Compaq 178910-009 Deskpro EN Series of Personal Computers Maintenance and Serv
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- Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 1
Maintenance & Service Guide Compaq Deskpro EN Series of Personal Computers Convertible Minitower Models - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 2
Addendum #1 to Deskpro EN Maintenance & Service Guide Compaq Deskpro EN Series of Personal Computers Convertible Minitower Part number 200803-002 Spare part number 201843-001 The complete MSG follows this addendum. This - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 3
Audio cover Spare Part Number 203967-001 179997-001 217055-001 203139-001 219817-001 Warranty Tier B B B B D ✎ System board 217055-001 does not support front-mounted audio. Computers with this board installed will not have a speaker mounted in the chassis but will have a piezo speaker mounted on - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 4
Specifications - Graphics Controller nVIDIA TNT2 Pro Graphics Controller Resolution Real-Time 3D Shading 640 x 480 800 x 600 1024 x 768 1152 x 864 1280 x 1024 1600 x 1200 1800 x 1440 1920 x 1080 1920 x 1200 256, 65K, 16.7M 256, 65K, 16.7M 256, 65K, 16.7M 256, 65K 256, 65K 256 65K 256 256/65K - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - 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 - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 6
Maintenance & Service Guide Compaq Deskpro EN Series of Personal Computers Convertible Minitower Models - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 7
agreement or nondisclosure agreement. The software may be used or copied only in accordance with the terms of the agreement. Maintenance & Service Guide Compaq Deskpro EN Series of Personal Computers Convertible Minitower Models Second Edition (September 2000) First Edition (June 2000) Part Number - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 8
CONTENTS preface About This Guide Symbols and Conventions ...vii Technician Notes ...vii Locating Additional Information viii chapter 1 Product Description 1.1 Model Overview ...1-2 1.2 System Design...1-2 1.3 Preinstalled Software ...1-3 1.3.1 Ordering Additional Software 1-3 1.4 Computer - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 9
Cleaning the Monitor 3-5 3.2.5 Cleaning the Mouse 3-5 3.3 Service Considerations...3-6 3.3.1 Power Supply Fan 3-6 3.3.2 Tools and Expansion Board 4-22 4.13.3 Installing a PCI Expansion Board 4-23 4.14 Board Guide ...4-25 4.15 Internal Speaker ...4-26 4.16 System Memory ...4-27 4.16.1 DIMMs - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 10
6.1.5 System Memory Map 6-5 6.2 Drives...6-6 6.2.1 1.44-MB Diskette Drive 6-6 6.2.2 Ultra ATA Hard Drives 6-7 6.2.3 CD-ROM Drives 6-8 6.3 Compaq Keyboards...6-9 6.4 2-Button Mouse...6-9 6.5 Supported Graphics Resolutions 6-10 6.5.1 Intel 3D Graphics 6-10 6.5.2 nVIDIA TNT 3D AGP 6-10 chapter - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 11
ABOUT THIS GUIDE This Maintenance & Service Guide is a troubleshooting and repair guide that can be used for reference when servicing the Compaq instructions. Technician Notes ! WARNING: Only authorized technicians trained by Compaq should attempt to repair this equipment. All troubleshooting - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 12
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 About This - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 13
1 chapter PRODUCT DESCRIPTION This chapter describes the model features of the Compaq Deskpro EN Series Convertible Minitower model of Personal Computers. Compaq Deskpro EN Series of Personal Computers 1-1 - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 14
bay. Extra guide screws are provided in the front of the chassis. ! The minitower model of this computer may be converted to a desktop configuration, or the desktop to a minitower. See Chapter 4, "Removal and Replacement Procedures," for additional information and instructions. Detailed descriptions - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 15
contains the following preloaded software: ! ROM-based Setup utilities ! Compaq Diagnostics for Windows ! Compaq support software and device drivers ! Online Safety & Comfort Guide (English only) ! Intelligent Manageability ! Power Management with Energy Saver features ! Security Management ! Remote - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 16
1.4 1.4.1 Computer Features Compaq Deskpro EN Series of Personal Computers ship with a mouse and keyboard. Some models are also equipped with a CD-ROM drive. A Compaq color monitor or other compatible monitor does not ship with the computer. Front Panel Controls and LEDs Ref. Component/Function - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 17
