IBM PC/2 Series Hardware Maintenance Reference
IBM PC/2 Series Hardware Maintenance Reference

IBM PC/2 Series Hardware Maintenance Reference

Diagnostics for micro channel

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IBM HMR Diagnostics for Micro Channel
FRONT
PICTURE 1
Part Number 15F2245
Form Number S64F-3984-01
October 30, 1990
¦ Copyright IBM Corp. 1990
FRONT - 1

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Summary of Contents for IBM PC/2 Series

  • Page 1 IBM HMR Diagnostics for Micro Channel FRONT PICTURE 1 Part Number 15F2245 Form Number S64F-3984-01 October 30, 1990 ¦ Copyright IBM Corp. 1990 FRONT - 1...
  • Page 2: Safety Information

    Such references or information must not be construed to mean that IBM intends to announce such IBM products, programming, or services in your country. Requests for technical information about IBM products should be made to your IBM Authorized Dealer or your IBM Marketing Representative.
  • Page 3: Special Notices

    Special Notices FRONT_2 Special Notices References in this publication to IBM products, programs, or services do not imply that IBM intends to make these available in all countries in which IBM operates. Any reference to an IBM product, program or service is not intended to state or imply that only IBM's product, program, or service may be used.
  • Page 4: Table Of Contents

    IBM HMR Diagnostics for Micro Channel Table of Contents CONTENTS Table of Contents FRONT_1 Safety Information FRONT_2 Special Notices CONTENTS Table of Contents Introduction to Diagnostic Tests Diagnostic Procedures Diagnostic Aids (All models) Reference-Diskette-Based Diagnostic Tests Power-On Self-Test (POST) Advanced Diagnostic Tests 2.2.1...
  • Page 5: Introduction To Diagnostic Tests

    IBM HMR Diagnostics for Micro Channel Introduction to Diagnostic Tests 1.0 Introduction to Diagnostic Tests This pamphlet provides diagnostic information for IBM (*) Personal System/2 (*) Micro Channel (*) computers. Subtopics 1.1 Diagnostic Procedures 1.2 Diagnostic Aids (All models) ¦ Copyright IBM Corp. 1990...
  • Page 6: Reference-Diskette-Based Diagnostic Tests

    IBM HMR Diagnostics for Micro Channel Diagnostic Procedures 1.1 Diagnostic Procedures Advanced diagnostic programs are run in either of two ways: From the Reference Diskette From the fixed disk drive If you are not sure if the system being serviced has fixed disk based or Reference-Diskette-based diagnostics, refer to the Hardware Maintenance Reference manual for the system you are servicing.
  • Page 7 IBM HMR Diagnostics for Micro Channel Diagnostic Aids (All models) 1.2 Diagnostic Aids (All models) The diagnostic aids used to isolate a failing field replaceable unit (FRU) are: Power-On Self-Test (POST) Advanced diagnostic tests on the Reference Diskette Hardware Maintenance Service pamphlets.
  • Page 8 2.0 Reference-Diskette-Based Diagnostic Tests This section provides information about Personal System/2 computers that run the diagnostic programs from the Reference Diskette. The Reference Diskette is model specific and comes with the IBM Personal System/2 Hardware Maintenance Service manual. It is permanently write protected.
  • Page 9 Two choices are available: normal (15 cps) and fast (30 cps). Copy an option diskette is used when an IBM option comes with a diskette and instructions to update the backup copy of the Reference Diskette. The option diskette contains the testing program and configuration information for the option.
  • Page 10: Power-On Self-Test (Post)

    IBM HMR Diagnostics for Micro Channel Power-On Self-Test (POST) 2.1 Power-On Self-Test (POST) The power-on self-test (POST) is a series of system tests that verify the correct operation of the base system and most options. The POST runs each time the system is powered-on.
  • Page 11: Advanced Diagnostic Tests

