Compaq 6820s HP Compaq 6820s Notebook PC - Maintenance and Service Guide
Compaq 6820s - Notebook PC Manual
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- Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 1
HP Compaq 6820s Notebook PC Maintenance and Service Guide - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 2
and Windows Vista are either trademarks or registered trademarks of Microsoft Corporation in the United States and/or other countries. SD Logo is a trademark of its proprietor. The information contained herein is subject to change without notice. The only warranties for HP products and services are - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 3
, does not include the TouchPad board and cable or the TouchPad button board and cable. This information has been updated in the following locations: Computer major components on page 12, Sequential part number listing on page 22, and Top cover on page 55. The TouchPad board and cable are available - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 4
iv MSG revision history - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 5
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. Also, do not allow the AC adapter to contact the skin or a soft surface, such as - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 6
vi Safety warning notice - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 7
storage devices ...20 Miscellaneous parts ...21 Sequential part number listing ...22 4 Removal and replacement procedures Preliminary replacement requirements 27 Tools required ...27 Service considerations ...27 Plastic parts ...27 Cables and connectors 28 Drive handling 28 Grounding guidelines - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 8
Restoring factory settings in Computer Setup 76 Computer Setup menus ...77 File menu ...77 Security menu ...78 Diagnostics menu ...78 System Configuration menu 79 6 Specifications Computer specifications ...80 17.0-inch, WXGA display specifications 81 Hard drive specifications ...82 DVD±RW and CD - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 9
System memory map specifications recovery in Windows Vista 114 Performing a recovery from the recovery discs 114 Performing a recovery from the hard drive 114 Initiating a recovery in Windows 115 Initiating a recovery from the hard drive recovery partition 115 Creating recovery discs in Windows - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 10
a recovery in Windows 121 Initiating a recovery from the hard drive recovery partition 122 9 Connector pin assignments Audio-out (headphone) ...123 Audio-in (microphone) ...123 External monitor ...124 RJ-11 (modem) ...125 RJ-45 (network) ...125 Universal Serial Bus ...126 10 Power cord set - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 11
Product description Category Product Name Processors Chipset Graphics Panel Description HP Compaq 6820s Notebook PC Intel® Core™ 2 Duo processors ● X1350 ATI-M62s graphics subsystem with up to 128-MB DDR1 or 128-MB DDR2 discrete graphics subsystem memory All display assemblies include 2 wireless - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 12
Category Memory Hard drives Optical drives Diskette drive Description 2 customer-accessible/upgradable memory module slots Support for dual-channel memory Support for up to 4 GB of system RAM PC2-5300, 667-MHz, DDR2 Support for the following configurations: ● 4096-MB total system memory (2048 × 2, - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 13
(SD) Memory Card and MultiMediaCard (MMC) Audio-in (mono 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 auto-detect) 2-pin AC power 14.45 - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 14
® XP Professional FreeDOS Restore media: Windows Vista Basic 32 Windows Vista Home Premium Windows Vista Business 32 Windows XP Professional DRDVD Vista Certified: Microsoft® WHQL End-user replaceable parts: AC adapter Battery (system) Hard drive Memory module Optical drive WLAN module 4 Chapter - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 15
(4) TouchPad scroll zone Scrolls up or down. *This table describes factory settings. View or change pointing device preferences as follows: ● In Windows Vista, select Start > Control Panel > Hardware and Sound > Mouse. ● In Windows XP, select Start > Control Panel > Printers and Other Hardware - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 16
local area network (WLAN) device, the HP Broadband Wireless Module, and/or a Bluetooth® power settings, follow these steps: ● In Windows Vista, select Start > Control Panel > System and Maintenance > Power Options. ● In Windows XP, select Start > Control Panel > Performance and Maintenance > Power - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 17
Sleep state (Windows Vista) or Standby (Windows XP). ● Off: The computer is off or in Hibernation. Produces sound. Item (1) Component esc key (2) fn key (3) Windows logo key (4) Windows applications key (5) Numeric keypad keys (6) Function keys Function Displays system information when - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 18
