Page 1 HP 550 Notebook PC Maintenance and Service Guide...
Page 2 Corporation. 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 set forth in the express warranty statements accompanying such products and services. Nothing herein should be construed as constituting an additional warranty.
Page 3 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.
Page 4 Safety warning notice...
Page 5: Table Of Contents
Table of contents 1 Product description 2 External component identification Top components ........................... 6 TouchPad ..........................6 Buttons, lights, and speaker ....................7 Keys ............................. 8 Front components ..........................9 Right-side components ........................10 Left-side components ......................... 11 Bottom components ........................... 12 Wireless antennae (select models only) .....................
Page 6 Equipment guidelines ............... 35 Unknown user password ....................36 Component replacement procedures ....................37 Serial number ........................37 Computer feet ........................38 Battery ..........................39 Hard drive .......................... 40 WLAN module ........................42 Memory module ......................... 45 Optical drive ........................46 Switch cover ........................
Page 7 System DMA specifications ........................ 93 System interrupt specifications ......................94 System I/O address specifications ..................... 95 System memory map specifications ....................97 7 Screw listing Phillips PM2.0×5.0 captive screw ....................... 99 Phillips PM2.5×12.0 captive screw ....................100 Phillips PM3.0×4.0 screw ......................... 101 Phillips PM2.5×4.0 screw .........................
Page 8 RJ-11 (modem) ..........................128 RJ-45 (network) ..........................129 Universal Serial Bus ......................... 129 10 Power cord set requirements Requirements for all countries and regions ..................130 Requirements for specific countries and regions ................131 11 Recycling Battery .............................. 132 Display .............................. 132 Index .................................
Page 9: Product Description
Product description Category Description Computer models Computer models equipped with equipped with GLE960 system GME965 system board board Processors Intel® Core™2 Duo processors ● T5670 1.80-GHz processor, 2-MB L2 cache, √ 800-MHz front side bus (FSB) ● T5470 1.60-GHz processor, 2-MB L2 cache, √...
Page 10 Serial ATA √ √ Supports the following drives: √ √ ● 250-GB, 5400-rpm ● 160-GB, 5400-rpm ● 120-GB, 5400-rpm HP DriveGuard √ √ Optical drives Fixed (removal of 1 screw required) √ √ Customer-accessible √ √ 12.7-mm tray load √...
Page 11 Category Description Computer models Computer models equipped with equipped with GLE960 system GME965 system board board Supports the following Parallel ATA (PATA) drives: √ √ ● DVD±RW and CD-RW SuperMulti Double- Layer Combo Drive with LightScribe ● DVD/CD-RW Combo Drive ●...
Page 12 Category Description Computer models Computer models equipped with equipped with GLE960 system GME965 system board board SD Card Reader supporting Secure Digital (SD) √ √ Memory Card and MultiMediaCard (MMC) Ports Audio-in (stereo microphone) √ √ Audio-out (stereo headphone) √ √...
Page 13 Category Description Computer models Computer models equipped with equipped with GLE960 system GME965 system board 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 √...
Page 14: External Component Identification
External component identification Top components TouchPad Item Component Function TouchPad* Moves the pointer and selects or activates items on the screen. Left TouchPad button* Functions like the left button on an external mouse. Right TouchPad button* Functions like the right button on an external mouse. TouchPad scroll zone Scrolls up or down.
Page 15: Buttons, Lights, And Speaker
You must set up or access a wireless network to establish a wireless connection. ● Wireless light 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. ● Amber: All wireless devices are off.
Page 16: Keys
Item Component Function ● 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. Speaker Produces sound. Keys Item Component Function Displays system information when pressed in combination...
Page 17: Front Components
Front components Item Component Function Audio-out (headphone) jack Connects optional powered stereo speakers, headphones, ear buds, a headset, or television audio. Audio-in (microphone) jack Connects an optional computer headset microphone, stereo array microphone, or monaural microphone. SD Card Reader Supports the following optional digital card formats: ●...
