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Maintenance & Service Guide Compaq Deskpro EX and Deskpro EXS Series of Personal Computers Minitower Models...
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Maintenance & Service Guide Compaq Deskpro EX and Deskpro EXS Series of Personal Computers Minitower Models...
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All other product names mentioned herein may be trademarks or registered trademarks of their respective companies. Compaq shall not be liable for technical or editorial errors or omissions contained herein. The information in this document is subject to change without notice.
UIDE This Maintenance & Service Guide is a troubleshooting and repair guide that can be used for reference when servicing the Compaq Deskpro EX Series of Personal Computers Minitower Model. Only authorized technicians trained by Compaq should attempt to repair this equipment.
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...
RODUCT ESCRIPTION This chapter describes the model offerings and features of the Compaq Deskpro EX Series of Personal Computers Minitower Model. Compaq Deskpro EX and Deskpro EXS Series of Personal Computers...
Computer Features Compaq Deskpro EX Series of Personal Computers Minitower Model ships 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.
Serial Connector Parallel Port Connector Ref. Component Monitor Connector Headphone/Line-Out Audio Connector Serial Connector Line-In Audio Connector Microphone Connector Compaq Deskpro EX and Deskpro EXS Series of Personal Computers...
4, 5 Drive bay numbers are stamped on the chassis. To verify the type and size of the mass storage devices installed in the computer, run F10 Compaq Computer Setup. Product Description 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...
For the purpose of AssetControl, the serial number is embedded in CMOS and in the EEPROM on the system board and may be accessed through Diagnostics for Windows. If the system board is replaced with a spare part from Compaq, the invalid serial number condition will be recognized during POST. The original serial number must then be reentered through Computer Setup.
System Unit Description 1 Access panel 2 Front bezel 3 Chassis/basepan 4 Logo Kit (only minitower version-166806-002-used) 5 Power switch with cable, LED and switch holder 6 Feet 7 Power supply Spare Parts Spare Part Warranty Number Tier Not spared 166868-001 Not spared 166924-001...
(nn/nnnn) = hard drive transfer rate (MBytes/sec)/RPM Ultra ATA/100 hard drives are backwards compatible with Ultra ATA/66 devices; however, the data transfer rate is reduced to 66MB/sec. Spare Part Number 158266-001 187263-001 203139-001 202903-001 Compaq Deskpro EX and Deskpro EXS Series of Personal Computers Warranty Tier...
Cables Description Cable Kit includes: Single device, hard drive/CD-ROM cable, 18” (108950-019) Audio cable, 21” (387527-001) Single device, hard drive/CD-ROM cable, 12.5” (105876-001) Audio cable, 21”, (288489-002) (not used for this product) Single device, hard drive/CD-ROM cable, 9.75” (108950-021) Dual device, hard drive/CD-ROM cable, 18”, 10” to the first connector Power switch/LED cable Diskette drive cable...
4 10/100 PCI Network Interface Card 6 System Board *Not shown. Spare Part Number 182757-001 192012-001 170081-001 192014-001 203967-001 192011-001 192007-001 203968-001 192008-001 192009-001 192006-001 203969-001 188297-001 203966-001 Compaq Deskpro EX and Deskpro EXS Series of Personal Computers Warranty Tier...
6-19 x 1/2 Panhead, plastite screw (5 ea.) (101346-071) Thumbscrew, molded cap (4 ea.) (179333-002) Spare Part Number 123130-xxx -331 -351 -051 -B31 -091 -071 -101 -031 -001 Spare Part Number 179180-001 Compaq Deskpro EX and Deskpro EXS Series of Personal Computers Warranty Tier Warranty Tier...
400 V 700 V 2,000 V 2,000 V 4,000 V 11,500 V 3,500 V 5,000 V 14,500 V 7,000 V 20,000 V 26,500 V 5,000 V 11,000 V 21,000 V Compaq Deskpro EX and Deskpro EXS Series of Personal Computers...
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.
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 EX and Deskpro EXS Series of Personal Computers...
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.
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.
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.
4.18 Power Supply ROCEDURES Power Button Subpanel and Bezel Blanks Power Switch Assembly Removing an Internal 3.5-Inch Hard Drive Removing an External 5.25-Inch Drive Removing an External 3.5-Inch Drive Compaq Deskpro EX and Deskpro EXS Series of Personal Computers 4-1...