optional powered stereo speakers, headphones, ear buds, a headset, or television audio. Connects an optional computer headset microphone, stereo array microphone, or monaural microphone. Supports the following optional digital card formats: SD Memory Card and MMC. Item (1) Component Optical drive - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 19
computer is not plugged into an external power source, the light stays off until the battery reaches a low battery level. Supports optional ExpressCards. Connects a modem cable. Enables airflow to cool internal components. NOTE: The computer fan starts up automatically to cool internal components - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 20
latches (2) Memory module compartment Vents (4) (5) Hard drive bay (6) WLAN module compartment (select models only) Function Holds the battery. Release the battery from the battery bay. Contains 2 memory module slots. Enable airflow to cool internal components. NOTE: The computer fan starts up - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 21
3 Illustrated parts catalog Serial number location When ordering parts or requesting information, provide the computer serial number and model number located on the bottom of the computer. Serial number location 11 - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 22
Computer major components 12 Chapter 3 Illustrated parts catalog - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 23
Display internal components: Display enclosure (includes display bezel, 2 WLAN antenna transceivers and cables) Display hinges (includes left and right hinges) Display inverter Switch cover (includes button board and cable) Keyboards the United States Speaker Spare part number 456582-001 456583-001 - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 24
) System boards (include replacement thermal material) Includes 128-MB of DDR2 graphics subsystem memory Includes 64-MB of DDR2 graphics subsystem memory Includes 128-MB of DDR1 graphics subsystem memory Includes 64-MB of DDR1 graphics subsystem memory Battery connector board Optical drive connector - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 25
cache, 533-MHz FSB) 446888-001 446889-001 459462-001 RTC battery 449137-001 Modem module 441074-001 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 457615-001. See Cable Kit on page 19 for more - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 26
Item Description Spare part number ● For use in Afghanistan, Albania, Algeria, Andorra, Angola, Antigua and Barbuda, 441075-002 Argentina, Armenia, Aruba, , Switzerland, Turkey, Ukraine, the United Kingdom, and Uzbekistan Broadcom 802.11b/g WLAN modules: 16 Chapter 3 Illustrated parts catalog - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 27
-001 Hard drives (include hard drive bracket) 250-GB, 5400-rpm 457613-001 160-GB, 5400-rpm 457014-001 120-GB, 5400-rpm 457013-001 80-GB, 5400-rpm 457012-001 Optical drives (include bezel and bracket) DVD±RW and CD-RW Double-Layer Combo Drive with LightScribe 456799-001 DVD±RW and CD-RW - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 28
Kit: (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 bezel (4) Memory module compartment cover (includes one captive screw, secured by a C-clip) Spare part number 456614 - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 29
Cable Kit Item Description Cable Kit: (1) RJ-11 jack cable (2) Display lid switch module and cable (3) Bluetooth module cable Spare part number 457615-001 Cable Kit 19 - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 30
Multi Double-Layer Combo Drive with LightScribe DVD±RW and CD-RW Super Multi Double-Layer Combo Drive Blu-ray Disc ROM and SuperMulti DVD±R/RW Double-Layer Drive DVD/CD-RW Combo Drive (2) Hard drives (include bracket) 250-GB, 5400-rpm 160-GB, 5400-rpm 120-GB, 5400-rpm 80-GB, 5400-rpm Spare part - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 31
Miscellaneous parts Description 90-W AC adapter Logo Kit Nylon carrying case USB 1.1 diskette drive Power cords: For use in Torx T8M2.5×6.0 screw ● Torx T8M2.5×4.0 screw ● Torx T8M2.5×3.0 broad-head screw Spare part number 458220-001 456617-001 325814-001 359118-001 342714-011 342714-081 342714-021 - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 32
Sequential part number listing Spare part number Description 325814-001 342714-001 Nylon carrying case Power cord for use in the United States 342714-011 342714-021 342714-031 Power cord for use in Australia and New Zealand Power cord for use in Europe, the Middle East, Africa Power cord for - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 33
Spare part number 441075-002 441082-001 441082-002 441086-001 441086-002 441090-001 Description Broadcom 802.11a/b/g WLAN module for use in 802.11b/g WLAN module for use in Canada, Cayman Islands, Guam, Puerto Rico, the U.S. Virgin Islands, and the United States Sequential part number listing 23 - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 34
DVD±R/RW Double-Layer Drive Switch cover (includes button board and cable) 17.0-inch WXGA display assembly with AntiGlare (includes 2 wireless antenna transceivers and cables) 17.0-inch WXGA display assembly with BrightView (includes 2 wireless antenna transceivers and cables) Display hinges - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 35