Page 18: Right-Side Components
Right-side components Item Component Function Optical drive Reads an optical disc. 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.
Page 19: Left-Side Components
Left-side components Item Component Function RJ-11 (modem) jack Connects a modem cable. 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.
Page 20: Bottom Components
Bottom components Item Component Function Battery release latches (2) Release the battery from the battery bay. Battery bay Holds the battery. 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.
Page 21: Wireless Antennae (Select Models Only)
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.
Page 22: Illustrated Parts Catalog
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. ● Product Name (1). This is the product name affixed to the front of the computer. ●...
Page 23: Computer Major Components
Computer major components Computer major components...
Page 24 Item Description Spare part number Display assemblies (include 2 WLAN antenna transceivers and cables) 15.4-inch, WXGA BrightView 495385-001 Display assembly internal components: Display enclosure (includes 2 WLAN antenna transceivers and cables) 495402-001 Display hinges (includes left and right hinges) 456806-001 Display inverter 456618-001 Display Cable Kit (includes 2 wireless antennae)
Page 25 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 Speaker 456593-001 Top cover (includes TouchPad board and cable, and TouchPad button board and cable) 495399-001 Plastics Kit (see Plastics Kit on page 21...
Page 26 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 ●...
Page 27 Item Description Spare part number For use in Antigua & Barbuda, Argentina, Aruba, the Bahamas, Barbados, Bermuda, Brunei, 487330-001 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 For use in Austria, Azerbaijan, Bahrain, Belgium, Brazil, Bulgaria, Croatia, Cyprus, the Czech...
Page 28 Item Description Spare part number ● For use in Afghanistan, Albania, Algeria, Andorra, Angola, Antigua & Barbuda, 459263-002 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, Croatia, Cyprus, the Czech Republic, Denmark, Djibouti, Dominica, the Dominican Republic, East Timor,...
Page 29: Plastics Kit
Plastics Kit Item Description Spare part number Plastics Kit: 456614-001 Hard drive bay cover (includes 2 captive screws, secured by C-clips) WLAN module compartment cover (includes one captive screw, secured by a C-clip) ExpressCard slot protective insert Memory module compartment cover (includes one captive screw, secured by a C-clip) Optical drive bay protective insert (not illustrated) Plastics Kit...
Page 30: Cable Kit
Cable Kit Item Description Spare part number Cable Kit: 456594-001 RJ-11 jack cable Display lid switch module and cable Bluetooth module cable Chapter 3 Illustrated parts catalog...
Page 31: Mass Storage Devices
Mass storage devices Item Description Spare part number Optical drives (include bezel and bracket) 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: DVD±RW and CD-RW SuperMulti Double-Layer Combo Drive with LightScribe 507116-001 DVD/CD-RW Combo Drive...
Page 32: Miscellaneous Parts
Miscellaneous parts Description Spare part number 65-W AC adapter 417220-001 Logo Kit 495408-001 Nylon carrying case 325814-001 USB 1.1 diskette drive 359118-001 Power cords: For use in Argentina 490371-D01 For use in Australia 490371-011 For use in Brazil 490371-201 For use in Denmark 490371-081 For use in Europe, the Middle East, and Africa 490371-021...
Page 33: Sequential Part Number Listing
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 ●...
Page 34 Spare part Description number 441082-002 Intel 802.11a/b/g WLAN module for use in Austria, Azerbaijan, Bahrain, Belgium, Brazil, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Egypt, Estonia, Finland, France, Georgia, Germany, Greece, Hungary, Iceland, Ireland, Israel, Italy, Latvia, Lebanon, Liechtenstein, Lithuania, Luxembourg, Malta, Monaco, the Netherlands, Norway, Oman, the Philippines, Poland, Portugal, Qatar, Romania, Russia, Serbia and Montenegro, Singapore, Slovakia, Slovenia, South Africa, Spain, Sri Lanka, Sweden, Switzerland, Turkey, Ukraine, the United Kingdom, and Uzbekistan...
Page 35 Spare part Description number 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 802.11b/g WLAN module for use in Afghanistan, Albania, Algeria, Andorra, Angola, Antigua and Barbuda, Argentina, Armenia, Aruba, Australia, Austria, Azerbaijan, the Bahamas, Bahrain, Bangladesh, Barbados, Belarus, Belgium, Belize, Benin, Bermuda, Bhutan, Bolivia, Bosnia and Herzegovina, Botswana, Brazil, the British Virgin Islands, Brunei, Bulgaria, Burkina Faso, Burundi, Cameroon, Cape Verde, the Central...
