Compaq 6720s HP Compaq 6720s Notebook PC - Maintenance and Service Guide
Compaq 6720s - Notebook PC Manual
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- Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 1
HP Compaq 6720s Notebook PC Maintenance and Service Guide - Compaq 6720s | HP Compaq 6720s 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 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 3
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. Also, do not allow the AC adapter to contact the skin or - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 4
iv Safety warning notice - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 5
number location ...13 Computer major components 14 Plastics Kit ...21 Cable Kit ...22 Mass storage devices ...23 Miscellaneous parts ...24 Sequential part number listing 25 4 Removal and replacement procedures Preliminary replacement requirements 31 Tools required ...31 Service considerations - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 6
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 ...47 Keyboard ...50 Speaker ...53 Display lid switch module 54 Display assembly ...55 Top cover ...59 - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 7
recovery in Windows 123 Initiating a recovery from the hard drive recovery partition 123 Creating recovery discs in Windows XP 124 Backing up your information in Windows XP 125 When to back up 125 Backup suggestions 125 Backing up specific files or folders 126 Backing up the entire hard drive - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 8
a recovery in Windows 129 Initiating a recovery from the hard drive recovery partition 130 9 Connector pin assignments Audio-out (headphone) ...131 Audio-in (microphone) ...131 External monitor ...132 RJ-11 (modem) ...133 RJ-45 (network) ...134 Universal Serial Bus ...134 10 Power cord set - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 9
1 Product description Category Product Name Processors Description Computer models equipped with GLE960 system board Computer models equipped with GME965 system board HP Compaq 6720s Notebook PC √ √ Intel® Core™ 2 Duo processors ● T9300 2.50-GHz processor, 6-MB L2 cache, √ 800-MHz front - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 10
Graphics Panel Memory Description Computer models equipped with GLE960 system board Computer models equipped with GME965 system board Intel upgradable memory module √ √ slots Supports dual-channel memory √ √ Supports up to 4 GB of system RAM √ √ PC2-5300, 667-MHz, DDR2 √ √ Supports - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 11
Hard drives Optical drives Diskette drive Audio Modem Description Computer models equipped with GLE960 system board Computer models equipped with GME965 system board Supports the following configurations only in Brazil: √ √ ● 2048-MB total system memory (2048 × 1) ● 2048-MB total system - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 12
) √ √ 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 √ √ Keyboard/pointing 11.97 - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 13
Premium √ √ Windows Vista Business 32 √ √ Windows XP Professional √ √ Red Flag Linux (in the People's Republic of China √ √ only) DRDVD Vista √ √ Certified: Microsoft® WHQL √ √ End-user replaceable parts: AC adapter √ √ Battery (system) √ √ Hard drive √ √ Memory module - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 14
the pointer and selects or activates items on the screen. (2) Left TouchPad button* Functions like the left 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 - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 15
, press and hold the power button for at least 5 seconds to turn off the computer. To learn more about 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 - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 16
Power light (6) Speaker Keys Function ● 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. Produces sound. Item (1) Component esc key (2) fn key (3) Windows logo key (4) Windows - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 17
(2) Audio-in (microphone) jack (3) SD/MMC Card Reader Function Produces sound when connected to 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 - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 18
(3) Security cable slot Function Reads optical discs and, on select models, also writes to optical discs. Blinking: The optical drive is being accessed. Attaches an optional security cable to the computer. NOTE: The security cable is designed to act as a deterrent, but it may not prevent the - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 19
in the computer are fully charged. If the 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 - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 20
(3) Memory module compartment (4) 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 6720s | HP Compaq 6720s 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 13 - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 22
Computer major components 14 Chapter 3 Illustrated parts catalog - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 23
and right hinges) Display inverter (2) Switch cover (includes button board and cable) (3) Keyboards For use in Belgium For use in in Slovenia For use in South Korea For use in Spain Spare part number 456802-001 456801-001 456807-001 456808-001 456806-001 456618 Computer major components 15 - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 24
