Compaq 6720s - Notebook PC Specifications Page 1

HP Compaq 6720s Notebook PCMaintenance and Service Guide

Category Description Computer modelsequipped withGLE960 systemboardComputer modelsequipped withGME965 systemboard Intel Celeron® M processors ●550 2.

System interrupt specificationsHardware IRQ System functionIRQ0 System timerIRQ1 Standard 101-/102-Key or Microsoft® Natural KeyboardIRQ2 CascadedIRQ3

System I/O address specificationsI/O address (hex) System function (shipping configuration)000 - 00F DMA controller no. 1010 - 01F Unused020 - 021 Int

I/O address (hex) System function (shipping configuration)220 - 22F Entertainment audio230 - 26D Unused26E - 26 Unused278 - 27F Unused280 - 2AB Unused

System memory map specificationsSize Memory address System function640 KB 00000000-0009FFFF Base memory128 KB 000A0000-000BFFFF Video memory48 KB 000C

7Screw listingThis section provides specification and reference information for the screws and screw locks used in thecomputer. All screws listed in t

Phillips PM2.0×5.0 captive screwColor Quantity Length Thread Head diameterBlack 4 5.0 mm 2.0 mm 5.0 mmWhere used:(1) Two captive screws that secure th

Phillips PM2.5×12.0 captive screwColor Quantity Length Thread Head diameterSilver 1 12.0 mm 2.5 mm 5.0 mmWhere used: One captive screw that secures th

Phillips PM3.0×4.0 screwColor Quantity Length Thread Head diameterSilver 4 4.0 mm 3.0 mm 5.0 mmWhere used: 4 screws that secure the hard drive bracket

Phillips PM2.5×4.0 screwColor Quantity Length Thread Head diameterBlack 4 4.0 mm 2.5 mm 5.0 mmWhere used: 2 screws that secure the WLAN module to the

Where used: 2 screws that secure the modem module to the system boardTorx T8M2.5×7.0 screwColor Quantity Length Thread Head diameterBlack 17 7.0 mm 2.

Category Description Computer modelsequipped withGLE960 systemboardComputer modelsequipped withGME965 systemboard Supports the following configuratio

Where used: 4 screws that secure the display assembly to the computerWhere used: 7 screws that secure the top cover to the base enclosureWhere used: 3

Phillips PM2.0×4.0 screwColor Quantity Length Thread Head diameterSilver 16 4.0 mm 2.0 mm 4.5 mmWhere used: 2 screws that secure the optical drive bra

Where used: 8 screws that secure the display hinges to the display assemblyWhere used: 2 screws that secure the TouchPad Bracket and TouchPad button b

Where used: 2 screws that secure the Blueotooth module to the base enclosureWhere used: 2 screws that secure the ExpressCard assembly to the system bo

Torx T8M2.5×9.0 screwColor Quantity Length Thread Head diameterBlack 2 9.0 mm 2.5 mm 5.0 mmWhere used: 2 screws that secure the switch cover to the co

Torx T8M2.5×3.0 broad-head screwColor Quantity Length Thread Head diameterBlack 3 3.0 mm 2.5 mm 8.0 mmWhere used: 3 screws that secure the switch cove

Torx T8M2.5×4.0 screwColor Quantity Length Thread Head diameterBlack 4 4.0 mm 2.5 mm 5.0 mmWhere used: 2 screws that secure the speaker to the compute

Where used: One screw that secures the top cover to the base enclosureWhere used: One screw that secures the system board to the base enclosureTorx T8

Phillips PM2.0×2.0 broad-head screwColor Quantity Length Thread Head diameterBlack 3 2.0 mm 2.0 mm 7.0 mmWhere used: 3 screws that secure the top cove

Torx T8M2.5×6.0 screwColor Quantity Length Thread Heat widthBlack 12 6.0 mm 2.5 mm 5.0 mmWhere used: 8 screws that secure the display bezel to the dis

Category Description Computer modelsequipped withGLE960 systemboardComputer modelsequipped withGME965 systemboardSlovenia, South Africa, Turkey, and t

Phillips PM2.0×6.0 screwColor Quantity Length Thread Head diameterBlack 1 6.0 mm 2.0 mm 4.5 mmWhere used: One screw that secures the system board to t

Torx T8M2.0×4.0 screwColor Quantity Length Thread Head diameterBlack 2 4.0 mm 2.0 mm 4.5 mmWhere used: 2 screws that secure the optical drive connecto

