Professional Workstation SP750
Maintenance & Service Guide
Compaq Professional Workstation SP750
Part number 158722-003
Spare part number 164414-001
The complete MSG follows these addenda.
These addenda contain changes to the original document.
158772-001 1
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
Spare Part Number
Spare Part
Description Number
Intel Pentium III processor with heatsink (179616-002) and thermal film
(328614-001)
800 MHz/133-MHz with 256K cache 174642-001
866 MHz/133-MHz with 256K cache 180711-001
Intel Pentium III processor with heatsink (215610-002) and thermal film
(328614-001)
1-GHz/133 MHz 210399-001
Four-RIMM Memory Expansion Board 158285-001
Graphics Controllers
Intense3D Wildcat 4110, AGP 2X 166013-001
Intense3D Wildcat 4210, AGP Pro 202996-001
Matrox MGA-G400A, AGP 2x/4x 163361-001
Matrox G200 MMS 171975-001
nVIDIA TNT2 PRO, 16 MB SDRAM 179997-001
ELSA Gloria II AGP, 64 MB 174641-001
Graphics Adapter, DVI-i to VGA 202997-001
Hard Drives
20 GB 7200 RPM Hard Drive 180475-001
30 GB 7200 RPM Hard Drive, Quiet Drive 180477-001
36.2 GB Wide-Ultra 160 SCSI Hard Drive 180337-001
Other Drives
48X CD-ROM 187263-001
32X R-W CD-ROM 173747-001
LS-120 SuperDisk 209938-001
10X40X DVD-ROM 161430-001
Speaker w/cable 328730-001
Misc Cable Kit, includes: 327649-001
Diskette drive cable, long (269166-002)
Diskette drive cable, (269166-003)
Hard drive cable, 14" (242947-011)
Hard drive cable, 16" (242947-012)
Hard drive cable, 20" (269159-004)
Hard drive/CD-ROM cable, 22" (270847-008)
Hard drive/CD-ROM cable (270847-009)
CD-ROM audio cable, 18" (171891-009)
2 Addenda to MSG 158722-001
Specifications Graphics Controllers
Matrox MGA-G400A Graphics Controller
Maximum Display Resolution
Double buffering Double buffering
Graphics Double-buffering with 16-bit Z- with 32-bit Z-
memory Color palette* without Z-buffering buffering buffering
64 K colors (16-bit) 2048 x 1536 1800 x 1440 1600 x 1200
16 MB
16 M colors (32-bit) 1600 x 1200 1280 x 1024 1280 x 1024
64 K colors (16-bit) 2048 x 1536 2048 x 1536 2048 x 1536
32 MB
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.
Intense3D Wildcat 4110 Graphics Controller
Supported Resolutions Without Multisampling
bits per pixel
Aspect Ratio 96 128 160 192
4x3 1824x1368 1600x1200 1824x1368 1600x1200
(65 Hz) (75 Hz) (65 Hz) (75 Hz)
1280x1024 1280x1024 1280x1024 1280x1024
5x4
(85 Hz) (85 Hz) (85 Hz) (85 Hz)
2048x1152 1920x1080 2048x1152 1920x1080
16 x 9
(70 Hz) (75 Hz) (70 Hz) (75 Hz)
1920x1200 1824x1128 1920x1200 1824x1128
16 x 10
(70 Hz) (75 Hz) (70 Hz) (75 Hz)
1280x1024 N/A 1280x1024 N/A
5 x 4 Frame Sequential Stereo
(52 Hz) (52 Hz)
1280x960 (60 1152x864 (60 1280x960 (60 1152x864 (60
4 x 3 Frame Sequential Stereo
Hz) Hz) Hz) Hz)
Supported Resolutions with Multisampling
Aspect Ratio 128 bits per pixel 192 bits per pixel
4x3 1152x864 (85 Hz) 1024x768 (85 Hz)
N/A N/A
5x4
1360x766 (85 Hz) 1280x720 (85 Hz)
16 x 9
1280x800 N/A
16 x 10
800x600 (60 Hz) 800x600 (60 Hz)
4 x 3 Frame Sequential Stereo
158772-001 3
Specifications - Graphics Controllers (continued)
Intense3D Wildcat 4210 Graphics Controller
Supported Resolutions Without Multisampling
bits per pixel
Aspect Ratio 96 128 160 192
4x3 1920 x 1440 1920 x 1440 1920 x 1440 1920 x 1440
(60 Hz) (60 Hz) (60 Hz) (60 Hz)
1600 x 1280 1600 x 1280 1600 x 1280 1600 x 1280
5x4
(76 Hz) (76 Hz) (76 Hz) (76 Hz)
2048 x 1152 2048 x 1152 2048 x 1152 2048 x 1152
16 x 9
(75 Hz) (75 Hz) (75 Hz) (75 Hz)
1920 x 1200 1920 x 1200 1920 x 1200 1920 x 1200
16 x 10
(75 Hz) (75 Hz) (75 Hz) (75 Hz)
1280 x 1024 1280 x 1024 1280 x 1024 1280 x 1024
5 x 4 Frame Sequential Stereo
(60 Hz) (60 Hz) (60 Hz) (60 Hz)
128 0x 960 1280 x 960 1280 x 960 1280 x 960
4 x 3 Frame Sequential Stereo
(60 Hz) (60 Hz) (60 Hz) (60 Hz)
Supported Resolutions with Multisampling
Aspect Ratio 128 bits per pixel 192 bits per pixel
4x3 1600 x 1200 (85 Hz) 1360 x 1024 (85 Hz)
1600 x 1280 (76 Hz) 1280 x 1024 (94 Hz)
5x4
1920 x 1080 (85 Hz) 1600 x 900 (85 Hz)
16 x 9
1824 x 1128 (75 Hz) 1600 x 1024 (76 Hz)
16 x 10
1280 x 960 (60 Hz) 1280 x 960 (60 Hz)
4 x 3 Frame Sequential Stereo
4 Addenda to MSG 158722-001
Specifications - Graphics Controllers (continued)
ELSA Gloria II AGP Graphics Controller
Graphics Maximum Colors Maximum Refresh Memory Dedicated
Memory Supported Resolution Rate to Texture Support
64 MB 16.7M 640 x 480 120 Hz 60 MB
800 x 600 120 Hz 58 Mb
1024 x 768 120 Hz 54 MB
1152 x 864 100 Hz 52 MB
1280 x 800 100 Hz 52 MB
1280 x 960 100 Hz 49 MB
1280 x 1024 100 Hz 48 MB
1600 x 1000 100 Hz* 45 MB
1600 x 1000 85 Hz 45 MB
1600 x 1200 85 Hz 41 MB
1600 x 1280 85 Hz 40 MB
1600 x 1280 75 Hz 40 MB
1900 x 1080 85 Hz 39 MB
1920 x 1080 75 Hz 39 MB
1920 x 1200 85 Hz* 37 MB
1900 x 1200 75 Hz 37 MB
2048 x 1536 75 Hz 27 MB
* Refresh rate may function but may not be officially supported by Compaq.