part information): 456614-001 ExpressCard slot bezel WLAN module compartment cover Memory module compartment cover Hard drive bay cover TouchPad 001 ExpressCard assembly 456607-001 System boards (include replacement thermal material) For use only with computer models equipped with Intel - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 25
Cable Kit on page 22 for more Cable Kit spare part number information. Base enclosure (includes rubber feet) 456804-001 Rubber Kit (not illustrated, contains 6 computer feet and 8 display bezel screw covers) 456616-001 Batteries 6-cell, 47-Wh Li-ion battery 456864-001 6-cell, 55-Wh Li-ion - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 26
Item Description Spare part number Hungary, Iceland, Ireland, Israel, Italy, Latvia, Lebanon, Liechtenstein, Lithuania, Luxembourg, Malta, Monaco, the Netherlands, Norway, Oman, , the People's Republic of China, and South 441082-003 and Korea 448674-003 18 Chapter 3 Illustrated parts catalog - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 27
● For use in Japan ● For use in South Korea Spare part number 441082-291 and 448674-291 456576-AD1 Broadcom 802.11b/g in Thailand 409280-004 Memory modules (PC2-5300, 667-MHz, DDR2) 2048-MB 417506-001 1024-MB 414046-001 512-MB 414045-001 Hard drives (include hard drive bracket) 160-GB - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 28
Item Description DVD/CD-RW Combo Drive Cable Kit (not illustrated; see Cable Kit on page 22 for more Cable Kit spare part number information) Spare part number 456797-001 456594-001 20 Chapter 3 Illustrated parts catalog - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 29
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 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 30
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 456594-001 22 Chapter 3 Illustrated parts catalog - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 31
±RW and CD-RW Super Multi Double-Layer Combo Drive with LightScribe DVD±RW and CD-RW Super Multi Double-Layer Combo Drive DVD/CD-RW Combo Drive (2) Hard drives (include bracket) 160-GB, 5400-rpm 120-GB, 5400-rpm 80-GB, 5400-rpm Spare part number 456799-001 456798-001 456797-001 457014-001 457013 - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 32
Miscellaneous parts Description 65-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 24 Chapter 3 Illustrated parts catalog Spare part number 417220-001 456617-001 325814-001 359118-001 246959-011 246959-201 - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 33
module (PC2-5300, 667-MHz, DDR2) 417220-001 65-W AC adapter 417506-001 2048-MB memory module (PC2-5300, 667-MHz, DDR2) 431312-001 Fan 441074-001 Modem module (includes modem module cable) NOTE: The modem module spare part kit does not include a modem module cable. The modem module cable is included - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 34
Spare part Description number Croatia, Cyprus, the Czech Republic, Denmark, Djibouti, Dominica, the Dominican Republic, East Timor, Ecuador, Egypt Ecuador, Egypt, El Salvador, Equitorial Guinea, Eritrea, Estonia, Ethiopia, Fiji, Finland, France, French Guiana, 26 Chapter 3 Illustrated parts catalog - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 35
T7700 2.40-GHz processor (4-MB L2 cache, 800-MHz FSB, includes replacement thermal material) 448674-001 Intel 802.11a/b/g WLAN module for use in -001 RTC battery 450066-001 Bluetooth module for use in Japan and Asia Pacific countries and regions NOTE: The Bluetooth module spare part kits do not - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 36
with Intel Celeron M processors (includes replacement thermal material) 456614-001 Plastics Kit (see Plastics Kit on page 21 for more Plastics Kit spare part information) 456615-001 Screw Kit 456616-001 Rubber Kit (contains 6 computer feet and 8 display bezel screw covers) 456617-001 Logo Kit 456618 - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 37
-Wh Li-ion battery 457012-001 80-GB, 5400-rpm hard drive (includes bracket) 457013-001 120-GB, 5400-rpm hard drive (includes bracket) 457014-001 160-GB, 5400-rpm hard drive (includes bracket) 459462-001 Intel Celeron M 530 1.73-GHz processor (1-MB L2 cache, 533-MHz FSB, includes replacement thermal - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 38
Spare part Description number 459464-001 Intel Core 2 Duo T5550 1.83-GHz processor (2-MB L2 cache, 800-MHz FSB, includes replacement thermal material) 459465-001 Intel Core 2 Duo T7800 2.60-GHz processor (4-MB L2 cache, 800-MHz FSB, includes replacement thermal material) 462345-001 Intel Core 2 Duo - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 39
) 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 31 - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 40
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 discharged of static - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 41
but in many cases, ESD contains enough power to alter device parameters or melt silicon junctions expectancy. CAUTION: To prevent damage to the computer when you are removing or installing internal components 3,000 V 400 V 400 V 2,000 V 3,500 V 7,000 V 5,000 V Preliminary replacement requirements 33 - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 42