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 power supply even when the power switch is turned off.
The replacement feet have an adhesive surface and are shipped with a protective backing in place. Remove the backing from the feet before installation. If necessary, remove the old feet and remove any adhesive residue from the chassis. Compaq Deskpro EX and Deskpro EXS Series of Personal Computers 4-3...
Cable Lock To avoid injury, use care in handling the separated pieces of the cable lock WARNING: 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 provision, which consists of a three-piece security bracket.
3. Loosen the two thumbscrews that secure the access panel to the back of the computer chassis. 4. Slide the access panel backward approximately 1-inch (2.5-cm); then lift it up and off the unit. To replace the access panel, reverse the previous steps. Compaq Deskpro EX and Deskpro EXS Series of Personal Computers 4-5...
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 procedures.
5. Pinch the two tabs of the power button together and pull the button out of the front bezel. The spring will follow the button out of the housing. To replace the power button, reverse the above procedure. Compaq Deskpro EX and Deskpro EXS Series of Personal Computers 4-7...
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. WARNING: Power is continuous to the system board and power supply even when the power switch is turned off.
To install the new power switch, reverse the above procedure, pushing the switch assembly until it snaps into place. The power/LED connector is keyed to ensure proper installation. Compaq Deskpro EX and Deskpro EXS Series of Personal Computers 4-9...
4.10 Mass Storage Devices The Compaq Deskpro EX Series of Personal Computers support up to five drives in various configurations. Reference Drive Bay 1, 2 4, 5 Drive bay numbers are stamped on the chassis. To verify the type and size of the mass storage devices installed in the computer, run Computer Setup.
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Using the Cable-Select Feature with Ultra ATA Devices Optional drives are available from Compaq in kits that include a special drive cable. The configuration of the drives employs a cable-select feature that identifies the drives as device 0 (primary drive) or device 1 (secondary drive).
When installing a second ATA hard drive on the primary controller, you must use an 80-conductor ATA cable for optimal performance. The system automatically recognizes hard drives sold by Compaq (or any other plug and play hard drive) and will automatically reconfigure the computer. If you installed a third- party hard drive, or one that is not a plug and play device, you must run Computer Setup to reconfigure the computer.
4. Remove the bezel blank from the subpanel, if necessary (Section 4.8). 5. Reinstall the subpanel and the front bezel. The system automatically recognizes hard drives sold by Compaq (or any other plug and play hard drive) and will automatically reconfigure the computer. If you installed a third- party hard drive, or one that is not a plug and play device, you must run Computer Setup to reconfigure the computer.
4.10.3 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.
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Improper cable placement can damage the computer. 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 Deskpro EX and Deskpro EXS Series of Personal Computers 4-15...
Be sure not to scrape the card against other components 7. If not installing another expansion board in the slot, then close off the open slot by installing an expansion slot cover with a screw. Compaq Deskpro EX and Deskpro EXS Series of Personal Computers 4-17...
4.11.3 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 before beginning disassembly procedures.
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If installing a NIC board, attach the WOL power cable to connector P9 on the system board, if applicable. 8. Reassemble the computer. The computer should automatically recognize the added plug and play board. Compaq Deskpro EX and Deskpro EXS Series of Personal Computers 4-19...
4.12 System Memory The computer comes with synchronous dynamic random access memory (SDRAM) dual inline memory modules (DIMMs). The Intel 815 chipset comes with at least 64 MB of SDRAM DIMMS, upgradeable to 512 MB. DIMMs The memory sockets on the Intel 815 chipset–based system board can be populated with industry-standard DIMMs.
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When a memory module has been removed, moved, or added, Memory Change Alerts, a feature of Intelligent Manageability, alerts the system administrator and end user. The system automatically recognizes the added memory. Compaq Deskpro EX and Deskpro EXS Series of Personal Computers 4-21...
4.13 Graphics Cards 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. 4.13.1 Graphics Performance Accelerator (GPA)/AGP Inline Memory Module (AIMM) Card with a Type I Retention Mechanism...
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4. Insert the hook 1 on the left side of the GPA/AIMM card under the loop 2 on the left side of the retention mechanism. 5. Rotate the right side of the card down until it is at a 45 degree angle 3. Compaq Deskpro EX and Deskpro EXS Series of Personal Computers 4-23...
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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 expansion slot during installation.