456612-001 System board with 64-MB DDR2 graphics subsystem memory (includes replacement thermal material) 456613-001 System board with 128-MB DDR2 graphics subsystem memory (includes replacement thermal material) 456614-001 Plastics Kit (see Plastics Kit on page 18 for more Plastics Kit spare part - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 36
and bracket) DVD±RW and CD-RW Super Multi Double-Layer Combo Drive with LightScribe (includes bezel and bracket) DVD±RW and CD-RW Super Multi Double-Layer Combo Drive (includes bezel and bracket) Optical drive connector board 6-cell, 55-Wh Li-ion battery 80-GB, 5400-rpm hard drive (includes bracket - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 37
) away from the work area to prevent damage. Plastic parts Using excessive force during disassembly and reassembly can damage plastic parts. Use care when handling the plastic parts. Apply pressure only at the points designated in the maintenance instructions. Preliminary replacement requirements 27 - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 38
loss of information, observe these precautions: Before removing or inserting a hard drive, 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. Before handling a drive, be sure that you are - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 39
integrated circuits provide some protection, but in many cases, ESD contains enough power to alter device parameters or melt silicon junctions. . CAUTION: To prevent damage to the computer when you are removing or installing internal components, observe these precautions: Keep components in their - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 40
Keep the work area free of nonconductive materials, such as ordinary plastic assembly aids and Styrofoam. ● Handle ESD-sensitive components, parts, and assemblies by the case or PCM laminate. Handle these items only at static-free workstations. ● Avoid contact with pins, leads, or circuitry. ● Turn - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 41
system. Wrist straps are flexible straps with a minimum of one megohm ±10% resistance in the ground cords workstations and are compatible with most types of shoes or boots. On cords of one megohm resistance ● Static-dissipative tables or floor mats with hard ties to the ground ● Field service - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 42
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 35). 5. Remove the real - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 43
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 - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 44
Computer feet The computer feet are adhesive-backed rubber pads. The feet are included in the Rubber Kit, spare part number 456616-001. There are 6 rubber feet that attach to the base enclosure in the locations illustrated below. 34 Chapter 4 Removal and replacement procedures - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 45
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. Remove the battery: 1. Turn the computer upside - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 46
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 35). Remove the hard drive - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 47
Mylar tab (2) on the hard drive and slide the hard drive (3) to the left to disconnect it from the system board. 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 - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 48
WLAN module Description Spare part number Intel 802.11a/b/g/n WLAN modules: ● For use in Antigua and Barbuda, Argentina, Aruba, the Bahamas, , South Africa, Spain, Sri Lanka, Sweden, Switzerland, Turkey, Ukraine, the United Kingdom, and Uzbekistan 38 Chapter 4 Removal and replacement procedures - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 49
Zaire, Zambia, and Zimbabwe CAUTION: To prevent an unresponsive system, replace the wireless module only with a wireless module a warning message, remove the module to restore computer functionality, and then contact technical support through Help and Support. Before removing the WLAN module, - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 50
the power cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 35). Remove the 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 - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 51
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 35). Remove the memory module - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 52
. Reverse this procedure to install a memory module. Optical drive NOTE: All optical drive spare part kits include an optical drive bezel. Description DVD±RW and CD-RW Super Multi Double-Layer Combo Drive with LightScribe 42 Chapter 4 Removal and replacement procedures Spare part number 456799-001 - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 53
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 35). Remove the optical drive - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 54
7. Remove the optical drive bracket (2). Reverse this procedure to reassemble and install an optical drive. 44 Chapter 4 Removal and replacement procedures - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 55