Page 36 Spare part Description number 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...
Page 37 Spare part Description number 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...
Page 38 Spare part Description number 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 1.73-GHz processor (1-MB L2 cache, 533-MHz FSB)
Page 39: Removal And Replacement Procedures
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.
Page 40: Cables And Connectors
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.
Page 41: Grounding Guidelines
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.
Page 42: Packaging And Transporting Guidelines
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.
Page 43: Equipment Guidelines
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.
Page 44: Unknown User Password
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. 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.
Page 45: Component Replacement Procedures
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. ●...
Page 46: Computer Feet
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. Chapter 4 Removal and replacement procedures...
Page 47: Battery
Battery Description Spare part number 6-cell, 47-Wh Li-ion battery 500764-001 Before disassembling the computer, follow these steps: 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. Disconnect all external devices connected to the computer.
Page 48: Hard Drive
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: Shut down the computer.
Page 49 Remove the hard drive (4) from the hard drive bay. 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. Lift the bracket (2) straight up to remove it from the hard drive. Reverse this procedure to reassemble and install the hard drive.
Page 50: Wlan Module
WLAN module Description Spare part number Intel 802.11a/b/g/n WLAN modules: ● For use in Antigua and Barbuda, Argentina, Aruba, the Bahamas, Barbados, Bermuda, Brunei, 441086-001 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, Uruguay, the United States, Venezuela, and Vietnam ●...
Page 51 Description Spare part number ● For use in Afghanistan, Albania, Algeria, Andorra, Angola, Antigua & Barbuda, Argentina, 459263-002 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, Croatia, Cyprus, the Czech Republic, Denmark, Djibouti, Dominica, the Dominican Republic, East Timor, Ecuador, Egypt, El Salvador, Equitorial Guinea, Eritrea,...
Page 52 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. 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”...
Page 53: Memory Module
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: 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.
Page 54: Optical Drive
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.
Page 55 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 (see Battery on page 39). Remove the optical drive: Position the computer with the right side toward you. Remove the slotted Torx ST8M2.5×7.0 screw (1) that secures the optical drive to the computer.
Page 56: Switch Cover
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: 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.
Page 57 Remove the switch cover (2) by lifting it straight up. Reverse this procedure to install the switch cover. Component replacement procedures...
Page 58: Keyboard
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...
Page 59 Remove the two slotted Torx ST8M2.5×7.0 screws that secure the keyboard to the computer. Turn the computer display-side up, with the front toward you. Open the computer as far as possible. Lift the rear edge of the keyboard (1) and slide it back until it rests on the display assembly (2). Component replacement procedures...
Page 60 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. Remove the keyboard. Reverse this procedure to install the keyboard. Chapter 4 Removal and replacement procedures...
Page 61: Speaker
Speaker Description Spare part number Speaker 456593-001 Before removing the speaker, follow these steps: 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. Disconnect all external devices connected to the computer.
Page 62: Display Lid Switch Module
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: 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.
Page 63: Display Assembly
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: Shut down the computer.
