Compaq 6720t Specifiche

HP Compaq 6720t Mobile Thin ClientMaintenance and Service Guide

Category Description Audio-out (stereo headphone) Docking RJ-11 (modem) RJ-45 (Ethernet) USB (3) VGA (Dsub 15-pin) supporting 1600 × 1200 extern

RJ-11 (modem)Pin Signal1 Unused2 Tip3 Ring4 Unused5 Unused6 Unused92 Chapter 8 Connector pin assignments

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

9Power 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 2

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

10RecyclingBatteryWhen 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

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

2External component identificationTop componentsDisplayItem Component Function(1)Wireless antennae (2) Send and receive signals from one or more wirel

IndexAAC adapter, spare partnumber 17, 18accessory battery connector 10antennadisconnecting 41location 3audio, product description 1audio-in jackloca

Eelectrostatic discharge 23esc key 6Ethernet, product description 1external media cards, productdescription 1external monitor portlocation 10pin assig

pin assignmentsaudio-in jack 90audio-out jack 90external monitor port 91headphone jack 90microphone jack 90modem jack 92monitor port 91network jack 93

USB portlocation 9pin assignments 93Vvents 9, 10volume down button 5volume mute button 5volume mute light 4volume up button 5WWindows applications ke

LightsItem Component Function(1)Wireless lights* (2)●Blue: An integrated wireless device, such as a wirelesslocal area network (WLAN) device, is on.●O

Item Component Function*The 2 wireless lights display the same information. The light on the wireless button is visible only when the computer is open

KeysItem Component Function(1)esc key Displays system information when pressed in combinationwith the fn key.(2)fn key Executes frequently used system

TouchPadItem Component Function(1)TouchPad* Moves the pointer and selects or activates items on thescreen.(2)Left TouchPad button* Functions like the

Front componentsItem Component Function(1)Wireless light●On: An integrated wireless device, such as a wirelesslocal area network (WLAN) device, is on.

Right-side componentsItem Component Function(1)Audio-out (headphone) jack Produces sound when connected to optional poweredstereo speakers, headphones

Rear componentsItem Component Description(1)Power connector Connects an AC adapter.(2)External monitor port Connects an external VGA monitor or projec

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

© Copyright 2008 Hewlett-PackardDevelopment Company, L.P.Bluetooth is a trademark owned by itsproprietor and used by Hewlett-PackardCompany under lice

Computer major componentsItem Description Spare partnumber(1) 15.4-inch, WXGA, antiglare display assembly (includes display panel cable and 2wireless

Item Description Spare partnumber Display hinges (includes left and right hinges) 466166-001 Display inverter 466167-001(2) Switch cover (includes L

Item Description Spare partnumber ●For use in Canada, Cayman Islands, Guam, Puerto Rico, the U.S. Virgin Islands, and theUnited States441075-001 ● Fo

Item Description Spare partnumber(16) 1024-MB, PC2-5300, 667-MHz, DDR2 memory module414046-001(17) 6-cell, 47-Wh Li-ion battery467784-001(18) 8X Max D

Plastics KitItem Description Spare part number Plastics Kit:417527-001(1)Flash drive bay cover (includes 2 captive screws, secured by C-clips)(2)PC Ca

Miscellaneous partsDescription Spare part number65-W HP Smart Adapter391172-001Power cords:For use in Australia and New Zealand246959-011For use in Br

Sequential part number listingSpare partnumberDescription246959-001 Power cord for use in the United States246959-011 Power cord for use in Australia

Spare partnumberDescription466422-001 Base enclosure (includes 8 rubber feet)466423-001 Top cover (includes TouchPad board and cable, TouchPad button

Spare partnumberDescription481424-BG1 For use in Slovenia481424-B31 For use in Israel481424-B71 For use in Switzerland481424-DD1 For use in Iceland481

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

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

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 81 screws and screw locks, in 13 differe

Computer feetThe computer feet are adhesive-backed rubber pads. The feet are included in the Rubber Kit, spare partnumber 480830-001. There are four o

BatteryDescription Spare part number6-cell, 47-Wh Li-ion battery 467784-001Before disassembling the computer, follow these steps:1.Shut down the compu

Flash driveDescription Spare part number1-GB flash drive (includes flash drive bracket) 465619-001Before removing the flash drive, follow these steps:

5. Remove the flash drive (3) from the flash drive bay.6.If it is necessary to replace the flash drive bracket, slide the module out of the bracket.Re

iv Safety warning notice

2. Lift the right edge of the cover (2), swing it up and to the left, and remove the cover. The memorymodule compartment cover is included in the Plas

Optical driveNOTE: All optical drive spare part kits include an optical drive bezel.Description Spare part number8X Max DVD-ROM Drive 467782-001Before

7. Remove the optical drive bracket (2).Reverse this procedure to reassemble and install an optical drive.34 Chapter 4 Removal and replacement proce

KeyboardDescription Spare part numberKeyboards for use in the following countries or regions:Belgium481424-181 Portugal 481424-131The Czech Republic 4

Remove the keyboard:1.Remove the two Torx T8M2.5×9.0 screws that secure the keyboard to the computer.2.Turn the computer display-side up, with the fro

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

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

Heat sinkDescription Spare part numberHeat sink (includes replacement thermal material) 468102-001Before removing the heat sink, follow these steps:1.