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 35). Component - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 56
: (1) Two Torx T8M2.5×9.0 screws (2) Two Torx T8M2.5×7.0 screws (3) Three Torx T8M2.5×3.0 broad-head screws 2. Remove the two Torx T8M2.5×7.0 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. 46 - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 57
straight up until it disengages from the computer, and slide it back (2) until it rests on the display assembly. 6. Lift the rear edge of the keyboard (1) until it rests at an angle, and slide it back (2) until it rests on the display assembly and switch cover. Component replacement procedures 47 - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 58
7. 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. 8. Remove the keyboard. 9. Release the ZIF connector (1) to which the button board cable is attached, and disconnect the button board cable - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 59
the power cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 35). 5. Remove the switch cover and keyboard (see Switch cover and keyboard on page 45). Remove the speaker: 1. Disconnect the speaker cable (1) from the system board - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 60
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 35). 5. Remove the - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 61
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 35 - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 62
assembly (2) straight up and remove it. 5. 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 - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 63
cable will allow. 9. Disconnect the display panel cable (2) and the backlight cable (3) from the display inverter. 10. Remove the display inverter. The display inverter is available using spare part number 457621-001. 11. If it is necessary to replace the display hinges, remove the four Torx T8M2 - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 64
12. Remove the display panel (2). 13. Remove the four Phillips PM2.0×4.0 screws (1) that secure each display hinge to the display panel. 14. Remove the display hinges (2). The left and right display hinges are available using spare part number 456584-001. Reverse this procedure to reassemble and - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 65
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 35). 5. Remove the following components: a. Hard drive (see Hard drive on page 36) b. Optical drive (see Optical drive on page 42) c. Switch - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 66
first press releases the ExpressCard slot eject button. The second press releases the ExpressCard slot bezel from the ExpressCard slot. 5. Remove the ExpressCard slot bezel (2). 6. Remove the three Torx T8M2.5×7.0 screws (3) that secure the top cover to the computer. 7. Lift the rear edge of the top - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 67
10. Release the ZIF connector (4) to which the TouchPad cable is connected and disconnect the TouchPad cable from the system board. 11. Remove the top cover. Reverse this procedure to install the top cover. Component replacement procedures 57 - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 68
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 35). 5. Remove the following components: a. Hard drive (see Hard drive on page 36) b. Optical drive (see Optical drive on page 42) c. Switch - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 69
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. Component - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 70
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 35). 5. Remove the following components: a. Hard drive (see Hard drive on page 36) b. Optical drive (see Optical drive on page 42) c. Switch - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 71
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. Component replacement procedures 61 - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 72
4. Remove the battery (see Battery on page 35). 5. Remove the following components: a. Hard drive (see Hard drive on page 36) b. Optical drive (see Optical drive on page 42) c. Switch cover and keyboard (see Switch cover and keyboard on page 45) d. Speaker (see Speaker on page 49) e. Display lid - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 73
3. Remove the following screws: (1) One Torx T8M2.5×6.0 screw that secures the system board to the base enclosure (2) Three Torx T8M2.5×6.0 screws that secure the battery connector board to the base enclosure (3) Four Torx T8M2.5×4.0 screws that secure the optical drive connector board to the base - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 74
connectors on the system board. The battery connector board is available using spare part number 457620-001. The optical drive connector board is available using spare part number 456805-001. Reverse the preceding procedure to install the system board. 64 Chapter 4 Removal and replacement procedures - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 75
