Compaq 133756-004 - Deskpro EN - 6550 Model 6400 Maintenance & Service Manual
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Summary of Contents for Compaq 133756-004 - Deskpro EN - 6550 Model 6400
- Page 1 Maintenance & Service Guide Compaq Deskpro EN Series of Personal Computers Small Form Factor Models...
- Page 2 The complete MSG follows this addendum. This addendum contains changes to the original document. 2000 Compaq Computer Corporation. COMPAQ and the Compaq logo Registered in U. S. Patent and Trademark Office. Product names mentioned herein may be trademarks and/or registered trademarks of their respective companies.
- Page 3 Spare Part Numbers Front Trim #219816-001 Spare Part Warranty Description Number Tier Front trim (below front bezel) (167113-002) Use only with 219816-001 system board 217056-001 without onboard audio System board without onboard audio (011035-101) 217056-001 Intel Celeron Processor 566 MHz/66 MHz with heatsink and retainer clip 203967-001 Graphics Controller nVIDIA TNT2 PRO, 16-MB SGRAM...
- Page 4 Specifications – Graphics Controller nVIDIA TNT2 Pro Graphics Controller Resolution Real-Time 3D Refresh Rate/Display Shading Vertical Horizontal 640 x 480 256, 65K, 16.7M 60 – 200 Hz 31 – 102 kHz 800 x 600 256, 65K, 16.7M 60 – 200 Hz 38 –...
- Page 5 Service Notes WARNING: Removing the heatsink from the processor destroys the integrity of the thermal interface pad between the two parts. Whenever the heatsink is removed from the processor, the old thermal interface must be completely removed and a new one installed in its place. Before installing a heatsink, prepare for its installation by doing one of the following: New heatsink: if the heatsink has a thermal interface attached to its bottom, peel off the protective paper before installing the heatsink.
- Page 6 Maintenance & Service Guide Compaq Deskpro EN Series of Personal Computers Small Form Factor Models...
- Page 7 THE FURNISHING, PERFORMANCE, OR USE OF THIS MATERIAL. This guide contains information protected by copyright. No part of this guide may be photocopied or reproduced in any form without prior written consent from Compaq Computer Corporation. 2000 Compaq Computer Corporation.
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Page 8: Table Of Contents
ONTENTS preface About This Guide Symbols and Conventions......................vii Technician Notes........................vii Locating Additional Information .....................viii chapter 1 Product Description 1.1 Product Features ......................1-2 1.1.1 Front Panel Controls and LEDs ................. 1-2 1.1.2 Rear Panel Connectors ..................1-3 1.1.3 Drive Positions ....................1-4 1.2 Serial Number Location.................... - Page 9 3.3 Service Considerations ....................3-5 3.3.1 Power Supply Fan ....................3-5 3.3.2 Tools and Software Requirements ..............3-5 3.3.3 Screws ........................ 3-5 3.3.4 Cables and Connectors ..................3-6 3.3.5 Hard Drives ......................3-6 3.3.6 Lithium Coin Cell Battery.................. 3-6 chapter 4 Removal &...
- Page 10 chapter 6 Specifications 6.1 System ..........................6-1 6.1.1 Specifications ..................... 6-1 6.1.2 System Interrupts ....................6-2 6.1.3 System DMA...................... 6-2 6.1.4 ICH Fixed I/O Registers..................6-3 6.1.5 System Memory Map ..................6-5 6.2 Drives..........................6-6 6.2.1 Diskette Drive ....................6-6 6.2.2 Ultra ATA Hard Drives..................
