HP 550 Notebook PC Maintenance and Service Guide
© Copyright 2008 Hewlett-Packard Development Company, L.P. Bluetooth is a trademark owned by its proprietor and used by Hewlett-Packard Company under license. Intel, Core, and Celeron are trademarks of Intel Corporation in the United States and other countries. Microsoft, Windows, and Windows Vista are U.S. registered trademarks of Microsoft Corporation. SD Logo is a trademark of its proprietor. The information contained herein is subject to change without notice.
Safety warning notice WARNING! To reduce the possibility of heat-related injuries or of overheating the computer, do not place the computer directly on your lap or obstruct the computer air vents. Use the computer only on a hard, flat surface. Do not allow another hard surface, such as an adjoining optional printer, or a soft surface, such as pillows or rugs or clothing, to block airflow.
iv Safety warning notice
Table of contents 1 Product description 2 External component identification Top components ................................................................................................................................... 6 TouchPad ............................................................................................................................ 6 Buttons, lights, and speaker ................................................................................................ 7 Keys .................
Equipment guidelines ....................................................................... 35 Unknown user password ................................................................................................... 36 Component replacement procedures ................................................................................................. 37 Serial number .................................................................................................................... 37 Computer feet .........
System DMA specifications ................................................................................................................ 93 System interrupt specifications ........................................................................................................... 94 System I/O address specifications ..................................................................................................... 95 System memory map specifications .......................................................
RJ-11 (modem) ................................................................................................................................ 128 RJ-45 (network) ................................................................................................................................ 129 Universal Serial Bus .........................................................................................................................
1 Product description Category Description Processors Intel® Core™2 Duo processors Computer models equipped with GLE960 system board Computer models equipped with GME965 system board ● T5670 1.80-GHz processor, 2-MB L2 cache, 800-MHz front side bus (FSB) √ ● T5470 1.60-GHz processor, 2-MB L2 cache, 800-MHz front side bus (FSB) √ ● T5270 1.40-GHz processor, 2-MB L2 cache, 800-MHz FSB √ Intel Celeron® M processors ● P550 2.0-GHz processor, 1-MB L2 cache, 533MHz FSB √ ● P530 1.
Category Description Computer models equipped with GLE960 system board Computer models equipped with GME965 system board Supports the following configurations in all countries and regions except Brazil: √ √ √ √ Supports 9.5-mm, 2.5-inch hard drives √ √ Customer-accessible √ √ Serial ATA √ √ Supports the following drives: √ √ HP DriveGuard √ √ Fixed (removal of 1 screw required) √ √ Customer-accessible √ √ 12.
Category Description Computer models equipped with GLE960 system board Computer models equipped with GME965 system board Supports the following Parallel ATA (PATA) drives: √ √ √ √ Supports external USB diskette drive only √ √ Supports boot from external USB diskette drive √ √ Supports 3-mode diskette drive √ √ Audio HD audio - ADI1981 √ √ Modem 56K V.92 1.
Category Description Computer models equipped with GLE960 system board Computer models equipped with GME965 system board SD Card Reader supporting Secure Digital (SD) Memory Card and MultiMediaCard (MMC) √ √ Audio-in (stereo microphone) √ √ Audio-out (stereo headphone) √ √ RJ-11 (modem) √ √ RJ-45 (Ethernet, includes link and activity lights) √ √ USB (3) √ √ VGA (Dsub 15-pin) supporting 1600 × 1200 external resolution at 75-GHz (hot plug/unplug with autodetect) √ √ 2-pin AC power √
Category Description Computer models equipped with GLE960 system board Computer models equipped with GME965 system board Windows Vista Business with XP Professional Japan (in Japan only) √ Windows Vista Business with XP Professional Japan with Office Personal (in Japan only) √ √ Windows Vista Business with XP Professional Japan with Office Personal with PowerPoint (in Japan only) √ √ Windows Vista Business with XP Professional Japan with Office Professional (in Japan only) √ √ Windows Vista H
2 External component identification Top components TouchPad Item Component Function (1) TouchPad* Moves the pointer and selects or activates items on the screen. (2) Left TouchPad button* Functions like the left button on an external mouse. (3) Right TouchPad button* Functions like the right button on an external mouse. (4) TouchPad scroll zone Scrolls up or down. *This table describes factory settings.
Buttons, lights, and speaker Item Component Function (1) Caps lock light On: Caps lock is on. (2) Wireless button Turns the wireless feature on or off but does not establish a wireless connection. NOTE: You must set up or access a wireless network to establish a wireless connection. (3) (4) Wireless light Power button ● Blue: An integrated wireless device, such as a wireless local area network (WLAN) device, the HP Broadband Wireless Module, and/or a Bluetooth device, is on.
Item Component Function (5) Power light ● On: The computer is on. ● Blinking: The computer is in the Sleep state (Windows Vista) or Standby (Windows XP). ● Off: The computer is off or in Hibernation. (6) Speaker Produces sound. Item Component Function (1) esc key Displays system information when pressed in combination with the fn key. (2) fn key Executes frequently used system functions when pressed in combination with a function key or the esc key.
Front components Item Component Function (1) Audio-out (headphone) jack Connects optional powered stereo speakers, headphones, ear buds, a headset, or television audio. (2) Audio-in (microphone) jack Connects an optional computer headset microphone, stereo array microphone, or monaural microphone.
Right-side components Item Component Function (1) Optical drive Reads an optical disc. (2) Security cable slot Attaches an optional security cable to the computer. NOTE: The security cable is designed to act as a deterrent, but it may not prevent the computer from being mishandled or stolen.
