IBM PS/2 90 XP 486 Owner's manual

FRONT
PICTURE 1
July 1992
Part Number 10G6475
Form Number S10G-6475-00
IBM PS/2 Model 90 XP 486 and 95 XP 486 HMR
¦ Copyright IBM Corp. 1990, 1992
FRONT - 1

EDITION Edition Notice
Safety Information
Refer to the Hardware Maintenance Reference General Information
pamphlet for the following safety information:
General Safety
Electrical Safety.
First Edition (July 1992)
The following paragraph does not apply to the United Kingdom or any
country where such provisions are inconsistent with local law:
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"AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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not allow disclaimer of express or implied warranties in certain
transactions, therefore, this statement may not apply to you.
This publication could include technical inaccuracies or typographical
errors. Changes are periodically made to the information herein;
these changes will be incorporated in new editions of the publication.
IBM may make improvements and/or changes in the product(s) and/or the
program(s) described in this publication at any time.
It is possible that this publication may contain reference to, or
information about, IBM products (machines and programs), programming,
or services that are not announced in your country. Such references
or information must not be construed to mean that IBM intends to
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Requests for technical information about IBM products should be made
to your IBM Authorized Dealer or your IBM Marketing Representative.
IBM may have patents or pending patent applications covering subject
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give you any license to these patents. You can send license
inquiries, in writing, to the IBM Director of Commercial Relations,
IBM Corporation, Purchase, NY 10577.
¦ Copyright International Business Machines Corporation 1990, 1992.
All rights reserved.
Note to U.S. Government Users -- Documentation related to restricted
rights -- Use, duplication or disclosure is subject to restrictions
set forth in GSA ADP Schedule Contract with IBM Corp.
IBM PS/2 Model 90 XP 486 and 95 XP 486 HMR
Edition Notice
¦ Copyright IBM Corp. 1990, 1992
EDITION - 1

FRONT_1 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. Any functionally equivalent product, program, or
service that does not infringe any of IBM's intellectual property rights
or other legally protectible rights may be used instead of the IBM
product, program, or service. Evaluation and verification of operation in
conjunction with other products, programs, or services, except those
expressly designated by IBM, are the user's responsibility.
IBM may have patents or pending patent applications covering subject
matter in this document. The furnishing of this document does not give
you any license to these patents. You can send license inquiries, in
writing, to the IBM Director of Commercial Relations, IBM Corporation,
Purchase, NY 10577.
The following terms, denoted by an asterisk (*) in this publication, are
trademarks of the IBM Corporation in the United States and/or other
countries:
+------------------------------------------------------------------------+
¦ IBM ¦ Presentation Manager ¦ OS/2 ¦
¦ XGA ¦ Personal System/2 ¦ Micro Channel ¦
¦ PS/2 ¦ ¦ ¦
+------------------------------------------------------------------------+
The following terms, denoted by a double asterisk (**) in this
publication, are trademarks of other companies:
+------------------------------------------------------------------------+
¦ Windows ¦ Microsoft Corporation ¦
+------------------------------------------------------------------------+
IBM PS/2 Model 90 XP 486 and 95 XP 486 HMR
Notices
¦ Copyright IBM Corp. 1990, 1992
FRONT_1 - 1