Page 64 Turn the computer right-side up, with the front toward you. Open the computer as far as possible. Disconnect the display panel cables (1) and (2) from the system board. Remove the wireless antenna cables (3) from the clips and routing channels built into the top cover. Remove the four slotted Torx ST8M2.5×7.0 screws (1) that secure the display assembly to the computer.
Page 65 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.
Page 66 Disconnect the display panel cable (2) and the backlight cable (3) from the display inverter. Remove the display inverter. The display inverter is available using spare part number 456618-001. 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.
Page 67 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. Component replacement procedures...
Page 68: Top Cover
Top cover NOTE: The top cover includes the TouchPad board and cable, and the TouchPad button board and cable. Description Spare part number Top cover 495399-001 Before removing the top cover, follow these steps: 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.
Page 69 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 Turn the computer right-side up, with the left side toward you. Press in on the ExpressCard slot eject button (1) two times. The first press releases the ExpressCard slot eject button.
Page 70 Release the ZIF connector (4) to which the TouchPad cable is connected and disconnect the TouchPad cable (5) from the system board. Remove the top cover. Reverse this procedure to install the top cover. Chapter 4 Removal and replacement procedures...
Page 71: Touchpad Board And Touchpad Button Board
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: 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.
Page 72 Remove the two Phillips PM2.0×4.0 screws (4) that secure the TouchPad bracket to the computer. Release the TouchPad bracket (1) by sliding it back. Remove the TouchPad bracket (2) by lifting it straight up. Remove the TouchPad button board (3). Remove the TouchPad button board cable (4) from the opening in the TouchPad bracket.
Page 73: Bluetooth Module
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.
Page 74: System Board
Display lid switch module (see Display lid switch module on page Display assembly (see Display assembly on page Top cover (see Top cover on page Remove the Bluetooth module: Disconnect the Bluetooth module cable (1) from the system board. Remove the two Phillips PM2.0×4.0 screws (2) that secure the Bluetooth module to the base enclosure.
Page 75 Before removing the system board, follow these steps: 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. Disconnect all external devices connected to the computer. 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.
Page 76 Disconnect the fan cable (3) and the Bluetooth module cable (4) from the system board. 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 Flex the left side of the base enclosure (1) until the external monitor connector (2) is clear of the opening in the base enclosure.
Page 77 Remove the system board (4) from the base enclosure by sliding it back. 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).
Page 78: Fan
Description Spare part number 431312-001 Before removing the fan, follow these steps: 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. Disconnect all external devices connected to the computer.
Page 79 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.
Page 80: Heat Sink
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: 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.
Page 81 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.
Page 82: Processor
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 ●...
Page 83 Remove the processor: Turn the system board upside down, with the USB connectors toward you. Use a flat-bladed screwdriver to turn the processor locking screw (1) one-half turn counterclockwise until you hear a click. 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.
Page 84: Modem Module
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...
Page 85 Lift the modem module (2) straight up to disconnect it from the system board. Remove the modem module. Reverse this procedure to install the modem module. Component replacement procedures...
Page 86: Rtc Battery
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: Shut down the computer.
Page 87: Expresscard Assembly
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: Shut down the computer.
Page 88 Remove the ExpressCard assembly: Turn the system board upside down, with the USB connectors toward you. 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. Turn the system board right-side up, with the USB connectors toward you. Remove the ExpressCard assembly from the system board.
Page 89: Computer Setup
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.
