Compaq AP250 - Deskpro Workstation - 128 MB RAM Manual

158772-001 1
Addenda #1 and 2 to Compaq
Deskpro Workstation AP250
Maintenance & Service Guide
Compaq Deskpro Workstation AP250
Part number 118133-003
Spare part number 158269-001
The complete MSG follows this addendum.
This addendum contains changes to the original document.
2000 Compaq Computer Corporation. All rights reserved. Compaq is
registered in the U. S. Patent and Trademark Office. Product names
mentioned herein may be trademarks and/or registered trademarks of their
respective companies. Second Edition (August 2000).

2Addendum to MSG 118133-001
Spare Part Numbers
Description Spare Part Number Warranty Tier
Intel Pentium III processor with heatsink (401405-003), clip
(120891-001), and baffle (118110-001).
600-MHz/133-MHz 158263-001 A
Intel Pentium III processor with heatsink (401405-003) and clip
(170524-001).
733-MHz/133-MHz 170527-001 A
867-MHz/133-MHz 180710-001 A
Intel Pentium III processor with heatsink (401405-003), clip
(170524-001), and baffle (212889-001).
1-GHz/133-MHz 216699-001 A
Memory Modules
RIMM 256-MB 171959-001 A
256-MB, 45 NS, RDRAM 161454-001 A
Graphics Controllers
Matrox G200 MMS 171975-001 A
Matrox MGA-G400A, AGP 2x/4x 163361-001 A
nVIDIA TNT2 PRO, 16-MB SGRAM 179997-001 A
ELSA Gloria II AGP, 64 MB 174641-001 A
Hard Drives
10-GB Ultra ATA Hard Drive (7200 RPM) 135364-001 A
20-GB Ultra ATA Hard Drive (7200 RPM) 180475-001 A
13.5-GB Ultra ATA Hard Drive (7200 RPM) 140515-001 A
30-GB Ultra ATA Hard Drive (7200 RPM) 180477-001 A
36.2-GB Wide-Ultra 160 Hard Drive 192197-001 A
Other Drives
48x CD-ROM Drive 187263-001 A
32x R-W CD-ROM Drive 173747-001 A
DVD-ROM Drive, 10x 215422-001 A
DVD-ROM Drive, 6x/32x, Opal 120417-001 A
DVD-ROM Drive, 10x/40x, Opal 161430-001 A
LS120 SuperDisk 209938-001 A

158772-001 3
Spare Part Numbers (continued)
Description Spare Part Number Warranty Tier
Miscellaneous Cable Kit
CD-ROM data, 12.5”(179048-001)
CD-ROM data, 12.5”(105876-001)
Diskette drive, 15.5”(179049-001)
CD-ROM audio, 12”(288489-001)
Thermal sensor (166785-001)
Hard drive/CD-ROM drive data, 14”(242947-001)
Hard drive data, 7”(247116-001)
Hard drive/CD-ROM drive data, 14.25”(242947-008)
Diskette drive data, 12”(247176-003)
Hard drive, CD-ROM drive data, 10”(247116-002)
Y-adapter, hard drive data (296563-001)
179182-001 A
Miscellaneous Cable Kit
Diskette Drive, 11”(166838-001)
CD-ROM Audio, 21”(288489-002)
Hard drive data, IDE, 7”single device (247116-001)
Hard drive data, IDE, 14”single device (242947-001)
Diskette drive, twisted cable, 34”(356107-001)
Hard drive data, IDE, dual devices, 18”(108950-007)
166879-002 A
Ultra SCSI-2 Cable, 4 device 402266-001*A
SCSI LVD Twisted Pair Cable 158277-001 A
Fan, 90mm 166922-001 A
Speaker 158267-001 A
Intel PRO/100+ Management Adapter NIC (10/100 Mb/s Auto-
sensing Ethernet controller) PCI card with Wake-On/Alert-On
LAN
116188-001*A
NIC 10/100 PCI card with Wake-On/Alert-On LAN 118042-001 A
PCI SCSI Adapter 158364-001 A
Wide-Ultra2 SCSI Controller, PCI 330522-001*A
*These spare part numbers correct the listings in the original MSG.