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 35). 5. Remove the following components: a. Hard drive (see Hard drive on page 36) b. Optical drive (see Optical drive on page 42) c. Switch - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 76
external temperatures, system power consumption, power management/battery conservation configurations, battery fast charging, and software requirements. Exhaust air is displaced through the ventilation grill located on the left side of the computer. 66 Chapter 4 Removal and replacement procedures - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 77
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 35). 5. Remove the following components: a. Hard drive (see Hard drive on page 36) b. Optical drive (see Optical drive on page 42) c. Switch - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 78
the heat sink (1), (2), and (3) and the processor (4), Northbridge chip (5), and graphics subsystem memory (6) each time the heat sink is removed. Thermal material is included with all heat sink, system board, and processor spare part kits. Reverse this procedure to install the heat sink. 68 Chapter - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 79
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 35). 5. Remove the following components: a. Hard drive (see Hard drive on page 36) b. Optical drive (see Optical drive on page 42) c. Switch - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 80
Speaker on page 49) e. Display lid switch module (see Display lid switch module on page 50) f. Display assembly (see Display assembly on page 51) g. Top cover (see Top cover on page 55) h. System board (see System board on page 61) Remove the processor: 1. Turn the system board upside down, with the - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 81
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 35). 5. Remove the following components: a. Hard drive (see Hard drive on page 36) b. Optical drive (see Optical drive on page 42) c. Switch - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 82
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. 72 Chapter 4 Removal and replacement procedures - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 83
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 35). 5. Remove the following components: a. Hard drive (see Hard drive on page 36) b. Optical drive (see Optical drive on page 42) c. Switch - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 84
2. Remove the RTC battery from the socket on the system board. Reverse this procedure to install the RTC battery. 74 Chapter 4 Removal and replacement procedures - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 85
An external keyboard connected by USB can be used with Computer Setup only if USB legacy support is enabled. To start Computer Setup: 1. Turn on or restart the computer. 2. Before Windows® opens and while the "F10 = ROM Based Setup" message is displayed in the lower-left corner of the screen, press - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 86
, use the arrow keys to select File > Save changes and exit. Then follow the instructions on the screen. Your preferences go into effect when the computer restarts. NOTE: Your password settings and security settings are not changed when you restore the factory settings. 76 Chapter 5 Computer Setup - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 87
for the processor, cache and memory size, system ROM, video revision, and keyboard controller version. Replace the configuration settings in Computer Setup with the original factory settings. (Password settings and security settings are not changed when you restore the factory settings.) Cancel any - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 88
Passwords System IDs Disk Sanitizer To do this Enter, change, or delete a setup password. Enter, change, or delete a power-on password. ● Enable/disable stringent security. ● Enable/disable the password requirement on computer restart. ● Enable/disable DriveLock on any computer hard drive. ● Change - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 89
legacy support allows the following: ◦ Use of a USB keyboard in Computer Setup even when a Windows operating system is not running. ◦ Startup from bootable USB devices, including a hard drive, diskette drive, or optical drive connected by a USB port to the computer. ● Enable/disable BIOS DMA data - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 90
28.49 cm 11.22 in Width 39.62 cm Height (front to rear) 3.23 to 3.58 cm Weight (equipped with optical drive, hard drive, and battery) 2.94 kg Input power 15.60 in 1.27 to 1.41 in 6.48 lbs Operating voltage Operating current Temperature Operating (not writing to optical disc) Operating - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 91
specifications Dimensions Height Width Diagonal Number of colors Contrast ratio Brightness Pixel resolution Pitch Format Configuration Backlight Character display Total power consumption Viewing angle Metric U.S. 24.4 cm 38.1 cm 43.2 cm Up to 16.8 million 200:1 (typical) 180 nits (typical - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 92
