HP 6720s HP Compaq 6720s Notebook PC - Maintenance and Service Guide
HP 6720s - Compaq Business Notebook Manual
UPC - 883585979370
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- HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 1
HP Compaq 6720s Notebook PC Maintenance and Service Guide - HP 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 - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 3
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 - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 4
iv Safety warning notice - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 5
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 31 Plastic parts 31 Cables and connectors 32 Drive handling 32 Grounding guidelines 33 - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 6
Unknown user password 36 Component replacement procedures 37 Serial number ...37 Computer feet ...38 Battery ...39 Hard drive ...40 WLAN module ...42 Memory module ...45 Optical drive ...46 Switch cover ...47 Keyboard ...50 Speaker ...53 Display lid switch module 54 Display assembly ...55 Top - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 7
from the hard drive 122 Initiating a 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 - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 8
Initiating 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 - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 9
HP Compaq 6720s Notebook PC √ √ Intel® Core™ 2 Duo processors ● T9300 2.50-GHz processor, 6-MB L2 cache, √ 800-MHz front side bus (FSB) ● T8300 2.40-GHz processor, 3-MB L2 cache, √ 800-MHz FSB ● T8100 2.10 , 2-MB L2 cache, √ 800-MHz FSB ● T5470 1.60-GHz processor, 2-MB L2 cache, √ 800 - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 10
shared video memory (dynamically allocated) All display assemblies include 2 wireless local area √ √ network (WLAN) antennae ● 15.4-inch WXGA BrightView √ √ ● 15.4-inch WXGA √ √ 2 customer-accessible/upgradable memory module √ √ slots Supports dual-channel memory √ √ Supports up - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 11
● 512-MB total system memory (512 × 1) Supports 9.5-mm, 2.5-inch hard drives √ √ Customer-accessible √ √ Serial ATA √ √ Supports the following drives: ● 160-GB, 5400-rpm ● 120-GB, 5400-rpm ● 80-GB, 5400-rpm √ √ HP 3D DriveGuard √ √ Fixed (removal of 1 screw required) √ √ Customer - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 12
area network (PAN) options by way of Bluetooth® module: Support supporting 1600 × 1200 √ √ external resolution at 75-GHz (hot plug/unplug with auto-detect) 2-pin AC power √ √ Keyboard/pointing 11.97-inch keyboard with embedded numeric √ √ devices keypad TouchPad only, with 2 TouchPad - HP 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 - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 14
button on an external mouse. (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 - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 15
wireless local area network (WLAN) device, the HP Broadband Wireless Module 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 - HP 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 - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 17
-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 following - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 18
light (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 - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 19
(7) RJ-45 (network) jack (8) USB ports (3) Function ● Amber: A battery is charging. ● Blue: A battery is close to full charge capacity. ● Blinking amber: A battery that is the only available power source has reached a low battery level. When the battery reaches a critical battery level, the - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 20
Item Component (1) Battery bay (2) Battery release latches (2) (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 - HP 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 - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 22
Computer major components 14 Chapter 3 Illustrated parts catalog - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 23
cables) Display hinges (includes left and right hinges) Display inverter (2) Switch cover (includes button board and cable) (3) Keyboards For use For use in Slovenia For use in South Korea For use in Spain Spare part number 456802-001 456801-001 456807-001 456808-001 456806-001 456618-001 - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 24
Plastics Kit on page 21 for more Plastics Kit spare part information): 456614-001 ExpressCard slot bezel WLAN module compartment cover Memory module compartment cover Hard drive bay cover TouchPad components TouchPad bracket (included in the TouchPad Miscellaneous Kit, which also includes the - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 25
800-MHz FSB) ● T8100 2.10-GHz (3-MB L2 cache, 800 GHz (2-MB L2 cache, 800-MHz FSB) ● T5470 1.60-GHz (2-MB L2 cache, 800-MHz 001 462345-001 Intel Pentium Dual-Core processor: ● T2310 1.46- battery 449137-001 Modem module 441074-001 NOTE: The modem module spare part Hong Kong, India, Indonesia, - HP 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, -001 Republic, Ecuador, El Salvador, Guam, Guatemala, Haiti, Honduras, Hong Kong, India, Indonesia, Malaysia, Mexico, Panama, Paraguay, Peru, Saudi Arabia, Taiwan, the United - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 27
use in Japan 441090-291 Intel 802.11b/g WLAN module for use 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, 5400-rpm 457014-001 120-GB, 5400-rpm 457013-001 80-GB - HP 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 - HP 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 - HP 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 - HP 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 457013-001 - HP 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 Kit ● Phillips PM3.0×4.0 screw ● Phillips PM2.5×12.0 captive screw ● Phillips PM2.5×10.0 captive screw ● Phillips PM2.5×7.0 captive screw ● Phillips PM2.5×7.0 screw ● Phillips - HP 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 - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 34
, the Dominican Republic, Ecuador, El Salvador, Guam, Guatemala, Haiti, Honduras, Hong Kong, India, Indonesia, Malaysia, Mexico, Panama, Paraguay, Peru, Saudi Arabia, Taiwan, the United States, , Eritrea, Estonia, Ethiopia, Fiji, Finland, France, French Guiana, 26 Chapter 3 Illustrated parts catalog - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 35
Salvador, Guam, Guatemala, Haiti, Honduras, Hong Kong, India, Indonesia, Malaysia, Mexico, Panama, Paraguay, Peru, part number information. 454598-001 Intel Core 2 Duo T5450 1.66-GHz processor (2-MB L2 cache, 667-MHz FSB, includes replacement thermal material) 456575-001 Intel Core 2 Duo T5470 - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 36