Left-side components Item Component Function (1) RJ-11 (modem) jack Connects a modem cable. (2) Vent Enables airflow to cool internal components. NOTE: The computer fan starts up automatically to cool internal components and prevent overheating. It is normal for the internal fan to cycle on and off during routine operation. (3) External monitor port Connects an external VGA monitor or projector. (4) Power connector Connects an AC adapter. (5) RJ-45 (network) jack Connects a network cable.
Bottom components Item Component Function (1) Battery release latches (2) Release the battery from the battery bay. (2) Battery bay Holds the battery. (3) Vents (6) Enable airflow to cool internal components. NOTE: The computer fan starts up automatically to cool internal components and prevent overheating. It is normal for the internal fan to cycle on and off during routine operation. (4) Memory module compartment Contains the memory module slots.
Wireless antennae (select models only) On select computer models, at least 2 antennae send and receive signals from one or more wireless devices. These antennae are not visible from the outside of the computer. NOTE: For optimal transmission, keep the areas immediately around the antennae free from obstructions. To see wireless regulatory notices, 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.
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. 14 ● Product Name (1). This is the product name affixed to the front of the computer. ● Serial Number (s/n) (2). This is an alphanumeric identifier that is unique to each product. ● Part Number/Product Number (p/n) (3). This number provides specific information about the product's hardware components.
Computer major components Computer major components 15
Item Description (1) Display assemblies (include 2 WLAN antenna transceivers and cables) 15.
Item Description Spare part number For use in Taiwan 495400-AB1 For use in Thailand 495400-281 For use in Turkey 495400-141 For use in the United Kingdom 495400-031 For use in the United States 495400-001 (4) Speaker 456593-001 (5) Top cover (includes TouchPad board and cable, and TouchPad button board and cable) 495399-001 Plastics Kit (see Plastics Kit on page 21 for more Plastics Kit spare part information): 456614-001 (6a) ExpressCard slot protective insert (6b) WLAN module compa
Item Description Spare part number (13) Heat sink (includes replacement thermal material) 456605-001 (14) Processors (includes replacement thermal material) Intel Core2 Duo processors: ● T5670 1.80-GHz (2-MB L2 cache, 800-MHz FSB) 508758-001 ● T5470 1.60-GHz (2-MB L2 cache, 800-MHz FSB) 500757-001 ● T5270 1.40-GHz (2-MB L2 cache, 800-MHz FSB) 495383-001 Intel Celeron M processors: ● P550 2.0-GHz (1-MB L2 cache, 533-MHz FSB) 508759-001 ● P530 1.
Item Description Spare part number For use in Antigua & Barbuda, Argentina, Aruba, the Bahamas, Barbados, Bermuda, Brunei, Canada, the Cayman Islands, Chile, Colombia, Costa Rica, the Dominican Republic, Ecuador, El Salvador, Guam, Guatemala, Haiti, Honduras, Hong Kong, India, Indonesia, Malaysia, Mexico, Panama, Paraguay, Peru, Saudi Arabia, Taiwan, the United States, Uruguay, Venezuela, and Vietnam 487330-001 For use in Austria, Azerbaijan, Bahrain, Belgium, Brazil, Bulgaria, Croatia, Cyprus, the Cze
Item (20) (21) (22) Description Spare part number ● 459263-002 For use in Afghanistan, Albania, Algeria, Andorra, Angola, Antigua & Barbuda, Argentina, Armenia, Aruba, Australia, Austria, Azerbaijan, the Bahamas, Bahrain, Bangladesh, Barbados, Belarus, Belgium, Belize, Benin, Bermuda, Bhutan, Bolivia, Bosnia & Herzegovina, Botswana, Brazil, the British Virgin Islands, Brunei, Bulgaria, Burkina Faso, Burundi, Cambodia, Cameroon, Cape Verde, the Central African Republic, Chad, Chile, Colombia, Comoros
Plastics Kit Item Description Spare part number Plastics Kit: 456614-001 (1) Hard drive bay cover (includes 2 captive screws, secured by C-clips) (2) WLAN module compartment cover (includes one captive screw, secured by a C-clip) (3) ExpressCard slot protective insert (4) Memory module compartment cover (includes one captive screw, secured by a C-clip) (5) Optical drive bay protective insert (not illustrated) Plastics Kit 21
Cable Kit Item 22 Description Spare part number Cable Kit: 456594-001 (1) RJ-11 jack cable (2) Display lid switch module and cable (3) Bluetooth module cable Chapter 3 Illustrated parts catalog
Mass storage devices Item Description (1) Optical drives (include bezel and bracket) Spare part number Supports the following PATA optical drives: DVD±RW and CD-RW SuperMulti Double-Layer Combo Drive with LightScribe 500768-001 DVD/CD-RW Combo Drive 500767-001 DVD-ROM Drive 500766-001 Supports the following SATA optical drives: (2) DVD±RW and CD-RW SuperMulti Double-Layer Combo Drive with LightScribe 507116-001 DVD/CD-RW Combo Drive 507117-001 DVD-ROM Drive 507115-001 Hard drives (includ
Miscellaneous parts Description Spare part number 65-W AC adapter 417220-001 Logo Kit 495408-001 Nylon carrying case 325814-001 USB 1.
Description Spare part number For use the United States 490371-001 Screw Kit 500131-001 ● Phillips PM3.0×4.0 screw ● Phillips PM2.5×12.0 captive screw ● Phillips PM2.5×10.0 captive screw ● Phillips PM2.5×7.0 captive screw ● Phillips PM2.5×7.0 screw ● Phillips PM2.5×4.0 screw ● Phillips PM2.0×8.0 screw ● Phillips PM2.0×6.0 screw ● Phillips PM2.0×5.0 captive screw ● Phillips PM2.0×4.0 screw ● Phillips PM2.0×2.0 broadhead screw ● Torx T8M2.5×9.0 screw ● Slotted Torx ST8M2.5×7.