Page 90: Using Computer Setup
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. Open Computer Setup by turning on or restarting the computer, and then pressing while the "F10 = ROM Based Setup"...
Page 91: Computer Setup Menus
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 ●...
Page 92: Security Menu
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. ● DriveLock passwords Enable/disable DriveLock on any computer hard drive and on optional MultiBay hard drives.
Page 93: System Configuration Menu
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 delay when starting up. ●...
Page 94 LAN when not in use. ● Enable/disable SATA Native Mode. ● Enable/disable Dual Core CPU. ● Enable/disable Secondary Battery Fast Charge. ● Choose Bit-shift or LBA assisted HDD Translation Mode. ● Enable/disable Windows direct application launcher. ● Enable/disable HP Lockout. Chapter 5 Computer Setup...
Page 95 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.
Page 96: Specifications
Specifications Computer specifications Metric U.S. Dimensions 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 Input power Operating voltage 19.0 V dc @ 4.74 A –...
Page 97: 15.4-Inch, Wxga Display Specifications
Metric U.S. Nonoperating 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.
Page 98: Hard Drive Specifications
Hard drive specifications 250-GB* 160-GB* 120-GB* Dimensions Height 9.5 mm 9.5 mm 9.5 mm Width 70 mm 70 mm 70 mm Weight 101 g 101 g 101 g Interface type SATA SATA SATA Transfer rate 100 MB/sec 100 MB/sec 100 MB/sec Security ATA security ATA security...
Page 99: Dvd±Rw And Cd-Rw Supermulti Double-Layer Combo Drive With Lightscribe Specifications
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, CD- CD-R and CD-RW ROM, CD-ROM XA, MIXED MODE CD, CD-I, DVD+R, DVD+RW, DVD-R, DVD- CD-I Bridge (Photo-CD, Video CD), Multisession RW, DVD-RAM CD (Photo-CD, CD-EXTRA, Portfolio, CD-R, CD- RW), CD-R, CD-RW, DVD-ROM (DVD-5, DVD-9, DVD-10, DVD-18), DVD-R, DVD-RW,...
Page 100: Dvd/Cd-Rw Combo Drive Specifications
DVD/CD-RW Combo Drive specifications Applicable disc Read: Write: CD-DA, CD+(E)G, CD-MIDI, CD-TEXT, CD- CD-R and CD-RW ROM, CD-ROM XA, MIXED MODE CD, CD-I, CD-I Bridge (Photo-CD, Video CD), Multisession CD (Photo-CD, CD-EXTRA, Portfolio, CD-R, CD- RW), CD-R, CD-RW, DVD-ROM (DVD-5, DVD-9, DVD-10, DVD-18), DVD-R, DVD-RW, DVD+R, DVD+RW, DVD-RAM Access time...
Page 101: System Dma Specifications
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 DMA specifications...
Page 102: System Interrupt Specifications
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*...
Page 103: System I/O Address Specifications
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. 1 022 - 024 Opti chipset configuration registers 025 - 03F Unused 02E - 02F 87334 “Super I/O”...
Page 104 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...
Page 105: System Memory Map Specifications
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...
Page 106: Screw Listing
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. Chapter 7 Screw listing...
Page 107: Phillips Pm2.0×5.0 Captive Screw
Phillips PM2.0×5.0 captive screw Color Quantity Length Thread Head diameter Black 5.0 mm 2.0 mm 5.0 mm Where used: (1) Two captive screws that secure the hard drive bay cover to the computer (screws are captured on the cover by C-clips) (2) One captive screw that secures the WLAN module compartment cover to the computer (screw is captured on the cover by a C-clip) (3) One captive screw that secures the memory module compartment cover to the computer (screw is...
Page 108: Phillips Pm2.5×12.0 Captive Screw
Phillips PM2.5×12.0 captive screw Color Quantity Length Thread Head diameter Silver 12.0 mm 2.5 mm 5.0 mm Where used: One captive screw that secures the hard drive to the computer (screw is secured to the hard drive bracket) 100 Chapter 7 Screw listing...
Page 109: Phillips Pm3.0×4.0 Screw
Phillips PM3.0×4.0 screw Color Quantity Length Thread Head diameter Silver 4.0 mm 3.0 mm 5.0 mm Where used: 4 screws that secure the hard drive bracket to the hard drive Phillips PM3.0×4.0 screw 101...
Page 110: Phillips Pm2.5×4.0 Screw
Phillips PM2.5×4.0 screw Color Quantity Length Thread Head diameter Black 4.0 mm 2.5 mm 5.0 mm Where used: 2 screws that secure the WLAN module to the system board Where used: 2 screws that secure the modem module to the system board 102 Chapter 7 Screw listing...
Page 111: Slotted Torx St8M2.5×7.0 Screw
Slotted Torx ST8M2.5×7.0 screw Color Quantity Length Thread Head diameter Black 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 ST8M2.5×7.0 screw 103...
Page 112 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...
Page 113: Phillips Pm2.0×4.0 Screw