spare part information) 456600-001 TouchPad board (includes cable) 456601-001 TouchPad button board (includes cable) 456605-001 Heat sink (includes replacement thermal material) 456607-001 ExpressCard assembly 456608-001 System board for use only with computer models equipped with Intel Core 2 Duo - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 37
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 material) 459463-001 Intel Core 2 Duo T7250 2.00-GHz processor (2-MB L2 cache, 800-MHz FSB, includes replacement thermal material) Sequential part number - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 38
1.46-GHz processor (1-MB L2 cache, 533-MHz FSB, includes replacement thermal material) 463048-001 Intel Core 2 Duo T8100 2.10-GHz processor (3-MB L2 cache, 800-MHz FSB, includes replacement thermal material) 463049-001 Intel Core 2 Duo T8300 2.40-GHz processor (3-MB L2 cache, 800-MHz FSB, includes - HP 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 - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 40
parts being removed or replaced. Handle flex cables with extreme care; these cables tear easily. Drive handling CAUTION: Drives are drives from any height onto any surface. After removing a hard drive, an optical drive, or a diskette drive, place it in a static-proof bag. Avoid exposing a hard drive - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 41
Networks built into many integrated circuits provide some protection, but in many cases, ESD contains enough power tube Removing DIPS from vinyl tray Removing DIPS from Styrofoam Removing bubble pack from PCB Packing PCBs in foam-lined box Typical electrostatic voltage levels Relative humidity 10% - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 42
parts in their containers until the parts arrive at static-free workstations. ● Place items on a grounded surface before removing items from their containers. ● Always be properly grounded when touching a component or assembly. ● Store reusable ESD-sensitive parts service , parts, and - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 43
system. Wrist straps are flexible straps with a minimum of one megohm ±10% resistance in the ground cords. To provide proper ground, wear a strap -dissipative tables or floor mats with hard ties to the ground ● Field service kits ● Static awareness labels ● V Preliminary replacement requirements 35 - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 44
page 39). 5. Remove the real-time clock (RTC) battery (see RTC battery on page 77). 6. Wait approximately 5 minutes. 7. Replace the RTC battery and reassemble the computer. 8. Connect AC power to the computer. Do not reinsert any batteries at this time. 9. Turn on the computer. All passwords and all - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 45
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 - HP 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 - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 47
cell, 55-Wh Li-ion battery 6-cell, 47-Wh Li-ion battery Spare part number 456865-001 456864-001 Before disassembling the computer, follow these power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer. Remove the battery: - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 48
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 hard drive: 1. Position the computer with the front - HP 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 - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 50
WLAN module Description Spare part number Intel 802.11a/b/g/n 448674-001 El Salvador, Guam, Guatemala, Haiti, Honduras, Hong Kong, India, Indonesia, Malaysia, Mexico, Panama, Paraguay, Peru, Saudi Arabia, Taiwan, , Poland, Portugal, Qatar, Romania, 42 Chapter 4 Removal and replacement procedures - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 51
Spare part number Guyana, Haiti, Honduras, Hong Kong, Hungary, Iceland, India, Indonesia, Ireland, Israel, Italy, the Ivory Coast, 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 - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 52
swing it to left, and remove the cover. The WLAN module compartment cover is included in the Plastics Kit, spare part number 456614-001. 4. Disconnect The edge of the module opposite the slot rises away from the computer.) 6. Remove the WLAN module (3) by pulling the module away from the slot at an - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 53
DDR2) Spare part number 417506-001 414046-001 414045-001 Before removing the memory module, follow 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 memory - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 54
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: 1. Position the computer with the right - HP 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 - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 56
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: 1. Turn the computer upside down - HP 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 - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 58
Kingdom 456624-B31 The United States Spare part number 456624-091 456624-131 456624-251 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 - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 59
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 replacement procedures 51 - HP 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 - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 61
Spare part number 456593-001 Before removing the speaker 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 - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 62
the computer. 3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 39). 5. Remove the keyboard (see Keyboard on page 50). 6. Remove the switch cover (see Switch - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 63
with BrightView 15.4-inch, WXGA Spare part number 456802-001 456801-001 Before removing the display assembly, follow these steps: 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 - HP 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 - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 65
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 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 - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 66
(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 replacement procedures - HP 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 - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 68
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 Tilt the top cover (3) back until the TouchPad cable is accessible. 60 Chapter 4 Removal and replacement procedures - HP 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 - HP 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 - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 71