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 60 - 200 Hz 31 102 kHz
800 x 600 60 - 200 Hz 38 114 Khz
1024 x 768 30 - 140 Hz 48 - 113 kHz
1152 x 864 60 - 120 Hz 54 - 110 kHz
1280 x 1024 60 - 100 Hz 64 - 107 kHz
1600 x 1200 60 - 90 Hz 75 - 13 kHz
1800 x 1440 60 - 70 Hz 89 - 1 04 kHz
32 MB 16:9/16:10 856 x 480 60 200 Hz 30 108 kHz
1280 x 720 60 100 Hz 44 76 kHz
1600 x 1024 60 - 100 Hz 64 108 kHz
1920 x 1080 60 - 80 Hz 70 94 kHz
1920 x 1200 60 - 76 Hz 75 95 kHz
158772-001 5
Compaq Professional Workstation SP750
Maintenance and Service Guide
Professional Workstation SP750
Maintenance and Service Guide
First Edition (January 2000)
Part Number 158722-001
Spare Part Number 164414-001
Compaq Computer Corporation
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.
2000 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, NetFlex, QuickFind, PaqFax, and ProSignia, registered United States Patent and Trademark
Office.
NeoServer, Netelligent, Systempro/XL, and SoftPaq, are trademarks and/or service marks of Compaq
Information Technologies Group, L.P. in the U.S. and/or other countries.
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 Professional Workstation SP750 Maintenance and Service Guide
Maintenance and Service Guide
First Edition (January 2000)
Part Number 158722-001
Spare Part Number 164414-001
Contents
About This Guide
Symbols in Text .......................................................................................................... vi
Compaq Technician Notes .......................................................................................... vi
Where to Go for Additional Help ..............................................................................vii
Telephone Numbers............................................................................................vii
Chapter 1
Product Description
Front Panel Components and LEDs......................................................................... 1-1
Rear Panel Connectors ............................................................................................. 1-4
Drive Positions......................................................................................................... 1-5
Serial Number Location ........................................................................................... 1-7
Chapter 2
Spare Parts
System Unit.............................................................................................................. 2-2
Mechanical Components................................................................................... 2-2
System Components ......................................................................................... 2-3
Memory .................................................................................................................... 2-5
Mass Storage Devices .............................................................................................. 2-7
Cable Kits................................................................................................................. 2-9
Graphic Controllers................................................................................................ 2-10
Network Controllers............................................................................................... 2-12
Input/Output Devices ............................................................................................. 2-13
Software and Miscellaneous .................................................................................. 2-14
Documentation ....................................................................................................... 2-14
Chapter 3
Removal and Replacement Preliminaries
Preliminaries ............................................................................................................ 3-1
iv Compaq Professional Workstation SP750 Maintenance and Service Guide
Removal and Replacement Preliminaries
continued
Electrostatic Discharge Information ........................................................................ 3-1
Generating Static............................................................................................... 3-2
Preventing Electrostatic Damage to Equipment ............................................... 3-2
Personal Grounding Methods and Equipment .................................................. 3-3
Grounding Workstations................................................................................... 3-3
Recommended Materials and Equipment ......................................................... 3-4
General Cleaning Safety Precautions................................................................ 3-4
Cleaning the Computer Case ............................................................................ 3-5
Cleaning the Keyboard ..................................................................................... 3-5
Cleaning the Monitor ........................................................................................ 3-6
Cleaning the Mouse .......................................................................................... 3-6
Service Considerations ..................................................................................... 3-6
Power Supply Fan............................................................................................. 3-6
Tools and Software Requirements .................................................................... 3-6
Screws ............................................................................................................... 3-7
Cables and Connectors...................................................................................... 3-7
Hard Drives....................................................................................................... 3-7
Lithium Coin Cell Battery ................................................................................ 3-7
Chapter 4
Removal and Replacement Procedures
Service Preparations................................................................................................. 4-2
Cable Lock ............................................................................................................... 4-3
Workstation Feet ...................................................................................................... 4-4
Side Access Panel .................................................................................................... 4-5
Front Bezel............................................................................................................... 4-6
Blank Drive Bezel.................................................................................................... 4-7
EMI/Cooling Shield ................................................................................................. 4-8
Power Supply Air Baffle.......................................................................................... 4-9
Mass Storage Devices ............................................................................................ 4-10
Drive Positions................................................................................................ 4-10
Hardware Screws ............................................................................................ 4-12
CD-ROM Drive .............................................................................................. 4-13
Diskette Drive ................................................................................................. 4-15
Removing a Hard Drive from Bays 5 or 6 ...................................................... 4-17
Removing a Hard Drive from the Removable Hard Drive Cage
in Bays 1 through 3......................................................................................... 4-20
Installing a Hard Drive in the Removable Hard Drive Cage
in Bays 1 through 3......................................................................................... 4-22