parts charges. Workstation guidelines Follow these grounding workstation guidelines: ● Cover the workstation with approved static-shielding material. ● Use a wrist strap connected to a properly grounded work surface and use properly grounded tools and equipment. ● Use conductive field service parts, - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 43
or soldering aids ● Nonconductive foam ● Conductive tabletop workstations with ground cords of one megohm resistance ● Static-dissipative tables or floor mats with hard ties to the ground ● Field service kits ● Static awareness labels ● Material-handling packages ● Nonconductive plastic bags - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 44
shut it down through the operating system. 2. Disconnect all external devices connected to the computer. 3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 39 - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 45
must be removed, replaced, or loosened when servicing the computer. Make special note of each screw size and location during removal and replacement. Serial number Report the computer serial number to HP when requesting information or ordering spare parts. The serial number is located on the bottom - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 46
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. 38 Chapter 4 Removal and replacement procedures - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 47
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 down on - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 48
power cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 39). Remove the hard drive: 1. Position the computer with the front toward you. 2. Loosen the two Phillips PM2.0×5.0 captive screws (1) that secure the hard drive bay cover - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 49
6. Remove the hard drive (4) from the hard drive bay. 7. If it is necessary to replace the hard drive bracket, remove the two Phillips PM3.0×4.0 hard drive bracket screws (1) from each side of the hard drive. 8. Lift the bracket (2) straight up to remove it from the hard drive. Reverse this - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 50
WLAN module Description Spare part number Intel 802.11a/b/g/n WLAN modules: ● For use in Antigua and Barbuda, Argentina, Aruba, the Bahamas Luxembourg, Malta, Monaco, the Netherlands, Norway, Oman, the Philippines, Poland, Portugal, Qatar, Romania, 42 Chapter 4 Removal and replacement procedures - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 51
part system. 2. Disconnect all external devices connected to the computer. 3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 39). Component replacement - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 52
cover to the computer. 3. Lift the right side of the WLAN module compartment cover (2), swing it to left, and remove the cover. The WLAN module compartment cover is included in the Plastics Kit, spare part to the computer. (The edge of the module opposite the slot rises away from the computer.) 6. - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 53
the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 39). Remove the memory module: 1. Loosen the Phillips PM2.0×5.0 captive screw (1) that secures the memory module compartment cover to - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 54
system. 2. Disconnect all external devices connected to the computer. 3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 39). Remove the optical drive - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 55
the optical drive bracket to the optical drive. 7. Remove the optical drive bracket (2). Reverse this procedure to reassemble and install an optical drive. Switch cover Description Switch cover (includes button board and cable) Spare part number 456800-001 Component replacement procedures 47 - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 56
system. 2. Disconnect all external devices connected to the computer. 3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 39). Remove the switch cover - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 57
6. Remove the switch cover (2) by lifting it straight up. Reverse this procedure to install the switch cover. Component replacement procedures 49 - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 58
power cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 39). 5. Remove the switch cover (see Switch cover on page 47). Remove the keyboard: 1. Position the computer with the front toward you. 50 Chapter 4 Removal and replacement - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 59
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. 5. Lift the rear edge of the keyboard (1) and slide it back until it rests on the display assembly (2). Component - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 60
6. Release the zero insertion force (ZIF) connector (1) to which the keyboard cable is attached, and disconnect the keyboard cable (2) from the system board. 7. Remove the keyboard. Reverse this procedure to install the keyboard. 52 Chapter 4 Removal and replacement procedures - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 61
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 39). 5. Remove the keyboard (see Keyboard on page 50). 6. Remove the switch cover (see Switch cover on page - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 62
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 39). 5. Remove the keyboard (see Keyboard on page 50). 6. Remove the switch cover (see Switch cover on page - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 63