4Addendum to MSG 118133-001
Specifications –Graphics Controllers
Matrox MGA-G400A Graphics Controller
Maximum display resolution
Graphics
Memory Color palette* Double-buffering without Z-buffering
Double buffering
with 16-bit Z-
buffering
Double buffering
with 32-bit Z-
buffering
16 MB 64 K colors (16-bit) 2048 x 1536 1800 x 1440 1600 x 1200
16 M colors (32-bit) 1600 x 1200 1280 x 1024 1280 x 1024
32 MB 64 K colors (16-bit) 2048 x 1536 2048 x 1536 2048 x 1536
16 M colors (32-bit) 2048 x 1536 2048 x 1536 1800 x 1440
* 3D acceleration is only available with a 16- or 32-bit color palette.
Matrox G200 Quad MMS Graphics Controller
Refresh Rate/Display
Graphics
Memory Aspect Ratio Resolution Vertical Horizontal
32 MB 4:3/5:4 640 x 480
800 x 600
1024 x 768
1152 x 864
1280 x 1024
1600 x 1200
1800 x 1440
60 - 200 Hz
60 - 200 Hz
30 - 140 Hz
60 - 120 Hz
60 - 100 Hz
60 - 90 Hz
60 - 70 Hz
31 –102 kHz
38 –114 Khz
48 - 113 kHz
54 - 110 kHz
64 - 107 kHz
75 - 13 kHz
89 - 1 04 kHz
32 MB 16:9/16:10 856 x 480
1280 x 720
1600 x 1024
1920 x 1080
1920 x 1200
60 –200 Hz
60 –100 Hz
60 - 100 Hz
60 - 80 Hz
60 - 76 Hz
30 –108 kHz
44 –76 kHz
64 –108 kHz
70 –94 kHz
75 –95 kHz continued

158772-001 5
Specifications –Graphics Controllers (c ontinued)
ELSA Gloria II AGP Graphics Controller
Graphics
Memory Maximum Colors Supported Resolution Maximum Refresh Rate Memory Dedicated to Texture Support
64 MB 16.7M 640 x 480
800 x 600
1024 x 768
1152 x 864
1280 x 800
1280 x 960
1280 x 1024
1600 x 1000
1600 x 1000
1600 x 1200
1600 x 1280
1600 x 1280
1900 x 1080
1920 x 1080
1920 x 1200
1900 x 1200
2048 x 1536
120 Hz
120 Hz
120 Hz
100 Hz
100 Hz
100 Hz
100 Hz
100 Hz*
85 Hz
85 Hz
85 Hz
75 Hz
85 Hz
75 Hz
85 Hz*
75 Hz
75 Hz
60 MB
58 Mb
54 MB
52 MB
52 MB
49 MB
48 MB
45 MB
45 MB
41 MB
40 MB
40 MB
39 MB
39 MB
37 MB
37 MB
27 MB
* Refresh rate may function but may not be officially supported by Compaq.

6Addendum to MSG 118133-001
Air Baffle Assembly

Compaq Deskpro Workstation AP250
Maintenance and Service Guide

Compaq Confidential – Need to Know Required
Writer: Bruce Sullivan Project: Compaq Deskpro Workstation AP250 Maintenance and Service Guide Comments:
Part Number: 118133-001 File Name: a-frnt.doc Last Saved On: 10/26/99 2:34 PM
Deskpro Workstation AP250
Maintenance and Service Guide
First Edition (October 1999)
Part Number 118133-001
Spare Part Number 158269-001
Compaq Computer Corporation

