1. Manuals
  2. Brands
  3. IBM Manuals
  4. Desktop
  5. PS/2 25 SX
  6. Hardware maintenance reference

IBM PS/2 25 SX Hardware Maintenance Reference

Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
IBM PS/2 Model 25 SX HMR
FRONT
PICTURE 1
March 10, 1992
This pamphlet contains a Symptom-to-FRU Index, a parts listing, and
procedures for isolating problems to a FRU for the IBM Personal System/2
Model 25 SX.
This pamphlet is intended to be used with the IBM Personal System/2
Hardware Maintenance Reference manual (part number 15F2190, form number
SBOF-3989-0) , and the Hardware Maintenance Service manual (part number
15F2200, form number SBOF-3988-0).
Part Number 10G6610
Form Number S10G-6610-00
¦ Copyright IBM Corp. 1992
FRONT - 1

Advertisement

Table of Contents
loading

Related Manuals for IBM PS/2 25 SX

Summary of Contents for IBM PS/2 25 SX

  • Page 1 March 10, 1992 This pamphlet contains a Symptom-to-FRU Index, a parts listing, and procedures for isolating problems to a FRU for the IBM Personal System/2 Model 25 SX. This pamphlet is intended to be used with the IBM Personal System/2...

  • 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: Notices

    Notices FRONT_2 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: General Ibm Electro-Static Discharge (Esd) Instructions

    IBM PS/2 Model 25 SX HMR General IBM Electro-Static Discharge (ESD) Instructions FRONT_2.1 General IBM Electro-Static Discharge (ESD) Instructions These are general instructions for handling ESD sensitive parts. Any part containing transistors or ICs should be considered ESD Sensitive. product specific ESD procedures when they exceed the requirements noted here.

  • Page 5: Table Of Contents

    IBM PS/2 Model 25 SX HMR Table of Contents CONTENTS Table of Contents FRONT_1 Safety Information FRONT_2 Notices FRONT_2.1 General IBM Electro-Static Discharge (ESD) Instructions CONTENTS Table of Contents General Checkout How to Diagnose Combined FRUs How to Use Error Messages...

  • Page 6: General Checkout

    IBM PS/2 Model 25 SX HMR General Checkout 1.0 General Checkout The diagnostic tests are intended to test only IBM* products. Non-IBM products, prototype cards, or modified options can give false errors and invalid system responses. (*) Trademark of the International Business Machines Corporation.
  • Page 7 IBM PS/2 Model 25 SX HMR How to Diagnose Combined FRUs 1.1 How to Diagnose Combined FRUs If an adapter or device consists of more than one FRU, an error code may be caused by any of the FRUs. Before replacing the adapter or device, remove the FRUs, one by one, to see if the symptoms change.
  • Page 8 IBM PS/2 Model 25 SX HMR How to Use Error Messages 1.2 How to Use Error Messages Use the error codes displayed on the screen to diagnose failures. If more than one error code is displayed, diagnose the first error code first.
  • Page 9 IBM PS/2 Model 25 SX HMR How to Disable the Power-on Password 1.3 How to Disable the Power-on Password To disable the power-on password, move the J2 jumper on the system board to the unused position. Refer to the Model 25 SX Hardware Maintenance Reference for the location of the J2 jumper on the system board.
  • Page 10 IBM PS/2 Model 25 SX HMR How to Disable the Power-on Password - Insert your advanced diagnostics diskette. - Press Ctrl+Alt+Del and check for the following responses: One or two short beeps. IBM logo screen appears. DID YOU RECEIVE BOTH RESPONSES? ¦...

  • Page 11: Undetermined Problem

    IBM PS/2 Model 25 SX HMR Undetermined Problem 2.0 Undetermined Problem Check the power supply voltages (see "Power Supply Voltages" in topic 3.0). If the voltages are correct, return here and continue with the following steps: Power-off the system. Remove or disconnect the following, one at a time:...