shut it down through the operating system. 2. Disconnect all external devices connected to the computer. 3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 39 - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 64
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 456616 - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 65
cable (3) from the display inverter. 10. Remove the display inverter. The display inverter is available using spare part number 456618-001. 11. 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 - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 66
.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 456806-001. Reverse this procedure to reassemble and install the display assembly. 58 Chapter 4 Removal and - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 67
the power cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 39). 5. Remove the following components: a. Hard drive (see Hard drive on page 40) b. Optical drive (see Optical drive on page 46) c. Keyboard (see Keyboard on - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 68
the rear edge of the top cover (1) and swing it up and forward until it rests at an angle. 8. Lift the front edge of the top cover (2) until it disengages from the base enclosure. 9. Tilt the top cover (3) back until the TouchPad cable is accessible. 60 Chapter 4 Removal and replacement procedures - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 69
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 61 - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 70
the power cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 39). 5. Remove the following components: a. Hard drive (see Hard drive on page 40) b. Optical drive (see Optical drive on page 46) c. Keyboard (see Keyboard on - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 71
4. Remove the two Phillips PM2.0×4.0 screws (4) that secure the TouchPad bracket to the computer. 5. Release the TouchPad bracket (1) by sliding it back. 6. Remove the TouchPad bracket (2) by lifting it straight up. 7. Remove the TouchPad button board (3). 8. Remove the TouchPad button board cable - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 72
the AC adapter from the computer. 4. Remove the battery (see Battery on page 39). 5. Remove the following components: a. Hard drive (see Hard drive on page 40) b. Optical drive (see Optical drive on page 46) c. Keyboard (see Keyboard on page 50) d. Switch cover (see Switch cover on page 47) 64 - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 73
computer on, and then shut it down through the operating system. 2. Disconnect all external devices connected to the computer. 3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer. Component replacement - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 74
4. Remove the battery (see Battery on page 39). 5. Remove the following components: a. Hard drive (see Hard drive on page 40) b. Optical drive (see Optical drive on page 46) c. Keyboard (see Keyboard on page 50) d. Switch cover (see Switch cover on page 47) e. Speaker (see Speaker on page 53) f. - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 75
of the base enclosure (1) until the external monitor connector (2) is clear of the opening in the base enclosure. 5. Lift the rear edge of the system board (3) until it rests at an angle. 6. Remove the system board (4) from the base enclosure by sliding it back. Component replacement procedures 67 - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 76
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 number 456805-001. Reverse the preceding procedure to install the system board. 68 Chapter 4 Removal and replacement procedures - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 77
the power cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 39). 5. Remove the following components: a. Hard drive (see Hard drive on page 40) b. Optical drive (see Optical drive on page 46) c. Keyboard (see Keyboard on - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 78
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. 70 Chapter 4 Removal and replacement procedures - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 79
the power cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 39). 5. Remove the following components: a. Hard drive (see Hard drive on page 40) b. Optical drive (see Optical drive on page 46) c. Keyboard (see Keyboard on - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 80
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 material is included with all heat sink and processor spare part kits. Reverse this procedure to install the heat sink. 72 Chapter 4 Removal and - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 81
the power cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 39). 5. Remove the following components: a. Hard drive (see Hard drive on page 40) b. Optical drive (see Optical drive on page 46) Component replacement procedures - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 82
see Keyboard on page 50) d. Switch cover (see Switch cover on page 47) e. Speaker (see Speaker on page 53) f. Display lid switch module (see Display lid switch module on page 54) g. Display assembly (see Display assembly on page 55) h. Top cover (see Top cover on page 59) i. System board (see System - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 83