Compaq Confidential –Need to Know Required
Writer: Bruce Sullivan Project: Compaq Deskpro Workstation AP250 Maintenance and Service Guide Comments:
Part Number: 118133-001 File Name: a-frnt.doc Last Saved On: 10/26/99 2:34 PM
Notice
The information in this publication is subject to change without notice.
COMPAQ COMPUTER CORPORATION SHALL NOT BE LIABLE FOR TECHNICAL OR
EDITORIAL ERRORS OR OMISSIONS CONTAINED HEREIN, NOR FOR INCIDENTAL OR
CONSEQUENTIAL DAMAGES RESULTING FROM THE FURNISHING, PERFORMANCE, OR
USE OF THIS MATERIAL. THIS INFORMATION IS PROVIDED “AS IS,” AND COMPAQ
COMPUTER CORPORATION DISCLAIMS ANY WARRANTIES, EXPRESS, IMPLIED OR
STATUTORY, AND EXPRESSLY DISCLAIMS THE IMPLIED WARRANTIES OF
MERCHANTABILITY, FITNESS FOR PARTICULAR PURPOSE, GOOD TITLE, AND AGAINST
INFRINGEMENT.
This publication contains information protected by copyright. No part of this publication may be
photocopied or reproduced in any form without prior written consent from Compaq Computer
Corporation.
© 1999 Compaq Computer Corporation.
All rights reserved. Printed in the U.S.A.
The software described in this guide is furnished under a license agreement or nondisclosure agreement.
The software may be used or copied only in accordance with the terms of the agreement.
Compaq, Deskpro, Fastart, Compaq Insight Manager, Systempro, Systempro/LT, ProLiant, ROMPaq,
QVision, SmartStart, NetFlex, QuickFind, PaqFax, and ProSignia are registered with the United States
Patent and Trademark Office.
Neoserver, Netelligent, Systempro/XL, SoftPaq, QuickBlank, and QuickLock are trademarks and/or
service marks of Compaq Computer Corporation.
Microsoft, MS-DOS, Windows, and Windows NT are registered trademarks of Microsoft Corporation.
Pentium is a registered trademark and Xeon is a trademark of Intel Corporation.
Other product names mentioned herein may be trademarks and/or registered trademarks of their
respective companies.
Compaq Deskpro Workstation AP250
Maintenance and Service Guide
First Edition (October 1999)
Part Number 118133-001
Spare Part Number 158269-001

Compaq Confidential –Need to Know Required
Writer: Bruce Sullivan Project: Compaq Deskpro Workstation AP250 Maintenance and Service Guide Comments:
File Name: a-frnt.doc Last Saved On: 10/26/99 2:34 PM
Contents
About This Guide
Text Conventions ...................................................................................................... vii
Symbols in Text .......................................................................................................viii
Symbols on Equipment ............................................................................................viii
Rack Stability............................................................................................................. ix
Getting Help................................................................................................................ x
Compaq Technical Support.................................................................................. x
Compaq Website.................................................................................................. x
Compaq Authorized Reseller.............................................................................. xi
Chapter 1
Illustrated Parts Catalog
Mechanical Parts ......................................................................................................1-2
System Components.................................................................................................1-3
Spare Parts List.........................................................................................................1-4
Chapter 2
Service Preliminaries
Preliminary Warnings and Cautions......................................................................... 2-1
Electrostatic Discharge Information.........................................................................2-2
Equipment Symbols .................................................................................................2-3
Tools and Software Requirements............................................................................2-3
Warranty Information...............................................................................................2-4
Chapter 3
Removal and Replacement Procedures
Serial Number ..........................................................................................................3-1
Service Preparations.................................................................................................3-2
Removing the Cable Lock........................................................................................3-3

