Compaq Presario A900 Compaq Presario A900 Notebook PC - Maintenance and Servic
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- Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 1
Compaq Presario A900 Notebook PC Maintenance and Service Guide - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 2
and Windows Vista are either trademarks or registered trademarks of Microsoft Corporation in the United States and/or other countries. SD Logo is a trademark of its proprietor. The information contained herein is subject to change without notice. The only warranties for HP products and services are - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 3
or clothing, to block airflow. Also, do not allow the AC adapter to contact the skin or a soft surface, such as pillows or rugs or clothing, during operation. The computer and the AC adapter comply with the user-accessible surface temperature limits defined by the International Standard for Safety - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 4
iv Safety warning notice - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 5
listing 23 4 Removal and replacement procedures Preliminary replacement requirements 27 Tools required ...27 Service considerations 27 Plastic parts 27 Cables and connectors 28 Drive handling 28 Grounding guidelines 29 Electrostatic discharge damage 29 Packaging and transporting guidelines - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 6
Equipment guidelines 31 Unknown user password 32 Component replacement procedures 33 Serial number ...33 Computer feet ...33 Battery ...34 Camera module ...35 Hard drive ...37 Memory module ...39 WLAN module ...41 Optical drive ...44 Switch cover and keyboard 46 Display assembly ...50 Top cover - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 7
from the partition on the hard drive 102 9 Connector pin assignments Audio-out (headphone) ...103 Audio-in (microphone) ...103 External monitor ...104 RJ-11 (modem) ...105 RJ-45 (network) ...106 S-Video-out ...107 Universal Serial Bus ...108 10 Power cord set requirements Requirements for all - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 8
viii - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 9
Category Product Name Processors Chipset Description Computers equipped with 965GM system board Computers equipped with 960GL system board Compaq Presario A900 Notebook PC √ √ Intel® Core™ 2 Duo processors: T7250 2.00-GHz processor, 800-MHz FSB, 2-MB √ L2 cache T5550 1.80-GHz processor - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 10
on computer models equipped with Windows Vista™ Basic) ● 1024-MB total system memory (512 × 2, dualchannel) ● 512-MB total system memory (512 × 1, only on computer models equipped with Windows Vista Basic) Supports 9.5-mm, 2.5-inch hard drives √ √ Customer-accessible √ √ Serial ATA (SATA - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 11
and CD-RW Super Multi Double-Layer Combo Drive Supports external USB diskette drive only √ √ VGA camera, 30 frames per second √ √ Integrated omnidirectional mono microphone √ √ High-definition, Azalia technology audio √ √ 2 Presario-branded Altec/Lansing speakers √ √ 56K V.92 38.1-mm - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 12
as default 65-W AC adapter with localized cable plug support 6-cell, 2.20-Ah (47-Wh) Li-ion battery Security cable slot Preinstalled: Windows Vista Premium 32 Windows Vista Home Basic 32 End-user replaceable parts: AC adapter Battery (system) Hard drive Memory module Optical drive WLAN module - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 13
, refer to the section of the Regulatory, Safety and Environmental Notices that applies to your country or region. These notices are located in Help and Support. Display components 5 - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 14
An integrated wireless device is turned off. Blinking: The hard drive or optical drive is being accessed. ● On: A battery is charging. ● Blinking: A battery that is the only available power source has reached a low battery level or a critical battery level. ● Off: If the computer is plugged into an - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 15
. If the computer has stopped responding and Windows® shutdown procedures are ineffective, press and hold the power button for at least 5 seconds to turn off the computer. To learn more about power settings, select Start > Control Panel > System and Maintenance > Power Options. On: Num lock is on or - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 16
Keys Item (1) Component fn key (2) esc key (3) Function keys (4) Integrated numeric keypad keys (5) Windows applications key (6) Windows logo key Function Executes frequently used system functions when pressed in combination with a function key or the esc key. Displays system - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 17