1.4.2 Rear Panel Connectors Ref. Component Ref. 1 Power Cord Connector 7 2 Voltage Select Switch (switches 8 voltage between 115V and 230V to match geographical requirements) 3 Universal Serial Bus (USB) 9 Connectors (2) (connects the computer to any USB peripheral while the computer is - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 18
1.4.3 Drive Positions Reference Drive Bay 1, 2 1, 2 3 3 4, 5 4, 5 Configuration Two standard 5.25-inch, half-height bays for optional drives One standard 3.5-inch, 1.44-MB diskette drive mounted with a drive adapter into a 5.25-inch bay Two standard 3.5-inch drive bays; Bay 4 contains the - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 19
will be recognized during POST. The original serial number must then be reentered through Computer Setup. Refer to the Software Reference Guide for more information. CAUTION: A system board borrowed from another computer is recognized as a valid serial number and will create a mismatch between - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 20
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 1-8 Product - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 21
2 chapter SPARE PARTS ✎ The Compaq Deskpro EN Series, Intel 815e chipset models will be referred to in this MSG as 815e. Compaq Deskpro EN Series of Personal Computers 2-1 - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 22
2.1 System Unit System Unit Spare Parts Description 1 Access panel 2 Front bezel 3 Chassis/basepan 4 Logo Kit, Deskpro EN (1 ea., DT and MT) 5 Power switch with cable, LED and switch holder 6 Feet 7 Power supply, 200 Watt Spare Part Number Not spared 166868-001 Not spared 210004-001 Not spared - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 23
2.2 Mass Storage Devices Mass Storage Devices Description 1 Diskette drive, 3.5-inch 2 48X Max tray load IDE CD-ROM drive 3 10.0-GB Ultra ATA hard drive (66/7200) * 15.0-GB Ultra ATA hard drive (66/7200) * 20.0-GB Ultra ATA hard drive (100/7200) *Not shown (nn/nnnn) = hard drive transfer rate ( - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 24
2.3 Cables Cables Description Cable Kit includes: Spare Part Number 166879-002 1 Diskette drive cable MEJD twist, 11, with pull tab, center polarization (143218-001) 2 40-position IDE data cable, 12.5 (105876-001) 4 IDE Ultra ATA dual device, hard drive/CD-ROM cable, 18, with pull tab, - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 25
2.4 Standard, Memory, and Expansion Boards Standard, Memory, and Expansion Boards Description 1 Nvidia 16MB SDRAM AGP Card Memory Module (SDIMM, 133 MHz) 2 64 MB * 128 MB * 256MB Intel Celeron Processor with heatsink and clip * 600/66 MHz Intel Pentium III Processor 3 667/133 MHz - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 26
2.5 Keyboards Keyboards (not illustrated) Description Easy Access Keyboard-US Spare Part Number 123130-xxx USB Easy Access Keyboard-US 173304-xxx Enhanced, Smart Card-US 125761-xxx Basic, Smart Card-US Spacesaver, Opal Arabic Belgian Brazilian BHCSY (Bosnia-Herzegovina, Croatia, Slovenia, - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 27
2.6 Miscellaneous Screw Kit Miscellaneous Screw Kit Description Miscellaneous Screw Kit, includes: * 6-32 x 1/4 hi-top, thread-forming screw with serrations (4 ea.) (192308-001) * 6-19 x 5/16 panhead, plastite screw (5 ea.) (101346-068) * 6-19 x .5/16 hi-top, taptite screw with captive - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 28
Plastics Kit Description Miscellaneous Plastics Kit, includes: 1 Panel, sub (166835-001) 2 Bezel, blank (166775-001) 3 Diskette bezel (166776-001) 4 Card guide (166778-001) 5 Foot, rubber (4 ea.) (166939-002) 6 Button, power (166774-001) 7 Drivelock, DT (166779-001) 8 Spring, power button (166837 - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 29
2.8 Miscellaneous Parts Miscellaneous Parts Description Spare Part Number 1 Battery 153099-001 2 Active fansink (for use with 800MHz+ processors) 191845-002 3 Mouse, scroll, opal 334689-002 4 Speaker with screws (40mm x 70mm, 12 inch) 192518-001 5 Fan assembly (for use on Pentium III - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 30
-002 2.10 Documentation and Software Documentation and Software (not illustrated) Description Maintenance & Service Guide (desktop & minitower) Illustrated Parts Map Service Reference Guide Quick Troubleshooting Guide Spare Part Number 201843-001 203722-001 152611-001 153837-001 2-10 Spare - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 31
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. You must disconnect the power - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 32
3.1.2 3.1.3 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 - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 33