SCSI Cables and Guidelines .................................................................................. 4-25
Expansion Boards .................................................................................................. 4-26
Removing an Expansion Board ...................................................................... 4-27
Installing an Expansion Board ........................................................................ 4-28
Contents v
Removal and Replacement Procedures
continued
Memory Components............................................................................................. 4-30
Overview ......................................................................................................... 4-30
Removing a Memory Board ........................................................................... 4-31
RIMM Slot Locations ..................................................................................... 4-33
RIMM Slot Configurations ............................................................................. 4-34
Important Guidelines for RIMM Installation.................................................. 4-36
Installing a RIMM .......................................................................................... 4-36
Installing a Memory Board ............................................................................. 4-38
Removing an Ultra3 SCSI Controller ............................................................. 4-39
Accelerated Graphics Port Controller ............................................................. 4-40
Removing an AGP Graphics Controller ......................................................... 4-40
Processor ................................................................................................................ 4-42
Removing the Processor ................................................................................. 4-42
Installing an Additional Processor .................................................................. 4-43
Speaker ................................................................................................................... 4-45
Card Guide ............................................................................................................. 4-47
System Fan............................................................................................................. 4-49
Processor Cage....................................................................................................... 4-50
System Board ......................................................................................................... 4-51
Lithium Battery............................................................................................... 4-54
Power Switch and LED Cable Assembly............................................................... 4-56
Power Supply ......................................................................................................... 4-58
Chapter 5
Connectors, Jumpers, and Switches
Overview .................................................................................................................. 5-1
Disable and Clear Password Jumper ........................................................................ 5-2
CMOS Reset Switch ................................................................................................ 5-3
Mass Storage ............................................................................................................ 5-5
9.1-GB Ultra3 SCSI Hard Drive....................................................................... 5-5
18-GB Ultra3 SCSI Hard Drive........................................................................ 5-6
CD-ROM or DVD-ROM Drive ........................................................................ 5-7
Zip Drive........................................................................................................... 5-7
Chapter 6
Specifications
Overview .................................................................................................................. 6-1
System Unit.............................................................................................................. 6-2
Diskette Drive .......................................................................................................... 6-8
Zip Drive.................................................................................................................. 6-9
CD-ROM Drive ..................................................................................................... 6-13
DVD-ROM Drive .................................................................................................. 6-15
Hard Drives ............................................................................................................ 6-17
Audio System......................................................................................................... 6-20
Keyboard ................................................................................................................ 6-20
Mouse ..................................................................................................................... 6-21
Graphics Controllers .............................................................................................. 6-22
Network Controllers............................................................................................... 6-24
RJ-45 Network Cable Specifications .............................................................. 6-24
Index
About This Guide
This maintenance and service guide is a troubleshooting guide that can be used for reference
when servicing the Compaq Professional Workstation SP750.
WARNING: To reduce the risk of personal injury from electrical shock and hazardous energy
levels, only authorized service technicians should attempt to repair this equipment. Improper
repairs could create conditions that are hazardous.
IMPORTANT: The installation of options and servicing of this product shall be performed by individuals
who are knowledgeable of the procedures, precautions, and hazards associated with equipment
containing hazardous energy circuits.
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.
Compaq Technician Notes
WARNING: Only authorized technicians trained by Compaq should attempt to repair this
equipment. All troubleshooting and repair procedures are detailed to allow only
subassembly/module level repair. Because of the complexity of the individual boards and
subassemblies, no one should attempt to make repairs at the component level or to make
modifications to any printed wiring board. Improper repairs can create a safety hazard. Any
indications of component replacement or printed wiring board modifications may void any
warranty.
About this Guide vii
WARNING: To reduce the risk of personal injury from electrical shock and hazardous energy
levels, do not exceed the level of repair specified in these procedures. Because of the
complexity of the individual boards and subassemblies, do not attempt to make repairs at the
component level or to make modifications to any printed wiring board. Improper repairs could
create conditions that are hazardous.
WARNING: To reduce the risk of electric shock or damage to the equipment:
s If the system has multiple power supplies, disconnect power from the system by
unplugging all power cords from the power supplies.
s Do not disable the power cord grounding plug. The grounding plug is an important safety
feature.
s Plug the power cord into a grounded (earthed) electrical outlet that is easily accessible at
all times.
CAUTION: To properly ventilate your system, you must provide at least 12 inches (30.5 cm) of
clearance at the front and back of the computer.
CAUTION: The computer is designed to be electrically grounded. To ensure proper operation,
plug the AC power cord into a properly grounded AC outlet only.