external mouse. (6) TouchPad vertical scroll zone Scrolls up or down. (7) TouchPad on/off button Enables/disables the TouchPad. *This table describes factory settings. To view and change pointing device preferences, select Start > Control Panel > Hardware and Sound > Mouse. Top components 9 - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 18
when connected to optional powered stereo speakers, headphones, ear buds, a headset, or television audio. Connects an optional computer discs and on select models also writes to optical discs. Blinking: The optical drive is being accessed. Attaches an optional security cable to the computer. NOTE: - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 19
Left-side components Item (1) (2) Component Power connector Vent (3) RJ-11 (modem) jack (4) RJ-45 (network) jack (5) External monitor port (6) S-Video-out jack (7) Digital Media Slot (8) USB port Function Connects an AC adapter. Enables airflow to cool internal components. NOTE: The - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 20
latch Vents (3) (4) Memory/WLAN module compartment (5) Hard drive bay Function Holds the battery. Releases the battery from the battery bay. Enable airflow to cool internal components. NOTE: The computer fan starts up automatically to cool internal components and prevent overheating. It is - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 21
3 Illustrated parts catalog Serial number location When ordering parts or requesting information, provide the computer serial number and model number located on the bottom of the computer. Serial number location 13 - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 22
Computer major components 14 Chapter 3 Illustrated parts catalog - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 23
more display assembly component spare part information. (2) Switch cover (includes wireless button board and cable, power button board and cable, 462399 for more Plastics Kit spare part information) 462409-001 Memory/WLAN module compartment cover Hard drive cover Digital media board 462402- - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 24
M 530 1.73-GHz processor (533-MHz FSB, 1-MB L2 cache) Spare part number 457313-001 454322-001 454321-001 457315-001 RTC battery 449137-001 Heat sink (includes replacement thermal material) 462405-001 Power connector cable 462403-001 Base enclosure (includes rubber feet) 462400-001 Rubber - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 25
Item Description Spare part number San Marino, Sao Tome and Principe, Saudi Arabia, Senegal, Serbia and Montenegro, the Seychelles, Sierra Leone, Singapore, Slovakia, Slovenia, the Solomon Islands, Somalia, South - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 26
Yemen, Zaire, Zambia, and Zimbabwe Intel 802.11b/g WLAN module for use in Thailand 451861-004 Memory modules (PC2-5300, 667-MHz, DDR2) 1024-MB 462330-001 512-MB 462329-001 Hard drives (include hard drive bracket and SATA connector) 160-GB, 5400-rpm 462333-001 120-GB, 5400-rpm 462332-001 - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 27
Display assembly components Item Description Spare part number (1) Display bezel (includes Compaq logo, and camera lens) 462391-001 (2) Display Bracket Kit (not illustrated, includes display panel top and bottom support brackets) 462396-001 Display Rubber Kit (not illustrated, includes display - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 28
Plastics Kit Item Description Spare part number Plastics Kit: 462409-001 (1) Memory/WLAN module compartment cover (includes one captive screw, secured by a C-clip) (2) Hard drive cover (includes 2 captive screws, secured by C-clips) 20 Chapter 3 Illustrated parts catalog - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 29
±RW and CD-RW Super Multi Double-Layer Combo Drive with LightScribe DVD±RW and CD-RW Super Multi Double-Layer Combo Drive (2) Hard drives (include hard drive bracket and screws and SATA connector) 160-GB, 5400-rpm 120-GB, 5400-rpm Spare part number 462336-001 462335-001 462333-001 462332-001 - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 30
Miscellaneous parts Description 65-W AC adapter Power cords: For use in Australia For use in Europe For screw ● Phillips PM2.5×6.0 captive screw ● Phillips PM2.5×5.0 screw ● Phillips PM2.0×4.0 screw Spare part number 417220-001 383496-011 383496-021 383496-D61 383496-061 383496-031 383496-001 462408 - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 31
-001 Power cord for use in the United States 383496-011 Power cord for use in Australia 383496-021 Power cord for use in Europe 383496-031 Power cord for use in the United Kingdom 383496-061 Power cord for use in Italy 383496-D61 Power cord for use in India 417220-001 65-W AC adapter 441075 - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 32
Uruguay, Uzbekistan, Vanuatu, Venezuela, Vietnam, Yemen, Zaire, Zambia, and Zimbabwe 449137-001 RTC battery 450586-001 Intel Core 2 Duo T7100 1.80-GHz processor (800-MHz FSB, 2-MB L2 , Belgium, Belize, Benin, Bermuda, Bhutan, Bolivia, Bosnia and Herzegovina, 24 Chapter 3 Illustrated parts catalog - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 33