Spare part number Description 441082-002 Intel 802.
Spare part number Description 456806-001 Display hinges (includes left and right hinges) 459263-001 Broadcom 802.11b/g WLAN module for use in Canada, Cayman Islands, Guam, Puerto Rico, the U.S. Virgin Islands, and the United States 459263-002 Broadcom 802.
28 Spare part number Description 490371-201 Power cord for use in Brazil 490371-291 Power cord for use in Japan 490371-AA1 Power cord for use in the People's Republic of China 490371-AB1 Power cord for use in Taiwan 490371-AD1 Power cord for use in South Korea 490371-AR1 Power cord for use in Africa 490371-BB1 Power cord for use in Israel 490371-D01 Power cord for use in Argentina 490371-D61 Power cord for use in India 495383-001 Intel Core2 Duo T5270 1.
Spare part number Description 495400-201 Keyboard for use in Brazil 495400-211 Keyboard for use in Hungary 495400-221 Keyboard for use in the Czech Republic 495400-231 Keyboard for use in Slovakia 495400-251 Keyboard for use in Russia 495400-281 Keyboard for use in Thailand 495400-291 Keyboard for use in Japan 495400-AB1 Keyboard for use in Taiwan 495400-AD1 Keyboard for use in South Korea 495400-B31 Keyboard for use in the Netherlands 495400-B71 Keyboard for use in Sweden and Finland
30 Spare part number Description 500764-001 6-cell, 47-Wh Li-ion battery 500766-001 DVD-ROM Drive (includes bezel and bracket) (PATA) 500767-001 DVD/CD-RW Combo Drive (includes bezel and bracket) (PATA) 500768-001 DVD±RW and CD-RW SuperMulti Double-Layer Combo Drive with LightScribe (includes bezel and bracket) (PATA) 506446-xx1 T1400 1.
4 Removal and replacement procedures Preliminary replacement requirements Tools required You will need the following tools to complete the removal and replacement procedures: ● Flat-bladed screwdriver ● Magnetic screwdriver ● Phillips P0 and P1 screwdrivers ● Torx T8 screwdriver Service considerations The following sections include some of the considerations that you must keep in mind during disassembly and assembly procedures.
Cables and connectors CAUTION: When servicing the computer, be sure that cables are placed in their proper locations during the reassembly process. Improper cable placement can damage the computer. Cables must be handled with extreme care to avoid damage. Apply only the tension required to unseat or seat the cables during removal and insertion. Handle cables by the connector whenever possible. In all cases, avoid bending, twisting, or tearing cables.
Grounding guidelines Electrostatic discharge damage Electronic components are sensitive to electrostatic discharge (ESD). Circuitry design and structure 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-sensitive devices or microcircuitry.
Packaging and transporting guidelines Follow these grounding guidelines when packaging and transporting equipment: ● To avoid hand contact, transport products in static-safe tubes, bags, or boxes. ● Protect ESD-sensitive parts and assemblies with conductive or approved containers or packaging. ● Keep ESD-sensitive parts in their containers until the parts arrive at static-free workstations. ● Place items on a grounded surface before removing items from their containers.
Equipment guidelines Grounding equipment must include either a wrist strap or a foot strap at a grounded workstation. ● When seated, wear a wrist strap connected to a grounded system. Wrist 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. On grounded mats with banana-plug connectors, use alligator clips to connect a wrist strap.
Unknown user password If the computer you are servicing has an unknown user password, follow these steps to clear the password: NOTE: These steps also clear CMOS. 1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system. 2. Disconnect all external devices connected to the computer. 3.
Component replacement procedures This chapter provides removal and replacement procedures. There are as many as 82 screws, in 18 different sizes, that must be removed, replaced, or loosened when servicing the computer. Make special note of each screw size and location during removal and replacement. Serial number Report the computer serial number to HP when requesting information or ordering spare parts. The serial number is located on the bottom of the computer. ● Product Name (1).
Computer feet The computer feet are adhesive-backed rubber pads. The feet are included in the Rubber Kit, spare part number 500132-001. There are 4 rubber feet that attach to the base enclosure in the locations illustrated below.
Battery Description Spare part number 6-cell, 47-Wh Li-ion battery 500764-001 Before disassembling the computer, follow these steps: 1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system. 2. Disconnect all external devices connected to the computer. 3.
Hard drive NOTE: All hard drive spare part kits include a hard drive bracket. Description Spare part number 250-GB, 5400-rpm hard drive 500763-001 160-GB, 5400-rpm hard drive 500762-001 120-GB, 5400-rpm hard drive 500761-001 Before disassembling the computer, follow these steps: 1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system. 2.
6. Remove the hard drive (4) from the hard drive bay. 7. 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. 8. Lift the bracket (2) straight up to remove it from the hard drive. Reverse this procedure to reassemble and install the hard drive.
WLAN module Description Spare part number Intel 802.
Description Spare part number ● 459263-002 For use in Afghanistan, Albania, Algeria, Andorra, Angola, Antigua & Barbuda, Argentina, Armenia, Aruba, Australia, Austria, Azerbaijan, the Bahamas, Bahrain, Bangladesh, Barbados, Belarus, Belgium, Belize, Benin, Bermuda, Bhutan, Bolivia, Bosnia & Herzegovina, Botswana, Brazil, the British Virgin Islands, Brunei, Bulgaria, Burkina Faso, Burundi, Cambodia, Cameroon, Cape Verde, the Central African Republic, Chad, Chile, Colombia, Comoros, the Congo, Costa Rica,
3. Lift the right side of the WLAN module compartment cover (2), swing it to left, and remove the cover. The WLAN module compartment cover is included in the Plastics Kit, spare part number 456614-001. 4. Disconnect the WLAN antenna cables (1) from the terminals on the WLAN module. NOTE: The black WLAN antenna cable is connected to the WLAN module “Main” terminal. The white WLAN antenna cable is connected to the WLAN module “Aux” terminal. 5. Remove the two Phillips PM2.5×4.