CONTENTS Table of Contents
EDITION Edition Notice
FRONT_1 Notices
CONTENTS Table of Contents
1.0 Product Description (Model 90 XP 486)
2.0 Product Description (Model 95 XP 486)
2.1 Security
2.1.1 Cover Lock
2.1.2 Bolt-down Capability (Model 90)
2.1.3 Power-on Password
2.2 Override Jumper
2.3 System Features
2.3.1 Processor Boards
2.3.2 CMOS RAM and CMOS RAM Extension
2.3.3 IML, POST, and BIOS
2.3.4 Video
2.3.5 Serial Ports
2.3.6 Parallel Port
2.3.7 Diskette-Drive Controller
2.3.8 Keyboard Connector and Pointing-Device Connector
2.4 System Memory
2.4.1 Memory Requirements and Limitations
2.4.2 Types of Memory Configurations
2.4.3 Types of Error Detection
2.4.4 Memory Errors
2.5 Resolving Memory-Address Conflicts
2.5.1 Changing the Software Configuration
2.5.2 Changing the System Configuration
2.6 Selectable Drive-Startup Sequence
2.6.1 Example: Default Startup Sequence
2.6.2 Example: Changing the Startup Sequence
3.0 Option Compatibility
3.1 Drive and Diskette Compatibility
3.2 SCSI Hard Disk Drives and Devices
3.3 SCSI ID Numbers
3.3.1 Selecting a SCSI ID Priority
3.3.2 Determining the SCSI ID of an existing device
3.3.3 Setting the SCSI ID
3.3.4 Motor-Start Jumper
3.4 Terminators
3.4.1 SCSI Device Cabling and Terminators
3.4.2 SCSI Adapter Terminators
4.0 Operating Requirements
4.1 Power Supply
5.0 System Diskettes (Reference and Diagnostic)
6.0 Updating the IML Image (System Diskettes)
6.1 Installation Requirements
6.2 Backing Up the Current System Partition
6.3 Installing a New Version of the Reference Diskette
6.4 Making a New Backup Copy of the System Partition
7.0 Using ASCII Terminals (Model 95 XP 486)
7.1 ASCII Terminal Setup and Menu Selection
7.2 ASCII Terminal Configuration
7.2.1 Console Selection
7.2.2 Error Messages
7.2.3 Operations
8.0 System Error Log
8.1 Viewing the Error Log
8.2 Types of Errors Detected
8.3 Error Storage
8.4 Application
8.5 Dumping Extended Diagnostic Data Information
9.0 Miscellaneous System-Related Information
10.0 Specifications (Model 90 XP 486)
11.0 Specifications (Model 95 XP 486)
12.0 Special Tools
13.0 Handling Electro-Static Discharge (ESD) Sensitive Devices
14.0 Removals and Replacements (Model 90 XP 486)
14.1 1005 Cover
14.2 1010 Cover Lock
14.3 1015 Fan / Air Baffle
14.4 1020 Power Switch / Speaker Assembly
14.5 1025 Diskette Drive
14.6 1030 Hard Disk Drive
14.7 1035 Adapters
14.8 1040 Option Processor
14.9 1045 Memory Riser Card Bracket
14.10 1050 Memory Riser Card
14.11 1055 Power Supply
14.12 1060 Battery
14.13 1065 System Board
14.14 1070 Video Memory
15.0 Locations
15.1 Front View
IBM PS/2 Model 90 XP 486 and 95 XP 486 HMR
Table of Contents
¦ Copyright IBM Corp. 1990, 1992
CONTENTS - 1

15.2 Rear View
15.3 Interior View
15.4 Internal Cables
15.5 System Board
16.0 Grounds
17.0 Removals and Replacements (Model 95 XP 486)
17.1 1005 Cover and Front Bezel
17.2 1010 Cover Lock
17.3 1015 Drive Retainer and Bezels
17.4 1020 Information Panel Assembly
17.5 1025 Diskette Drive
17.6 1030 Hard Disk Drive
17.7 1035 Option Hardware Trays
17.8 1040 Adapters and Adapter Guide
17.9 1045 Option Processor
17.10 1050 Power Supply
17.11 1055 Memory Module Kit
17.12 1060 Battery
17.13 1065 System Board
17.14 1070 Adapter Retainer and Ground Assembly
17.15 1075 Rear Bezel
17.16 1080 Drive Support Structure
17.17 1085 Access Cover Fan
17.18 1090 Access Cover Fan Cable
17.19 1095 Pedestal
18.0 Locations
18.1 Front View
18.2 Rear View
18.3 Interior View
18.4 Internal Cables
18.5 System Board
19.0 Grounds
IBM PS/2 Model 90 XP 486 and 95 XP 486 HMR
Table of Contents
¦ Copyright IBM Corp. 1990, 1992
CONTENTS - 2

1.0 Product Description (Model 90 XP 486)
The IBM (*) Personal System/2 (*) Model 90 XP 486 computers use the IBM
Micro Channel (*) architecture. The features of the various types of the
Model 90 are:
Security
- Cover lock
- Bolt-down capability
- Power-on password
System board
- Processor board (with a connector for a cache option) (with
extended math capability)
- 80486 25-MHz
- 80486 33-MHz
- 80486 50-MHz
- Processor board (without a connector for a cache option)
- 80486SX 20-MHz (without extended math capability)
- 80487SX 20-MHz (with extended math capability)
- 80486SX 25-MHz (without extended math capability) (with a
second socket for an option processor)
- 80486DX2 25/50 25-MHz (with extended math capability) (runs
internally at 50-MHz)
- 80486 50-MHz (with extended math capability and cache)
- 64 byte complementary metal-oxide semiconductor (CMOS) random
access memory (RAM) with real-time clock and 8KB (KB equals
approximately 1 000 bytes) CMOS RAM extension
- Two memory-riser cards: one card shipped blank and one card
shipped with a minimum of 4MB (MB equals approximately 1 000 000
bytes) of random access memory (RAM). (64MB total system memory
capacity.) Minimum required memory is 2MB.
- Video
- Extended graphics array (XGA (*)) with 512KB expandable to 1MB
- Video graphics array (VGA) compatible
- Four expansion slots
- Three 32-bit expansion slots with matched-memory extension
- One 32-bit expansion slot with auxiliary-video extension
- Two serial port connectors
- Parallel port connector
- Diskette-drive controller
- Battery (to keep CMOS RAM active when power is off)
- Keyboard connector
- Pointing-device connector
Initial Machine Load (IML) support
Power supply
- Automatically switches to the 100-125 V ac or the 200-240 V ac
range
- 50 or 60 Hz
Speaker and switch assembly
101/102/122-key keyboard
Small Computer System Interface (SCSI) adapter with internal and
external connectors (occupies one of the four expansion slots)
SCSI fixed disk drive (hard disk drive)
Diskette drive.
(*) Trademark of the International Business Machines
Corporation.
IBM PS/2 Model 90 XP 486 and 95 XP 486 HMR
Product Description (Model 90 XP 486)
¦ Copyright IBM Corp. 1990, 1992
1.0 - 1