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Page 11: Symbols And Conventions
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. -
Page 12: Locating Additional Information
Locating Additional Information The following documentation is available to support these products: User Documentation Technical Training Guides Compaq Service Advisories and Bulletins Compaq QuickFind Technical Reference Guide Compaq Quick Reference Guide Compaq Service Reference Guide Compaq Quick Troubleshooting Guide viii... -
Page 13: Product Description
RODUCT ESCRIPTION This chapter describes the features of the Compaq Deskpro EN Small Form Factor Series of Personal Computers. Compaq Deskpro EN Series of Personal Computers... -
Page 14: Product Features
Product Features The Small Form Factor models ship with a mouse and keyboard. A Compaq color monitor or other compatible monitor, which is also required to operate the computer, must be purchased separately. 1.1.1 Front Panel Controls and LEDs Product Description... -
Page 15: Rear Panel Connectors
1.1.2 Rear Panel Connectors < Connectors include icons for ease of identification. Compaq Deskpro EN Series of Personal Computers... -
Page 16: Drive Positions
1.1.3 Drive Positions To verify the type, size, and capacity of the mass storage devices installed in the computer, run the F10 setup utility available at computer startup. Product Description... -
Page 17: Serial Number Location
Serial Number Location Provide the computer serial number to Compaq when requesting information or ordering spare parts. The serial number is displayed on the top of the computer cover at the right front corner and also on the side near the back of the computer. -
Page 18: Locating Additional Information
Locating Additional Information The following documentation is available to support these products: User Documentation Technical Training Guides Compaq Service Advisories and Bulletins Compaq QuickFind Technical Reference Guide Compaq Quick Reference Guide Compaq Service Reference Guide Compaq Quick Troubleshooting Guide Product Description... -
Page 19: Spare Parts
System Unit Spare Part Warranty Description Number Tier Computer cover 226774-001 Front bezel 201488-001 Expansion card cage Not spared Power supply, 120 W 176763-001 Chassis assembly, including drive cage Not spared Front trim 201487-001 Compaq Deskpro EN Series of Personal Computers... -
Page 20: Mass Storage Devices
Mass Storage Devices Spare Parts... -
Page 21: Cables
Cables Compaq Deskpro EN Series of Personal Computers... -
Page 22: Standard And Optional Boards
Standard and Optional Boards Spare Parts... -
Page 23: Keyboards
Keyboards Compaq Deskpro EN Series of Personal Computers... -
Page 24: Miscellaneous Plastics Kit
Miscellaneous Plastics Kit Spare Parts... -
Page 25: Miscellaneous Parts
Miscellaneous Parts Compaq Deskpro EN Series of Personal Computers... -
Page 26: Shipping Boxes
Shipping Boxes Documentation Spare Parts... -
Page 27: Electrostatic Discharge Information
3.1.1 Generating Static The following table shows that: Different activities generate different amounts of static electricity. Static electricity increases as humidity decreases. Relative Humidity Event ✎ 700 volts can degrade a product. Compaq Deskpro EN Series of Personal Computers... -
Page 28: Preventing Electrostatic Damage To Equipment
3.1.2 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, or boxes. -
Page 29: Recommended Materials And Equipment
Always turn off the computer when cleaning with liquids or damp cloths. Always turn off the computer before cleaning the keyboard, mouse, or air vents. Disconnect the keyboard before cleaning it. Wear safety glasses equipped with side shields when cleaning the keyboard. Compaq Deskpro EN Series of Personal Computers... -
Page 30: Cleaning The Computer Case
3.2.2 Cleaning the Computer Case Follow all safety precautions in Section 3.2.1 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. For stronger stains, use a mild dishwashing liquid diluted with water. -
Page 31: Cleaning The Mouse
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. -
Page 32: Cables And Connectors
3.3.4 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. -
Page 33: Removal & Replacement Procedures
CAUTION: When the computer is plugged into an AC power source, there is always voltage applied to the system board. You must disconnect the power cord from the power source before opening the computer to prevent system board or component damage. Compaq Deskpro EN Series of Personal Computers... -
Page 34: Disassembly Sequence Chart
Disassembly Sequence Chart Removal & Replacement Procedures... -
Page 35: Preparation For Disassembly
Keep all screws with the units removed. CAUTION: The screws used in the computer are of different thread sizes and lengths; using the wrong screw in an application may damage the unit. Compaq Deskpro EN Series of Personal Computers... -
Page 36: Unlocking The Smart Cover Lock
1. Prepare the computer for disassembly (Section 4.2). 2. Remove the two tamper-proof screws that secure the Smart Cover Lock to the chassis. Use the tamper resistant wrench (Compaq PN 166527-001) or the tamper resistant bit (Compaq PN 166527-002). Removal & Replacement Procedures... - Page 37 3. Remove the computer cover (Section 4.6). To reattach the Smart Cover Lock, secure the lock in place with the tamper-proof screws. Compaq Deskpro EN Series of Personal Computers...