Memory module Description Spare part number 2-GB (PC2-5300, 667-MHz, DDR2) 500759-001 1-GB (PC2-5300, 667-MHz, DDR2) 500758-001 512-MB (PC2-5300, 667-MHz, DDR2) 500760-001 Before removing the memory module, follow these steps: 1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system. 2. Disconnect all external devices connected to the computer. 3.
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 insertion into the memory module slot. Reverse this procedure to install a memory module. Optical drive NOTE: All optical drive spare part kits include an optical drive bezel.
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 39). Remove the optical drive: 1. Position the computer with the right side toward you. 2. Remove the slotted Torx ST8M2.5×7.0 screw (1) that secures the optical drive to the computer. 3.
Reverse this procedure to reassemble and install an optical drive. Switch cover Description Spare part number Switch cover (includes button board and cable) 495388-001 Before removing the switch cover, follow these steps: 1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system. 2. Disconnect all external devices connected to the computer. 3.
6. Remove the switch cover (2) by lifting it straight up. Reverse this procedure to install the switch cover.
Keyboard For use in: Spare part number For use in: Spare part number Belgium 495400-181 Norway 495400-091 Brazil 495400-201 Portugal 495400-131 The Czech Republic 495400-221 Russia 495400-251 Denmark 495400-081 Saudi Arabia 495400-171 France 495400-051 Slovakia 495400-231 French Canada 495400-121 Slovenia 495400-BA1 Germany 495400-041 South Korea 495400-AD1 Greece 495400-DJ1 Spain 495400-071 Hungary 495400-211 Sweden and Finland 495400-B71 Iceland 495400-DD1 Switzer
2. Remove the two slotted Torx ST8M2.5×7.0 screws that secure the keyboard to the computer. 3. Turn the computer display-side up, with the front toward you. 4. Open the computer as far as possible. 5. Lift the rear edge of the keyboard (1) and slide it back until it rests on the display assembly (2).
6. Release the zero insertion force (ZIF) connector (1) to which the keyboard cable is attached, and disconnect the keyboard cable (2) from the system board. 7. Remove the keyboard. Reverse this procedure to install the keyboard.
Speaker Description Spare part number Speaker 456593-001 Before removing the speaker, follow these steps: 1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system. 2. Disconnect all external 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.
Display lid switch module NOTE: The display lid switch module is included in the Cable Kit, spare part number Cable Kit, spare part number 456594-001. Before removing the display lid switch module, follow these steps: 1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system. 2. Disconnect all external devices connected to the computer. 3.
Display assembly NOTE: All display assembly spare part kits include 2 WLAN antenna transceivers and cables. Description Spare part number 15.4-inch, WXGA with BrightView 495385-001 Display Cable Kit (includes 2 wireless antennae) 508816-001 Before removing the display assembly, follow these steps: 1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system. 2.
3. Turn the computer right-side up, with the front toward you. 4. Open the computer as far as possible. 5. Disconnect the display panel cables (1) and (2) from the system board. 6. Remove the wireless antenna cables (3) from the clips and routing channels built into the top cover. 7. Remove the four slotted Torx ST8M2.5×7.0 screws (1) that secure the display assembly to the computer. CAUTION: Support the display assembly when removing the following screws.
9. If it is necessary to replace the display bezel, display inverter, or display hinges, remove the eight rubber screw covers (1) and the eight Torx T8M2.5×6.0 screws (2) that secure the display bezel to the display assembly. The rubber screw covers are available in the Rubber Kit, spare part number 500132-001. 10. Flex the inside edges of the left and right sides (1) and the top and bottom sides (2) of the display bezel until the bezel disengages from the display enclosure. 11.
13. Disconnect the display panel cable (2) and the backlight cable (3) from the display inverter. 14. Remove the display inverter. The display inverter is available using spare part number 456618-001. 15. If it is necessary to replace the display hinges, remove the four Torx T8M2.5×6.0 screws (1) that secure the display panel to the display enclosure. 16. Remove the display panel (2). 17. Remove the four Phillips PM2.0×4.0 screws (1) that secure each display hinge to the display panel.
18. Remove the display hinges (2). The left and right display hinges are available using spare part number 456806-001. Reverse this procedure to reassemble and install the display assembly.
Top cover NOTE: cable. The top cover includes the TouchPad board and cable, and the TouchPad button board and Description Spare part number Top cover 495399-001 Before removing the top cover, follow these steps: 1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system. 2. Disconnect all external devices connected to the computer. 3.
2. Remove the followng screws: (1) Three Phillips PM2.0×2.0 broadhead screws (2) Seven slotted Torx ST8M2.5×7.0 screws (3) One Torx T8m2.5×4.0 screw 3. Turn the computer right-side up, with the left side toward you. 4. Press in on the ExpressCard slot eject button (1) two times. The first press releases the ExpressCard slot eject button. The second press releases the ExpressCard slot protective insert, if one is present, from the ExpressCard slot. 5. Remove the ExpressCard slot insert(2). 6.
10. Release the ZIF connector (4) to which the TouchPad cable is connected and disconnect the TouchPad cable (5) from the system board. 11. Remove the top cover. Reverse this procedure to install the top cover.
TouchPad board and TouchPad button board NOTE: The top cover, spare part number 495399-001, includes the TouchPad board and cable, and the TouchPad button board and cable. Before removing the TouchPad board and TouchPad button board, follow these steps: 1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system. 2. Disconnect all external devices connected to the computer. 3.
