IBM PS/2 80 Hardware Maintenance Reference
  1. Manuals
  2. Brands
  3. IBM Manuals
  4. Desktop
  5. PS/2 80
  6. Hardware maintenance reference

IBM PS/2 80 Hardware Maintenance Reference

Hide thumbs
Table of Contents

Advertisement

Quick Links

IBM PS/2 Model 80 HMR
FRONT
PICTURE 1
Part Number 84F8548
Form Number S64F-3995-01
September 25, 1990
¦ Copyright IBM Corp. 1990
FRONT - 1

Advertisement

Table of Contents
loading

Related Manuals for IBM PS/2 80

Summary of Contents for IBM PS/2 80

  • Page 1 IBM PS/2 Model 80 HMR FRONT PICTURE 1 Part Number 84F8548 Form Number S64F-3995-01 September 25, 1990 ¦ Copyright IBM Corp. 1990 FRONT - 1...

  • Page 2: Edition Notice

    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_1 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 IBM PS/2 Model 80 HMR Table of Contents CONTENTS Table of Contents EDITION Edition Notice FRONT_1 Special Notices CONTENTS Table of Contents Product Description Security 1.1.1 Cover Lock 1.1.2 Power-On Password System-Board Features 1.2.1 Microprocessor 1.2.2 CMOS RAM and CMOS RAM Extension 1.2.3...

  • Page 5: Product Description

    IBM PS/2 Model 80 HMR Product Description 1.0 Product Description The IBM (*) Personal System/2 (*) Model 80 computers use the IBM Micro Channel (*) architecture. The features of the various types of Model 80 are: Security: cover lock and power-on password System board: 16-, 20-, or 25-MHz 80386 Microprocessor.
  • Page 6 IBM PS/2 Model 80 HMR Security 1.1 Security Subtopics 1.1.1 Cover Lock 1.1.2 Power-On Password ¦ Copyright IBM Corp. 1990 1.1 - 1...

  • Page 7: Cover Lock

    IBM PS/2 Model 80 HMR Cover Lock 1.1.1 Cover Lock The cover lock is on the left side of the system unit and can be unlocked with the user's key. If the keys for the cover lock are lost, a new cover-lock assembly can be ordered (see the parts section in the Hardware Maintenance Service pamphlet for the system you are servicing).

  • Page 8: Power-On Password

    IBM PS/2 Model 80 HMR Power-On Password 1.1.2 Power-On Password A power-on password denies access to the system when the system is powered-on. To service a system with an active and unknown power-on password, power-off the system and, do one of the following depending on...

  • Page 9: System Board Features

    IBM PS/2 Model 80 HMR System-Board Features 1.2 System-Board Features The major features of the system board are: 80386 Microprocessor CMOS RAM ROM BIOS Serial port Parallel port Diskette-drive controller Keyboard connector Pointing-device connector. Subtopics 1.2.1 Microprocessor 1.2.2 CMOS RAM and CMOS RAM Extension 1.2.3 ROM BIOS...
  • Page 10 IBM PS/2 Model 80 HMR Microprocessor 1.2.1 Microprocessor The microprocessor interprets and carries out instructions. The 80386 Microprocessor is a 32-bit processor and operates in three modes: real-address mode, virtual-address (protected) mode, or virtual 8086 mode. The microprocessor speed is 16 MHz, 20 MHz, or 25 MHz depending on the model.
  • Page 11 IBM PS/2 Model 80 HMR CMOS RAM and CMOS RAM Extension 1.2.2 CMOS RAM and CMOS RAM Extension The CMOS RAM provides 64 bytes of storage. The first 50 bytes are used to store system-configuration and security information. The real-time clock uses the remaining 14 bytes to track the date, time, and battery level.
  • Page 12 IBM PS/2 Model 80 HMR ROM BIOS 1.2.3 ROM BIOS ROM BIOS contains the instructions and routines that control the keyboard, diskette drives, fixed disk drive, displays, and other major input/output devices in the system. Some adapters have their own ROM modules containing extended BIOS routines that work with the system-board ROM BIOS.
  • Page 13 Some of these adapters provide a display connector of their own. extended expansion slots also support all adapters designed to be installed in the shorter slots. Warning: Some non-IBM graphics adapters drive rather than receive VGA signals. If more than one adapter that drives a VGA signal is installed in a system, both adapters will be damaged.