the power cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 39). 5. Remove the following components: a. Hard drive (see Hard drive on page 40) b. Optical drive (see Optical drive on page 46) c. Keyboard (see Keyboard on - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 84
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. 76 Chapter 4 Removal and replacement procedures - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 85
the power cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 39). 5. Remove the following components: a. Hard drive (see Hard drive on page 40) b. Optical drive (see Optical drive on page 46) c. Keyboard (see Keyboard on - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 86
the power cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 39). 5. Remove the following components: a. Hard drive (see Hard drive on page 40) b. Optical drive (see Optical drive on page 46) c. Keyboard (see Keyboard on - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 87
h. Top cover (see Top cover on page 59) i. System board (see System board on page 65) Remove the ExpressCard assembly: 1. Turn the system board upside .0×4.0 screws (2) that secure the ExpressCard assembly to the system board. 3. Turn the system board right-side up, with the USB connectors toward - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 88
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 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 89
Exit. Then follow the instructions on the screen. Your preferences go into effect when the computer restarts. Restoring factory settings in Computer Setup To return all settings in Computer Setup to the values that were set at the factory, follow these steps: 1. Open Computer Setup by turning on or - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 90
for the computer and the batteries in the system. ● View specification information for the processor, cache and memory size, system ROM, video revision, and keyboard controller version. Replace the configuration settings in Computer Setup with the original factory settings. (Password settings and - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 91
Security 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 password requirement on computer restart. ● Enable/disable DriveLock on any computer hard drive. ● Change - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 92
disable USB legacy support. When enabled, USB legacy support allows the following: ◦ Use of a USB keyboard, mouse, and hub 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 - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 93
serial port. ● Enable/disable the parallel port. ● Enable/disable the flash media reader. ● Enable/disable the USB port. CAUTION: Disabling the USB port also disables /disable the infrared port. ● Enable/disable the optical disk drive. ● Enable/disable the network controller. Computer Setup menus 85 - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 94
6 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 - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 95
. The computer operates well within this range of temperatures. 15.4-inch, WXGA display specifications Dimensions Height Width Diagonal Number of colors Contrast ratio Brightness Pixel resolution Pitch Format Configuration Backlight Character display Total power - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 96
temperature 5°C 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. 88 Chapter - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 97
Drive specifications Applicable disc Center hole diameter Disc diameter Standard disc Mini disc Disc thickness Track pitch Access time Random Full stroke Audio 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 1.5 cm (0.59 in) 12 cm (4.72 in) 8 cm - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 98
Drive specifications Applicable disc Center hole diameter Disc diameter Standard disc Mini disc Disc thickness Track pitch Access time Random Full stroke Audio -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 (0.59 in) 12 cm (4.72 in) 8 cm (3.15 in - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 99
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, - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 100
Key or Microsoft® Natural Keyboard IRQ2 Cascaded IRQ3 Intel 82801DB/DBM USB2 Enhanced Host Controller-24CD IRQ4 COM1 IRQ5* Conexant AC-Link Audio Intel 82801DB/DBM SMBus Controller-24C3 Data Fax Modem with SmartCP IRQ6 Diskette drive IRQ7* Parallel port IRQ8 System CMOS/real-time clock - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 101
Interrupt controller no. 2 System Function (shipping configuration) Unused DMA controller no. 2 Unused Coprocessor busy clear/reset Unused Unused Secondary fixed disk controller Unused Primary fixed disk controller Unused JoyStick (decoded in ESS1688) Unused System I/O address specifications 93 - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 102
audio Unused Unused Unused Unused Unused Unused Reserved serial port Unused Infrared port Unused Unused Secondary diskette drive controller Parallel port (LPT1/default) Unused FM synthesizer-OPL3 Unused VGA Reserved (parallel port/no EPP support) VGA ExpressCard controller in CPU Unused - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 103
00FFFFFF 04800000-07FFFFFF 04800000-07FFFFFF 08000000-080FFFFF 08200000-FFFEFFFF FFFF0000-FFFFFFFF System function Base memory Video memory Video BIOS Unused System BIOS Extended memory Super extended memory Unused Video memory (direct access) Unused System BIOS System memory map specifications 95 - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 104