Where to Go for Additional Help
In addition to this guide, the following information sources are available:
User Documentation
s
Compaq Service Reference Guide
s
Service Training Guides
s
Compaq Service Advisories and Bulletins
s
Compaq QuickFind
s
Compaq Insight Manager
s
Compaq Download Facility: Call 1-281-518-1418
s
Telephone Numbers
For the name of your nearest Compaq authorized reseller:
In the United States, call 1-800-345-1518
s
In Canada, call 1-800-263-5868
s
For Compaq technical support:
In the United States and Canada, call 1-800-386-2172
s
For Compaq technical support phone numbers outside the United States and Canada, visit
s
the Compaq website:
http://www.compaq.com
1
Chapter
Product Description
Front Panel Components and LEDs
This chapter describes the front and rear panel components, drive positions, and serial number
locations for the Compaq Professional Workstation SP750.
1-2 Compaq Professional Workstation SP750 Maintenance and Service Guide
Figure 1-1. Identifying front panel components
Product Description 1-3
Table 1-1
Front Panel Components
Item Component Description
1 Power On/Off LED After plugging the power cord into a grounded AC outlet and the
workstation, if the LED is:
Off--Workstation is ready to be powered up.
Steady Amber--Processor or memory board is not seated properly.
After pressing the power button, if the LED is:
Steady Green--Workstation is turned on, and the processor or
memory board is seated properly.
Blinking green--Workstation is in Standby mode.
2 Power button Turns the workstation on or off.
3 Hard drive activity LED When lit, indicates the workstation is reading or writing data to the
hard drive(s).
4 Network activity LED When lit, indicates the workstation is receiving or sending data on
the network.
5 Bay 4 5.25-inch, half-height drive bay, CD-ROM drive or DVD-ROM drive
6 Bay 5* 5.25-inch, half-height drive bay
7 Bay 6* 5.25-inch, half-height drive bay
8 Bay 7 3.5-inch, third-height drive bay, diskette drive
9 Speaker Premier Sound with fixed equalization
* An optional Zip drive can be installed in bay 5 or 6.
1-4 Compaq Professional Workstation SP750 Maintenance and Service Guide
Rear Panel Connectors
The following figure illustrates the location of the external connectors and jacks. See Table 1-2
for a description of each connector.
Figure 1-2. Identifying rear panel connectors
Table 1-2
Rear Panel Components
Item Component Item Component
1 8
Power cord connector Serial connector B
2 9
Ultra3 SCSI connector Mouse connector
3 -
Keyboard connector Serial connector A
4 ;
USB connectors (2) RJ-45 connector
5 <
Audio line-out connector Audio line-in connector
6 =
Headphone jack Microphone jack
7 >
Parallel connector VGA (AGP) connector
Product Description 1-5
Drive Positions
Your workstation supports up to seven individual drive bays. See Table 1-3 for a description of
the drive bay components.
Figure 1-3. Identifying drive bay components
1-6 Compaq Professional Workstation SP750 Maintenance and Service Guide
As shown in Figure 1-3, the workstation provides seven drive bays. Bays 1 through 3 are
located in the 3.5-inch removable hard drive cage, which is located behind the side access panel
of the workstation. Drive bays 4 through 7 are located on the front of the workstation. The
drives support various drive configurations.
Table 1-3
Drive Bay Components
Item Component Description
1 Bay 1 Part of the removable hard drive cage. A 3.5-inch, third-height bay that
supports a 1.0-inch hard drive or a 1.6-inch hard drive.
2 Bay 2 Part of the removable hard drive cage. A 3.5-inch, third-height bay that
supports a 1.0-inch hard drive. Bay 2 is not available when a 1.6-inch hard
drive is installed in either bay 1 or bay 3.
3 Bay 3 Part of the removable hard drive cage. A 3.5-inch, third-height bay that
supports a 1.0-inch hard drive or a 1.6-inch hard drive.
4 Bay 4 5.25-inch, half-height bay that supports 1.0-inch or 1.6-inch storage
devices. Either a CD-ROM drive or DVD-ROM drive is shipped in bay 4.
5 Bay 5* 5.25-inch, half-height bay that supports 1.0-inch or 1.6-inch storage
devices.
6 Bay 6* 5.25-inch, half-height bay that supports 1.0-inch or 1.6-inch storage
devices.
7 Bay 7 3.5-inch, third-height bay that supports a 1.0-inch device. A standard
3.5-inch diskette drive is shipped in bay 7.
* An optional Zip drive can be installed in bay 5 or 6.
Product Description 1-7
Serial Number Location
Provide the computer serial number to Compaq whenever you request information or order
spare parts. The serial number is located just above the right top side of the side access panel 2
and on the rear of the workstation 1.
For asset control, the serial number is also embedded in the Electrically Erasable Programmable
Read Only Memory (EEPROM) on the system board. If the system board is replaced with a
spare part from Compaq, an invalid serial number condition will be reported during the
Power-On Self-Tests (POST). To clear the condition, re-enter the original serial number through
Computer Setup.
NOTE: If a system board from another workstation is installed, POST recognizes the serial number as an
invalid number.
Figure 1-4. Serial number locations
2
Chapter
Spare Parts
This chapter illustrates and classifies parts for the Compaq Professional Workstation SP750. A
reference for spare parts also is provided.