-5300, 667-MHz, DDR2) 462330-001 1024-MB memory module (PC2-5300, 667-MHz, DDR2) 462331-001 Hard Drive Hardware Kit (includes hard drive bracket and screws and hard drive SATA connector) 462332-001 120-GB, 5400-rpm hard drive (includes hard drive bracket and SATA connector) 462333-001 160-GB, 5400 - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 34
and cable, and Compaq logo) 462391-001 Display bezel (includes Compaq logo, and camera and cable) 462402-001 Digital media board 462403-001 Power connector cable 462404-001 Fan 462405-001 Heat sink ( Kit on page 20 for more Plastics Kit spare part information) 462410-001 Rubber Foot Kit (includes 7 - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 35
● Phillips P0 and P1 screwdrivers Service considerations The following sections include some parts Using excessive force during disassembly and reassembly can damage plastic parts. Use care when handling the plastic parts. Apply pressure only at the points designated in the maintenance instructions - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 36
parts being removed or replaced. Handle flex cables with extreme care; these cables tear easily. Drive handling CAUTION: Drives are drives from any height onto any surface. After removing a hard drive, an optical drive, or a diskette drive, place it in a static-proof bag. Avoid exposing a hard drive - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 37
determine the degree of sensitivity. Networks built into many integrated circuits provide some protection, but in many cases, ESD contains enough power to alter device parameters or melt silicon junctions. A discharge of static electricity from a finger or other conductor can destroy static - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 38
parts and assemblies with conductive or approved containers or packaging. ● Keep ESD-sensitive parts in their containers until the parts ESD-sensitive parts from assemblies in ● Use conductive field service tools, such as cutters ● Handle ESD-sensitive components, parts, and assemblies by the case - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 39
straps are flexible straps with a minimum of one megohm ±10% resistance in the ground cords. To provide proper ground, wear a strap snugly against the skin at all times. ground cords of one megohm resistance ● Static-dissipative tables or floor mats with hard ties to the ground ● Field service kits - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 40
password If the computer you are servicing has an unknown user password, follow these steps to clear the Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 41
7 different sizes, that must be removed, replaced, or loosened when servicing the computer. Make special note of each screw size and location during . Serial number Report the computer serial number to HP when requesting information or ordering spare parts. The serial number is located on the bottom - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 42
, 2.20-Ah (47-Wh) Li-ion battery Spare part number 462337-001 Before disassembling the computer, follow these steps: 1. Shut Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer. Remove the battery: 1. - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 43
power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery The rubber screw covers are available in the Display Rubber Kit, spare part number 462397-001. 4. Flex the inside edge of the top - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 44
6. Separate the display bezel top edge (3) from the display assembly to access the camera module. 7. Remove the two Philllips PM2.0×3.0 screws (1) that secure the camera module to the display enclosure. 8. Release the camera module (2) as far from the display enclosure as the camera module cable - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 45
devices connected to the computer. 3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 34). Remove the hard drive: 1. Position the computer with the front - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 46
5. Remove the hard drive (3) from the hard drive bay. 6. If it is necessary to replace the hard drive bracket, remove the two Phillips PM3.0×4.0 hard drive bracket screws (1) from each side of the hard drive. 7. Lift the bracket (2) straight up to remove it from the hard drive. Reverse this - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 47
MHz, DDR2) Spare part number 462330-001 462329-001 Before removing the memory module, follow these power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 34). Remove the memory - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 48
4. Remove the memory module (2) by pulling the module away from the slot at an angle. NOTE: Memory modules are designed with a notch (3) to prevent incorrect installation into the memory module slot. Reverse this procedure to install a memory module. 40 Chapter 4 Removal and replacement procedures - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 49