64 4. Remove the two Phillips PM2.0×4.0 screws (4) that secure the TouchPad bracket to the computer. 5. Release the TouchPad bracket (1) by sliding it back. 6. Remove the TouchPad bracket (2) by lifting it straight up. 7. Remove the TouchPad button board (3). 8. Remove the TouchPad button board cable (4) from the opening in the TouchPad bracket.
9. Remove the TouchPad board (1) from the top cover. NOTE: When replacing the TouchPad board and TouchPad button board, be sure the TouchPad button actuators (2) are installed in the top cover. Reverse this procedure to install the TouchPad board and TouchPad button board. Bluetooth module NOTE: The Bluetooth module spare part kits do not include a Bluetooth module cable. The Bluetooth module cable is included in the Cable Kit, spare part number 456594-001.
f. Display lid switch module (see Display lid switch module on page 54) g. Display assembly (see Display assembly on page 55) h. Top cover (see Top cover on page 60) Remove the Bluetooth module: 1. Disconnect the Bluetooth module cable (1) from the system board. 2. Remove the two Phillips PM2.0×4.0 screws (2) that secure the Bluetooth module to the base enclosure. 3. Remove the Bluetooth module (3) from the base enclosure. Reverse this procedure to install the Bluetooth module.
Before removing the system board, follow these steps: 1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system. 2. Disconnect all external 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 39). 5.
2. Disconnect the fan cable (3) and the Bluetooth module cable (4) from the system board. 3. Remove the following screws: (1) Two Phillips PM2.0×6.0 screws (2) Two Torx T8M2.0×4.0 screws (3) One Torx T8M2.5×4.0 screw 68 4. Flex the left side of the base enclosure (1) until the external monitor connector (2) is clear of the opening in the base enclosure. 5. Lift the rear edge of the system board (3) until it rests at an angle.
6. Remove the system board (4) from the base enclosure by sliding it back. 7. If it is necessary to replace the optical drive connector board, remove it from the connector on the system board. The optical drive connector board is available using spare part numbers 456805-001 (PATA) or 495386-001 (SATA). Reverse the preceding procedure to install the system board.
Fan Description Spare part number Fan 431312-001 Before removing the fan, follow these steps: 1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system. 2. Disconnect all external 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.
2. Remove the fan (2) from the base enclosure. Reverse this procedure to install the fan. NOTE: To properly ventilate the computer, allow at least a 7.6-cm (3-inch) clearance on the left side of the computer. The computer uses an electric fan for ventilation. The fan is controlled by a temperature sensor and is designed to turn on automatically when high temperature conditions exist.
Heat sink NOTE: The heat sink spare part kit includes replacement thermal material. Description Spare part number Heat sink (includes replacement thermal material) 456605-001 Before removing the heat sink, follow these steps: 1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system. 2. Disconnect all external devices connected to the computer. 3.
3. Remove the heat sink (2). NOTE: The thermal material must be thoroughly cleaned from the surfaces of the heat sink (1) and (2), the processor (3), and graphics system component (4) each time the heat sink is removed. Thermal pads and thermal paste must be installed on all surfaces before the heat sink assembly is reinstalled. Thermal material is included with all heat sink and processor spare part kits. Reverse this procedure to install the heat sink.
Processor NOTE: All processor spare part kits include replacement thermal material. Replacement thermal material is also available in the heat sink spare part kit, spare part number 456605-001. Description Spare part number Intel Core2 Duo processors: ● T5670 1.80-GHz (2-MB L2 cache, 800-MHz FSB) 508758-001 ● T5470 1.60-GHz (2-MB L2 cache, 800-MHz FSB) 500757-001 ● T5270 1.40-GHz (2-MB L2 cache, 800-MHz FSB) 495383-001 Intel Celeron M processors: ● P550 2.
Remove the processor: 1. Turn the system board upside down, with the USB 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 up and remove it. NOTE: When you install the processor, the gold triangle (3) on the processor must be aligned with the triangle (4) embossed on the processor socket. Reverse this procedure to install the processor.
Modem module NOTE: The modem module spare part kit does not include a modem module cable. The modem module cable is included in the Cable Kit, spare part number 456594-001. Description Spare part number For use in the United States 461749-001 For use in Australia and New Zealand 461749-011 Before removing the modem module, follow these steps: 1. Shut down the computer.
3. Lift the modem module (2) straight up to disconnect it from the system board. 4. Remove the modem module. Reverse this procedure to install the modem module.
RTC battery NOTE: Removing the RTC battery and leaving it uninstalled for 5 or more minutes causes all passwords and CMOS settings to be cleared. Description Spare part number RTC battery 449137-001 Before removing the RTC battery, follow these steps: 1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system. 2. Disconnect all external devices connected to the computer. 3.
2. Remove the RTC battery from the socket on the system board. Reverse this procedure to install the RTC battery. ExpressCard assembly NOTE: All system board spare part kits include the ExpressCard assembly. Before removing the ExpressCard assembly, follow these steps: 1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system. 2. Disconnect all external devices connected to the computer. 3.
Remove the ExpressCard assembly: 1. Turn the system board upside down, with the USB connectors toward you. 2. Remove the two Phillips PM2.0×8.0 screws (1) and the two Phillips PM2.0×4.0 screws (2) that secure the ExpressCard assembly to the system board. 3. Turn the system board right-side up, with the USB connectors toward you. 4. Remove the ExpressCard assembly from the system board. Reverse this procedure to install the ExpressCard assembly.
5 Computer Setup Starting Computer Setup Computer Setup is a preinstalled, ROM-based utility that can be used even when the operating system is not working or will not load. NOTE: Some of the Computer Setup menu items listed in this guide may not be supported by your computer. NOTE: Pointing devices are not supported in Computer Setup. You must use the keyboard to navigate and make selections.