2-2 Compaq Professional Workstation SP750 Maintenance and Service Guide
System Unit
Mechanical Components
Figure 2-1. Mechanical components for the Compaq Professional Workstation SP750
Table 2-1
Mechanical Components Spare Parts List
Item Description Spare Part Number
1 Workstation access panel 329263-001
2 Chassis N/A
3 Front bezel 338549-001
Spare Parts 2-3
System Components
Figure 2-2. System components for the Compaq Professional Workstation SP750
2-4 Compaq Professional Workstation SP750 Maintenance and Service Guide
Table 2-2
System Components Spare Parts List
Item Description Spare Part Number
1 425-watt power supply with Power Factor Correction (PFC) 116403-001
2 System board for the Compaq Professional Workstation SP750 158282-001
3 Intel Pentium III Xeon Processor, 667-MHz with a 133-MHz front-side bus 161669-001
4 Power switch and LEDs with cable (includes power cord) 161670-001
5 Battery 153099-001
6 90 mm fan 166922-001
7 Premier Sound desktop 5-watt speaker 158267-001
8 Intel Pentium III Xeon Processor, 733-MHz with a 133-MHz front-side bus 163362-001*
9 80 mm fan 158365-001*
- Compaq Professional Workstation SP750 Base Unit w/Pentium III Xeon 667 Hz 158282-001*
processor
q Compaq Professional Workstation SP750 Base Unit w/Pentium III Xeon 733 Hz 158282-001*
processor
The processor spares kit includes the heatsink assembly.
Note: Parts or components marked with an asterisk (*) are not illustrated.
Spare Parts 2-5
Memory
Figure 2-3. Memory components for the Compaq Professional Workstation SP750
2-6 Compaq Professional Workstation SP750 Maintenance and Service Guide
Table 2-3
Memory Spare Parts List
Item Description Spare Part #
1 64-MB ECC Direct Rambus Inline Memory Modules (RIMM) 600 MHz 157107-001
2 Continuity RIMM (CRIMM) 158265-001
3 Eight-RIMM Memory Expansion Board 158284-001
4 64-MB ECC Direct Rambus Inline Memory Modules (RIMM) 800-MHz 157108-001*
5 128-MB ECC Direct Rambus Inline Memory Modules (RIMM) 600-MHz 158264-001*
6 128-MB ECC Direct Rambus Inline Memory Modules (RIMM) 800-MHz 157112-001*
7 256-MB ECC Direct Rambus Inline Memory Modules (RIMM) 600-MHz 161453-001*
8 256-MB ECC Direct Rambus Inline Memory Modules (RIMM) 600-MHz 164539-001*
9 256-MB ECC Direct Rambus Inline Memory Modules (RIMM) 800-MHz 161454-001*
Note: Parts or components marked with an asterisk (*) are not illustrated.
Spare Parts 2-7
Mass Storage Devices
Figure 2-4. Mass storage devices for the Compaq Professional Workstation SP750
2-8 Compaq Professional Workstation SP750 Maintenance and Service Guide
Table 2-4
Mass Storage Device Spare Parts List
Item Description Spare Part #
1 18-GB Ultra3 SCSI hard drive (10,000 rpm) 160063-001
2 9-GB Ultra3 SCSI hard drive (10,000 rpm) 160062-001
3 1.44-MB diskette drive 158266-001
4 40X CD-ROM drive 400807-001
5 20-GB Ultra ATA/66 IDE hard drive (7,200 rpm) 158363-001*
6 6X DVD-ROM drive 401624-001*
7 250-MB ATAPI Zip drive (optional) 125776-001*
8 100-MB ATAPI Zip drive (optional) 401624-001*
9 10-GB Ultra ATA/66 hard drive (7,200 rpm) (no cable) 135364-001*
- 10-GB Ultra ATA/66 hard drive (7,200 rpm) (with cable) 135364-001*
q 13.5-GB Ultra ATA/66 hard drive (7,200 rpm) (with cable) 140515-001*
w 20-GB Ultra ATA hard drive (7,200 rpm) (with cable) 157403-001*
e 9-GB WU2 SCSI hard drive (7,200 rpm) 179288-001*
r 18-GB WU2 SCSI hard drive (7,200 rpm) 144577-001*
t 18-GB WU3 SCSI hard drive (10,000 rpm) 160063-001*
y 9-GB WU2 SCSI hard drive (7,200 rpm), 2nd 179288-001*
u 18-GB WU2 SCSI hard drive (7,200 rpm), 2nd 144577-001*
i 9-GB WU3 SCSI, hard drive (10,000 rpm), 2nd 160062-001*
o 18-GB WU3 SCSI hard drive (10,000 rpm), 2nd 160063-001*
Note: Parts or components marked with an asterisk (*) are not illustrated.
Spare Parts 2-9
Cable Kits
Figure 2-5. Cable kits for the Compaq Professional Workstation SP750
Table 2-5
Cable Kits Spare Parts List
Item Description Spare Part #
1 Miscellaneous cable kit 327649-001
2 Ultra2 SCSI five-device cable 402222-001
3 SCSI LVD twisted pair cable 164412-001*
4 Dual serial port cable 164536-001*
Note: Parts or components marked with an asterisk (*) are not illustrated.
2-10 Compaq Professional Workstation SP750 Maintenance and Service Guide
Graphic Controllers
Figure 2-6. Graphic controllers for the Compaq Professional Workstation SP750
Spare Parts 2-11
Table 2-6
Graphic Controllers Spare Parts List
Item Description Spare Part #
1 Matrox Productiva G100 Quad Multi-Monitor Series (PCI) 101239-001
2 PowerStorm 600 (enh-3D) 122926-001
3 3Dlabs Oxygen GVX1 (AGP) 146141-001
4 Matrox G400 Dual (AGP) (dual display, analog output) 400437-001
5 ELSA Synergy II 32-MB 4X AGP (entry-3D) 146140-001
6 3Dlabs Oxygen GVX1 PCI (mid-3D) 159629-001*
7 ELSA Synergy II 32 MB (NLX/AGP) 146535-001*
Matrox G400 16 MB (NLX/AGP) 400438-001*
Note: Parts or components marked with an asterisk (*) are not illustrated.