WLAN module Description Spare part number Intel 802.11a/b/g/n WLAN modules: ● For use in use in Antigua and Barbuda, Argentina, Aruba, the Bahamas, Barbados, Bermuda, 441086-001 Brunei, Canada, the - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 50
Description Spare part number Atheros AR2425 802.11b/g WLAN modules: ● For use in Canada, the Cayman Islands, Guam Puerto Rico the U.S. Virgin Islands, and the United 459339-001 - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 51
computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 34). Remove the WLAN module: 1. Loosen the two Phillips PM2.5×6.0 captive screws (1) that secure the memory/WLAN module compartment cover to - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 52
devices connected to the computer. 3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 34). Remove the optical drive: 1. Position the computer with the left - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 53
If it is necessary to replace the optical drive bracket, position the optical drive with the rear toward you. 6. Remove the two Phillips PM2.0×4.0 screws (1) that secure the optical drive bracket to the optical drive. 7. Remove the optical drive bracket (2). Reverse this procedure to reassemble and - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 54
United Kingdom 462383-061 The United States 462383-B31 Spare part number 462383-171 462383-071 462383-141 462383-031 462383-001 power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 55
Remove the switch cover and keyboard: 1. Remove the following: (1) Four Phillips PM2.5×9.0 screws that secure the switch cover to the computer (2) One Phillips PM2.5×9.0 screw that secures the keyboard to the computer (3) Six Phillips PM2.5×5.0 screws that secure the switch cover to the computer 2. - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 56
6. Remove the three Phillips PM2.0×4.0 screws that secure the keyboard to the computer. 7. Lift the rear edge of the keyboard (1) until it rests at angle. 8. Release the keyboard (2) by sliding it back until it rests on the switch cover and display bezel. 9. Release the zero insertion force (ZIF) - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 57
10. Remove the keyboard. 11. Release the ZIF connector (1) to which the LED board cable is attached, and then disconnect the LED board cable (2). 12. Remove the switch cover. Reverse this procedure to install the switch cover and keyboard. Component replacement procedures 49 - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 58
Display assembly Description Spare part number 17.0-inch, WXGA+BrightView display assembly (includes 3 WLAN Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 59
, remove the following: (1) Four rubber screw covers on the display bezel top edge. The rubber screw covers are included in the Rubber Kit, spare part number 462397-001. (2) Two rubber screw covers on the display bezel bottom corners. (3) Two rubber screw covers on the display bezel bottom edge - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 60
and the backlight cable (3) from the display inverter. 10. Remove the display inverter from the display enclosure. The display inverter is available using spare part number 462579-001. 11. If it is necessary to replace the display panel or hinges, remove the eight Phillips PM2.5×5.0 screws (1) that - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 61
secure the hinges to the display panel. 14. Remove the display hinges (2) from the display panel. The display hinges are available using spare part number 462392-001. 15. If it is necessary to replace the wireless antenna transceivers and cables, release the tabs (1) built into the display enclosure - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 62
16. Remove the wireless antenna transceivers (2) and cables (3) from the display enclosure. The wireless antennae are available using spare part number 462394-001. 17. If it is necessary to replace the microphone receiver and cable, release the tabs (1) built into the display enclosure that secure - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 63
board and cable) Spare part number 462401-001 Before power cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 34). 5. Remove the following components: a. Hard drive (see Hard drive on page 37) b. Optical drive (see Optical drive - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 64
3. Remove the two Phillips PM2.5×5.0 screws that secure the top cover to the computer. 4. Disconnect the caps lock LED board cable (1) from the system board. 5. Release the ZIF connector to which the TouchPad cable (2) is connected, and then disconnect the TouchPad cable from the system board. 6. - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 65