to 55°C (41°F to 131°F) *1 GB = 1 billion bytes when referring to hard drive storage capacity. Actual accessible capacity is less. Actual drive specifications may differ slightly. NOTE: Certain restrictions and exclusions apply. Contact technical support for details. 82 Chapter 6 Specifications - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 93
, 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 DVD+R, DVD+RW, DVD-R, DVDRW, DVD-RAM CD DVD - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 94
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 1.5 cm - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 95
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 - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 96
82801DB/DBM USB2 Enhanced Host Controller-24CD COM1 Conexant AC-Link Audio Intel 82801DB/DBM SMBus Controller-24C3 Data Fax Modem with SmartCP Diskette drive Parallel port System CMOS/real-time clock IRQ9* IRQ10* Microsoft ACPI-compliant system Intel USB UHCI controller-24C2 Intel 82852/82855 GM - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 97
registers Unused 87334 "Super I/O" configuration for CPU Counter/timer registers Unused Keyboard controller Port B Unused Keyboard controller Unused NMI enable/RTC Unused DMA page registers Unused Port A Unused Interrupt controller no. 2 System function (shipping configuration) Unused DMA controller - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 98
3F7 3F8 - 3FF CF8 - CFB CFC - CFF System function (shipping configuration) Entertainment audio Unused Unused Unused drive controller Parallel port (LPT1/default) Unused FM synthesizer-OPL3 Unused VGA Reserved (parallel port/no EPP support) VGA ExpressCard controller in CPU Unused Internal modem - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 99
MB 4 GB 64 KB Memory address 00000000-0009FFFF 000A0000-000BFFFF 000C0000-000CBFFF 000C8000-000E7FFF 000E8000-000FFFFF 00100000-00FFFFFF 04800000-07FFFFFF 04800000-07FFFFFF 08000000-080FFFFF 08200000-FFFEFFFF FFFF0000-FFFFFFFF System function Base memory Video memory Video BIOS Unused System BIOS - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 100
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 456615-001. 90 Chapter 7 Screw listing - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 101
Phillips PM2.0×5.0 captive screw Color Black Quantity 4 Length 5.0 mm Thread 2.0 mm Head diameter 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 - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 102
Phillips PM2.5×13.0 captive screw Color Silver Quantity 1 Length 13.0 mm Thread 2.5 mm Head diameter 5.0 mm Where used: One captive screw that secures the hard drive to the computer (screw is secured to the hard drive bracket) 92 Chapter 7 Screw listing - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 103
Phillips PM3.0×4.0 screw Color Silver Quantity 4 Length 4.0 mm Thread 3.0 mm Head diameter 5.0 mm Where used: 4 screws that secure the hard drive bracket to the hard drive Phillips PM3.0×4.0 screw 93 - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 104
Phillips PM2.5×4.0 screw Color Black Quantity 4 Length 4.0 mm Thread 2.5 mm Head diameter 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 94 Chapter 7 Screw listing - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 105
Torx T8M2.5×7.0 screw Color Black Quantity 23 Length 7.0 mm Thread 2.5 mm Head diameter 5.0 mm Where used: (1) One screw that secures the optical drive to the computer (2) Two screws that secure the keyboard to the computer (3) Three screws that secure the switch cover to the computer Torx - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 106
Where used: 4 screws that secure the display assembly to the computer Where used: 10 screws that secure the top cover to the base enclosure Where used: 3 screws that secure the top cover to the base enclosure 96 Chapter 7 Screw listing - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 107
Phillips PM2.0×4.0 screw Color Silver Quantity 14 Length 4.0 mm Thread 2.0 mm Head diameter 4.5 mm Where used: 2 screws that secure the optical drive bracket to the optical drive Phillips PM2.0×4.0 screw 97 - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 108
Where used: 8 screws that secure the display hinges to the display assembly Where used: 2 screws that secure the TouchPad Bracket and TouchPad button board to the top cover Where used: 2 screws that secure the Bluetooth module to the base enclosure 98 Chapter 7 Screw listing - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 109
Torx T8M2.5×9.0 screw Color Black Quantity 2 Length 9.0 mm Thread 2.5 mm Head diameter 5.0 mm Where used: 2 screws that secure the switch cover to the computer Torx T8M2.5×9.0 screw 99 - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 110
Torx T8M2.5×3.0 broad-head screw Color Black Quantity 3 Length 3.0 mm Thread 2.5 mm Head diameter 8.0 mm Where used: 3 screws that secure the switch cover to the computer 100 Chapter 7 Screw listing - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 111
Torx T8M2.5×4.0 screw Color Black Quantity 7 Length 4.0 mm Thread 2.5 mm Head diameter 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 101 - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 112