2-12 Compaq Professional Workstation SP750 Maintenance and Service Guide
Network Controllers
Figure 2-7. Network controllers for the Compaq Professional Workstation SP750
Table 2-7
Network Controllers/Audio/Modem Spare Parts List
Item Description Spare Part #
1 Netelligent 16/4 TR PCI UTP/STP Controller 268010-001
2 Compaq NC3121 Fast Ethernet NIC PCI, 10/100, Wake-on-LAN 323556-001
3 Compaq NC3120 Fast Ethernet NIC PCI, 10/100 317606-001*
4 Compaq NC3123 Fast Ethernet NIC PCI, 10/100, Wake-on-LAN 174831-001*
5 3COM 10/100 3C905C-TX NIC RSA 118042-001*
6 Intel PRO/100+ Management Adapter 116188-001*
7 Intel PRO/100+ Management Adapter AoL 116188-001*
8 ESS 1869 Audio Card 356081-001*
9 56K Fax Modem 269412-001*
Note: Parts or components marked with an asterisk (*) are not illustrated.
Spare Parts 2-13
Input/Output Devices
Table 2-8
Input/Output Devices Spare Parts List
Item Description Spare Part #
Keyboard and Mouse
1 Keyboard 269513-XXX*
2 Three-button mouse 327716-001*
3 Labtec Spaceball 4000 3D motion control input device (optional) 118029-001*
Monitors
4 P75 monitor 307806-XXX*
5 P1610 color monitor (Beach) 305708-XXX*
6 P1610 color monitor (Opal) 325500-XXX*
7 P110 monitor 325600-XXX*
8 V1000 color monitor 351756-XXX
9 V900 color monitor 303500-XXX
- V700 color monitor 325800-XXX
Note: Parts or components marked with an asterisk (*) are not illustrated.
2-14 Compaq Professional Workstation SP750 Maintenance and Service Guide
Software and Miscellaneous
Table 2-9
Software and Miscellaneous Spare Parts List
Item Description Spare Part #
Software
1 Microsoft Windows NT Workstation 4.0 CD 275573-xx1*
Miscellaneous
2 Shipping box with buns (U.S.) 166990-001*
3 Shipping box with buns International 166990-002*
Note: Parts or components marked with an asterisk (*) are not illustrated.
Documentation
Table 2-10
Documentation Spare Parts List
Item Description Spare Part #
1 Maintenance and Service Guide 164414-001*
2 Illustrated Parts Map 164413-001*
3 Service Quick Reference Guide (revision 040) 162212-001*
Note: Parts or components marked with an asterisk (*) are not illustrated.
3
Chapter
Removal and Replacement Preliminaries
Preliminaries
This chapter provides general service information for the computer. Adherence to the
procedures and precautions described in this chapter is essential for proper service.
CAUTION: When the computer is plugged into an AC power source, there is always voltage
applied to the system board. Disconnect the power cord from the power source before opening
the computer to prevent system board or component damage.
Electrostatic Discharge Information
A sudden discharge of static electricity from your finger or other conductor can destroy
static-sensitive devices or microcircuitry. Often the spark is neither felt nor heard, but damage
occurs. An electronic device exposed to electrostatic discharge (ESD) may not be affected at all
and can work perfectly throughout a normal cycle. The device may function normally for a
while, then degrade in the internal layers, reducing its life expectancy.
Networks built into many integrated circuits provide some protection, but in many cases, the
discharge contains enough power to alter device parameters or melt silicon junctions.
3-2 Compaq Professional Workstation SP750 Maintenance and Service Guide
Generating Static
The following table shows that:
Different activities generate different amounts of static electricity.
s
Static electricity increases as humidity decreases.
s
Table 3-1
Generating Static
Relative Humidity
Event 55% 40% 10%
Walking across carpet 7,500 V 15,000 V 35,000 V
Walking across vinyl floor 3,000 V 5,000 V 12,000 V
Motions of bench worker 400 V 800 V 6 ,000 V
Removing DIPs* from plastic tube 400 V 700 V 2,000 V
Removing DIPs* from vinyl tray 2,000 V 4,000 V 11,500 V
Removing DIPs* from Styrofoam 3,500 V 5,000 V 14,500 V
Removing bubble pack from PCB 7,000 V 20,000 V 26,500 V
Packing PCBs in foam-lined box 5,000 V 11,000 V 21,000 V
* Dual Inline Packaging (DIP) is the packaging around individual microcircuitry.
These are then multi-packaged inside plastic tubes, trays, or Styrofoam.
NOTE: 700 volts can degrade a product.
Preventing Electrostatic Damage to Equipment
Many electronic components are sensitive to ESD. Circuitry design and structure determine the
degree of sensitivity. The following proper packaging and grounding precautions are necessary
to prevent damage to electric components and accessories.
To avoid hand contact, transport products in static-safe containers such as tubes, bags,
s
or boxes.
Protect all electrostatic parts and assemblies with conductive or approved containers
s
or packaging.
Keep electrostatic sensitive parts in their containers until they arrive at static-free stations.
s
Place items on a grounded surface before removing them from their containers.
s
Always be properly grounded when touching a sensitive component or assembly.
s
Avoid contact with pins, leads, or circuitry.
s
Place reusable electrostatic-sensitive parts from assemblies in protective packaging or
s
conductive foam.