USB board cable) Spare part number 462406-001 Before power cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 34). 5. Remove the following components: a. Hard drive (see Hard drive on page 37) b. Optical drive (see Optical drive - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 66
. Description Fan Spare part number 462404-001 Before power cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 34). 5. Remove the following components: a. Hard drive (see Hard drive on page 37) b. Optical drive (see Optical drive - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 67
computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 34). 5. Remove the following components: a. Hard drive (see Hard drive on page 37) b. Optical drive (see Optical drive on page 44) c. Switch - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 68
board NOTE: All system board spare part kits include replacement thermal material. Description Spare part number GM965 system board, for use 3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer. - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 69
4. Remove the battery (see Battery on page 34). 5. Remove the following components: a. Hard drive (see Hard drive on page 37) b. Optical drive (see Optical drive on page 44) c. Switch cover and keyboard (see Switch cover and keyboard on page 46) d. Display assembly (see Display assembly on page 50) - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 70
the system board to the base enclosure. 6. Flex the front edge (2) of the base enclosure outward until the audio connectors clear the openings in the base enclosure. 7. Use the optical drive connector (3) to lift the right side of the system board (4) until it rests at an angle. 8. Remove the - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 71
computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 34). 5. Remove the following components: a. Hard drive (see Hard drive on page 37) b. Optical drive (see Optical drive on page 44) c. Switch - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 72
3. Remove the power connector cable (3). Reverse this procedure to install the power connector cable. 64 Chapter 4 Removal and replacement procedures - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 73
computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 34). 5. Remove the following components: a. Hard drive (see Hard drive on page 37) b. Optical drive (see Optical drive on page 44) c. Switch - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 74
2. Remove the RTC battery. Reverse this procedure to install the RTC battery. 66 Chapter 4 Removal and replacement procedures - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 75
part power cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 34). 5. Remove the following components: a. Hard drive (see Hard drive on page 37) b. Optical drive (see Optical drive upside down, with the audio connectors toward you. - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 76
3. Remove the digital media board (2) from the system board. Reverse this procedure to install the digital media board. 68 Chapter 4 Removal and replacement procedures - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 77
part power cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 34). 5. Remove the following components: a. Hard drive (see Hard drive on page 37) b. Optical drive (see Optical drive upside down, with the audio connectors toward you. - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 78
component (4) on the system board each time the heat sink is removed. Thermal material is included with all system board, heat sink, and processor spare part kits. Reverse this procedure to install the heat sink. 70 Chapter 4 Removal and replacement procedures - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 79
73-GHz processor Spare part number 456965-001 450586- power cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 34). 5. Remove the following components: a. Hard drive (see Hard drive on page 37) b. Optical drive (see Optical drive - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 80
Remove the processor: 1. Turn the system board upside down, with the audio connectors toward you. 2. Use a flat-bladed screwdriver to turn the processor locking screw (1) one-half turn counterclockwise until you hear a click. 3. Lift the processor (2) straight - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 81
authorized technicians trained by HP must repair this equipment. All troubleshooting and repair procedures are detailed to allow repair at only the subassembly then follow the instructions on the screen. Your preferences go into effect when the computer restarts in Windows. Starting the Setup Utility - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 82
not Windows-based, it does not support the in the lower-left corner of the screen. 2. Access the system information by restarts in Windows.) Restoring default in the lower-left corner of the screen. 2. Select Exit > Load Setup Defaults and then follow the instructions on the screen. The Setup Utility - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 83