Using Computer Setup Navigating and selecting in Computer Setup The information and settings in Computer Setup are accessed from the File, Security, Diagnostics, and System Configuration menus. 1. Open Computer Setup by turning on or restarting the computer, and then pressing f10 while the "F10 = ROM Based Setup" message is displayed in the lower-left corner of the screen. Because Computer Setup is not Windows-based, it does not support the TouchPad.
Computer Setup menus The menu tables in this section provide an overview of Computer Setup options. NOTE: Some of the Computer Setup menu items listed in this chapter may not be supported by your computer. File menu Select To do this System information ● View identification information for the computer and the batteries in the system. ● View specification information for the processor, cache and memory size, system ROM, video revision, and keyboard controller version.
Security menu Select To do this Setup password Enter, change, or delete a setup password. Power-On password Enter, change, or delete a power-on password. Password options ● Enable/disable stringent security. ● Enable/disable password requirement on computer restart. ● Enable/disable DriveLock on any computer hard drive and on optional MultiBay hard drives. ● Change a DriveLock user password or master password.
System Configuration menu NOTE: Some of the listed System Configuration options may not be supported by your computer. Select To do this Language (or press f2) Change the Computer Setup language. Boot options ● Set f9, f10, and f12 delay when starting up. ● Enable/disable CD-ROM boot. ● Enable/disable floppy boot. ● Enable/disable internal network adapter boot and set the boot mode (PXE or RPL).
Select To do this USB port to the computer or to an optional docking device (select models only). 86 Chapter 5 Computer Setup ● Select a parallel port mode: EPP (Enhanced Parallel Port), standard, bidirectional, or ECP (Enhanced Capabilities Port). ● Enable/disable BIOS DMA data transfers. ● Enable/disable fan always on while connected to an AC outlet. ● Enable/disable Intel Data Execution Prevention or AMD® PSAE Execution Disable.
Select To do this Built-In Device Options ● Enable/disable embedded WWAN Device Radio. ● Enable/disable embedded WLAN Device Radio. ● Enable/disable embedded Bluetooth Device Radio. ● Enable/disable LAN/WLAN Switching. When enabled, switches to a WLAN when a LAN is either unavailable or disconnected. ● Enable/disable Wake on LAN from Off. ● Enable/disable the ambient light sensor. ● Enable/disable the serial port. ● Enable/disable the parallel port.
6 Specifications Computer specifications Metric U.S. Length 26.68 cm 10.50 in Width 35.80 cm 14.10 in Height (front to rear) 3.23 to 3.58 cm 1.27 to 1.41 in Weight (equipped with optical drive, hard drive, and battery) 2.45 kg 5.4 lbs Dimensions Input power Operating voltage 19.0 V dc @ 4.74 A – 90 W Operating current 4.
Metric Nonoperating U.S. 1.50 g zero-to-peak, 10 Hz to 500 Hz, 0.5 oct/min sweep rate NOTE: Applicable product safety standards specify thermal limits for plastic surfaces. The computer operates well within this range of temperatures. 15.4-inch, WXGA display specifications Metric U.S. Height 20.7 cm 8.15 in Width 33.1 cm 13.03 in Diagonal 39.1 cm 15.39 in Number of colors Up to 16.
Hard drive specifications 250-GB* 160-GB* 120-GB* Height 9.5 mm 9.5 mm 9.
DVD±RW and CD-RW SuperMulti Double-Layer Combo Drive with LightScribe specifications Applicable disc Read: Write: CD-DA, CD+(E)G, CD-MIDI, CD-TEXT, CDROM, CD-ROM XA, MIXED MODE CD, CD-I, CD-I Bridge (Photo-CD, Video CD), Multisession CD (Photo-CD, CD-EXTRA, Portfolio, CD-R, CDRW), 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 Access time CD DVD Random < 160 ms < 190 ms Cache buffer 2 MB DVD+R, DVD+RW, DVD-R, DVDRW, DVD-RAM Data transf
DVD/CD-RW Combo Drive specifications Applicable disc Read: Write: CD-DA, CD+(E)G, CD-MIDI, CD-TEXT, CDROM, CD-ROM XA, MIXED MODE CD, CD-I, CD-I Bridge (Photo-CD, Video CD), Multisession CD (Photo-CD, CD-EXTRA, Portfolio, CD-R, CDRW), 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 Access time CD DVD Random < 110 ms < 130 ms Cache buffer 2 MB Data transfer rate 92 24X CD-ROM 3,600 KB/sec 8X DVD 3,600 KB/sec 24X CD-R 3,600 KB/sec 2
System DMA specifications Hardware DMA System function DMA0 Not applicable DMA1* Not applicable DMA2* Not applicable DMA3 Not applicable DMA4 Direct memory access controller DMA5* Available for ExpressCard DMA6 Not assigned DMA7 Not assigned *ExpressCard controller can use DMA 1, 2, or 5.
System interrupt specifications Hardware IRQ System function IRQ0 System timer IRQ1 Standard 101-/102-Key or Microsoft® 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 ACPI-compliant system IRQ10* Intel USB UHCI controller—24C2 Intel 82852/82855 GM/GME
System I/O address specifications I/O address (hex) System function (shipping configuration) 000 - 00F DMA controller no. 1 010 - 01F Unused 020 - 021 Interrupt controller no.