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 replacement procedures 63 - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 72
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 - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 73
system board spare part kits include replacement thermal material. Description For use only with computer models equipped with Intel Core 2 Duo processors For use only with computer models equipped with Intel Celeron M processors Spare part number 456608-001 456609-001 Before removing the system - HP 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. - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 75
3. Remove the following screws: (1) One Phillips PM2.0×6.0 screw (2) Two Torx T8M2.0×4.0 screws (3) One Torx T8M2.5×4.0 screw 4. 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 - HP 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 - HP 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 - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 78
3. Remove the fan (3) from the base enclosure. Reverse this procedure to install the fan. NOTE: To conditions are affected by high external temperatures, system power consumption, power management/battery conservation configurations, battery fast charging, and software requirements. Exhaust air is - HP 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 - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 80
be thoroughly cleaned from the surfaces of the heat sink (1) and (2), the processor (3), and graphics system component (4) each time the heat sink is removed. Thermal material is included with all heat sink and processor spare part kits. Reverse this procedure to install the heat sink. 72 Chapter - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 81
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 following components: a. Hard drive (see Hard drive on page 40) b. Optical drive (see Optical drive on page 46) Component - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 82
c. Keyboard (see Keyboard on page on page 59) i. System board (see System board on page 65) Remove the processor: 1. Turn the system board upside down, with the USB connectors hear a click. 3. Lift the processor (2) straight up and remove it. NOTE: When you install the processor, the gold triangle - HP 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 - HP 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 - HP 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 - HP 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 - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 87
board on page 65) Remove the ExpressCard assembly: 1. Turn the system board upside down, with the USB connectors toward you. 2. Remove the two Phillips PM2.0×8.0 side up, with the USB connectors toward you. 4. Remove the ExpressCard assembly from the system board. Reverse this procedure to - HP 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 - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 89
in the lower-left corner of the screen. Because Computer Setup is not Windows-based, it does not support the TouchPad. Navigation and selection are by keystroke: follow the instructions on the screen. Your preferences go into effect when the computer restarts. NOTE: Your password settings and - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 90
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 security - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 91
DriveLock on any computer hard drive. ● Change a DriveLock user password or master password. NOTE: DriveLock settings are accessible only when you enter Computer Setup by turning on (not restarting) the computer. Enable/disable support for smart card and Java™ Card power-on authentication. NOTE - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 92
power by turning off the LAN when not in use. ● Enable/disable SATA Native Mode. ● Enable/disable Dual Core CPU. ● Enable/disable Secondary Battery Fast Charge. ● Choose Bit-shift or LBA assisted HDD Translation Mode. ● Enable/disable Windows direct application launcher. ● Enable/disable HP Lockout - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 93
. ● Enable/disable the 1394 port. ● Enable/disable the cardbus slot. ● Enable/disable the ExpressCard slot. ● Enable/disable the infrared port. ● Enable/disable the optical disk drive. ● Enable/disable the network controller. Computer Setup menus 85 - HP 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 - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 95
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 consumption Viewing angle Metric U.S. 20.7 cm 33.1 cm 39 - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 96
Hard drive specifications 160-GB* 120-GB* 80-GB* Dimensions Height Width Weight Interface type Transfer rate Security Seek times (typical read, including setting) Single track Average 9.5 mm 70 mm 101 g SATA 100 MB/sec ATA security 3 ms - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 97
MIXED MODE CD, CD-I, CD-I Bridge (Photo-CD, Video CD), Multisession CD (Photo-CD, CD-EXTRA, Portfolio, CD-R, CD-RW), CD-R, CD-RW, DVD-ROM (DVD-5, DVD-9, DVD-10, DVD-18), DVD-R, DVD-RW, DVD+R, DVD+RW, DVD-RAM 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 - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 98
CD-TEXT, CD-ROM, CD-ROM XA, MIXED MODE CD, CD-I, CD-I Bridge (Photo-CD, Video CD), Multisession CD (Photo-CD, CD-EXTRA, Portfolio, CD-R, CD-RW), CD-R, CD-RW, DVD-ROM (DVD-5, DVD-9, DVD-10, DVD-18), DVD-R, DVD-RW, DVD+R, DVD+RW, DVD-RAM CD-R and CD-RW 1.5 cm (0.59 in) 12 cm (4.72 in) 8 cm (3.15 in - HP 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, - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 100
specifications Hardware IRQ System function IRQ0 IRQ1 System timer Standard 101-/102-Key or Microsoft® Natural Keyboard IRQ2 Cascaded IRQ3 Intel 82801DB/DBM USB2 Enhanced Host Controller-24CD IRQ4 COM1 IRQ5* Conexant AC IRQ12 Synaptics PS/2 TouchPad IRQ13 Numeric data processor - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 101
I/O" configuration for CPU Counter/timer registers Unused Keyboard controller Port B Unused Keyboard controller Unused NMI enable reset Unused Unused Secondary fixed disk controller Unused Primary fixed disk controller Unused JoyStick (decoded in ESS1688) Unused System I/O address specifications - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 102
FM synthesizer-OPL3 Unused VGA Reserved (parallel port/no EPP support) VGA ExpressCard controller in CPU Unused Internal modem "A" diskette controller Serial port (COM1/default) PCI configuration index register (PCIDIVO-1) PCI configuration data register (PCIDIVO-1) 94 Chapter 6 Specifications - HP 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 - HP 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 - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 105