Where used: 4 screws that secure the battery connector board to the base enclosure 102 Chapter 7 Screw listing - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 113
Torx T8M2.5×6.0 screw Color Black Quantity 16 Length 6.0 mm Thread 2.5 mm Heat width 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 Torx T8M2.5×6.0 screw 103 - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 114
Where used: (1) One screw that secures the system board to the base enclosure (2) Three screws that secure the battery connector board to the base enclosure 104 Chapter 7 Screw listing - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 115
Phillips PM2.0×2.0 broad-head screw Color Black Quantity 3 Length 2.0 mm Thread 2.0 mm Head diameter 6.0 mm Where used: 3 screws that secure the top cover to the base enclosure Phillips PM2.0×2.0 broad-head screw 105 - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 116
Phillips PM2.0×6.0 screw Color Black Quantity 1 Length 6.0 mm Thread 2.0 mm Head diameter 4.5 mm Where used: One screw that secures the system board to the base enclosure 106 Chapter 7 Screw listing - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 117
Phillips PM2.5×7.0 screw Color Black Quantity 1 Length 7.0 mm Thread 2.5 mm Head diameter 5.0 mm Where used: One screw that secures the fan to the base enclosure Phillips PM2.5×7.0 screw 107 - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 118
Phillips PM2.5×7.0 captive screw Color Silver Quantity 1 Length 7.0 mm Thread 2.5 mm Head diameter 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) 108 Chapter 7 Screw listing - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 119
Phillips PM2.5×10.0 captive screw Color Silver Quantity 6 Length 10.0 mm Thread 2.5 mm Head diameter 5.0 mm Where used: 6 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 109 - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 120
factory settings in case of system instability or failure. Note the following guidelines before creating recovery discs: ● Use any of the following types of discs: CD-R, DVD+R, DVD+R DL, DVD-R, or DVD-R DL (purchased separately). The discs you use will depend on the type of optical drive installed - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 121
> Paste. NOTE: Before you can perform backup and recovery procedures, the computer must be connected to external power. NOTE: Drivers, utilities, and applications installed by HP can be copied to a CD or to a DVD using HP Backup & Recovery Manager. Backing up your information in Windows Vista 111 - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 122
the recovery partition on the hard drive, to an optional external hard drive, or to optical discs (CDs or DVDs). screen instructions. Backing up the entire hard drive When you perform a complete backup of the hard drive, you are saving the full factory image, including the Windows® operating system - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 123
at specific events, such as at system restart or when you dock to an optional docking station (select models only). To schedule backups: 1. Select Start > All Programs > HP Backup & Recovery > HP Backup Scheduler. 2. Follow the on-screen instructions. Backing up your information in Windows Vista 113 - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 124
. 2. Insert the first recovery disc into the optical drive and restart the computer. 3. Follow the on-screen instructions. Performing a recovery from the hard drive There are 2 ways to initiate a recovery from the hard drive: ● From within Windows ● From the recovery partition 114 Chapter 8 Backup - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 125
the hard drive recovery partition, follow these steps: 1. Back up all personal files. 2. Restart the computer, and then press f11 before the Windows operating system loads. 3. Click a recovery option, and then click Next. 4. Follow the on-screen instructions. Performing a recovery in Windows Vista - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 126
factory settings in case of system instability or failure. Note the following guidelines before creating recovery discs: ● Use any of the following types of discs: CD-R, DVD+R, DVD+R DL, DVD-R, or DVD-R DL (purchased separately). The discs you use will depend on the type of optical drive installed - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 127
> Paste. NOTE: Before you can perform backup and recovery procedures, the computer must be connected to external power. NOTE: Drivers, utilities, and applications installed by HP can be copied to a CD or to a DVD using HP Backup and Recovery Manager. Backing up your information in Windows XP 117 - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 128
the recovery partition on the hard drive, to an optional external hard drive, or to optical discs (CDs or DVDs). screen instructions. Backing up the entire hard drive When you perform a complete backup of the hard drive, you are saving the full factory image, including the Windows® operating system - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 129
or at specific events, such as at system restart or when you dock to an optional docking station (select models only). To schedule backups: 1. Select Start > All Programs > HP Backup & Recovery > HP Backup Scheduler. 2. Follow the on-screen instructions. Backing up your information in Windows XP 119 - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 130