96 I/O address (hex) System function (shipping configuration) 220 - 22F Entertainment audio 230 - 26D Unused 26E - 26 Unused 278 - 27F Unused 280 - 2AB Unused 2A0 - 2A7 Unused 2A8 - 2E7 Unused 2E8 - 2EF Reserved serial port 2F0 - 2F7 Unused 2F8 - 2FF Infrared port 300 - 31F Unused 320 - 36F Unused 370 - 377 Secondary diskette drive controller 378 - 37F Parallel port (LPT1/default) 380 - 387 Unused 388 - 38B FM synthesizer—OPL3 38C - 3AF Unused 3B0 - 3BB VGA 3BC - 3BF
System memory map specifications Size Memory address System function 640 KB 00000000-0009FFFF Base memory 128 KB 000A0000-000BFFFF Video memory 48 KB 000C0000-000CBFFF Video BIOS 160 KB 000C8000-000E7FFF Unused 64 KB 000E8000-000FFFFF System BIOS 15 MB 00100000-00FFFFFF Extended memory 58 MB 04800000-07FFFFFF Super extended memory 58 MB 04800000-07FFFFFF Unused 2 MB 08000000-080FFFFF Video memory (direct access) 4 GB 08200000-FFFEFFFF Unused 64 KB FFFF0000-FFFFFFFF System
7 Screw listing This section provides specification and reference information for the screws and screw locks used in the computer. All screws listed in this section are available in the Screw Kit, spare part number 500131-001.
Phillips PM2.0×5.0 captive screw Color Quantity Length Thread Head diameter Black 4 5.0 mm 2.0 mm 5.
Phillips PM2.5×12.0 captive screw Color Quantity Length Thread Head diameter Silver 1 12.0 mm 2.5 mm 5.
Phillips PM3.0×4.0 screw Color Quantity Length Thread Head diameter Silver 4 4.0 mm 3.0 mm 5.0 mm Where used: 4 screws that secure the hard drive bracket to the hard drive Phillips PM3.0×4.
Phillips PM2.5×4.0 screw Color Quantity Length Thread Head diameter Black 4 4.0 mm 2.5 mm 5.
Slotted Torx ST8M2.5×7.0 screw Color Quantity Length Thread Head diameter Black 17 7.0 mm 2.5 mm 5.0 mm Where used: (1) One screw that secures the optical drive to the computer (2) Two screws that secure the keyboard to the computer Slotted Torx ST8M2.5×7.
Where used: 4 screws that secure the display assembly to the computer Where used: 7 screws that secure the top cover to the base enclosure Where used: 3 screws that secure the top cover to the base enclosure 104 Chapter 7 Screw listing
Phillips PM2.0×4.0 screw Color Quantity Length Thread Head diameter Silver 16 4.0 mm 2.0 mm 4.5 mm Where used: 2 screws that secure the optical drive bracket to the optical drive Where used: 8 screws that secure the display hinges to the display assembly Phillips PM2.0×4.
Where used: 2 screws that secure the TouchPad Bracket and TouchPad button board to the top cover Where used: 2 screws that secure the Blueotooth module to the base enclosure Where used: 2 screws that secure the ExpressCard assembly to the system board 106 Chapter 7 Screw listing
Torx T8M2.5×9.0 screw Color Quantity Length Thread Head diameter Black 2 9.0 mm 2.5 mm 5.0 mm Where used: 2 screws that secure the switch cover to the computer Torx T8M2.5×9.
Torx T8M2.5×3.0 broadhead screw Color Quantity Length Thread Head diameter Black 3 3.0 mm 2.5 mm 8.
Torx T8M2.5×4.0 screw Color Quantity Length Thread Head diameter Black 4 4.0 mm 2.5 mm 5.0 mm Where used: 2 screws that secure the speaker to the computer Where used: One screw that secures the top cover to the base enclosure Torx T8M2.5×4.
Where used: One screw that secures the system board to the base enclosure 110 Chapter 7 Screw listing
Phillips PM2.0×2.0 broadhead screw Color Quantity Length Thread Head diameter Black 3 2.0 mm 2.0 mm 7.0 mm Where used: 3 screws that secure the top cover to the display enclosure Phillips PM2.0×2.
Torx T8M2.5×6.0 screw Color Quantity Length Thread Heat width Black 12 6.0 mm 2.5 mm 5.
Phillips PM2.0×6.0 screw Color Quantity Length Thread Head diameter Black 1 6.0 mm 2.0 mm 4.5 mm Where used: One screw that secures the system board to the base enclosure Phillips PM2.0×6.
Torx T8M2.0×4.0 screw Color Quantity Length Thread Head diameter Black 2 4.0 mm 2.0 mm 4.
Phillips PM2.5×7.0 screw Color Quantity Length Thread Head diameter Black 1 7.0 mm 2.5 mm 5.0 mm Where used: One screw that secures the fan to the base enclosure Phillips PM2.5×7.
Phillips PM2.5×7.0 captive screw Color Quantity Length Thread Head diameter Silver 1 7.0 mm 2.5 mm 5.
Phillips PM2.5×10.0 captive screw Color Quantity Length Thread Head diameter Silver 4 10.0 mm 2.5 mm 5.0 mm Where used: 4 captive screws that secure the heat sink to the system board (screws are secured to the heat sink by C-clips) Phillips PM2.5×10.
Phillips PM2.0×8.0 screw Color Quantity Length Thread Head diameter Black 2 8.0 mm 2.0 mm 4.
8 Backup and recovery 119
Backup and recovery in Windows Vista Overview To protect your information, use the Backup and Restore Center to back up individual files and folders, back up your entire hard drive (select models only), or create system restore points. In case of system failure, you can use the backup files to restore the contents of your computer.
The screen image is added to the document. 4. ● Save the document. When backing up to discs, use any of the following types of discs (purchased separately): CD-R, CD-RW, DVD+R, DVD+R DL, DVD-R, DVD-R DL, or DVD±RW. The discs you use will depend on the type of optical drive installed in your computer. NOTE: DVDs and DVDs with double-layer (DL) support store more information than CDs, so using them for backup reduces the number of recovery discs required.