users only, refer to Help and Support, which is accessible only when the computer is in Windows. The Setup Utility features available for advanced users include a hard drive self-test, a Network Service : ◦ Press f10, and then follow the instructions on the screen. - or - ◦ If the Setup Utility - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 84
memory size, system BIOS, and keyboard controller version (select models only). To do this Enter, change, or delete an administrator password. Enter, change, or delete a power ATAPI CD/DVD-ROM Drive ◦ Hard drive ◦ USB Diskette on Key ◦ USB Hard drive ◦ Network adapter Enable/disable the Quick Launch - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 85
6 Specifications Computer specifications Dimensions Length Width Height (front to rear) Weight Equipped with battery and optical drive Input power Operating voltage Operating current Temperature Operating (not writing to optical disc) Operating (writing to optical disc) Nonoperating Relative - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 86
specifications Dimensions Height Width Diagonal Number of colors Contrast ratio Brightness Pixel resolution Pitch Format Configuration Backlight Character display Total power consumption Viewing angle Metric U.S. 24.4 cm 38.1 cm 43.2 cm Up to 16.8 million 200:1 (typical) 180 nits (typical - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 87
to 55°C (41°F to 131°F) *1 GB = 1 billion bytes when referring to hard drive storage capacity. Actual accessible capacity is less. Actual drive specifications may differ slightly. NOTE: Certain restrictions and exclusions apply. Contact technical support for details. Hard drive specifications 79 - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 88
DVD±RW and CD-RW SuperMulti Double-Layer Combo Drive specifications Applicable disc Access time Random Cache buffer Data transfer rate 24X CD-ROM 8X DVD 24X CD-R 16X CD-RW 8X DVD+R 4X DVD+RW 8X DVD-R 4X DVD-RW 2.4X DVD+R(9) 5X DVD-RAM Transfer mode Read: Write: CD-DA, CD - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 89
DVD±RW and CD-RW Combo Drive specifications Applicable disc Access time Random Cache buffer Data transfer rate 24X ), CD-R, CD-RW, DVD-ROM (DVD-5, DVD-9, DVD-10, DVD-18), DVD-R, DVD-RW, DVD+R, DVD+RW, DVD-RAM CD-R and CD-RW CD DVD < 110 ms < 130 ms 2 MB 3,600 KB/sec 3,600 KB/sec 3,600 KB/sec - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 90
DMA System function DMA0 Not applicable DMA1* Not applicable DMA2* Not applicable DMA3 Not applicable DMA4 Direct memory access controller DMA5* Available for PC Card DMA6 Not assigned DMA7 Not assigned *PC Card controller can use DMA 1, 2, or 5. 82 Chapter 6 Specifications - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 91
Natural Keyboard IRQ2 Cascaded IRQ3 Intel 82801DB/DBM USB2 Enhanced Host Controller-24CD IRQ4 COM1 IRQ5* Conexant AC-Link Audio Intel 82801DB/DBM SMBus Controller-24C3 Data Fax Modem with SmartCP IRQ6 Diskette drive IRQ7* Parallel port IRQ8 System CMOS/real-time clock IRQ9* Microsoft - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 92
for CPU Counter/timer registers Unused Keyboard controller Port B Unused Keyboard controller Unused NMI enable/RTC Unused DMA page registers Unused Port A Unused Interrupt controller no. 2 System Function (shipping configuration) Unused DMA controller no. 2 Unused Coprocessor busy clear/reset Unused - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 93
) Entertainment audio Unused Unused Unused Unused Unused Unused Reserved serial port Unused Infrared port Unused Unused Secondary diskette drive controller Parallel port (LPT1/default) Unused FM synthesizer-OPL3 Unused VGA Reserved (parallel port/no EPP support) VGA PC Card controller in CPU Unused - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 94
KB 15 MB 58 MB 58 MB 2 MB 4 GB 64 KB Memory address 00000000-0009FFFF 000A0000-000BFFFF 000C0000-000CBFFF 000C8000-000E7FFF 000E8000-000FFFFF 00100000- memory Video memory Video BIOS Unused System BIOS Extended memory Super extended memory Unused Video memory (direct access) Unused System BIOS - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 95
7 Screw listing This section provides specification and reference information for the screws used in the computer. All screws listed in this section are available in the Screw Kit, spare part number 462408-001, and the Display Screw Kit, spare part number 462398-001. 87 - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 96
Phillips PM2.5×6.0 captive screw Color Black Quantity 8 Length 6.0 mm Thread 2.5 mm Head diameter 5.0 mm Where used: (1) Two captive screws that secure the hard drive cover to the computer (2) Two captive screws that secure the memory/WLAN module drive cover to the computer 88 Chapter 7 Screw - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 97