Removal and Replacement Preliminaries 3-3
Personal Grounding Methods and Equipment
Use the following equipment to prevent static electricity damage to equipment:
Wrist straps are flexible straps with a minimum of one-megohm +/- 10 percent resistance
s
in the ground cords. To provide proper ground, a strap must be worn snug against bare
skin. The ground cord must be connected and fit snugly into the banana plug connector on
the grounding mat or workstation.
Heel straps/Toe straps/Boot straps can be used at standing workstations and are
s
compatible with most types of shoes or boots. On conductive floors or dissipative floor
mats, use them on both feet with a minimum of one-megohm +/- 10 percent resistance
between the operator and ground.
Table 3-2
Static Shielding Protection Levels
Method Voltage
Antistatic plastic 1,500
Carbon-loaded plastic 7,500
Metallized laminate 15,000
Grounding Workstations
To prevent static damage at the workstation, use the following precautions:
Cover the workstation with approved static-dissipative material. Provide a wrist strap
s
connected to the work surface and properly grounded tools and equipment.
Use static-dissipative mats, foot straps, or air ionizers to give added protection.
s
Handle electrostatic sensitive components, parts, and assemblies by the case or PCB
s
laminate. Handle them only at static-free workstations.
Turn off power and input signals before inserting and removing connectors or test
s
equipment.
Use fixtures made of static-safe materials when fixtures must directly contact dissipative
s
surfaces.
Keep work area free of nonconductive materials such as ordinary plastic assembly aids
s
and Styrofoam.
Use field service tools, such as cutters, screwdrivers, and vacuums, that are conductive.
s
3-4 Compaq Professional Workstation SP750 Maintenance and Service Guide
Recommended Materials and Equipment
Materials and equipment that are recommended for use in preventing static electricity include:
Antistatic tape
s
Antistatic smocks, aprons, or sleeve protectors
s
Conductive bins and other assembly or soldering aids
s
Conductive foam
s
Conductive tabletop workstations with ground cord of one-megohm +/- 10 percent
s
resistance
Static-dissipative table or floor mats with hard tie to ground
s
Field service kits
s
Static awareness labels
s
Wrist straps and footwear straps providing one-megohm +/- 10 percent resistance
s
Material handling packages
s
Conductive plastic bags
s
Conductive plastic tubes
s
Conductive tote boxes
s
Opaque shielding bags
s
Transparent metallized shielding bags
s
Transparent shielding tubes
s
General Cleaning Safety Precautions
Never use solvents or flammable solutions to clean the computer.
s
Never immerse any parts in water or cleaning solutions; apply any liquids to a clean cloth
s
and then use the cloth on the component.
Always turn off the computer when cleaning with liquids or damp cloths.
s
Always turn off the computer before cleaning the keyboard, mouse, or air vents.
s
Disconnect the keyboard before cleaning it.
s
Wear safety glasses equipped with side shields when cleaning the keyboard.
s
Removal and Replacement Preliminaries 3-5
Cleaning the Computer Case
Follow all safety precautions in the "General Cleaning Safety Precautions" section in this
chapter before cleaning the computer.
To clean the computer case, follow the procedures described below:
To remove light stains or dirt, use plain water with a clean, lint-free cloth or swab.
s
For stronger stains, use a mild dishwashing liquid diluted with water. Rinse well by
s
wiping it with a cloth or swab dampened with clear water.
For stubborn stains, use isopropyl (rubbing) alcohol. No rinsing is needed as the alcohol
s
will evaporate quickly and not leave a residue.
After cleaning, always wipe the unit with a clean, lint-free cloth.
s
Occasionally clean the air vents on the computer. Lint and other foreign matter can block
s
the vents and limit the airflow.
Cleaning the Keyboard
Follow all safety precautions in the "General Cleaning Safety Precautions" section in this
chapter before cleaning the keyboard.
To clean the tops of the keys or the keyboard body, follow the procedures described in the
"Cleaning the Computer Case" section in this chapter.
When cleaning debris from under the keys, review all rules in section in the "General Cleaning
Safety Precautions" in this chapter before following these procedures:
CAUTION: Use safety glasses equipped with side shields before attempting to clean debris
from under the keys.
Visible debris underneath or between the keys may be removed by vacuuming or shaking.
s
Canned, pressurized air may be used to clean debris from under the keys. Caution should
s
be used as too much air pressure can dislodge lubricants applied under the wide keys.
If you remove a key, use a specially designed key puller to prevent damage to the keys.
s
This tool is available through many electronic supply outlets.
CAUTION: Never remove a wide leveled key (like the space bar) from the keyboard. If these
keys are improperly removed or installed, the keyboard may not function properly.
Cleaning under a key may be done with a swab moistened with isopropyl alcohol and
s
squeezed out. Be careful not to wipe away lubricants necessary for proper key functions.
Use tweezers to remove any fibers or dirt in confined areas. Allow the parts to air dry
before reassembly.
3-6 Compaq Professional Workstation SP750 Maintenance and Service Guide
Cleaning the Monitor
Wipe the monitor screen with a clean cloth moistened with water or with a towelette
s
designed for cleaning monitors. Do not use sprays or aerosols directly on the screen, the
liquid may seep into the housing and damage a component. Never use solvents or
flammable liquids on the monitor.
To clean the monitor body follow the procedures in the "Cleaning the Computer Case"
s
section in this chapter.
Cleaning the Mouse
Before cleaning the mouse, ensure that the power to the computer is turned off.
s
Clean the mouse ball by first removing the retaining plate and the ball from the housing.
s
Pull out any debris from the ball socket and wipe the ball with a clean dry cloth before
reassembly.