Phillips PM2.5×7.0 screwColor Quantity Length Thread Head diameterBlack 1 7.0 mm 2.5 mm 5.0 mmWhere used: One screw that secures the fan to the base e

Phillips PM2.5×7.0 captive screwColor Quantity Length Thread Head diameterSilver 1 7.0 mm 2.5 mm 5.0 mmWhere used: One captive screw that secures the

Phillips PM2.5×10.0 captive screwColor Quantity Length Thread Head diameterSilver 4 10.0 mm 2.5 mm 5.0 mmWhere used: 4 captive screws that secure the

Phillips PM2.0×8.0 screwColor Quantity Length Thread Head diameterBlack 2 8.0 mm 2.0 mm 4.5 mmWhere used: 2 screws that secure the ExpressCard assembl

8Backup and recoveryCreating recovery discs in Windows VIstaAfter setting up the computer for the first time, be sure to create a set of recovery disc

Backing up your information in Windows VistaNOTE: You can only recover files that you have previously backed up. HP recommends that you useHP Backup &

Backing up specific files or foldersYou can back up specific files or folders to the recovery partition on the hard drive, to an optional externalhard

Creating recovery pointsWhen you back up modifications since your last backup, you are creating system recovery points. Thisallows you to save a snaps

Category Description Computer modelsequipped withGLE960 systemboardComputer modelsequipped withGME965 systemboardPowerrequirements65-W AC adapter with

Performing a recovery in Windows VistaNOTE: You can only recover files that you have previously backed up. HP recommends that you useHP Backup & R

Initiating a recovery in WindowsTo initiate a recovery in Windows, follow these steps:1.Back up all personal files.2. Select Start > All Programs &

Creating recovery discs in Windows XPAfter setting up the computer for the first time, be sure to create a set of recovery discs of the full factoryim

Backing up your information in Windows XPNOTE: You can only recover files that you have previously backed up. HP recommends that you useHP Backup and

Backing up specific files or foldersYou can back up specific files or folders to the recovery partition on the hard drive, to an optional externalhard

Creating recovery pointsWhen you back up modifications since your last backup, you are creating system recovery points. Thisallows you to save a snaps

Performing a recovery in Windows XPNOTE: You can only recover files that you have previously backed up. HP recommends that you useHP Backup and Recove

Initiating a recovery in WindowsTo initiate a recovery in Windows, follow these steps:1.Back up all personal files.2. Select Start > All Programs &

Initiating a recovery from the hard drive recovery partitionTo initiate a recovery from the hard drive recovery partition, follow these steps:1.Back u

9Connector pin assignmentsAudio-out (headphone)Pin Signal1 Audio out, left channel2 Audio out, right channel3GroundAudio-in (microphone)Pin Signal1 Au

2External component identificationTop componentsTouchPadItem Component Function(1)TouchPad* Moves the pointer and selects or activates items on thescr

External monitorPin Signal1 Red analog2 Green analog3 Blue analog4 Not connected5 Ground6 Ground analog7 Ground analog8 Ground analog9 +5 VDC10 Ground

RJ-11 (modem)Pin Signal1 Unused2 Tip3 Ring4 Unused5 Unused6 UnusedRJ-11 (modem) 133

RJ-45 (network)Pin Signal1 Transmit +2 Transmit -3 Receive +4 Unused5 Unused6 Receive -7 Unused8 UnusedUniversal Serial BusPin Signal1 +5 VDC2 Data -3

10Power cord set requirementsThe wide range input feature of the computer permits it to operate from any line voltage from 100 to 120volts AC or from

Requirements for specific countries and regionsCountry/region Accredited agency Applicable note numberAustralia EANSW 1Austria OVE 1Belgium CEBC 1Cana

11RecyclingBatteryWhen a battery has reached the end of its useful life, do not dispose of the battery in general householdwaste. Follow the local law

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 dis

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 pane

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

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 mercu

Buttons, lights, and speakerItem Component Function(1)Caps lock light On: Caps lock is on.(2)Wireless button Turns the wireless feature on or off, but