Where used: Four captive screws that secure the heat sink to the system board Phillips PM3.0×4.0 screw Color Silver Quantity 4 Length 4.0 mm Thread 3.0 mm Head diameter 5.0 mm Where used: 4 screws that secure the hard drive bracket to the hard drive Phillips PM3.0×4.0 screw 89 - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 98
Phillips PM2.0×4.0 screw Color Black Quantity 20 Length 4.0 mm Thread 2.0 mm Head diameter 4.5 mm Where used: 2 screws that secure the camera module to the display enclosure Where used: 2 screws that secure the WLAN module to the computer 90 Chapter 7 Screw listing - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 99
Where used: 2 screws that secure the optical drive bracket to the optical drive Where used: 3 screws that secure the keyboard to the computer Phillips PM2.0×4.0 screw 91 - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 100
Where used: 8 screws that secure the display hinges to the display panel Where used: 3 screws that secure the digital media board to the system board 92 Chapter 7 Screw listing - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 101
Phillips PM2.5×9.0 screw Color Black Quantity 27 Length 9.0 mm Thread 2.5 mm Head diameter 5.0 mm Where used: (1) One screw that secures the optical drive to the computer (2) Four screws that secure the switch cover to the computer (3) One screw that secures the keyboard to the computer - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 102
Where used: 4 screws that secure the display assembly to the computer Where used: 14 screws that secure the top cover to the base enclosure Where used: One screw that secures the top cover to the base enclosure 94 Chapter 7 Screw listing - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 103
Where used: (1) One screw that secures the fan to the base enclosure (2) One screw that secures the system board to the base enclosure Phillips PM2.5×9.0 screw 95 - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 104
Phillips PM2.5×5.0 screw Color Black Quantity 19 Length 5.0 mm Thread 2.5 mm Head diameter 5.0 mm Where used: 6 screws that secure the switch cover to the computer Where used: 8 screws that secure the display panel to the display enclosure 96 Chapter 7 Screw listing - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 105
Where used: 2 screws that secure the top cover to the base enclosure Where used: (1) One screw that secures the USB board to the base enclosure (2) Two screws that secure the speaker assembly to the base enclosure Phillips PM2.5×5.0 screw 97 - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 106
Phillips PM2.5×7.0 screw Color Silver Quantity 8 Length 7.0 mm Thread 2.5 mm Head diameter 5.0 mm Where used: 8 screws that secure the display bezel to the display enclosure 98 Chapter 7 Screw listing - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 107
driver (Recovery Manager software feature). This feature helps you reinstall a program or driver factory image if you experience system failure or instability. Recovery Manager works from a dedicated recovery partition on the hard drive to AC power during this process. ● Only one set - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 108
Advanced Options. NOTE: If you are operating the computer on battery power, you will be prompted to connect to AC power before you can go to the next step. 3. Click Recovery disc creation, and then click Next. 4. Follow the on-screen instructions. Backing up your information When to back up ● On - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 109
A system restore point allows you to save and name a snapshot of your hard drive at a specific point in time. You can then recover back to that a restore point. 5. Click Create. The System Protection window opens. 6. Follow the on-screen instructions. Restore to a previous date and time To revert - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 110
on the hard drive. NOTE: Windows has its own built-in repair features, such as System Restore and driver rollback drive and restart the computer. 3. Follow the on-screen instructions. Recovering from the partition on the hard drive You can perform a recovery from the partition on the hard drive - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 111
9 Connector pin assignments Audio-out (headphone) Pin Signal 1 Audio out, left channel 2 Audio out, right channel 3 Ground Audio-in (microphone) Pin Signal 1 Audio signal in 2 Audio signal in 3 Ground Audio-out (headphone) 103 - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 112
External monitor Pin Signal 1 Red analog 2 Green analog 3 Blue analog 4 Not connected 5 Ground 6 Ground analog 7 Ground analog 8 Ground analog 9 +5 VDC 10 Ground 11 Monitor detect 12 DDC 2B data 13 Horizontal sync 14 Vertical sync 15 DDC 2B clock 104 Chapter 9 - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 113