5. Pull the arm on the right side of the retention mechanism. 6. Pull the card straight up to remove it from the expansion slot. To install the graphics card, reverse the above procedures. Compaq Deskpro EX and Deskpro EXS Series of Personal Computers 4-25...
4.13.3 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 for greater stability. 3. Remove the access panel (Section 4.5). 4.
5. Pull the arm on the right side of the retention mechanism. 6. Pull the card straight up to remove it from the expansion slot. To install the graphics card, reverse the above procedures. Compaq Deskpro EX and Deskpro EXS Series of Personal Computers 4-27...
4.13.5 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 for greater stability. 3. Remove the access panel (Section 4.5). 4. Remove the screw at the top of the expansion slot. 5.
WARNING: Removing the heatsink from the processor destroys the integrity of the thermal interface pad between the two. Whenever the heatsink is removed, the thermal interface pad must to be removed and a new one installed in its place. Compaq Deskpro EX and Deskpro EXS Series of Personal Computers 4-29...
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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. CAUTION: Thermal interface heat transmission is reduced if residue remains on the heatsink or processor, or the heatsink thermal interface surface is scratched.
8. Slide the board about ½ inch toward the front of the chassis to disengage the I/O panel, then lift it up and out of the chassis. To install a new system board, reverse the above procedures. Compaq Deskpro EX and Deskpro EXS Series of Personal Computers 4-31...
9. Reassemble the computer. 10. Reconnect the AC power cord and turn on the computer. 11. Reset the date and time, your passwords, and any special system setups, using Compaq Computer Setup. WARNING: This computer contains a lithium battery. There is a risk of fire and chemical burn if the battery pack is handled improperly.
4. Remove the four screws 2 that secure the fan to the chassis. 5. Remove the fan from the chassis 3. To install the fan assembly, reverse the above procedure. This fan is used in units with 866-933 MHz processors. Compaq Deskpro EX and Deskpro EXS Series of Personal Computers 4-33...
4.18 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 disassembly procedures.
AGP/AIMM Connector Power Supply Connector Power Button, Front Panel LED Cable Connector Diskette Drive Connector Aux Audio Connector UMPERS Compaq Deskpro EX and Deskpro EXS Series of Personal Computers SOS Connector Primary IDE Connector Secondary IDE Connector CPU Fan Connector P100...
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 push button switch SW50. To clear and reset the configuration, perform the following procedure: 1. Prepare the computer for disassembly (Section 4.2). CAUTION: The power cord must be disconnected from the power source before pushing the Clear CMOS Button (NOTE: All LEDs on the board should be OFF).
9. To re-enable the password features, repeat 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. Compaq Deskpro EX and Deskpro EXS Series of Personal Computers...
Hard Drive Jumper Settings 5.2.1 Seagate, Quantum, and Western Digital The drawings and tables below apply to a number of different size drives in the following paragraphs. Definition Seagate Single 7 - 8 Primary 5 - 6 and 7 - 8 Secondary No connection Cable Select 5 - 6...
50 to 95 F -4 to 140 F 20% to 80% 10% to 90% 10,000 ft 30,000 ft Compaq Deskpro EX and Deskpro EXS Series of Personal Computers 44.83 cm 16.76 cm 42.67 cm 11.8 kg 180-264 Vac 200-240 Vac...
6.1.2 System Interrupts Hardware IRQ 6.1.3 System DMA Hardware DMA Specifications 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 for PCI Mouse Coprocessor...
Reserved (power management) Reserved (GPIO management) Reserved (SMBUS controller) System Function System ROM PCI Memory Expansion HOST or PCI Memory Expansion System ROM PCI Option ROMs Video ROM Video RAM Base Memory Compaq Deskpro EX and Deskpro EXS Series of Personal Computers...
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...
6.2.3 CD-ROM Drives Compaq Spare Part Number Data Buffer (ms) Data Transfer Rate Access Time (ms) Random Full-Stroke Seek Cache Buffer Interface Disk Formats Read Disk Capacity Block Size Diameter Thickness Track Pitch Audio Output Level Line Out Headphone Startup Time...
-22 F to 140 F -30 C to 60 C 300 miles 483 km 1 million operations 1 million operations 10% to 90% 10% to 90% 20% to 80% 20% to 80% Compaq Deskpro EX and Deskpro EXS Series of Personal Computers...
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