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- by a C-clip) (3) One captive screw that secures the memory module compartment cover to the computer (screw is captured on the cover by a - HP 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 - HP 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 - HP 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 - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 109
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 - HP 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 - HP 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 - HP 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 - HP 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 - HP 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 - HP 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 - HP 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 - HP 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 - HP 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 - HP 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 - HP 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 - HP 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 - HP 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 - HP 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 - HP 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 - HP 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 - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 126
more information than CDs, DVDs and DVDs with double-layer (DL) support reduce the number of discs required. NOTE: Read-write discs, such as CD-RW, DVD+RW, and DVD-RW, are not compatible with the HP Backup & Recovery Manager software. ● The computer must be connected to AC power during the process - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 127
screen, press fn+prt sc. c. Open a word-processing document, and then select Edit > 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 - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 128
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 & Recovery > Backup & Recovery - HP 6720s | HP Compaq 6720s 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 Vista - HP 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 - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 131
recovery in Windows, follow these steps: 1. Back up all personal files. 2. Select Start > All Programs > HP Backup & Recovery > Backup & Recovery Manager. 3. Click Next. 4. Click Perform a recovery, and then click Next. 5. Follow the on-screen instructions. Initiating a recovery from the hard drive - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 132
more information than CDs, DVDs and DVDs with double-layer (DL) support reduce the number of discs required. NOTE: Read-write discs, such as CD-RW, DVD+RW, and DVD-RW, are not compatible with the HP Backup and Recovery Manager software. ● The computer must be connected to AC power during the process - HP 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 - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 134
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 & Recovery > HP Backup - HP 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 - HP 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 - HP 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 - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 138
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. 130 Chapter - HP 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 - HP 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 - HP 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 - HP 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 - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 143
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 - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 144
specific HO5VV-F, 3-conductor, 1.0-mm² conductor size. Power cord set fittings (appliance coupler and wall 3-conductor, 0.75-mm² conductor size. Power cord set fittings (appliance coupler and wall VCTF, 3-conductor, 0.75-mm² conductor size. Power cord set fittings (appliance coupler and wall plug) - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 145
battery disposal. Display WARNING! The backlight contains mercury. Exercise caution when removing removing these components. When you remove these components, handle them carefully. NOTE: Materials Disposal. This HP in this appendix are general disassembly instructions. Specific details, such as screw - HP 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) of the display bezel until the bezel disengages from the display assembly. 3. Remove the display bezel (3). 138 Chapter 11 Recycling - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 147
the display panel assembly (2) from the display enclosure. 7. Turn the display panel assembly upside down. 8. Remove all screws that secure the display panel frame to the display panel. 9. Use a sharp-edged tool to cut the tape (1) that secures the sides of - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 148
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. 140 Chapter - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 149
in the display panel. 16. Turn the display panel upside down. WARNING! The backlight contains mercury. Exercise caution when removing and handling the backlight to avoid damaging this component and causing exposure to the mercury. 17. Remove the backlight frame from the display panel. Display 141 - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 150
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 - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 151
menu 84 using 81 computer specifications 86 connectors power 11 service considerations 32 creating recovery points 121, 127 D Diagnostics menu 83 Disk Sanitizer 83 diskette drive precautions 32 product description 3 spare part number 24 display assembly removal 55 spare part numbers 15, 29, 55 - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 152
support, Universal Serial Bus (USB) 80, 84 light components 7 lights battery 11 caps lock 7 optical drive 10 power 8 wireless 7 Logo Kit, spare part number 24, 28 M mass storage devices, spare part numbers 23 memory check 83 memory map specifications 95 memory module product description 2 removal - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 153
, product description 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 - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 154
serviceability, 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 - HP 6720s | HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 155
HP Compaq 6720s Notebook PC
Maintenance and Service Guide