iv Compaq Deskpro Workstation AP250 Maintenance and Service Guide
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Removal and Replacement Procedures
continued
Removing the Side Access Panel .............................................................................3-4
Removing the Front Bezel........................................................................................3-5
Removing the Subpanel and Bezel Blank ................................................................3-6
Mass Storage Devices...............................................................................................3-7
Drive Positions..................................................................................................3-7
Removing a 3.5-inch Hard Drive....................................................................3-10
Removing a 3.5-inch Hard Drive with 5.25-inch Drive Adapter....................3-12
Removing a CD-ROM ....................................................................................3-16
Installing Optional SCSI Devices...........................................................................3-19
Important Guidelines for Installing Optional SCSI Devices...........................3-19
Using the SCSI Cable......................................................................................3-20
Removing the Drivelock.........................................................................................3-21
Expansion Boards...................................................................................................3-24
Removing an Expansion Board.......................................................................3-25
Removing the Card Guide......................................................................................3-26
Installing Memory Modules ...................................................................................3-27
Important Guidelines for Direct RIMM Installation .......................................3-27
Installing RIMM Modules...............................................................................3-27
Removing a Processor............................................................................................3-29
Removing a 733-MHz Processor from the Heatsink.......................................3-31
Removing the Processor Guide Rails..............................................................3-32
Removing the Speaker............................................................................................3-33
Removing the Power Supply..................................................................................3-34
Removing the Power Switch ..................................................................................3-36
Removing the System Board..................................................................................3-37
Removing the I/O Panel .........................................................................................3-38
Replacing the Lithium Battery ...............................................................................3-39
Converting a Minitower to a Desktop Configuration.............................................3-41
Converting a Desktop to a Minitower Configuration.............................................3-45

Contents v
Compaq Confidential –Need to Know Required
Writer: Bruce Sullivan Project: Compaq Deskpro Workstation AP250 Maintenance and Service Guide Comments:
Part Number: 118133-001 File Name: a-frnt.doc Last Saved On: 10/26/99 2:34 PM
Chapter 4
Diagnostic Tools
Power-On Self-Test..................................................................................................4-2
POST Messages........................................................................................................4-3
Troubleshooting Minor Problems ..........................................................................4-10
Power Problems ..............................................................................................4-12
Diskette Drive Problems .................................................................................4-13
Display Problems............................................................................................ 4-14
Printer Problems..............................................................................................4-16
Hard Drive Problems.......................................................................................4-17
Hardware Installation Problems......................................................................4-18
DVD-ROM and CD-ROM Drive (IDE) Problems..........................................4-19
Memory Problems...........................................................................................4-20
SCSI Problems................................................................................................4-20
Network Problems...........................................................................................4-21
Audio Hardware Conflicts ..............................................................................4-24
Computer Setup and Diagnostics Utilities .............................................................4-25
Accessing the Computer Setup Menu.............................................................4-26
Diagnostics Utilities........................................................................................ 4-26
SCSI Error Codes...................................................................................................4-44
Upgrading the ROM...............................................................................................4-48
Local ROM Flash............................................................................................4-48
Remote ROM Flash.........................................................................................4-49
FailSafe Boot Block ROM..............................................................................4-49
Compaq Insight Manager.......................................................................................4-51
Compaq Workstation SSD for Windows NT.........................................................4-53
Compaq Diagnostics for Windows NT ..................................................................4-54
Chapter 5
System Security
Security Features......................................................................................................5-1
Setup Password .................................................................................................5-3
Windows NT Workstation Password................................................................5-5
National Keyboard Delimiter Characters..........................................................5-6
Advanced Security Management.............................................................................. 5-6
Reenabling Diskette Boot or Diskette Write.....................................................5-7
Reenabling a Serial Port or Parallel Port...........................................................5-8
Cable Lock Provision........................................................................................5-8