such as ordinary plastic assembly aids and Styrofoam. ! Use field service tools, such as cutters, screwdrivers, and vacuums, that are Static-dissipative table or floor mats with hard tie to ground ! Field service kits ! Static awareness labels ! Wrist straps and footwear straps providing one-megohm - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 34
3.2 3.2.1 3.2.2 Routine Care General Cleaning Safety Precautions 1. Never use solvents or flammable solutions to clean the computer. 2. Never immerse any parts in water or cleaning solutions; apply any liquids to a clean cloth and then use the cloth on the component. 3. Always turn off the computer - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 35
3.2.3 3.2.4 3.2.5 Cleaning the Keyboard Follow all safety precautions in Section 3.2.1 before cleaning the keyboard. To clean the tops of the keys or the keyboard body, follow the procedures described in Section 3.2.2. When cleaning debris from under the keys, review all rules in Section 3.2.1 - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 36
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) ! Flat-bladed screwdriver (may sometimes be - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 37
or snagged by parts being removed or replaced. CAUTION: When servicing this computer, ensure that cables are placed in their proper about three years. See Chapter 4, "Removal and Replacement Procedures," for instructions on the replacement procedures. ! WARNING: This computer contains a lithium- - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 38
described in this chapter is essential for proper service. After completing all necessary removal and replacement procedures 4.12 Removing the Drivelocks ♦ 4.13.2 Removing an Expansion Board 4.14 Board Guide 4.15 Internal Speaker 4.16 System Memory 4.17 Graphics Cards 4.18 Processor 4.19 - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 39
4.2 Disassembly Preparation Before adding any internal options or performing a removal/replacement: 1. Remove any diskette, compact disc, or tape from the computer. 2. Turn off the computer and any peripheral devices that are connected to it. WARNING: Power is continuous to the system board and - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 40
Grasp the open side of the logo plate (left side if a desktop, bottom if a minitower) and pull outward 2. To install a new logo plate, align the guide pins in the slots 1, then press into place. ✎ When replacing the logo plate, ensure that the alignment pins are properly placed in the front bezel - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 41
4.5 Cable Lock WARNING: To avoid injury, use care in handling the separated pieces of the cable lock bracket; metal edges may be sharp. Be sure to install the bracket so that sharp edges do not extend from the edges of the computer chassis. Depending on the model, the computer includes a cable lock - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 42
4.6 Access Panel 1. Prepare the computer for disassembly (Section 4.2). WARNING: Power is continuous to the system board and power supply even when the power switch is turned off. To prevent damage to the unit, disconnect the power cord from the power source or the unit before beginning disassembly - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 43
4.7 Front Bezel 1. Prepare the computer for disassembly (Section 4.2). WARNING: Power is continuous to the system board and power supply even when the power switch is turned off. To prevent damage to the unit, disconnect the power cord from the power source or the unit before beginning disassembly - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 44
4.8 Power Button 1. Prepare the computer for disassembly (Section 4.2). WARNING: Power is continuous to the system board and power supply even when the power switch is turned off. To prevent damage to the unit, disconnect the power cord from the power source or the unit before beginning disassembly - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 45
4.9 Subpanel and Bezel Blanks The subpanel and bezel blanks must be removed from the front bezel if you are installing a mass storage device for the first time, or if you are converting the unit from a desktop to a minitower configuration or from a minitower to a desktop configuration. WARNING: - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 46
4.10 Power Switch CAUTION: The power switch should not be removed from the switch holder. Doing so may damage the switch components. 1. Prepare the computer for disassembly (Section 4.2). WARNING: Power is continuous to the system board and power supply even when the power switch is turned off. To - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 47