    IBM HMR Diagnostics for Micro Channel Advanced Diagnostic Tests 2.2 Advanced Diagnostic Tests The advanced diagnostic tests are on the Reference Diskette, which is located in the Hardware Maintenance Service manual. The Reference Diskette and Hardware Maintenance Service manual are used to isolate failing FRUs.
  • Page 12: Starting The Advanced Diagnostic Tests

    IBM HMR Diagnostics for Micro Channel Starting the Advanced Diagnostic Tests. 2.2.1 Starting the Advanced Diagnostic Tests. Insert the Reference Diskette into diskette drive A. Power on the system. Follow the instructions on the screen until the Main Menu appears.
  • Page 13: Diagnostic Program

    IBM HMR Diagnostics for Micro Channel Diagnostic Program 2.2.2 Diagnostic Program The diagnostic program consists of a diagnostic control program (DCP) and a module of code for each device that is supported by the system. As new options are developed, modules of code are distributed as supplements and must be copied to the Reference Diskette.
  • Page 14: Presence Test

    IBM HMR Diagnostics for Micro Channel Presence Test 2.2.3 Presence Test During the initial program load, the DCP links, in sequence, to each of the modules on the Reference Diskette and performs a presence test for the device supported by each module.
  • Page 15: Installed Devices List

    IBM HMR Diagnostics for Micro Channel Installed Devices List 2.2.4 Installed Devices List This list contains the devices that met all the conditions described in "Presence Test." The servicer must verify this list. An incorrect installed devices list can be caused by: The module of code for a device is not on the Reference Diskette.
  • Page 16: System Checkout

    IBM HMR Diagnostics for Micro Channel System Checkout 2.2.5 System Checkout Run System Checkout when a problem occurs, after a new option is installed, or after maintenance work is done on the system. To run System Checkout: Start the advanced diagnostic tests.
  • Page 17: Error Log

    IBM HMR Diagnostics for Micro Channel Error Log 2.2.6 Error Log The following steps allow you to create an Error Log, start the advanced diagnostic tests, select System Checkout, and automatically record error messages in the Error Log. This procedure is normally used when diagnosing an intermittent problem or exercising the system.
  • Page 18: Formatting A Fixed Disk Drive

    IBM HMR Diagnostics for Micro Channel Formatting a Fixed Disk Drive 2.2.7 Formatting a Fixed Disk Drive Warning: Formatting results in a complete loss of data on the fixed disk drive; have the user refer to the operating system manual and back up all information before formatting.
  • Page 19: Preparing A Fixed Disk Drive For Moving

    IBM HMR Diagnostics for Micro Channel Preparing a Fixed Disk Drive for Moving 2.2.8 Preparing a Fixed Disk Drive for Moving Before moving the system unit or removing the fixed disk drive for service, select Move the computer from the Main Menu on the Reference Diskette.
  • Page 20: Fixed-Disk-Based Diagnostic Tests

    IBM HMR Diagnostics for Micro Channel Fixed-Disk-Based Diagnostic Tests 3.0 Fixed-Disk-Based Diagnostic Tests Subtopics 3.1 System Utility Programs 3.2 Selectable Startup 3.3 Example One 3.4 Example Two 3.5 Power-On Self-Test (POST) 3.6 Advanced Diagnostic Tests ¦ Copyright IBM Corp. 1990...
  • Page 21 IBM HMR Diagnostics for Micro Channel System Utility Programs 3.1 System Utility Programs This section provides information about Personal System/2 computers that run the diagnostic programs from the fixed disk drive. The utility programs and the diagnostic programs (customer and service) are stored on both the fixed disk drive and the Reference Diskette;...
  • Page 22 Copy an option diskette is used when an IBM option comes with a diskette and instructions to update the backup copy of the Reference Diskette.
  • Page 23 IBM HMR Diagnostics for Micro Channel Selectable Startup 3.2 Selectable Startup The Selectable Startup function allows the user to control the startup sequence (path) of the system. After the path is changed, the letters of the drive designations also change as shown in the following two examples.
  • Page 24 IBM HMR Diagnostics for Micro Channel Example One 3.3 Example One This example shows how the user can change the order of the drive sequence. The user can select a sequence of up to four drives, including diskette drives or fixed disk drives.
  • Page 25 IBM HMR Diagnostics for Micro Channel Example Two 3.4 Example Two This example shows how the system temporarily rearranges the drive letter designation when an operating system is started from one of the diskette drives in the selected startup sequence.
  • Page 26: Power-On Self-Test (Post)