  • Page 14: Serial Port

    IBM PS/2 Model 80 HMR Serial Port 1.2.5 Serial Port The serial port is fully programmable and supports asynchronous communications. The 25-pin, D-shell connector provides the signals to drive a device with a standard 25-contact, RS-232 connector. connected device is identified by the system configuration as either SERIAL 1 or SERIAL 2.

  • Page 15: Parallel Port

    IBM PS/2 Model 80 HMR Parallel Port 1.2.6 Parallel Port The parallel port allows the attachment of devices that accept eight bits of parallel data at standard transistor-transistor-logic (TTL) levels. The port has a 25-pin, D-shell connector and is designed primarily for printers.

  • Page 16: Diskette Drive Controller

    The controller connects to the diskette drives through a single 40-pin connector on the system board. Signals and voltages are supplied through the diskette-drive cable that plugs into the connector. These signals and voltages can operate two IBM 3.5-inch diskette drives. ¦ Copyright IBM Corp. 1990 1.2.7 - 1...
  • Page 17 IBM PS/2 Model 80 HMR Keyboard Connector and Pointing-Device Connector 1.2.8 Keyboard Connector and Pointing-Device Connector The two 6-pin connectors at the rear of the system board are for a keyboard and a pointing device (mouse). The keyboard connector is marked with a small keyboard figure molded into the back panel;...
  • Page 18 IBM PS/2 Model 80 HMR Option Compatibility 2.0 Option Compatibility The Model 80 uses only those adapters that are specifically designed for All supported 16-bit adapters operate in any system-board expansion slot. For supported options, see the parts section in the Hardware Maintenance Service pamphlet for the system you are servicing.
  • Page 19 ¦ Read/Write ¦ +-----------------------+------------------------+-----------------------¦ ¦ ¦ ¦ ¦ +------------------------------------------------------------------------+ Note: For additional information, see "Diskette Drives and Diskettes" in the IBM Personal System/2 Hardware Maintenance Reference General Information pamphlet in this manual. ¦ Copyright IBM Corp. 1990 2.1 - 1...

  • Page 20: Fixed Disk Drives

    IBM PS/2 Model 80 HMR Fixed Disk Drives 2.2 Fixed Disk Drives Several fixed disk drives are available for PS/2 systems. The fixed disk drive and fixed-disk-drive interface must be the same. For example, an enhanced small device interface (ESDI) adapter must be used with an ESDI drive.
  • Page 21 IBM PS/2 Model 80 HMR Terminators 2.3 Terminators Diskette Drives: do not use or require terminators. Fixed Disk Drives: one or more cables are used to connect the fixed-disk adapters to the fixed disk drives. For each cable used, the last drive on the cable must have a terminator.

  • Page 22: Operating Requirements

    IBM PS/2 Model 80 HMR Operating Requirements 3.0 Operating Requirements This section describes the operations that occur from the time the system is powered-on until the minimum operating requirements have been met. Subtopics 3.1 Power Supply ¦ Copyright IBM Corp. 1990...

  • Page 23: Power Supply

    IBM PS/2 Model 80 HMR Power Supply 3.1 Power Supply The power supply automatically switches to either the 100-125 Vac or the 200-240 Vac range. The ac input is converted to dc outputs that supply the system with proper operating voltages.

  • Page 24: Diagnostic Programs

    IBM PS/2 Model 80 HMR Diagnostic Programs 4.0 Diagnostic Programs For information on POST, system utility programs, customer and advanced diagnostics, see the Diagnostic Information for Micro Channel Computers pamphlet. Subtopics 4.1 System Memory ¦ Copyright IBM Corp. 1990 4.0 - 1...

  • Page 25: System Memory

    IBM PS/2 Model 80 HMR System Memory 4.1 System Memory Subtopics 4.1.1 System-Board Memory 4.1.2 Memory-Expansion Adapters 4.1.3 Memory Requirements and Limitations 4.1.4 Memory Errors ¦ Copyright IBM Corp. 1990 4.1 - 1...