Phillips PM2.0×4.0 screw Color Quantity Length Thread Head diameter Silver 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 PM2.0×4.0 screw 105...
Page 114 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...
Page 115: Torx T8M2.5×9.0 Screw
Torx T8M2.5×9.0 screw Color Quantity Length Thread Head diameter Black 9.0 mm 2.5 mm 5.0 mm Where used: 2 screws that secure the switch cover to the computer Torx T8M2.5×9.0 screw 107...
Page 116: Torx T8M2.5×3.0 Broadhead Screw
Torx T8M2.5×3.0 broadhead screw Color Quantity Length Thread Head diameter Black 3.0 mm 2.5 mm 8.0 mm Where used: 3 screws that secure the switch cover to the computer 108 Chapter 7 Screw listing...
Page 117: Torx T8M2.5×4.0 Screw
Torx T8M2.5×4.0 screw Color Quantity Length Thread Head diameter Black 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 T8M2.5×4.0 screw 109...
Page 118 Where used: One screw that secures the system board to the base enclosure 110 Chapter 7 Screw listing...
Page 119: Phillips Pm2.0×2.0 Broadhead Screw
Phillips PM2.0×2.0 broadhead screw Color Quantity Length Thread Head diameter Black 2.0 mm 2.0 mm 7.0 mm Where used: 3 screws that secure the top cover to the display enclosure Phillips PM2.0×2.0 broadhead screw 111...
Page 120: Torx T8M2.5×6.0 Screw
Torx T8M2.5×6.0 screw Color Quantity Length Thread Heat width Black 6.0 mm 2.5 mm 5.0 mm Where used: 8 screws that secure the display bezel to the display assembly Where used: 4 screws that secure the display panel to the display enclosure 112 Chapter 7 Screw listing...
Page 121: Phillips Pm2.0×6.0 Screw
Phillips PM2.0×6.0 screw Color Quantity Length Thread Head diameter Black 6.0 mm 2.0 mm 4.5 mm Where used: One screw that secures the system board to the base enclosure Phillips PM2.0×6.0 screw 113...
Page 122: Torx T8M2.0×4.0 Screw
Torx T8M2.0×4.0 screw Color Quantity Length Thread Head diameter Black 4.0 mm 2.0 mm 4.5 mm Where used: 2 screws that secure the optical drive connector board to the base enclosure 114 Chapter 7 Screw listing...
Page 123: Phillips Pm2.5×7.0 Screw
Phillips PM2.5×7.0 screw Color Quantity Length Thread Head diameter Black 7.0 mm 2.5 mm 5.0 mm Where used: One screw that secures the fan to the base enclosure Phillips PM2.5×7.0 screw 115...
Page 124: Phillips Pm2.5×7.0 Captive Screw
Phillips PM2.5×7.0 captive screw Color Quantity Length Thread Head diameter Silver 7.0 mm 2.5 mm 5.0 mm Where used: One captive screw that secures the fan to the base enclosure (screw is secured to the fan by a C-clip) 116 Chapter 7 Screw listing...
Page 125: Phillips Pm2.5×10.0 Captive Screw
Phillips PM2.5×10.0 captive screw Color Quantity Length Thread Head diameter Silver 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 PM2.5×10.0 captive screw 117...
Page 126: Phillips Pm2.0×8.0 Screw
Phillips PM2.0×8.0 screw Color Quantity Length Thread Head diameter Black 8.0 mm 2.0 mm 4.5 mm Where used: 2 screws that secure the ExpressCard assembly to the system board 118 Chapter 7 Screw listing...
Page 127: Backup And Recovery
Backup and recovery...
Page 128: Backup And Recovery In Windows Vista
NOTE: For detailed instructions, perform a search for these topics in Help and Support. NOTE: In case of system instability, HP recommends that you print the recovery procedures and save them for later use. Backing up your information Recovery after a system failure is as complete as your most current backup. You should create your initial backup immediately after software setup.
Page 129: Performing A Recovery
The screen image is added to the document. 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.
Page 130: Using F11
If possible, back up all personal files. If possible, check for the presence of the Windows partition and the HP Recovery partition. To find the partitions, select Start > Computer. NOTE:...
Page 131 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.
Page 132: Backup And Recovery In Windows Xp
NOTE: For detailed instructions, perform a search for these topics in Help and Support. NOTE: In case of system instability, HP recommends that you print the recovery procedures and save them for later use. Backing up your information Recovery after a system failure is as complete as your most current backup. You should create your initial backup immediately after software setup.
Page 133: Performing A Recovery
The recovery process reinstalls the original operating system, software, and drivers. Software, drivers, and updates not installed by HP must be manually reinstalled. To recover your operating system and programs, follow these steps: If possible, back up all personal files.
Page 134: Connector Pin Assignments