    IBM HMR Diagnostics for Micro Channel Power-On Self-Test (POST) 3.5 Power-On Self-Test (POST) The power-on self-test (POST) is a series of system tests that verify the correct operation of the base system and most options. The POST runs each time the system is powered-on.
  • Page 27: Advanced Diagnostic Tests

    IBM HMR Diagnostics for Micro Channel Advanced Diagnostic Tests 3.6 Advanced Diagnostic Tests The advanced diagnostic tests, along with the problem-isolation procedures in the Hardware Maintenance Service pamphlet, are used to isolate failing FRUs. Subtopics 3.6.1 Starting the Advanced Diagnostic Tests 3.6.2 Diagnostic Program...
  • Page 28: Starting The Advanced Diagnostic Tests

    IBM HMR Diagnostics for Micro Channel Starting the Advanced Diagnostic Tests 3.6.1 Starting the Advanced Diagnostic Tests The advanced diagnostic tests are started from the Main Menu of the System Utility programs. Three ways to gain access to the System Utilities Main...
  • Page 29: Diagnostic Program

    IBM HMR Diagnostics for Micro Channel Diagnostic Program 3.6.2 Diagnostic Program The diagnostic program consists of a diagnostic control program (DCP) and a module of code for each device that is supported by the system. As new options are developed, modules of code are distributed as supplements and must be copied to the fixed disk drive and the backup copy of the Reference Diskette.
  • Page 30: Presence Test

    IBM HMR Diagnostics for Micro Channel Presence Test 3.6.3 Presence Test During the initial program load, the DCP links, in sequence, to each module of code and performs a presence test for the device supported by each device module. For a successful presence test, the following...
  • Page 31: Installed Devices List

    IBM HMR Diagnostics for Micro Channel Installed Devices List 3.6.4 Installed Devices List This list contains the devices that met all the conditions described in "Presence Test." The servicer must verify this list. An incorrect Installed Devices list can be caused by: The module of code for a device is not on the fixed disk drive.
  • Page 32: System Checkout

    IBM HMR Diagnostics for Micro Channel System Checkout 3.6.5 System Checkout Run System Checkout when a problem occurs, after a new option is installed, or after maintenance work is done on the system. To run System Checkout: Start the advanced diagnostic tests.
  • Page 33: Error Log

    IBM HMR Diagnostics for Micro Channel Error Log 3.6.6 Error Log The following steps allow you to create an Error Log, start the advanced diagnostic tests, select System Checkout, and automatically record error messages in the Error Log. This procedure is normally used when diagnosing an intermittent problem or exercising the system.
  • Page 34: Formatting A Fixed Disk Drive

    IBM HMR Diagnostics for Micro Channel Formatting a Fixed Disk Drive 3.6.7 Formatting a Fixed Disk Drive Warning: Formatting results in a loss of data on the fixed disk drive; have the user refer to the operating system manual and back up all information before formatting.
  • Page 35: Relocating The System

    IBM HMR Diagnostics for Micro Channel Relocating The System. 3.6.8 Relocating The System. The fixed disk drives automatically position the read/write heads in nondata areas when the system is powered-off. ¦ Copyright IBM Corp. 1990 3.6.8 - 1...
  • Page 36: Hardware Maintenance Service Pamphlet (All Models)

    4.0 Hardware Maintenance Service Pamphlet (All models) The Hardware Maintenance Service pamphlets and the Reference Diskettes are located in the IBM Personal System/2 Hardware Maintenance Service manual, or on some models, they are located under the system cover. The pamphlets are the only printed information needed to service a system.

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