2.0 Product Description (Model 95 XP 486)
The IBM (*) Personal System/2 (*) Model 95 XP 486 computers use the IBM
Micro Channel (*) architecture. The features of the various types of the
Model 95 are:
Security
- Cover lock
- Power-on password
System board
- Processor board (with a connector for a cache option) (with
extended math capability)
- 80486 25-MHz
- 80486 33-MHz
- 80486 50-MHz
- 80486DX2 33/66 33-MHz (runs internally at 66-MHz)
- Processor board (without a connector for a cache option)
- 80486SX 20-MHz (without extended math capability)
- 80487SX 20-MHz (with extended math capability)
- 80486SX 25-MHz (without extended math capability) (with a
second socket for an option processor)
- 80486DX2 25/50 25-MHz (with extended math capability) (runs
internally at 50-MHz)
- 80486 50-MHz (with extended math capability and cache)
- 64 byte complementary metal-oxide semiconductor (CMOS) random
access memory (RAM) with real-time clock and 8KB (KB equals
approximately 1000 bytes) CMOS RAM extension.
- Shipped with a minimum of 4MB (MB equals approximately 1 000 000
bytes) of random access memory (RAM). (64MB total system memory
capacity.) Minimum required memory is 2MB.
- Video
- Extended graphics array (XGA (*)) with 512KB expandable to 1MB
(occupies one of the eight expansion slots)
- Video graphics array (VGA) compatible
- Eight 32-bit expansion slots
- Six 32-bit expansion slots with matched-memory extension
- One 32-bit expansion slot with auxiliary-video extension
- One 32-bit expansion slot with base-video extension
- Serial-port connector
- Parallel-port connector
- Diskette-drive controller
- Battery (to keep CMOS RAM active when power is off)
- Keyboard connector
- Pointing-device connector
Initial Machine Load (IML) support
Power supply
- Switchable to the 100-125 V ac or the 200-240 V ac range
- 50 or 60 Hz
Speaker
Information panel
Small Computer System Interface (SCSI) adapter with internal and
external connectors (occupies one of the eight expansion slots)
101/102/122-key keyboard
SCSI fixed disk drive (hard disk drive)
Diskette drive.
(*) Trademark of the International Business Machines
Corporation.
Subtopics
2.1 Security
2.2 Override Jumper
2.3 System Features
2.4 System Memory
2.5 Resolving Memory-Address Conflicts
2.6 Selectable Drive-Startup Sequence
IBM PS/2 Model 90 XP 486 and 95 XP 486 HMR
Product Description (Model 95 XP 486)
¦ Copyright IBM Corp. 1990, 1992
2.0 - 1

2.1 Security
Subtopics
2.1.1 Cover Lock
2.1.2 Bolt-down Capability (Model 90)
2.1.3 Power-on Password
IBM PS/2 Model 90 XP 486 and 95 XP 486 HMR
Security
¦ Copyright IBM Corp. 1990, 1992
2.1 - 1

2.1.1 Cover Lock
Model 90: the cover lock is in the middle of the rear panel of the system
unit. The cover cannot be removed without the cover-lock key.
Model 95: the cover lock is on the front panel of the system unit. The
front bezel and side cover cannot be removed without the user's key.
If the keys for the cover lock are lost, order a new cover-lock assembly
(see "Parts" in the Hardware Maintenance Service pamphlet).
IBM PS/2 Model 90 XP 486 and 95 XP 486 HMR
Cover Lock
¦ Copyright IBM Corp. 1990, 1992
2.1.1 - 1

2.1.2 Bolt-down Capability (Model 90)
The bolt-down capability allows you to attach the system unit to a table
or desk.
The table or desk must have holes drilled through it, and the bolts must
be inserted from below (the table or desk) into the holes in the base of
the system unit. There are three holes 1 . The distance between the two
holes on the right side of the base is 165 mm
(6.5 in.).
Use 6 mm (0.24 in.) bolts. The length of the bolts should be 15 mm (0.60
in.) plus the thickness of the table or desk.
PICTURE 2
IBM PS/2 Model 90 XP 486 and 95 XP 486 HMR
Bolt-down Capability (Model 90)
¦ Copyright IBM Corp. 1990, 1992
2.1.2 - 1