vi Compaq Deskpro Workstation AP250 Maintenance and Service Guide
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Writer: Bruce Sullivan Project: Compaq Deskpro Workstation AP250 Maintenance and Service Guide Comments:
Part Number: 118133-001 File Name: a-frnt.doc Last Saved On: 10/26/99 2:34 PM
Chapter 6
Jumper and Switch Information
Power-On Password .................................................................................................6-3
Hard Drives ..............................................................................................................6-4
Ultra ATA Hard Drive (20-GB ATA66 7,200 rpm) .........................................6-4
Ultra3 SCSI Hard Drive (9.1-GB WU3 10,000 rpm)........................................6-5
Ultra3 SCSI Hard Drive (18.2-GB WU3 10,000 rpm)......................................6-6
Disk Drives...............................................................................................................6-7
40X Max CD-ROM or DVD-ROM Drive........................................................6-7
Zip Drive...........................................................................................................6-8
Chapter 7
Physical and Operating Specifications
System Unit..............................................................................................................7-2
200W Power Supply.................................................................................................7-8
Diskette Drive...........................................................................................................7-9
Hard Drives ............................................................................................................7-10
20-GB Ultra ATA Hard Drive (7,200 rpm).....................................................7-10
9-GB Wide Ultra3 SCSI Hard Drive (10,000 rpm).........................................7-11
18-GB Ultra3 SCSI Hard Drive (10,000 rpm) ................................................7-12
40X Max CD-ROM Drive......................................................................................7-13
DVD-ROM Drive...................................................................................................7-15
Zip Drive ................................................................................................................7-18
Zip Drive CartridgeDrive................................................................................7-18
Audio System .........................................................................................................7-19
Keyboard ................................................................................................................7-20
Mouse.....................................................................................................................7-20
Graphics Controllers...............................................................................................7-21
PowerStorm 300 Graphics Controller.............................................................7-21
3Dlabs Oxygen GVX1 AGP Graphics Controller...........................................7-22
Matrox G400 Graphics Controller ..................................................................7-22
Network Controller.................................................................................................7-23
RJ-45 Network Cable Specifications ..............................................................7-23
Chapter 8
External Connectors
Physical Location .....................................................................................................8-1
Rear Panel Connectors ......................................................................................8-2
Pin Assignments.......................................................................................................8-3

Contents vii
Compaq Confidential –Need to Know Required
Writer: Bruce Sullivan Project: Compaq Deskpro Workstation AP250 Maintenance and Service Guide Comments:
Part Number: 118133-001 File Name: a-frnt.doc Last Saved On: 10/26/99 2:34 PM
About This Guide
This guide is designed to be used as step-by-step instructions for installation
and as a reference for operation, troubleshooting, and future upgrades.
Text Conventions
This document uses the following conventions to distinguish elements of text:
Keys Keys appear in boldface. A plus sign (+) between
two keys indicates that they should be pressed
simultaneously.
USER INPUT User input appears in a different typeface and in
uppercase.
FILENAMES File names appear in uppercase italics.
Menu Options,
Command Names,
Dialog Box Names
These elements appear in initial capital letters.
COMMANDS,
DIRECTORY NAMES,
and DRIVE NAMES
These elements appear in uppercase.
Type When you are instructed to type information, type
the information without pressing the Enter key.
Enter When you are instructed to enter information, type
the information and then press the Enter key.

viii Compaq Deskpro Workstation AP250 Maintenance and Service Guide
Compaq Confidential –Need to Know Required
Writer: Bruce Sullivan Project: Compaq Deskpro Workstation AP250 Maintenance and Service Guide Comments:
Part Number: 118133-001 File Name: a-frnt.doc Last Saved On: 10/26/99 2:34 PM
Symbols in Text
These symbols may be found in the text of this guide. They have the following
meanings.
WARNING: Text set off in this manner indicates that failure to follow directions
in the warning could result in bodily harm or loss of life.
CAUTION: Text set off in this manner indicates that failure to follow directions
could result in damage to equipment or loss of information.
IMPORTANT: Text set off in this manner presents clarifying information or specific
instructions.
NOTE: Text set off in this manner presents commentary, sidelights, or interesting points
of information.
Symbols on Equipment
These icons may be located on equipment in areas where hazardous conditions
may exist.
Any surface or area of the equipment marked with these symbols
indicates the presence of electrical shock hazards. Enclosed area
contains no operator-serviceable parts.
WARNING: To reduce the risk of injury from electric shock hazards, do
not open this enclosure.
Any RJ-45 receptacle marked with these symbols indicates a Network
Interface Connection.
WARNING: To reduce the risk of electric shock, fire, or damage to the
equipment, do not plug telephone or telecommunications connectors
into this receptacle.