4.11 Mass Storage Devices The Compaq Deskpro EN Series of Personal Computers support up to five drives in various configurations. Reference Drive Bay 12 1, 2 3 3 45 4, 5 Drive Positions Configuration Two standard 5.25-inch, half-height bays for optional drives. - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 48
install either a third-height or a half-height drive into a half-height bay. ! You must install guide screws to ensure that the drive lines up correctly in the drive cage. Compaq has provided extra guide screws, which are installed in the front of the computer chassis, behind the front bezel. Some - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 49
4.11.1 Removing an Internal 3.5-Inch Hard Drive 1. Prepare the computer for disassembly (Section 4.2). WARNING: Power is continuous to the system board and power supply even when the power switch is turned off. To prevent damage to the unit, disconnect the power cord from the power source or the - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 50
screws from the drive. 9. Install two guide screws on each side of the replacement drive. ✎ Metric screws (M3) have a black finish while U.S. screws have a silver finish. Replace the 3.5-inch drive by reversing the above procedure. CAUTION: When servicing the computer, ensure that cables are placed - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 51
4.11.2 Removing an External 5.25-Inch Drive 1. Prepare the computer for disassembly (Section 4.2). WARNING: Power is continuous to the system board and power supply even when the power switch is turned off. To prevent damage to the unit, disconnect the power cord from the power source or the unit - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 52
, remove the drive from the drive bay. 7. Remove the four guide screws from the drive 1. To install a new drive: 1. Install two guide screws on each side of the replacement drive 1. 2. Ensure that the guide screws line up with the guide slots 2, then slide the drive into the drive bay until it - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 53
4.11.3 Removing an External 3.5-Inch Drive If you are installing a second 3.5-inch diskette drive into 5.25-inch bays #1 or 2 for the first time, you must use a special adapter bracket. If you are installing a 3.5-inch diskette drive into 5.25-inch bay #3, you must use a special adapter bracket. If - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 54
adapter until the diskette drive eject button is free of the button protector, then lift the drive out of the drive adapter. 11. Remove the guide screw from the right side of the drive. Compaq Deskpro EN Series of Personal Computers 4-17 - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 55
a black finish while U.S. screws (#6) have a silver finish. CAUTION: When servicing the computer, ensure that cables are placed in their proper locations during the . CAUTION: Use only 3/16-inch or 5-mm long screws as guide screws. Longer screws can damage the internal components of the drive. - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 56
1. Prepare the computer for disassembly (Section 4.2). WARNING: Power is continuous to the system board and power supply even when the power switch is turned off. To prevent damage to the unit, disconnect the power cord from the power source or the unit before beginning disassembly procedures. 2. - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 57
10. Press in on the tabs to release the vertical drivelock from the chassis, then lift it up and out of the system while at the same time rotating the drivelock slightly to clear the travel slots at the bottom of the drivelock. 11. Remove the spring from the post (see inset). To reinstall the - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 58
4.13 Expansion Boards 4.13.1 Expansion Board Slots 1 AGP graphics slot 2 PCI expansion slots Compaq Deskpro EN Series of Personal Computers 4-21 - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 59
4.13.2 Removing a PCI Expansion Board 1. Prepare the computer for disassembly (Section 4.2). WARNING: Power is continuous to the system board and power supply even when the power switch is turned off. To prevent damage to the unit, disconnect the power cord from the power source or the unit before - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 60
4.13.3 Installing a PCI Expansion Board 1. Prepare the computer for disassembly (Section 4.2). WARNING: Power is continuous to the system board and power supply even when the power switch is turned off. To prevent damage to the unit, disconnect the power cord from the power source or the unit - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 61