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 t

IndexAAC adapter, spare partnumber 24, 25antenna, disconnecting 44audio, product description 3audio-in jacklocation 9pin assignments 131audio-out jac

display panelproduct description 2removal 57display specifications 87DriveLock password 83drivesboot order 84preventing damage 32DVD/CD-RW Combo Drive

model name 1modem jacklocation 11pin assignments 133modem moduleproduct description 3removal 75spare part number 17, 25, 75monitor portlocation 11pin

serviceability, productdescription 5smart card security 83speakerlocation 8removal 53spare part number 16, 28, 53specificationscomputer 86display 87D

Item Component Function(5)Power light ● On: The computer is on.●Blinking: The computer is in the Sleep state (WindowsVista) or Standby (Windows XP).●O

Front componentsItem Component Function(1)Audio-out (headphone) jack Produces sound when connected to optional powered stereospeakers, headphones, ear

Right-side componentsItem Component Function(1)Optical drive Reads optical discs and, on select models, also writes tooptical discs.(2)Optical drive l

Left-side componentsItem Component Function(1)Battery light●Amber: A battery is charging.●Blue: A battery is close to full charge capacity.●Blinking a

© Copyright 2007 Hewlett-PackardDevelopment Company, L.P.AMD, the AMD Arrow logo, andcombinations thereof, are trademarks ofAdvanced Micro Devices, In

Bottom componentsItem Component Function(1)Battery bay Holds the battery.(2)Battery release latches (2) Release the battery from the battery bay.(3)Me

3Illustrated parts catalogSerial number locationWhen ordering parts or requesting information, provide the computer serial number and model numberloca

Computer major components14 Chapter 3 Illustrated parts catalog

Item Description Spare partnumber(1) Display assemblies (include 2 WLAN antenna transceivers and cables) 15.4-inch, WXGA BrightView 456802-001 15.4-i

Item Description Spare partnumber For use in Sweden 456624-B71 For use in Switzerland 456624-BG1 For use in Taiwan 456624-AB1 For use in Thailand

Item Description Spare partnumber ●T8300 2.40-GHz (3-MB L2 cache, 800-MHz FSB)463049-001 ●T8100 2.10-GHz (3-MB L2 cache, 800-MHz FSB)463048-001 ●T7800

Item Description Spare partnumberHungary, Iceland, Ireland, Israel, Italy, Latvia, Lebanon, Liechtenstein, Lithuania,Luxembourg, Malta, Monaco, the Ne

Item Description Spare partnumber ●For use in Japan441082-291 and448674-291 ● For use in South Korea 456576-AD1 Broadcom 802.11b/g WLAN modules: ●For

Item Description Spare partnumber DVD/CD-RW Combo Drive 456797-001 Cable Kit (not illustrated; see Cable Kit on page 22 for more Cable Kit spare part

Plastics KitItem Description Spare part number Plastics Kit:456614-001(1)Hard drive bay cover (includes 2 captive screws, secured by C-clips)(2)WLAN m

Safety warning noticeWARNING! To reduce the possibility of heat-related injuries or of overheating the computer, do notplace the computer directly on

Cable KitItem Description Spare part number Cable Kit:456594-001(1)RJ-11 jack cable(2)Display lid switch module and cable(3)Bluetooth module cable22 C

Mass storage devicesItem Description Spare part number(1) Optical drives (include bezel and bracket) DVD±RW and CD-RW Super Multi Double-Layer Combo D

Miscellaneous partsDescription Spare part number65-W AC adapter417220-001Logo Kit456617-001Nylon carrying case325814-001USB 1.1 diskette drive359118-0

Description Spare part number● Torx T8M2.5×3.0 broad-head screw●Torx T8M2.0×4.0 screwSequential part number listingSpare partnumberDescription246959-0

Spare partnumberDescriptionCroatia, Cyprus, the Czech Republic, Denmark, Djibouti, Dominica, the Dominican Republic, East Timor,Ecuador, Egypt, El Sal

Spare partnumberDescriptionGabon, Gambia, Georgia, Germany, Ghana, Gibraltar, Greece, Grenada, Guadeloupe, Guatemala, Guinea,Guinea-Bissa, Guyana, Hai

Spare partnumberDescription456576-AD1 Intel 802.11a/b/g WLAN module for use in South Korea456593-001 Speaker456594-001 Cable Kit (see Cable Kit on pag

Spare partnumberDescription456624-231 Keyboard for use in Slovakia456624-251 Keyboard for use in Russia456624-281 Keyboard for use in Thailand456624-2