To clean the mouse body, follow the procedures in the "Cleaning the Computer Case"
s
section in this chapter.
Service Considerations
Listed below are some of the considerations that you should keep in mind during the
disassembly and assembly of the computer.
Power Supply Fan
The power supply fan is a variable-speed fan based on the temperature in the power supply.
CAUTION: The cooling fan is off only when the computer is turned off or the power cable has
been disconnected.
The cooling fan is always on in all other instances (when the computer is either in the "On,"
"Standby," or "Suspend" mode).
You must disconnect the power cord from the power source before opening the computer to
prevent system board or component damage.
Tools and Software Requirements
To service the computer, you need the following:
Torx T-15 screwdriver (Compaq screwdriver with bits PN 161946-001)
s
-inch wrench for the speaker nuts
s
Flat-bladed screwdriver (may sometimes be used in place of the Torx screwdriver)
s
Diagnostics software
s
Compaq tamper-resistant T-15 wrench (Smart Cover FailSafe Key, PN 166527-001) or
s
Compaq tamper-resistant bits (Smart Cover FailSafe Key, PN 166527-002)
Removal and Replacement Preliminaries 3-7
Screws
The screws used in the computer are not interchangeable. They may have standard or metric
threads and may be of different lengths. If an incorrect screw is used during the reassembly
process, it can damage the unit. Compaq strongly recommends that all screws removed during
disassembly be kept with the part that was removed, then returned to their proper locations.
NOTE: As each subassembly is removed from the computer, it should be placed away from the work
area to prevent damage.
Cables and Connectors
Most cables used throughout the unit are flat, flexible cables. These cables must be handled with
care to avoid damage. Apply only the tension required to seat or unseat the cables during
insertion or removal from the connector. Handle cables by the connector whenever possible. In
all cases, avoid bending or twisting the cables, and ensure that the cables are routed in such a
way that they cannot be caught or snagged by parts being removed or replaced.
CAUTION: When servicing this computer, ensure that cables are placed in their proper location
during the reassembly process. Improper cable placement can damage the computer.
Hard Drives
Handle hard drives as delicate precision components, avoiding all physical shock and
s
vibration. This applies to failed drives as well as replacement spares.
Use only the packaging provided by Compaq for shipping.
s
Do not remove hard drives from the shipping package for storage. Keep hard drives in
s
their protective packaging until they are actually mounted in the CPU.
Avoid dropping drives from any height onto any surface.
s
Lithium Coin Cell Battery
The battery that comes with the computer provides power to the real-time clock and has a
lifetime of about five years. When replacing the battery, use the appropriate 3-volt lithium coin
cell battery.
See Chapter 4, "Removal and Replacement Procedures," for instructions on the replacement
procedures.
WARNING: This computer contains a lithium-ion battery. There is a risk of fire and chemical
burn if the battery is handled improperly. Do not disassemble, crush, puncture, short external
contacts, dispose in water or fire, or expose the battery to temperatures higher than
140F (60C).
4
Chapter
Removal and Replacement Procedures
This chapter provides subassembly/module-level removal and replacement procedures for the
Compaq Professional Workstation SP750.
After completing all necessary removal and replacement procedures, run the Compaq Setup and
Diagnostics program to verify that all components are operating properly.
4-2 Compaq Professional Workstation SP750 Maintenance and Service Guide
Service Preparations
CAUTION: The power supply in the Compaq Professional Workstation SP750 has an auxiliary
power section. This section is always active as long as the unit is plugged into a live AC outlet.
Be sure to turn off the switch and unplug the power cord before performing any service work.
CAUTION: Electrostatic discharge can damage electronic components of the workstation.
Before beginning these procedures, be sure you are properly grounded. See Chapter 3,
"Removal and Replacement Preliminaries" for more information.
Before beginning any of the removal and replacement procedures, complete the following steps:
1. Turn off the workstation.
2. Disconnect the power cord from the grounded AC outlet and then from the workstation.
3. Turn off all peripheral devices and disconnect their cables from the rear of the workstation.
4. Remove the cable lock, if installed. See the next section for instructions.
NOTE: In some of the removal procedures in this chapter, you will be asked to place the workstation on
its side when servicing certain internal components.
NOTE: For more information on preparing the workstation for service, see Chapter 3, "Removal and
Replacement Preliminaries."
Removal and Replacement Procedures 4-3
Cable Lock
The workstation comes standard with a cable lock provision for attaching a padlock and/or cable
lock. If installed, the locks must be removed before accessing internal components.
To remove the lock:
1. Unlock and remove the cable lock or the padlock.
2. Remove the security bracket (plate) seated over the cable lock bracket.
3. Unfasten the retaining screw to release the cable lock bracket.
Figure 4-1. Removing the padlock
4-4 Compaq Professional Workstation SP750 Maintenance and Service Guide
Workstation Feet
NOTE: Not all procedures in this chapter require the removal of the workstation feet. Be sure to
thoroughly read each removal and replacement procedure before attempting to access any internal
components.
To remove the workstation feet:
1. Perform the steps in the "Service Preparations" section in this chapter, then place the
workstation on its side.
CAUTION: Before removing the side access panel, ensure that the workstation is turned off, all
cables are disconnected from the back of the workstation, and the power cord is disconnected
from the grounded AC outlet.
2. Remove the screws that secure the feet.
3. Remove the workstation feet.
Figure 4-2. Removing the workstation feet
| 101239-001
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