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Page 38: Computer Feet
Computer Feet 1. Remove the four rubber feet mounted to the bottom of the chassis. 2. If necessary, scrape the residue of the old feet from the chassis using a small, flat- bladed screwdriver. 3. Remove the protective strip from the adhesive on the back of the new feet and press them into place. -
Page 39: Cable Lock Installation
✎ The cable lock can be purchased from Kensington Microware Limited or Compaq authorized dealers, resellers, and service providers. Ask for the Kensington MicroSaver Security System, Model 64068. Loop the cable around a heavy, fixed object to which you want to secure the computer. -
Page 40: Computer Cover
Computer Cover 1. Prepare the computer for disassembly (Section 4.2). CAUTION: Turn off the computer before disconnecting any cables. CAUTION: When the computer is plugged into an AC power source there is always voltage applied to the system board. You must disconnect the power cord from the power source before opening the computer to prevent system board or component damage. -
Page 41: Bezel Blank
1. Prepare the computer for disassembly (Section 4.2). 2. Remove the computer cover (Section 4.6). 3. Twist the tab on the left end of the bezel blank. 4. Remove the bezel blank from the front bezel. Compaq Deskpro EN Series of Personal Computers... -
Page 42: Drives
Drives The Small Form Factor has one 5.25-inch drive bay, one 3.5-inch diskette drive bay, and one hard drive bay. Refer to Chapter 5, “Connectors and Jumpers,” for the location of the ribbon cable connections on the system board. 4-10 Removal &... -
Page 43: 5.25-Inch Drive
To replace the drive, reverse the removal procedures. ✎ When replacing the drive, transfer the four screws from the old drive to the new one. The screws take the place of drive rails. Compaq Deskpro EN Series of Personal Computers 4-11... -
Page 44: Diskette Drive
4.8.2 Diskette Drive 1. Prepare the computer for disassembly (Section 4.2). 2. Remove the computer cover (Section 4.6). 3. Remove the 5.25-inch drive (Section 4.8.1). 4. Disconnect the power and data cables from the back of the drive 5. Pull the drive release latch away from the drive 6. -
Page 45: Hard Drive
To replace the drive, reverse the removal procedures. ✎ When replacing the hard drive, transfer the four screws from the old drive to the new one. The screws take the place of drive rails. Compaq Deskpro EN Series of Personal Computers 4-13... -
Page 46: Data Cable Installation
Data Cable Installation The data cables must be installed in the sequence shown to prevent damage. 4-14 Removal & Replacement Procedures... -
Page 47: Memory Expansion
Check the position of all cables and wires before raising or lowering the drive cage to prevent damage. 4. Locate the memory module sockets. WARNING: To reduce risk of personal injury from hot surfaces, allow the internal system components to cool before touching. Compaq Deskpro EN Series of Personal Computers 4-15... - Page 48 5. Open both latches of the memory module socket , and insert the memory module into the socket 6. Begin by installing a module into the socket nearest the preinstalled module, and install the modules following the numerical order of the sockets. 7.