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. 96 Chapter 7 Screw listing - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 105
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 - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 106
Phillips PM2.5×12.0 captive screw Color Silver Quantity 1 Length 12.0 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) 98 Chapter 7 Screw listing - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 107
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 99 - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 108
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 100 Chapter 7 Screw listing - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 109
secure the modem module to the system board Torx T8M2.5×7.0 screw Color Black Quantity 17 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 Torx T8M2.5×7.0 screw 101 - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 110
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 102 Chapter 7 Screw listing - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 111
Phillips PM2.0×4.0 screw Color Silver Quantity 16 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 103 - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 112
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 104 Chapter 7 Screw listing - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 113
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 Phillips PM2.0×4.0 screw 105 - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 114
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 106 Chapter 7 Screw listing - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 115
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 Torx T8M2.5×3.0 broad-head screw 107 - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 116
Torx T8M2.5×4.0 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 speaker to the computer 108 Chapter 7 Screw listing - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 117
Where used: One screw that secures the top cover to the base enclosure Where used: One screw that secures the system board to the base enclosure Torx T8M2.5×4.0 screw 109 - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 118
Phillips PM2.0×2.0 broad-head screw Color Black Quantity 3 Length 2.0 mm Thread 2.0 mm Head diameter 7.0 mm Where used: 3 screws that secure the top cover to the display enclosure 110 Chapter 7 Screw listing - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 119
Torx T8M2.5×6.0 screw Color Black Quantity 12 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 111 - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 120
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 112 Chapter 7 Screw listing - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 121
Torx T8M2.0×4.0 screw Color Black Quantity 2 Length 4.0 mm Thread 2.0 mm Head diameter 4.5 mm Where used: 2 screws that secure the optical drive connector board to the base enclosure Torx T8M2.0×4.0 screw 113 - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 122
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 114 Chapter 7 Screw listing - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 123
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) Phillips PM2.5×7.0 captive screw 115 - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 124
Phillips PM2.5×10.0 captive screw Color Silver Quantity 4 Length 10.0 mm Thread 2.5 mm Head diameter 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) 116 Chapter 7 Screw listing - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 125
Phillips PM2.0×8.0 screw Color Black Quantity 2 Length 8.0 mm Thread 2.0 mm Head diameter 4.5 mm Where used: 2 screws that secure the ExpressCard assembly to the system board Phillips PM2.0×8.0 screw 117 - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 126
and recovery Creating recovery discs in Windows VIsta After setting up the computer for the first time, be sure to create a set of recovery discs of the full factory image. The recovery discs are used to start up (boot) the computer and recover the operating system and software to factory settings - Compaq 6720s | HP Compaq 6720s 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 & Recovery Manager. Backing up your information in Windows Vista 119 - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 128
to the recovery partition on the hard drive, to an optional external hard drive, or to optical discs (CDs or DVDs). NOTE: This process will take several minutes, depending on the file size and the speed of the computer. To back up specific files or folders: 1. Select Start > All Programs > HP Backup - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 129
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 121 - Compaq 6720s | HP Compaq 6720s 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 122 Chapter 8 Backup - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 131
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 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 132
a set of recovery discs: 1. Select Start > All Programs > HP Backup & Recovery > HP Backup and Recovery Manager. 2. Click Next. 3. Click Create factory software recovery CDs or DVDs to recover the system (Highly recommended), and then click Next. 4. Follow the on-screen instructions. 124 Chapter - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 133