5. Hold the board at each end and carefully rock it back and forth while pushing downward, until the connectors fit completely and firmly into the expansion slot. 6. Secure the board to the chassis with the retaining screw. 7. Attach any cables that came with the board. ✎ If installing a NIC board, - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 62
Remove any full-length expansion boards (Section 4.13.2). 5. Push down on the two tabs on the side of the board guide. 6. While holding the tabs down, remove the guide from the chassis. To replace the board guide, reverse the above procedures. Compaq Deskpro EN Series of Personal Computers 4-25 - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 63
. 2. Lay the computer down on its large base (side with feet) for greater stability. 3. Remove the access panel (Section 4.6). 4. Remove the board guide (Section 4.14). 5. Disconnect the speaker cable from the system board 1. 6. Remove the four screws 2 that secure the speaker to the front of the - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 64
DIMMs must be industry-standard 168-pin, unbuffered PC100- or PC133- compliant SDRAM DIMMs, depending on the model. The SDRAM DIMMs must support CAS Latency 2 or 3 (CL = 2 or CL = 3). They must also contain the mandatory Joint Electronic Device Engineering Council (JEDEC) Serial Presence Detect (SPD - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 65
4. Open both latches of the memory module socket 1, and insert the memory module into the socket 2. Begin by installing a module into the socket nearest the preinstalled module, and install the modules following the numerical order of the sockets. A memory module can be installed in only one way. - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 66
4.17 Graphics Cards 4.17.1 The AGP expansion slot may come with a retention mechanism installed around it to hold the graphics cards securely in place. There are two different types of retention mechanisms that may be installed around the AGP expansion slot. Graphics Performance Accelerator (GPA)/ - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 67
Installing a GPA/AIMM Card WARNING: Power is continuous to the system board and power supply even when the power switch is turned off. To prevent damage to the unit, disconnect the power cord from the power source or the unit before beginning disassembly procedures. 1. Prepare the computer for - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 68
6. With the GPA/AIMM card at a 45 degree angle, slide the card toward the back of the expansion slot 4 until the fingers on the bottom of the card line up properly with the connectors in the expansion slot. CAUTION: The fingers on the bottom of the GPA/AIMM card must be properly aligned with the - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 69
4.17.2 AGP Card with a Type I Retention Mechanism Removing an AGP Card 1. Prepare the computer for disassembly (Section 4.2). 2. Lay the computer down on its large base (side with feet) for greater stability. 3. Remove the access panel (Section 4.6). 4. Remove the screw at the top of the expansion - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 70
4.17.3 GPA/AIMM Card with a Type 2 Retention Mechanism Removing a GPA/AIMM Card 1. Prepare the computer for disassembly (Section 4.2). 2. Lay the computer down on its large base (side with feet) for greater stability. 3. Remove the access panel (Section 4.6). 4. Pull the arm on the right side of the - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 71
4.17.4 AGP Card with a Type 2 Retention Mechanism Removing an AGP Card 1. Prepare the computer for disassembly (Section 4.2). 2. Lay the computer down on its large base (side with feet) for greater stability. 3. Remove the access panel (Section 4.6). 4. Remove the screw at the top of the expansion - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 72
4.17.5 Standard AGP Expansion Card Removing an AGP Card 1. Prepare the computer for disassembly (Section 4.2). 2. Lay the computer down on its large base (side with feet) for greater stability. 3. Remove the access panel (Section 4.6). 4. Remove the screw at the top of the expansion slot. 5. Remove - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 73
4.18 Processor Before installing a processor, make sure the release latches are in the locked position. This will cause the processor to make an audible sound when it is properly seated in the retaining clip. 1. Prepare the computer for disassembly (Section 4.2). 2. Lay the computer down on its - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 74
4.19 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). - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 75
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. In Europe, do not dispose of batteries with general household waste. Dispose of or recycle them by using the - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 76