Spare partnumberDescription459464-001 Intel Core 2 Duo T5550 1.83-GHz processor (2-MB L2 cache, 800-MHz FSB, includes replacement thermalmaterial)4594

4Removal and replacementproceduresPreliminary replacement requirementsTools requiredYou will need the following tools to complete the removal and repl

iv Safety warning notice

Cables and connectorsCAUTION: When servicing the computer, be sure that cables are placed in their proper locationsduring the reassembly process. Impr

Grounding guidelinesElectrostatic discharge damageElectronic components are sensitive to electrostatic discharge (ESD). Circuitry design and structure

Packaging and transporting guidelinesFollow these grounding guidelines when packaging and transporting equipment:●To avoid hand contact, transport pro

Equipment guidelinesGrounding equipment must include either a wrist strap or a foot strap at a grounded workstation.●When seated, wear a wrist strap c

Unknown user passwordIf the computer you are servicing has an unknown user password, follow these steps to clear the password:NOTE: These steps also c

Component replacement proceduresThis chapter provides removal and replacement procedures.There are as many as 82 screws, in 18 different sizes, that m

Computer feetThe computer feet are adhesive-backed rubber pads. The feet are included in the Rubber Kit, spare partnumber 456616-001. There are 6 rubb

BatteryDescription Spare part number6-cell, 55-Wh Li-ion battery 456865-0016-cell, 47-Wh Li-ion battery 456864-001Before disassembling the computer, f

Hard driveNOTE: All hard drive spare part kits include a hard drive bracket.Description Spare part number160-GB, 5400-rpm hard drive 457014-001120-GB,

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 dr

Table of contents1 Product description2 External component identificationTop components ...

WLAN moduleDescription Spare part numberIntel 802.11a/b/g/n WLAN modules:●For use in Antigua and Barbuda, Argentina, Aruba, the Bahamas, Barbados, Ber

Description Spare part numberRussia, Serbia and Montenegro, Singapore, Slovakia, Slovenia, South Africa, Spain, Sri Lanka,Sweden, Switzerland, Turkey,

Remove the WLAN module:1.Position the computer with the front toward you.2. Loosen the Phillips PM2.0×5.0 captive screw (1) that secures the WLAN modu

Reverse this procedure to install the WLAN module.Memory moduleDescription Spare part number2048-MB (PC2-5300, 667-MHz, DDR2) 417506-0011024-MB (PC2-5

4. Remove the memory module (2) by pulling the module away from the slot at an angle.NOTE: Memory modules are designed with a notch (3) to prevent inc

4. Remove the optical drive (3) from the computer.5.If it is necessary to replace the optical drive bracket, position the optical drive with the rear

Before removing the switch cover, follow these steps:1.Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn t

6. Remove the switch cover (2) by lifting it straight up.Reverse this procedure to install the switch cover.Component replacement procedures 49

KeyboardFor use in: Spare part number For use in: Spare part numberBelgiumBrazilThe Czech RepublicDenmarkFranceFrench CanadaGermanyGreeceHungaryIcelan

2.Remove the two Torx T8M2.5×7.0 screws that secure the keyboard to the computer.3.Turn the computer display-side up, with the front toward you.4.Open

Unknown user password ... 36Component replacement procedures ..

6. Release the zero insertion force (ZIF) connector (1) to which the keyboard cable is attached, anddisconnect the keyboard cable (2) from the system

SpeakerDescription Spare part numberSpeaker 456593-001Before removing the speaker, follow these steps:1.Shut down the computer. If you are unsure whet

Display lid switch moduleNOTE: The display lid switch module is included in the Cable Kit, spare part number Cable Kit, sparepart number 456594-001.Be

Display assemblyNOTE: All display assembly spare part kits include 2 WLAN antenna transceivers and cables.Description Spare part number15.4-inch, WXGA

3. Remove the four Torx T8M2.5×7.0 screws (1) that secure the display assembly to the computer.4. Lift the display assembly (2) straight up and remove

7. Remove the display bezel (3). The display bezel is available using spare part number456807-001.8. If it is necessary to replace the display inverte

12. Remove the display panel (2).13. Remove the four Phillips PM2.0×4.0 screws (1) that secure each display hinge to the displaypanel.14. Remove the d

Top coverDescription Spare part numberTop cover 456803-001Before removing the top cover, follow these steps:1.Shut down the computer. If you are unsur