. 2. Insert the first recovery disc into the optical drive and restart the computer. 3. Follow the on-screen instructions. Performing a recovery from the hard drive There are 2 ways to initiate a recovery from the hard drive: ● From within Windows ● From the recovery partition 120 Chapter 8 Backup - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 131
these steps: 1. Back up all personal files. 2. Select Start > All Programs > HP Backup & Recovery > HP Backup and Recovery Manager. 3. Click Next. 4. Click Recover important files or the entire system, and then click Next. 5. Follow the on-screen instructions. Performing a recovery in Windows XP 121 - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 132
To initiate a recovery from the hard drive recovery partition, follow these steps: 1. Back up all personal files. 2. Restart the computer, and then press f11 before the Windows operating system loads. 3. Click a recovery option, and then click Next. 4. Follow the on-screen instructions. 122 Chapter - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 133
9 Connector pin assignments Audio-out (headphone) Pin Signal 1 Audio out, left channel 2 Audio out, right channel 3 Ground Audio-in (microphone) Pin Signal 1 Audio signal in 2 Audio signal in 3 Ground Audio-out (headphone) 123 - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 134
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 124 Chapter 9 - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 135
RJ-11 (modem) Pin 1 2 3 4 5 6 RJ-45 (network) Signal Unused Tip Ring Unused Unused Unused Pin Signal 1 Transmit + 2 Transmit - 3 Receive + 4 Unused 5 Unused 6 Receive - 7 Unused 8 Unused RJ-11 (modem) 125 - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 136
Universal Serial Bus Pin Signal 1 +5 VDC 2 Data - 3 Data + 4 Ground 126 Chapter 9 Connector pin assignments - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 137
responsible for evaluation in the country or region where the power cord set will be used. ● The power cord sets must have a minimum current capacity of 10 amps and a nominal voltage rating of 125 or 250 V AC, as required by the power system of each country or region. ● The appliance coupler must - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 138
of the agency responsible for evaluation in the country or region where it will be used. 5. The flexible cord must be Type VCTF, 3-conductor, 0.75-mm² conductor size. Power cord set fittings (appliance coupler and wall plug) must bear the certification mark of the agency responsible for evaluation - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 139
(EIA) Web site at http://www.eiae.org. This section provides disassembly instructions for the display assembly. The display assembly must be disassembled to gain access to the backlight (1) and the liquid crystal display (LCD) panel (2). NOTE: The procedures provided in this appendix are general - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 140
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 - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 141
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 - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 142
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. 132 Chapter - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 143
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 - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 144
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 - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 145
76 restoring factory settings 76 Security menu 78 System Configuration menu 79 using 76 computer specifications 80 connectors power 9 service considerations 28 creating recovery points 113, 119 D Diagnostics menu 78 Disk Sanitizer 78 diskette drive precautions 28 product description 2 spare part - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 146
7 Windows logo 7 L language, changing in Computer Setup 79 left-side components 9 legacy support, Universal Serial Bus (USB) 75, 79 light components 6 lights battery 9 optical drive 8 power 7 wireless 6 Logo Kit, spare part number 21, 26 M mass storage devices, spare part numbers 20 memory check - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 147
2 display panel 1 Ethernet 3 external media cards 3 graphics 1 hard drives 2 keyboard 3 memory module 2 modem module 3 operating system 4 optical drives 2 pointing devices 3 ports 3 power requirements 4 processors 1 product name 1 security 4 serviceability 4 wireless 3 product name 1 R recovery - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 148
considerations 27 serviceability, product description 4 speaker location 7 removal 49 spare part number 13, 26, 49 specifications computer 80 display 81 DVD/CD-RW Combo Drive 84 DVD±RW and CD-RW Combo Drive 83 hard drive 82 I/O addresses 87 interrupts 86 memory map 89 optical drive 83, 84 system DMA - Compaq 6820s | HP Compaq 6820s Notebook PC - Maintenance and Service Guide - Page 149
HP Compaq 6820s Notebook PC
Maintenance and Service Guide