4.21 Chassis Fan Assembly The Configurable Minitower (CMT) can have up to three fans in it. Every CMT has at least one fan that is integrated in the power supply. If the unit has a 800 MHz or higher processor, it will have a fan attached to the processor heatsink. If the CMT has a 933Mhz or higher - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 77
4.22 Power Supply 1. Prepare the computer for disassembly (Section 4.2). WARNING: Power is continuous to the system board and power supply even when the power switch is turned off. To prevent damage to the unit, disconnect the power cord from the power source or the unit before beginning - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 78
4.23 Converting a Desktop to a Minitower 1. Prepare the computer for disassembly (Section 4.2). WARNING: Power is continuous to the system board and power supply even when the power switch is turned off. To prevent damage to the unit, disconnect the power cord from the power source or the unit - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 79
6. Rotate the drives 90 degrees, then reinstall them into the drive bays. ✎ The diskette drive should always be placed in bay number 3, the bay nearest the internal 3.5-inch drives, for proper placement within the chassis. CAUTION: The use of unnecessary force may result in damage to the drives. 7. - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 80
4.24 Converting a Minitower to a Desktop 1. Prepare the computer for disassembly (Section 4.2). WARNING: Power is continuous to the system board and power supply even when the power switch is turned off. To prevent damage to the unit, disconnect the power cord from the power source or the unit - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 81
7. Rotate the drives 90 degrees, then reinstall them into the drive bays. ✎ The diskette drive should always be placed in the bay nearest the top of the chassis in the desktop configuration for proper drive clearance and access. CAUTION: The use of unnecessary force may result in damage to the - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 82
8. Reconnect the power, signal, and audio cables to the drives. 9. Remove the subpanel and rotate the bezel blanks 90 degrees (Section 4.9). CAUTION: Hold the subpanel straight when you pull it away from the front bezel. Pulling the subpanel away at an angle could damage the pins that align it - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 83
5 chapter CONNECTORS AND JUMPERS This chapter provides connect or, jumper, and switch information for system board jumpers, system I/O board connectors, and hard drives for the Convertible Minitower model. 5.1 System Board 5.1.1 Connectors and Jumpers CR28 CR29 CR31 CR32 E49 SW50 P1 P5(pins 1-9) P5 - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 84
5.1.2 Clearing CMOS The computer's configuration (CMOS) may occasionally be corrupted. If it does, it is necessary to clear the CMOS memory using jumper SW50. To clear and reset the configuration, perform the following procedure: 1. Prepare the computer for disassembly (Section 4.2). CAUTION: The - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 85
steps 1-4, then replace the jumper on pins 1 and 2. 10. Repeat steps 6-8, then establish new passwords. Refer to the Computer Setup (F10 Setup) instructions to establish new passwords. CMOS Archive and Restore (Power Switch Override) Each time the system starts, the system ROM saves a copy of NVRAM - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 86
5.2 5.2.1 Hard Drive Jumper Settings Seagate, Quantum, and Western Digital The drawings and tables below apply to a number of different size drives in the following paragraphs. Seagate, Quantum, and Western Digital Ultra ATA Hard Drive Jumper Settings Definition Seagate Single 7 - 8 Primary 5 - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 87
5.2.2 Maxtor Maxtor Ultra ATA Hard Drive Jumper Settings Definition Single Primary (in a dual-drive system) Secondary Cable Select Disabled* Enabled 4092 Cylinder Limitation Disabled* Enabled Factory Reserved Factory Reserved J50 J48 J46 J44 J42 J J O O J O J O O * = Default setting J = Jumper O - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 88
6 chapter SPECIFICATIONS 6.1 Specifications 6.1.1 System Dimensions Height Width Depth Weight (approximate, depending on configuration) Power Supply, 200 Watt Operating Voltage Range Rated Voltage Range Rated Line Frequency Rated Input Current Maximum Rated Power Environmental Requirements: - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 89
