance
- 212
  Collet/Flat Spring Replacement
- 213
  Head/Carriage Assembly
- 213
  Head/Carriage Pressure Pad Removal and
  - 213
    Replacement
- 217
  Head/Carriage Adjustment
- 219
  Head/Carriage Removal
- 219
  Head/Carriage Replacement
- 223
  Head Load Solenoid and Bail
  - 223
    Solenoid and Bail Service Check
  - 225
    Head Gap Service Check
- 225
  Bail Adjustment
  - 227
    Bail Removal
- 225
  Head Gap Adjustment
- 227
  Bail Replacement
  - 227
    Solenoid and Idler Removal
- 227
  Solenoid and Idler Replacement
- 230
  AC Drive Parts
- 230
  Capacitor Removal
  - 230
    Capacitor Replacement
- 230
  Drive Motor Removal
- 230
  Drive Motor Replacement
- 232
  Drive Fan and Pulley Assembly Removal
- 232
  Drive Fan and Pulley Assembly Replacement
  - 232
    Stepper Drive Parts
  - 232
    Stepper Motor Removal
- 232
  Stepper Motor Replacement
- 234
  Drive Band Removal
- 234
  Drive Band Service Check
  - 234
    Drive Band Adjustment
- 234
  Stepper Pulley and Clamp Removal
  - 234
    Stepper Pulley and Clamp Replacement
- 235
  Drive Band Replacement
  - 237
    Diskette Speed Service Check
  - 239
    LED Output Service Check
  - 239
    LED Removal
- 240
  LED Replacement
  - 240
    PTX Amplifier Service Check
  - 242
    PTX Removal
  - 242
    PTX Replacement
  - 242
    Diskette Drive Control Card
  - 242
    Control Card Removal
- 242
  Control Card Replacement
  - 242
    Control Card Test Pins and Connector Pins
  - 303
    Diskette Drive

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IBM 3274 51C Manuals

Manuals and User Guides for IBM 3274 51C. We have 1 IBM 3274 51C manual available for free PDF download: Maintenance Information

IBM 3274 51C Maintenance Information (358 pages)

Table of Contents

2 Table of Contents

14 Chapter 2. Subsystem Problem Isolation Procedure

81 Chapter 4. Removal and Replacement Procedures

111 Chapter 3 . Maintenance Analysis Procedures (Maps)3-1

130 Chapter 6. 3274 Encrypt/Decrypt Feature

133 Appendix E. 31SD Diskette Drive Maintenancee-L

136 Appendix F. 5 Ltd Diskette Drive Maintenancef-1

136 Chapter 7. Response Time Monitor

139 Appendix A. Locations

191 Table of Contents

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2
Table of Contents

14
Chapter 2. Subsystem Problem Isolation Procedure

81
Chapter 4. Removal and Replacement Procedures

111
Chapter 3 . Maintenance Analysis Procedures (Maps)3-1

130
Chapter 6. 3274 Encrypt/Decrypt Feature

133
Appendix E. 31SD Diskette Drive Maintenancee-L

136
Appendix F. 5 Ltd Diskette Drive Maintenancef-1

136
Chapter 7. Response Time Monitor

139
Appendix A. Locations

191
Table of Contents