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Page 49: Battery
In North America, dispose of nickel metal hydride or lithium-ion batteries by taking advantage of the Compaq battery recycling program. You will be provided with a postage-paid battery pack mailer preaddressed to a reclamation facility where the metals are recycled. Call the telephone number listed for your location in the Contacting Customer Support guide for more information. -
Page 50: Speaker Assembly
4.12 Speaker Assembly 1. Prepare the computer for disassembly (Section 4.2). CAUTION: When the computer is plugged into an AC power source, there is always voltage applied to the system board. You must disconnect the power cord from the power source before opening the computer to prevent system board or component damage. -
Page 51: Front Bezel
When removing the screws, the computer cover release latches will also come loose. 5. Remove the bezel from the computer cover. To replace the bezel, reverse the removal procedures. ✎ When replacing the front bezel, be sure to also replace the grounding straps. Compaq Deskpro EN Series of Personal Computers 4-19... -
Page 52: Expansion Card Cage Components
4.14 Expansion Card Cage Components 4.14.1 Expansion Card Cage 1. Prepare the computer for disassembly (Section 4.2). 2. Remove the computer cover (Section 4.6). 3. Pull the expansion card cage straight up to remove it from the chassis. To replace the expansion card cage, reverse the removal procedures. ✎... -
Page 53: Expansion Card
If you are installing an expansion card for the first time, remove the desired expansion card slot cover before installing the expansion card. The computer should automatically recognize the added Plug and Play expansion card. ✎ Windows NT does not have Plug and Play capability. Compaq Deskpro EN Series of Personal Computers 4-21... -
Page 54: Riser Board
4.14.3 Riser Board 1. Prepare the computer for disassembly (Section 4.2). 2. Remove the computer cover (Section 4.6). 3. Remove the expansion card cage (Section 4.14.1). 4. Remove any expansion cards (Section 4.14.2). 5. Disconnect any cables from the riser board. 6. -
Page 55: Easy Access Power Supply
5. Remove the screw that secures the power supply to the back of the chassis 6. Slide the back of the power supply toward the right , then lift the power supply out of the computer To replace the power supply, reverse the removal procedures. Compaq Deskpro EN Series of Personal Computers 4-23... -
Page 56: I/O Panel
4.16 I/O Panel 1. Prepare the computer for disassembly (Section 4.2). 2. Remove the computer cover (Section 4.6). 3. Remove the expansion card cage (Section 4.14.1). 4. Rotate the power supply to the upright position. 5. Unplug the I/O panel cable from the system board 6. -
Page 57: System Board
System Board ✎ More information on the system board, including troubleshooting criteria, can be found in the Compaq Quick Troubleshooting Guide (part number 153837-001) and the Compaq Service Reference Guide (part number 152611-001). 1. Prepare the computer for disassembly (Section 4.2). -
Page 58: Front Trim
4.18 Front Trim The front trim is the removable plastic piece located below the front bezel. 1. Prepare the computer for disassembly (Section 4.2). 2. Remove the computer cover (Section 4.6). 3. Remove the I/O panel (Section 4.16). 4. Rotate the drive cage to the upright position. 5. -
Page 59: Processors
7. Release the processor from the socket by pulling the handle on the ZIF socket out and upward 8. Lift the processor out of the socket Compaq Deskpro EN Series of Personal Computers 4-27... - Page 60 A Q-Tip dipped in alcohol can be used to clean both surfaces. Add thermal interface pad to the bottom of the heatsink before reinstalling the original heatsink to insure an efficient thermal interface. Use Compaq part number 210397-001 thermal interface pad.
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Page 61: Type 2 Processor Assembly
7. Release the processor from the socket by pulling the handle on the ZIF socket out and upward 8. Lift the processor out of the socket Compaq Deskpro EN Series of Personal Computers 4-29... - Page 62 A Q-Tip dipped in alcohol can be used to clean both surfaces. Add thermal interface pad to the bottom of the heatsink before reinstalling the original heatsink to insure an efficient thermal interface. Use Compaq part number 210397-001 thermal interface pad.