2.Remove the followng screws:(1) Three Phillips PM2.0×2.0 broad-head screws(2) Seven Torx T8M2.5×7.0 screws(3) One Torx T8m2.5×4.0 screw3.Turn the com

10. Release the ZIF connector (4) to which the TouchPad cable is connected and disconnect the TouchPadcable from the system board.11.Remove the top co

System interrupt specifications ... 92System I/O address

TouchPad board and TouchPad button boardDescription Spare part numberTouchPad board (includes cable) 456600-001TouchPad button board (includes cable)

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 bac

9. Remove the TouchPad board (1) from the top cover.NOTE: When replacing the TouchPad board and TouchPad button board, be sure the TouchPadbutton actu

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 pa

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 d

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 screw4. Flex the left side of the

7.If it is necessary to replace the optical drive connector board, remove it from the connector on thesystem board. The optical drive connector board

FanDescription Spare part numberFan 431312-001Before removing the fan, follow these steps:1.Shut down the computer. If you are unsure whether the comp

3. Remove the fan (3) from the base enclosure.Reverse this procedure to install the fan.NOTE: To properly ventilate the computer, allow at least a 7.6

Heat sinkDescription Spare part numberHeat sink (includes replacement thermal material) 456605-001Before removing the heat sink, follow these steps:1.

Creating recovery points ... 127Scheduling backups ...

3. Remove the heat sink (2).NOTE: The thermal material must be thoroughly cleaned from the surfaces of the heat sink (1) and(2), the processor (3), an

ProcessorNOTE: All processor spare part kits include replacement thermal material.Description Spare part numberIntel Core 2 Duo processors:●T9300 2.50

c.Keyboard (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 Dis

Modem moduleNOTE: The modem module spare part kit does not include a modem module cable. The modem modulecable is included in the Cable Kit, spare par

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

RTC batteryNOTE: Removing the RTC battery and leaving it uninstalled for 5 or more minutes causes all passwordsand CMOS settings to be cleared.Descrip

2.Remove the RTC battery from the socket on the system board.Reverse this procedure to install the RTC battery.ExpressCard assemblyDescription Spare p

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 down,

5Computer SetupStarting Computer SetupComputer Setup is a preinstalled, ROM-based utility that can be used even when the operating system isnot workin

Using Computer SetupNavigating and selecting in Computer SetupThe information and settings in Computer Setup are accessed from the File, Security, Dia

1Product descriptionCategory Description Computer modelsequipped withGLE960 systemboardComputer modelsequipped withGME965 systemboardProduct NameHP Co

Computer Setup menusThe menu tables in this section provide an overview of Computer Setup options.NOTE: Some of the Computer Setup menu items listed i

Security menuSelect To do thisSetup password Enter, change, or delete a setup password.Power-On password Enter, change, or delete a power-on password.

System Configuration menuNOTE: Some of the listed System Configuration options may not be supported by your computer.Select To do thisLanguage (or pre

Select To do thisBuilt-In Device Options ● Enable/disable embedded WWAN Device Radio.●Enable/disable embedded WLAN Device Radio.●Enable/disable embedd

6SpecificationsComputer specifications Metric U.S.DimensionsLength26.68 cm 10.50 inWidth 35.80 cm 14.10 inHeight (front to rear) 3.23 to 3.58 cm 1.27

Metric U.S.Nonoperating 1.50 g zero-to-peak, 10 Hz to 500 Hz, 0.5 oct/min sweep rateNOTE: Applicable product safety standards specify thermal limits

Hard drive specifications 160-GB* 120-GB* 80-GB*DimensionsHeight9.5 mm 9.5 mm 9.5 mmWidth 70 mm 70 mm 70 mmWeight 101 g 101 g 101 gInterface typeSATA

DVD±RW and CD-RW Double-Layer Combo DrivespecificationsApplicable disc Read:CD-DA, CD+(E)G, CD-MIDI, CD-TEXT, CD-ROM,CD-ROM XA, MIXED MODE CD, CD-I, C

DVD/CD-RW Combo Drive specificationsApplicable disc Read:CD-DA, CD+(E)G, CD-MIDI, CD-TEXT, CD-ROM,CD-ROM XA, MIXED MODE CD, CD-I, CD-IBridge (Photo-CD

System DMA specificationsHardware DMA System functionDMA0 Not applicableDMA1* Not applicableDMA2* Not applicableDMA3 Not applicableDMA4 Direct memory