Contents ix
Compaq Confidential –Need to Know Required
Writer: Bruce Sullivan Project: Compaq Deskpro Workstation AP250 Maintenance and Service Guide Comments:
Part Number: 118133-001 File Name: a-frnt.doc Last Saved On: 10/26/99 2:34 PM
Any surface or area of the equipment marked with these symbols
indicates the presence of a hot surface or hot component. If this
surface is contacted, the potential for injury exists.
WARNING: To reduce the risk of injury from a hot component, allow
the surface to cool before touching.
Power Supplies or Systems marked with these symbols
indicate the equipment is supplied by multiple sources of
power.
WARNING: To reduce the risk of injury from electrical shock,
remove all power cords to completely disconnect power from
the system.
Rack Stability
WARNING: To reduce the risk of personal injury or damage to the equipment,
be sure that:
■The leveling jacks are extended to the floor.
■The full weight of the rack rests on the leveling jacks.
■The stabilizing feet are attached to the rack if it is a single rack installation.
■The racks are coupled together in multiple rack installations.
■A rack may become unstable if more than one component is extended for
any reason. Extend only one component at a time.

x Compaq Deskpro Workstation AP250 Maintenance and Service Guide
Compaq Confidential –Need to Know Required
Writer: Bruce Sullivan Project: Compaq Deskpro Workstation AP250 Maintenance and Service Guide Comments:
Part Number: 118133-001 File Name: a-frnt.doc Last Saved On: 10/26/99 2:34 PM
Getting Help
If you have a problem and have exhausted the information in this guide, you
can get further information and other help in the following locations.
Compaq Technical Support
You are entitled to free hardware technical telephone support for your product
for as long as you own the product. A technical support specialist will help
you diagnose the problem or guide you to the next step in the warranty
process.
In North America, call the Compaq Technical Phone Support Center at
1-800-OK-COMPAQ. This service is available 24 hours a day, 7 days a week.
For continuous quality improvement, calls may be recorded or monitored.
Outside North America, call the nearest Compaq Technical Support Phone
Center. Telephone numbers for worldwide Technical Support Centers are
listed on the Compaq website. Access the Compaq website at:
www.compaq.com
Be sure to have the following information available before you call Compaq:
■Technical support registration number (if applicable)
■Product serial numbers
■Product model names and numbers
■Applicable error messages
■Add-on boards or hardware
■Third-party hardware or software
■Operating system type and revision level
■Detailed, specific questions
Compaq Website
The Compaq website has information on this product as well as the latest
drivers and Flash ROM images. Access the Compaq website at:
www.compaq.com

Contents xi
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Writer: Bruce Sullivan Project: Compaq Deskpro Workstation AP250 Maintenance and Service Guide Comments:
Part Number: 118133-001 File Name: a-frnt.doc Last Saved On: 10/26/99 2:34 PM
Compaq Authorized Reseller
For the name of your nearest Compaq authorized reseller:
■In the United States, call 1-800-345-1518.
■In Canada, call 1-800-263-5868.
■Elsewhere, see the Compaq website for locations and telephone
numbers.

Compaq Confidential – Need to Know Required
Writer: Bruce Sullivan Project: Compaq Deskpro Workstation AP250 Maintenance and Service Guide Comments:
Part Number: 118133-001 File Name: b-ch1 Illustrated Parts Catalog.doc Last Saved On: 10/19/99 9:17 PM
Chapter 1
Illustrated Parts Catalog
This chapter provides an illustrated parts overview and a reference for spare
parts for the Compaq Deskpro Workstation AP250.

1-2 Compaq Deskpro Workstation AP250 Maintenance and Service Guide
Compaq Confidential –Need to Know Required
Writer: Bruce Sullivan Project: Compaq Deskpro Workstation AP250 Maintenance and Service Guide Comments:
Part Number: 118133-001 File Name: b-ch1 Illustrated Parts Catalog.doc Last Saved On: 10/19/99 9:17 PM
Mechanical Parts
59f
1
3
59g 59e 59d
2
59i
58a
Figure 1-1. Exploded view of the Compaq Deskpro Workstation AP250
mechanical parts