  • Page 26: System-Board Memory

    IBM PS/2 Model 80 HMR System-Board Memory 4.1.1 System-Board Memory The Model 80 system-board memory varies from model to model. The system board has at least 1MB of memory installed at the time of shipment. Additional memory can be installed by adding memory-expansion adapters.
  • Page 27 IBM PS/2 Model 80 HMR Memory-Expansion Adapters 4.1.2 Memory-Expansion Adapters An optional memory adapter, the 80386 Memory Expansion Adapter, is available to extend the memory capabilities of the Model 80. The 80386 Memory Expansion Adapter is shipped with one 80386 Memory Expansion Kit.
  • Page 28 IBM PS/2 Model 80 HMR Memory Requirements and Limitations 4.1.3 Memory Requirements and Limitations The system board does not have to be fully populated before you add 80386 Memory Expansion Adapters, and each memory-expansion adapter does not have to be filled to capacity before you add another memory-expansion adapter.

  • Page 29: Memory Errors

    IBM PS/2 Model 80 HMR Memory Errors 4.1.4 Memory Errors The Model 80 activates and deactivates memory in 1MB blocks, except for the first 1MB of system-board memory. For this block, the following occurs: If the POST detects an error in the first 512KB of system-board...

  • Page 30: Specifications

    Low Range: Minimum: 90 Vac Maximum: 137 Vac. High Range: Minimum: 180 Vac Maximum: 265 Vac. Input kilovolt-amperes (kVA) Minimum Configuration (as shipped from IBM): Approximately .11 Maximum Configuration: Approximately .53 kVA. ¦ Copyright IBM Corp. 1990 5.0 - 1...

  • Page 31: Special Tools

    Volt-Ohm Meter A meter similar to the Triplet Model 310. (1) Wrap Plug The Tri-Connector wrap plug (IBM part 72X8546) is used during advanced diagnostic tests of serial and parallel ports. The Tri-Connector wrap plug replaces the following: (IBM part 8529228) Printer Adapter wrap plug...

  • Page 32: Service Position

    IBM PS/2 Model 80 HMR Service Position 7.0 Service Position The Model 80 should be upright when being serviced. If necessary, the unit can be placed on the side without the cover after the feet have been folded. CAUTION: The system unit with options may weigh as much as 26 kilograms (58 pounds).