6.1.2 System Interrupts 6.1.3 Hardware IRQ 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 System Function Timer Interrupt Keyboard Interrupt Controller Cascade Serial Port (COM B) Serial Port (COM A) Audio Diskette Drive Parallel Port (LPT 1) Real-Time Clock Available for PCI Available for PCI Available - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 90
6.1.4 ICH Fixed I/O Registers Port 00h, 02h, 04h, 06h C0h, C4h, C8h, CCh 01h, 03h, 05h, 07h C2h, C6h, Cah, CEh 10h-1Fh 20h 21h 24h-25h, 28-29h, 2Ch-2Dh, 30h-31h, 34h-35h, 38h-39h, 3Ch-3Dh 40h 41h 42h 43h 50h-53h 61h 70h 71h 72h 73h 74h-75h 76h-77h 81h, 82h, 83h 84h-86h, 88h 89h, 8Ah, 8Bh 8CH-8Eh - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 91
ICH Fixed I/O Registers cont Port Register Name CF9h Reset Control Register A0h Slave PIC ICW1 Init. Cmd Word 1 Register Slave PIC OCW2 Op Ctrl Word 2 Register Slave PIC OCW3 Op Ctrl Word 3 Register A1 Slave PIC ICW2 Init. Cmd Word 2 Register Slave PIC ICW3 Init. Cmd Word 3 Register - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 92
ICH Fixed I/O Registers cont Port 1F0h-1F7h Register Name PIO Mode Command Block Offset for Primary Drive 376h PIO Mode Control Block Offset for Secondary Drive 3F6h PIO Mode Control Block Offset for Primary Drive 4D0h Master PIC Edge/Level Triggered Register 3F6h PIO Mode Control Block - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 93
6.2 Drives 6.2.1 1.44-MB Diskette Drive Size and Capacity Size (in) High Density (MB) Low Density (KB) Compaq Spare Part Number Light Drive Rotation (rpm) Height Bytes per Sector Sectors per Track (high/low density) Tracks per Side (high/low density) Read/Write Heads Cylinders (high/low density) - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 94
6.2.2 Ultra ATA Hard Drives Formatted Capacity Physical (MB) Logical (MB) Compaq Spare Part Number Total Logical Sectors Logical Geometry Cylinders Heads Sectors Physical Geometry Cylinders Heads Sectors Data Bytes/Sector Sector Interleave ECC Bytes Recording MethodEPR4 Spin-Up Time (maximum) - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 95
with multisession Operating Conditions Temperature Humidity 5 45 C 10-80% relative humidity Dimensions (mm) (HxWxD) 42.9x150.1x208 Weight (grams) 1200 MPEG Playback Graphics None Solution Support 6-8 Specifications - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 96
6.3 Compaq Keyboards Dimensions Height Width Depth Compaq Easy Access Compaq Enhanced 1.4 in 18.3 in 6.3 in 1.4 in 18.3 in 6.3 in Compaq Smart Card 1.4 in 18.3 in 6.3 in 6.4 2-Button Mouse Dimensions Height Length Width 1.34 in 4.45 in 2.36 in 3.4 cm 11.3 cm 6.0 cm Weight 4.59 oz 130 g - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 97
6.5 6.5.1 6.5.2 Supported Graphics Resolutions Intel 3D Graphics Colors 640 x 480 800 x 600 1024 x 768 1152 x 864 1280 x 1024 1600 x 1200 256 85 Hz 85 Hz 85 Hz - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 98
7 chapter SERVICE NOTES CAUTION: Use safety glasses equipped with side shields before attempting to clean debris from under the keys. 1. The new Intel 815e chipset in these models is a high-performance, flexible technology that also provides stability for future models. This chipset supports PIII - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 99
! detailed F10 Setup help text via the F1 key ! enhanced storage support from F10 Setup, including: " detailed device viewing information " choice of none means "diskette" device type. ! new F10 Setup device information ! service password that allows for back-door, power-on capability in the event a - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 100
, 4-29 B battery proper disposal, 4-38 removal and replacement, 4-38 spare part number, 2-9 bezel blank. See miscellaneous plastics kit board guide. See miscellaneous plastics kit removal and replacement, 4-25 boxes, shipping, 2-10 C cable lock removal and replacement, 4-4 cable select feature - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 101
Panel Connectors, 1-5 removal and replacement access panel, 4-5 battery, 4-38 board guide, 4-25 cable lock, 4-4 drivelocks, 4-18 expansion boards, 4-21 external 3-6 serial number need for service call, 1-3 serial number location, 1-7 service considerations, 3-6 service notes, 7-1 setup password, - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 102
sub-panel. See miscellaneous plastics kit subpanel and bezel blanks removal and replacement, 4-8 system design, 1-2 specifications, 6-1 system board connector locations, 5-1 connectors and jumpers, 5-1 spare part number, 2-5 system specifications DMA, 6-2 I/O, 6-3 memory map, 6-5 T tools required, - Compaq 178910-009 | Deskpro EN Series of Personal Computers Maintenance and Serv - Page 103
201843-001 200803-002
Compaq Deskpro EN Series
of Personal Computers
Convertible Minitower Models
Maintenance &
Service Guide