> 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 125 - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 134
hard drive: 1. Select Start > All Programs > HP Backup & Recovery > HP Backup and Recovery Manager. 2. Click Next. 3. Click Back up to protect system settings and important data files, and then click Next. 4. Click Back up entire hard drive, and then click Next. 5. Follow the on-screen instructions - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 135
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 127 - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 136
. 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 128 Chapter 8 Backup - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 137
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 129 - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 138
partition 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 - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 139
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) 131 - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 140
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 132 Chapter 9 - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 141
RJ-11 (modem) Pin Signal 1 Unused 2 Tip 3 Ring 4 Unused 5 Unused 6 Unused RJ-11 (modem) 133 - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 142
RJ-45 (network) Pin Signal 1 Transmit + 2 Transmit - 3 Receive + 4 Unused 5 Unused 6 Receive - 7 Unused 8 Unused Universal Serial Bus Pin Signal 1 +5 VDC 2 Data - 3 Data + 4 Ground 134 Chapter 9 Connector pin assignments - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 143
of 125 or 250 V AC, as required by the power system of each country or region. ● The appliance coupler must meet the mechanical configuration of an EN 60 320/IEC 320 Standard Sheet C13 connector for mating with the appliance inlet on the back of the computer. Requirements for all countries and - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 144
Requirements for specific countries and regions Country/region Accredited agency Applicable note number Australia 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 - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 145
, handle them carefully. NOTE: Materials Disposal. This HP product contains mercury in the backlight in the display disassembly instructions. Specific details, such as screw sizes, quantities, and locations, and component shapes and sizes, can vary from one computer model to another. Battery - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 146
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 - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 147
4. Disconnect all display panel cables (1) from the display inverter and remove the inverter (2). 5. Remove all screws (1) that secure the display panel assembly to the display enclosure. 6. Remove the display panel assembly (2) from the display enclosure. 7. Turn the display panel assembly upside - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 148
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. 140 Chapter 11 Recycling - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 149
15. Remove the backlight cables (1) from the clip (2) in the display panel. 16. Turn the display panel upside down. WARNING! The backlight contains mercury. Exercise caution when removing and handling the backlight to avoid damaging this component and causing exposure to the mercury. 17. Remove the - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 150
18. Remove the backlight from the backlight frame. 19. Disconnect the display panel cable (1) from the LCD panel. 20. Remove the screws (2) that secure the LCD panel to the display rear panel. 21. Release the LCD panel (3) from the display rear panel. 22. Release the tape (4) that secures the LCD - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 151
Index A AC adapter, spare part number 24, 25 antenna, disconnecting 44 audio, product description 3 audio-in jack location 9 pin assignments 131 audio-out jack location 9 pin assignments 131 B backing up 119 backup files and folders 120, 126 hard drive 120, 126 modifications made to system 127 - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 152
19, 23, 29, 40 specifications 88 hard drive backup 120, 126 hard drive bay 12 hard drive bay cover illustrated 21 removal 40 hard drive bracket, removal 41 hard drive recovery 122, 128 hard drive test 83 headphone jack location 9 pin assignments 131 heat sink removal 71 spare part number 16, 28, 71 - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 153
5 power-on password 83 processor product description 1 removal 73 spare part numbers 16, 27, 29, 30, 73 product description audio 3 chipset 2 diskette drive 3 display panel 2 Ethernet 4 external media cards 4 graphics 2 hard drives 3 keyboard 4 memory module 2 modem module 3 operating system - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 154
product description 5 smart card security 83 speaker location 8 removal 53 spare part number 16, 28, 53 specifications computer 86 display 87 DVD/CD-RW Combo Drive 90 DVD±RW and CD-RW Combo Drive 89 hard drive 88 I/O addresses 93 interrupts 92 memory map 95 optical drive 89, 90 system DMA 91 startup - Compaq 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 155
HP Compaq 6720s Notebook PC
Maintenance and Service Guide