  • Page 33: Removals And Replacements

    IBM PS/2 Model 80 HMR Removals and Replacements 8.0 Removals and Replacements The arrows in the removals and replacements section show the direction of movement to remove a FRU, to turn a screw, or to press a tab to release the FRU.
  • Page 34 IBM PS/2 Model 80 HMR 1005 Cover 8.1 1005 Cover CAUTION: Before removing any field replaceable unit (FRU), power-off the system, unplug all power cords from electrical outlets, and disconnect any interconnecting cables. PICTURE 5 ¦ Copyright IBM Corp. 1990...
  • Page 35 IBM PS/2 Model 80 HMR 1010 Cover Lock 8.2 1010 Cover Lock Cover (1005) PICTURE 6 ¦ Copyright IBM Corp. 1990 8.2 - 1...
  • Page 36 IBM PS/2 Model 80 HMR 1015 80386 System-Board Memory-Expansion Kit 8.3 1015 80386 System-Board Memory-Expansion Kit Cover (1005) Note: Not all models have memory-expansion-kit latches 1. PICTURE 7 ¦ Copyright IBM Corp. 1990 8.3 - 1...
  • Page 37 IBM PS/2 Model 80 HMR 1020 Adapters 8.4 1020 Adapters Cover (1005) Disconnect any cables attached to the adapter. Note: Before replacing an adapter, note the locations of the adapter and cables. When replacing an adapter, install the replacement adapter in the same slot as the adapter that was removed.
  • Page 38 IBM PS/2 Model 80 HMR 1025 80386 Memory Expansion Kit 8.5 1025 80386 Memory Expansion Kit Cover (1005) 80386 Memory Expansion Adapter (1020). Note: The 80386 Memory Expansion Kits can be installed in any order. PICTURE 9 ¦ Copyright IBM Corp. 1990...
  • Page 39 IBM PS/2 Model 80 HMR 1030 Math Coprocessor 8.6 1030 Math Coprocessor Cover (1005) Remove any adapters (1020) that are in the way. Warning: Remove the math coprocessor carefully. Do not bend the pins when removing the math coprocessor. The math coprocessor can be damaged by electrostatic discharge, prying between the module and connector, or prying between the connector and the system board.
  • Page 40 When replacing the battery, use only Part No. 72X8498. of another battery could result in ignition or explosion of the battery. Replacement batteries can be ordered from IBM or IBM Authorized Dealers. Warning: To avoid accidentally discharging the battery, remove it before disconnecting the battery and speaker assembly cable.
  • Page 41 IBM PS/2 Model 80 HMR 1040 Feet 8.8 1040 Feet Cover (1005) Remove any adapters (1020) that are in the way. PICTURE 12 ¦ Copyright IBM Corp. 1990 8.8 - 1...
  • Page 42 IBM PS/2 Model 80 HMR 1045 Front Bezel 8.9 1045 Front Bezel PICTURE 13 ¦ Copyright IBM Corp. 1990 8.9 - 1...
  • Page 43 IBM PS/2 Model 80 HMR 1050 Carrying Handle 8.10 1050 Carrying Handle Front bezel (1045) PICTURE 14 ¦ Copyright IBM Corp. 1990 8.10 - 1...
  • Page 44 IBM PS/2 Model 80 HMR 1055 Power Supply 8.11 1055 Power Supply Cover (1005) Front bezel (1045). Disconnect any cables necessary for removal. PICTURE 15 ¦ Copyright IBM Corp. 1990 8.11 - 1...
  • Page 45 IBM PS/2 Model 80 HMR 1060 Diskette Drive 8.12 1060 Diskette Drive Cover (1005) Front bezel (1045). Note: Some models require that you unplug the diskette-drive cable before removing the drive. PICTURE 16 ¦ Copyright IBM Corp. 1990 8.12 - 1...
  • Page 46 IBM PS/2 Model 80 HMR 1065 Diskette-Drive Cable Retainer 8.13 1065 Diskette-Drive Cable Retainer Cover (1005) Front bezel (1045) Diskette drives (1060). Disconnect any cables necessary for removal. Notes: Not all models have diskette-drive cable retainers. See "Locations" for cable connection and arrangement information.
  • Page 47 IBM PS/2 Model 80 HMR 1070 Diskette-Drive Support Structure 8.14 1070 Diskette-Drive Support Structure Cover (1005) Front bezel (1045) Diskette drive (1060) Diskette-drive cable retainer (1065). PICTURE 18 ¦ Copyright IBM Corp. 1990 8.14 - 1...
  • Page 48 IBM PS/2 Model 80 HMR 1075 Fixed Disk Drive (Front Bay) 8.15 1075 Fixed Disk Drive (Front Bay) Warning: Improper shipping and handling can result in permanent loss of all data and formatting on the fixed disk drive. Have the user back up all information from the fixed disk drive.
  • Page 49 IBM PS/2 Model 80 HMR 1080 Fixed Disk Drive (Rear Bay) 8.16 1080 Fixed Disk Drive (Rear Bay) Warning: Improper shipping and handling can result in permanent loss of all data and formatting on the fixed disk drive. Have the user back up all information from the fixed disk drive.
  • Page 50 IBM PS/2 Model 80 HMR 1085 Fixed-Disk-Drive Bracket (SCSI Drives) 8.17 1085 Fixed-Disk-Drive Bracket (SCSI Drives) Remove two screws on each side (for a one-drive bracket) or remove four screws on each side (for a two-drive bracket). Disconnect any cables necessary for removal.
  • Page 51 IBM PS/2 Model 80 HMR 1090 Fixed-Disk-Drive Support Structure (SCSI Drives) 8.18 1090 Fixed-Disk-Drive Support Structure (SCSI Drives) Cover (1005) Fixed disk drive (front bay), if installed (1075) Fixed disk drive (rear bay) (1080). PICTURE 22 ¦ Copyright IBM Corp. 1990...
  • Page 52 IBM PS/2 Model 80 HMR 1095 System Board 8.19 1095 System Board Warning: To avoid accidentally discharging the battery, remove it before disconnecting the battery and speaker assembly cable. Connect the cable before replacing the battery. Cover (1005) Adapters (1020)
  • Page 53 IBM PS/2 Model 80 HMR 1100 Fixed-Disk-Drive Support-Structure Bracket 8.20 1100 Fixed-Disk-Drive Support-Structure Bracket Cover (1005) Adapters (1020) Front bezel (1045) Power supply (1055) Front or rear fixed disk drives (1075)(1080) Fixed-disk-drive support structure (1090) System board (1095). Note: When you remove the four screws that hold the bracket, the labels on the outside of the system will be destroyed.
  • Page 54 IBM PS/2 Model 80 HMR Locations 9.0 Locations Subtopics 9.1 Front View 9.2 Rear View 9.3 Interior View 9.4 Internal Cables Model 80 (8580-041, 071, 111, 311) 9.5 Internal Cables Model 80 (8580-081, 121, 161, 321, A21, A31, A16) 9.6 System Board Model 80 (8580-041, 071, 081, 111, 121, 161, 311, 321) 9.7 System Board Model 80 (8580-A21, A31, A16)