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Page 63: Connectors And Jumpers
This chapter provides connector and jumper information for system board jumpers, system I/O board connectors, riser board connectors and jumpers, and hard drives for the Small Form Factor models. System Board 5.1.1 Connectors and Jumpers - System Board 187499-001 Compaq Deskpro EN Series of Personal Computers... -
Page 64: Connectors And Jumpers - System Board 187500-001
5.1.2 Connectors and Jumpers - System Board 187500-001 Connectors and Jumpers... -
Page 65: Clearing Cmos
6. Run the Computer Setup utility to reconfigure the system. When the jumper is removed, both the power-on password and the setup password become invalid because both are stored in the configuration memory. You will need to reset the passwords. Compaq Deskpro EN Series of Personal Computers... -
Page 66: Disabling Or Clearing The Power-On And Setup Passwords
5.1.4 Disabling or Clearing the Power-On and Setup Passwords 1. Turn off the computer and any external devices, and disconnect the power cord from the power outlet. 2. Disconnect the keyboard, monitor, and any other external devices connected to the computer. -
Page 67: Cmos Archive And Restore (Power Switch Override)
The video display must be active before the computer can be powered off. CAUTION: Unplugging the power cord during POST can corrupt the splash screen. Flashing the ROM is required to restore the splash screen, although the computer will continue to function. Compaq Deskpro EN Series of Personal Computers... -
Page 68: Riser Board - Connectors And Jumpers
Riser Board – Connectors and Jumpers Connectors and Jumpers... -
Page 69: Hard Drive Jumper Settings
Seagate, Fujitsu, and Western Digital The drawings and tables below apply to a number of different size drives in the following paragraphs. Seagate, Fujitsu, and Western Digital Ultra ATA Hard Drive Jumper Settings Compaq Deskpro EN Series of Personal Computers... -
Page 70: Maxtor
5.3.2 Maxtor Maxtor Ultra ATA Hard Drive Jumper Settings Connectors and Jumpers... -
Page 71: Specifications
PECIFICATIONS This chapter provides physical, environmental, and performance specifications for the computer, keyboard, and mass storage devices. System 6.1.1 Specifications Compaq Deskpro EN Series of Personal Computers... -
Page 72: System Interrupts
6.1.2 System Interrupts 6.1.3 System DMA Specifications... -
Page 73: Ich Fixed I/O Registers
6.1.4 ICH Fixed I/O Registers continued Compaq Deskpro EN Series of Personal Computers... - Page 74 ICH Fixed I/O Registers cont. continued Specifications...
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Page 75: System Memory Map
ICH Fixed I/O Registers cont. 6.1.5 System Memory Map Compaq Deskpro EN Series of Personal Computers... -
Page 76: Drives
Drives 6.2.1 Diskette Drive Specifications... -
Page 77: Ultra Ata Hard Drives
6.2.2 Ultra ATA Hard Drives Compaq Deskpro EN Series of Personal Computers... -
Page 78: Cd-Rom Drive
6.2.3 CD-ROM Drive Specifications... -
Page 79: Keyboards
Keyboards Mouse Compaq Deskpro EN Series of Personal Computers... -
Page 80: Supported Graphics Resolutions
Supported Graphics Resolutions 6.5.1 Intel 3D Graphics (system board 187500-001) 6.5.2 nVIDIA TNT 3D AGP (system board 187499-001) 6-10 Specifications... -
Page 81: Chapter 7 Service Notes
If the heatsink is mounted improperly, the processor runs at a higher-than-normal temperature and the computer posts an immediate processor failure message (before the computer completes Power-On Self Test [POST]). If the Compaq DMI software is installed, the user receives a warning about any elevated temperature in the processor. - Page 82 The major core BIOS for the Deskpro EN is significantly changed from previous versions. Some of the key changes include: unique system ROM for models with integrated Intel graphics and models with integrated NVIDIA graphics detailed F10 Setup help text via the F1 key enhanced storage support from F10 Setup, including: "...
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Page 83: Index
Index activity light parallel, 1-3 eject button power cord, 1-3 CD-ROM drive, 1-2 diskette drive, 1-2 RJ-45, 1-3 diskette drive, 1-2 electrostatic discharge (ESD), 3-1 serial, 1-3 audio Ethernet RJ-45 connector, 1-3 connectors and jacks, 1-2 USB, 1-3 expansion card connectors and jumpers removal and replacement, 4-21 riser board, 5-6... - Page 84 diskette drive, 2-2 documentation, 2-8 Kensington lock, 4-7 Quick Troubleshooting Guide drives, 2-2 keyboard spare part number, 2-8, 4-25 hard drive, 2-2 cleaning, 3-4 keyboards, 2-5 connector, 1-3 memory, 2-4 spare part number, 2-5 miscellaneous plastics kit, 2-6 specifications, 6-9 removal and replacement Quick Troubleshooting Guide, 5.25-inch drive, 4-11...
- Page 85 201844-001 201579-002...
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