CAUTION: Using Startup Repair completely erases hard drive contents and reformats the hard drive. All files you have created and any software installed on the computer are permanently removed. When reformatting is complete, the recovery process restores the operating system, as well as the drivers, software, and utilities from the backup used for recovery. 1. If possible, back up all personal files. 2. If possible, check for the presence of the Windows partition and the HP Recovery partition.
CAUTION: Using a Windows Vista operating system DVD completely erases hard drive contents and reformats the hard drive. All files you have created and any software installed on the computer are permanently removed. When reformatting is complete, the recovery process helps you restore the operating system, as well as drivers, software, and utilities. To initiate recovery using a Windows Vista operating system DVD, follow these steps: NOTE: This process takes several minutes. 1.
Backup and Recovery in Windows XP Overview To protect your information, use the Windows® Backup utility (select models only) to back up files and folders or create recovery points. In case of system failure, you can use the backup files to restore your computer.
NOTE: Be sure that the computer is connected to AC power before you start the backup process. NOTE: The backup process may take over an hour, depending on file size and the speed of the computer. 1. Click Start > All Programs > Accessories > System Tools > Backup. 2. Follow the on-screen instructions.
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 126 Chapter 9 Connector pin assignments
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 External monitor 127
RJ-11 (modem) Pin Signal 1 Unused 2 Tip 3 Ring 4 Unused 5 Unused 6 Unused 128 Chapter 9 Connector pin assignments
RJ-45 (network) Pin Signal 1 Transmit + 2 Transmit - 3 Receive + 4 Unused 5 Unused 6 Receive - 7 Unused 8 Unused Universal Serial Bus Pin Signal 1 +5 VDC 2 Data - 3 Data + 4 Ground RJ-45 (network) 129
10 Power cord set requirements 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. Power cord sets for use in other countries and regions must meet the requirements of the country or region where the computer is used.
Requirements for specific countries and regions Country/region Accredited agency Applicable note number Australia EANSW 1 Austria OVE 1 Belgium CEBC 1 Canada CSA 2 Denmark DEMKO 1 Finland FIMKO 1 France UTE 1 Germany VDE 1 Italy IMQ 1 Japan METI 3 The Netherlands KEMA 1 Norway NEMKO 1 The People's Republic of China CCC 5 South Korea EK 4 Sweden SEMKO 1 Switzerland SEV 1 Taiwan BSMI 4 The United Kingdom BSI 1 The United States UL 2 1.
11 Recycling Battery When a battery has reached the end of its useful life, do not dispose of the battery in general household waste. Follow the local laws and regulations in your area for computer battery disposal. Display WARNING! The backlight contains mercury. Exercise caution when removing and handling the backlight to avoid damaging this component and causing exposure to the mercury. CAUTION: The procedures in this appendix can result in damage to display components.
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 and right inside edges (1) and the top and bottom inside edges (2) of the display bezel until the bezel disengages from the display assembly. 3. Remove the display bezel (3).
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 down. 8. Remove all screws that secure the display panel frame to the display panel. 9. Use a sharp-edged tool to cut the tape (1) that secures the sides of the display panel to the display panel frame.
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.
15. Remove the backlight cables (1) from the clip (2) in the display panel. 16. Turn the display panel upside down. WARNING! The backlight contains mercury. Exercise caution when removing and handling the backlight to avoid damaging this component and causing exposure to the mercury. 17. Remove the backlight frame from the display panel.
18. Remove the backlight from the backlight frame. 19. Disconnect the display panel 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 the display rear panel. 23. Remove the LCD panel. 24. Recycle the LCD panel and backlight.
Index A AC adapter, spare part number 24, 25 antenna, disconnecting 44 antennae 13 audio, product description 3 audio-in jack location 9 pin assignments 126 audio-out jack location 9 pin assignments 126 B backing up files 120 backing up files and folders 124 Backup and Restore Center 120, 121 base enclosure, spare part number 18, 28 battery location 12 removal 39 spare part number 18 spare part numbers 30, 39 battery bay 12 battery latches 12 battery light 11 Bluetooth module removal 65 spare part numbers
display panel product description 1 removal 58 display specifications 89 DriveLock password 84 Driver Recovery disc 125 drives boot order 85 preventing damage 32 DVD-ROM Drive precautions 32 removal 46 spare part number 20, 23, 30, 46 DVD/CD-RW Combo Drive precautions 32 removal 46 spare part number 20, 23, 30, 46 specifications 92 DVD±RW and CD-RW SuperMulti Double-Layer Combo Drive with LightScribe precautions 32 removal 46 spare part numbers 20, 23, 30, 46 specifications 91 E electrostatic discharge 33 e
removal 45 spare part numbers 20, 29, 45 memory module compartment 12 memory module compartment cover illustrated 21 removal 45 microphone jack location 9 pin assignments 126 modem jack location 11 pin assignments 128 modem module product description 3 removal 76 spare part number 18, 27, 76 monitor port location 11 pin assignments 127 N network jack location 11 pin assignments 129 O Operating System disc 125 operating system, product description 4 optical drive location 10 precautions 32 product descriptio
security, product description 4 serial number 14, 37 service considerations 31 serviceability, product description 5 setup utility Diagnostics menu 84 File menu 83 Security menu 84 System Configuration menu 85 speaker location 8 removal 53 spare part number 17, 26, 53 specifications computer 88 display 89 DVD/CD-RW Combo Drive 92 DVD±RW and CD-RW SuperMulti Double-Layer Combo Drive with LightScribe 91 hard drive 90 I/O addresses 95 interrupts 94 memory map 97 optical drive 91, 92 system DMA 93 startup check