  • Page 55: Front View

    IBM PS/2 Model 80 HMR Front View 9.1 Front View Carrying handle Cover lock Power-good light Fixed-disk-drive in-use light Power switch Diskette-drive in-use light Diskette drive A Diskette-eject button Diskette drive B (if installed) Serial number. PICTURE 25 ¦ Copyright IBM Corp. 1990...

  • Page 56: Rear View

    IBM PS/2 Model 80 HMR Rear View 9.2 Rear View Power-cord connector Keyboard connector Pointing-device connector Parallel port Serial port Display connector SCSI connector (some models) Expansion slots. PICTURE 26 ¦ Copyright IBM Corp. 1990 9.2 - 1...

  • Page 57: Interior View

    IBM PS/2 Model 80 HMR Interior View 9.3 Interior View Power supply Diskette drive A Diskette drive B (if installed) Front-bay fixed disk drive (if installed) Battery and speaker assembly Expansion slots (numbered from bottom, 1 to 8) Rear-bay fixed disk drive 80386 System-Board Memory-Expansion Kit.
  • Page 58 IBM PS/2 Model 80 HMR Internal Cables Model 80 (8580-041, 071, 111, 311) 9.4 Internal Cables Model 80 (8580-041, 071, 111, 311) This diagram shows the arrangement of the cables that connect the various devices. Power supply Fixed disk drive (rear bay)
  • Page 59 IBM PS/2 Model 80 HMR Internal Cables Model 80 (8580-081, 121, 161, 321, A21, A31, A16) 9.5 Internal Cables Model 80 (8580-081, 121, 161, 321, A21, A31, A16) This diagram shows the arrangement of the cables that connect the various devices.
  • Page 60 IBM PS/2 Model 80 HMR System Board Model 80 (8580-041, 071, 081, 111, 121, 161, 311, 321) 9.6 System Board Model 80 (8580-041, 071, 081, 111, 121, 161, 311, 321) Power-supply connector Diskette-drive connector 80386 System-Board Memory-Expansion Kit connectors Math-coprocessor connector (081, 111, 121, 161, 311, 321)
  • Page 61 IBM PS/2 Model 80 HMR System Board Model 80 (8580-A21, A31, A16) 9.7 System Board Model 80 (8580-A21, A31, A16) Power-supply connector Diskette-drive connector 80386 System-Board Memory-Expansion Kit connectors Math-coprocessor connector Battery and speaker assembly connector 16-bit expansion slot 32-bit expansion slot...
  • Page 62 IBM PS/2 Model 80 HMR Safety Grounds 10.0 Safety Grounds Power-cord connector Primary ground Chassis ground Expansion slot screws Screws. PICTURE 32 Notes: ¦ Copyright IBM Corp. 1990 10.0 - 1...

Table of Contents