  • Page 12: Power Supply Voltages

    IBM PS/2 Model 25 SX HMR Power Supply Voltages 3.0 Power Supply Voltages If the power-on indicator is not on, or if the power-supply fan is not running, check the power cord for proper installation and continuity. Verify that the voltage-selector switch is set for the correct voltage.

  • Page 13: Display

    IBM PS/2 Model 25 SX HMR Display 4.0 Display If the screen is rolling, replace the display assembly. If that does not correct the problem, replace the system board. If the screen is not rolling, do the following to run the display self-test: Power-off the system.

  • Page 14: Installed Devices List

    IBM PS/2 Model 25 SX HMR Installed Devices List 5.0 Installed Devices List Warning: A customized setup configuration (other than default settings) may exist on the system you are servicing. Running Automatic Configuration may alter those settings. Note the current configuration settings (using the View Configuration option) and verify that the settings are in place when service is complete.

  • Page 15: Keyboard

    IBM PS/2 Model 25 SX HMR Keyboard 6.0 Keyboard Note: If a mouse or other pointing device is attached, remove it and see if the error symptom goes away. If the symptom goes away, the mouse or pointing device is defective.

  • Page 16: Printer

    IBM PS/2 Model 25 SX HMR Printer 7.0 Printer Make sure the printer is properly connected and powered-on. Run the printer self-test. If the printer self-test does not run correctly, the problem is in the printer. Refer to the printer service manual.

  • Page 17: Memory

    IBM PS/2 Model 25 SX HMR Memory 8.0 Memory +---+ ¦001¦ +---+ - Power-off the system. - Insert the advanced diagnostics diskette into drive A. - Power-on the system. - Make a note of any POST errors you receive. Disregard 164 errors (memory size).

  • Page 18: Hard Disk Drive Jumper Settings

    IBM PS/2 Model 25 SX HMR Hard Disk Drive Jumper Settings 9.0 Hard Disk Drive Jumper Settings The hard disk drive must be set as the primary drive. To set the jumpers, turn the drive upside down, with the connector facing away from you.
  • Page 19 IBM PS/2 Model 25 SX HMR 40MB or 80MB Hard Disk Drive 9.1 40MB or 80MB Hard Disk Drive PICTURE 4 ¦ Copyright IBM Corp. 1992 9.1 - 1...

  • Page 20: Token-Ring Data Rate Switch Settings

    IBM PS/2 Model 25 SX HMR Token-Ring Data Rate Switch Settings 10.0 Token-Ring Data Rate Switch Settings Switch 12 on the switch block indicates the rate (4 Mbps or 16 Mbps) at which the adapter transfers data to the network.

  • Page 21: Testing The Ethernet Adapter

    IBM PS/2 Model 25 SX HMR Testing the Ethernet Adapter 11.0 Testing the Ethernet Adapter To test the Ethernet adapter: Insert the feature diskette in the diskette drive, then power-on the system. The Ethernet Setup/Diagnostic program will automatically load. Note:...
  • Page 22 IBM PS/2 Model 25 SX HMR RPL Error Conditions for Ethernet 11.1 RPL Error Conditions for Ethernet The following is a list of possible error conditions that can occur when the workstation is attempting to connect to the network: +------------------------------------------------------------------------+ ¦...

  • Page 23: Testing The Token-Ring Adapter

    IBM PS/2 Model 25 SX HMR Testing the Token-Ring Adapter 12.0 Testing the Token-Ring Adapter To test the Token-Ring adapter: Insert the feature diskette in the diskette drive, then power-on the system. The Token-Ring Setup/Diagnostic program will automatically load. Note:...
  • Page 24 IBM PS/2 Model 25 SX HMR Testing the Token-Ring Adapter ¦ highlighted ¦ If the code is 0011 or 002D ¦ ¦ ¦ and the field is flashing: ¦ ¦ ¦ Ensure that all cables ¦ ¦ ¦ and cords are properly ¦...
  • Page 25 IBM PS/2 Model 25 SX HMR Testing the Token-Ring Adapter ¦ ¦ ring. Ensure that the ¦ ¦ ¦ correct adapter address was ¦ ¦ ¦ added to the network ¦ ¦ ¦ software. If the above item ¦ ¦...