Connector pin assignments Audio-out (headphone) Signal Audio out, left channel Audio out, right channel Ground Audio-in (microphone) Signal Audio signal in Audio signal in Ground 126 Chapter 9 Connector pin assignments...
Page 135: External Monitor
External monitor Signal Red analog Green analog Blue analog Not connected Ground Ground analog Ground analog Ground analog +5 VDC Ground Monitor detect DDC 2B data Horizontal sync Vertical sync DDC 2B clock External monitor 127...
Page 136: Modem)
RJ-11 (modem) Signal Unused Ring Unused Unused Unused 128 Chapter 9 Connector pin assignments...
Page 137: Network)
RJ-45 (network) Signal Transmit + Transmit - Receive + Unused Unused Receive - Unused Unused Universal Serial Bus Signal +5 VDC Data - Data + Ground RJ-45 (network) 129...
Page 138: 10 Power Cord Set Requirements
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.
Page 139: Requirements For Specific Countries And Regions
Requirements for specific countries and regions Country/region Accredited agency Applicable note number Australia EANSW Austria Belgium CEBC Canada Denmark DEMKO Finland FIMKO France Germany Italy Japan METI The Netherlands KEMA Norway NEMKO The People's Republic of China South Korea Sweden SEMKO Switzerland Taiwan...
Page 140: 11 Recycling
NOTE: Materials Disposal. This HP product contains mercury in the backlight in the display assembly that might require special handling at end-of-life. Disposal of mercury may be regulated because of environmental considerations. For disposal or recycling information, contact your local authorities, or see the Electronic Industries Alliance (EIA) Web site at http://www.eiae.org.
Page 141 Perform the following steps to disassemble the display assembly: Remove all screw covers (1) and screws (2) that secure the display bezel to the display assembly. 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.
Page 142 Disconnect all display panel cables (1) from the display inverter and remove the inverter (2). Remove all screws (1) that secure the display panel assembly to the display enclosure. Remove the display panel assembly (2) from the display enclosure. Turn the display panel assembly upside down. Remove all screws that secure the display panel frame to the display panel.
Page 143 Remove the display panel frame (2) from the display panel. Remove the screws (1) that secure the backlight cover to the display panel. Lift the top edge of the backlight cover (2) and swing it outward. Remove the backlight cover. Turn the display panel right-side up.
Page 144 Remove the backlight cables (1) from the clip (2) in the display panel. 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. Remove the backlight frame from the display panel.
Page 145 Remove the backlight from the backlight frame. Disconnect the display panel cable (1) from the LCD panel. Remove the screws (2) that secure the LCD panel to the display rear panel. Release the LCD panel (3) from the display rear panel. Release the tape (4) that secures the LCD panel to the display rear panel.
Page 146: Index
Index TouchPad 6 connectors AC adapter, spare part wireless 7 power 11 number 24, 25 service considerations 32 antenna, disconnecting 44 creating a backup 120 Cable Kit antennae 13 contents 22 audio, product description 3 spare part number 20, 22, Diagnostics menu 84 audio-in jack discs...
Page 147 display panel product description 1 removal 70 jacks removal 58 spare part number 17, 25, audio-in 9 display specifications 89 audio-out 9 DriveLock password 84 feet headphone 9 Driver Recovery disc 125 locations 38 microphone 9 drives spare part number 38 modem 11 boot order 85 File menu 83...
Page 148 removal 45 passwords 84 diskette drive 3 spare part numbers 20, 29, pin assignments display panel 1 audio-in jack 126 Ethernet 3 memory module compartment 12 audio-out jack 126 external media cards 3 memory module compartment external monitor port 127 graphics 1 cover headphone jack 126...
Page 149 security, product description 4 top components 6 serial number 14, 37 top cover service considerations 31 removal 60 serviceability, product spare part number 17, 28, description 5 setup utility TouchPad Diagnostics menu 84 spare part number 17, 28 File menu 83 TouchPad board Security menu 84 removal 63...

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Ks158ut - 550 - celeron 2 ghz Ks159ut - 550 - core 2 duo 1.8 ghz

HP 550 Maintenance And Service Manual

1 Product Description

2 External Component Identification

3 Illustrated Parts Catalog

4 Removal and Replacement Procedures

5 Computer Setup

6 Specifications

7 Screw Listing

8 Backup and Recovery

9 Connector Pin Assignments

10 Power Cord Set Requirements

11 Recycling

Index

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