RJ-11 (modem) Pin Signal 1 Unused 2 Tip 3 Ring 4 Unused 5 Unused 6 Unused RJ-11 (modem) 105 - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 114
RJ-45 (network) Pin Signal 1 Transmit + 2 Transmit - 3 Receive + 4 Unused 5 Unused 6 Receive - 7 Unused 8 Unused 106 Chapter 9 Connector pin assignments - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 115
S-Video-out Pin 1 2 3 4 5 6 7 Signal S-VHS color (C) signal Composite video signal S-VHS intensity (Y) signal S-VHS color ground TV-CD S-VHS intensity ground Composite video ground S-Video-out 107 - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 116
Universal Serial Bus Pin Signal 1 +5 VDC 2 Data - 3 Data + 4 Ground 108 Chapter 9 Connector pin assignments - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 117
The wide range input feature of the computer permits it to operate from any line voltage from 100 to 120 volts AC or from 220 to 240 volts AC. The 3-conductor power cord set included with the computer meets the requirements for use in the country or region where the equipment is purchased - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 118
of the agency responsible for evaluation in the country or region where it will be used. 5. The flexible cord must be Type VCTF, 3-conductor, 0.75-mm² conductor size. Power cord set fittings (appliance coupler and wall plug) must bear the certification mark of the agency responsible for evaluation - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 119
battery in general household waste. Follow the local laws and regulations in your area for computer battery components. NOTE: Materials Disposal. This HP product contains mercury in the backlight provided in this appendix are general disassembly instructions. Specific details, such as screw sizes - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 120
Perform the following steps to disassemble the display assembly: 1. Remove all screw covers (1) and screws (2) that secure the display bezel to the display assembly. 2. Lift up and out on the left - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 121
4. Disconnect all display panel cables (1) from the display inverter and remove the inverter (2). 5. Remove all screws (1) that secure the display panel assembly to the display enclosure. 6. Remove the display panel assembly (2) from the display enclosure. 7. Turn the display panel assembly upside - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 122
10. Remove the display panel frame (2) from the display panel. 11. Remove the screws (1) that secure the backlight cover to the display panel. 12. Lift the top edge of the backlight cover (2) and swing it outward. 13. Remove the backlight cover. 14. Turn the display panel right-side up. 114 Chapter - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 123
15. Remove the backlight cables (1) from the clip (2) in the display panel. 16. Turn the display panel upside down. 17. Remove the backlight frame from the display panel. WARNING! The backlight contains mercury. Exercise caution when removing and handling the backlight to avoid damaging this - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 124
18. Remove the backlight from the backlight frame. 19. Disconnect the display cable (1) from the LCD panel. 20. Remove the screws (2) that secure the LCD panel to the display rear panel. 21. Release the LCD panel (3) from the display rear panel. 22. Release the tape (4) that secures the LCD panel to - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 125
Index A AC adapter, spare part number 22, 23 administrator password 76 advanced Setup Utility features 75 antenna disconnecting 43 locations 5 removal 53 spare part number 19, 26, 53 audio, product description 3 audio-in jack location 10 pin assignments 103 audio-out jack location 10 pin - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 126
8 4 15, 25, Windows applications 8 Windows logo 8 L language support 73, 76 left-side components 11 light components 6 lights battery 6 caps lock 6 drive 6 num lock 7 power 6 wireless 6 M main menu 76 mass storage devices, spare part numbers 21 memory map specifications 86 memory module product - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 127
product description 1 removal 71 spare part numbers 15, 24, 71 processor C4 state 76 product description audio 3 chipset 1 diskette drive 3 display panel 2 docking support 3 Ethernet 3 external media cards 3 graphics 2 hard drives 2 keyboard 4 memory module 2 microphone 3 modem module 3 operating - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 128
menu 76 using advanced features 75 speaker assembly removal 59 spare part number 15, 26, 59 speakers 6 specifications computer 77 display 78 DVD±RW and CD-RW Combo Drive 80, 81 hard drive 79 I/O addresses 84 interrupts 83 memory map 86 optical drive 80, 81 system DMA 82 static-shielding materials 31 - Compaq Presario A900 | Compaq Presario A900 Notebook PC - Maintenance and Servic - Page 129
Compaq Presario A900 Notebook PC
Maintenance and Service Guide