  • Page 27: Symptom-To-Fru Index

    If you are unable to correct the problem using this index, go to "Undetermined Problem" in topic 2.0. Warning: Follow "General IBM Electro-Static Discharge (ESD) Instructions" in topic FRONT_2.1 before touching system boards, adapters, math coprocessors, memory module kits, diskette drives, or hard disk drives.
  • Page 28 IBM PS/2 Model 25 SX HMR Symptom-to-FRU Index ¦ error-type message with a ¦ System Board ¦ ¦ known-good diagnostic diskette ¦ Diskette Drive Cable ¦ +------------------------------------+-----------------------------------¦ ¦ Incorrect memory size ¦ See "Memory" in topic 8.0. ¦ ¦ during POST ¦...
  • Page 29 IBM PS/2 Model 25 SX HMR Symptom-to-FRU Index ¦ 663 ¦ Wrong media type ¦ +------------------------------------+-----------------------------------¦ ¦ 6XX ¦ Diskette Drive ¦ ¦ (not listed above) ¦ System Board or ¦ ¦ ¦ External Drive Adapter ¦ ¦ ¦ Diskette Drive Cable ¦...
  • Page 30 IBM PS/2 Model 25 SX HMR Symptom-to-FRU Index -------------------------------------------------------------------------- -------------------------------------------------------------------------- -------------------------------------------------------------------------- -------------------------------------------------------------------------- ¦ Copyright IBM Corp. 1992 13.0 - 4...

  • Page 31: Parts

    IBM PS/2 Model 25 SX HMR Parts 14.0 Parts This section contains a graphic overview and a parts catalog for the Model 25 SX. Subtopics 14.1 How To Use The Parts Catalog 14.2 Example of a Parts List ¦ Copyright IBM Corp. 1992...
  • Page 32 IBM PS/2 Model 25 SX HMR How To Use The Parts Catalog 14.1 How To Use The Parts Catalog SIMILAR ASSEMBLIES: If two assemblies contain a majority of identical parts, they are broken down on the same list. Parts peculiar to one or the other of the assemblies are listed separately and identified by description.
  • Page 33 IBM PS/2 Model 25 SX HMR Example of a Parts List 14.2 Example of a Parts List Index System Unit Cover 72X8501 Front Bezel/Logo (R) 72X8502 Miscellaneous Hardware Kit (AR) 72X8580 Knob Assembly, Hard Disk Drive Support Structure ¦ Copyright IBM Corp. 1992...

  • Page 34: System Overview

    IBM PS/2 Model 25 SX HMR System Overview 15.0 System Overview PICTURE 7 ¦ Copyright IBM Corp. 1992 15.0 - 1...

  • Page 35: Parts Catalog

    IBM PS/2 Model 25 SX HMR Parts Catalog 16.0 Parts Catalog Warning: Follow "General IBM Electro-Static Discharge (ESD) Instructions" in topic FRONT_2.1 before touching system boards, adapters, math coprocessors, memory module kits, diskette drives, or hard disk drives. Index System Unit...
  • Page 36 IBM PS/2 Model 25 SX HMR Parts Catalog Keyboard Cable and Mouse Keyboard Cable 72X8537 Mouse 1383640 Mouse Ball and Pop-Off Retainer 33F8461 Mouse Ball and Twist-Off Retainer 33F8462 Enhanced Keyboard (101/102 Key) Canadian French 1394800 Latin American Spanish 1391506 U.S.
  • Page 37 IBM PS/2 Model 25 SX HMR Parts Catalog Printed in the United States of America ¦ Copyright IBM Corp. 1992 16.0 - 3...

Table of Contents