Reverse this procedure to install the heat sink.40 Chapter 4 Removal and replacement procedures

WLAN moduleDescription Spare part numberBroadcom 802.11a/b/g WLAN modules:●For use in Canada, Cayman Islands, Guam, Puerto Rico, the U.S. Virgin Islan

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

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

Switch coverDescription Spare part numberSwitch cover (includes LED board and cable) 417520-001Before removing the switch cover, follow these steps:1.

7. Remove the switch cover (2) by lifting it straight up.Reverse this procedure to install the switch cover.44 Chapter 4 Removal and replacement pro

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

5. Remove the six Torx T8M2.5×9.0 screws (1) that secure the display assembly to the computer.6. Lift the display assembly (2) straight up and remove

9. Remove the display bezel (4). The display bezel is available using spare part number466164-001.10. If it is necessary to replace the display invert

13. Remove the display inverter (3). The display inverter is available using spare part number466167-001.14. If it is necessary to replace the display

Top coverDescription Spare part numberTop cover (includes TouchPad board and cable, TouchPad button board and cable, speakers andcable)466423-001Befor

4. Disconnect the speaker cable (1) from the system board.5. Remove the four Torx T8M2.5×5.0 screws (2) that secure the top cover to the computer.6. L

Modem moduleNOTE: The modem module spare part kit does not include a modem module cable. The modem modulecable is included with the system board frame

Equipment guidelines ... 25Unknown user password ...

3. Disconnect the modem module cable (3) from the modem module.4.Remove the modem module.Reverse this procedure to install the modem module.System boa

When replacing the system board, be sure that the following components are removed from the defectivesystem board and installed on the replacement sys

9. Remove the system board frame and system board (3) from the base enclosure.10. Release the modem module cable (1) from the two clips built into the

15. Remove the system board (2) by pulling it away from the system board frame at an angle.Reverse the preceding procedure to install the system board

Remove the PC Card assembly:1.Turn the system board upside down, with the front toward you.2.Remove the two Phillips PM2.0×4.0 screws that secure the

Modem module cableNOTE: The modem module cable is included with the system board frame, spare part number480894-001. See System board and system board

Audio/USB boardDescription Spare part numberAudio/USB board (includes audio board cable and USB board cable) 480828-001Before removing the audio/USB b

2. Lift the rear edge of the audio/USB board (2) until the board is clear of the base enclosure.3.Remove the audio/USB board from the base enclosure.R

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

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

Phillips PM2.0×6.0 captive screw ... 73Torx T8M2.5×9.0 screw

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

Diagnostics menuSelect To do thisMemory Check Run a comprehensive test on system memory.System Configuration menuNOTE: Some of the listed System Confi

6SpecificationsComputer specifications Metric U.S.DimensionsLength26.0 cm 10.23 inWidth 35.7 cm 14.05 inHeight (front to rear) 3.0 to 3.6 cm 1.16 to

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

8X Max DVD-ROM Drive specificationsApplicable discDVD-ROM (DVD-5, DVD-9, DVD-10, DVD-18, CD-ROM (Mode 1 and 2), CD DigitalAudio, CD-XA ready (Mode 2,

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

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

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

Phillips PM2.0×6.0 captive screwColor Quantity Length Thread Head diameterBlack 3 6.0 mm 2.0 mm 5.0 mmWhere used:(1) Two captive screws that secure th

Torx T8M2.5×9.0 screwColor Quantity Length Thread Head diameterBlack 21 9.0 mm 2.5 mm 5.0 mmWhere used:(1) One screw that secures the optical drive to

Where used: 6 screws that secure the display assembly to the computerWhere used: 10 screws that secure the top cover to the computerWhere used: 2 scre

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

Phillips PM2.0×3.0 screwColor Quantity Length Thread Head diameterSilver 6 3.0 mm 2.0 mm 4.5 mmWhere used: 2 screws that secure the WLAN module to the

Where used: 4 screws that secure the heat sink to the computerPhillips PM2.5×3.0 screwColor Quantity Length Thread Head diameterBlack 4 3.0 mm 2.5 mm

Phillips PM2.0×2.0 broad-head screwColor Quantity Length Thread Head diameterBlack 5 2.0 mm 2.0 mm 7.0 mmWhere used: 3 screws that secure the switch c

Where used: 2 screws that secure the display assembly right hinge to the computer80 Chapter 7 Screw listing

Torx T8M2.5×5.0 screwColor Quantity Length Thread Head diameterBlack 14 5.0 mm 2.5 mm 5.0 mmWhere used: 4 screws that secure the display bezel top edg

1Product descriptionCategory DescriptionProduct NameHP Compaq 6720t Mobile Thin ClientProcessorsIntel® Celeron® M423 1.06-GHz processor 1-MB L2 cache,

Where used: 4 screws that secure the top cover to the base enclosure82 Chapter 7 Screw listing

Torx T8M2.5×7.0 screwColor Quantity Length Thread Head diameterBlack 2 9.0 mm 2.5 mm 5.0 mmWhere used: 2 screws that secure the display bezel bottom e

Black Phillips PM2.0×4.0 screwColor Quantity Length Thread Head diameterBlack 10 4.0 mm 2.0 mm 4.5 mmWhere used: 8 screws that secure the display hing

Where used: 2 screws that secure the PC Card assembly to the system boardBlack Phillips PM2.0×4.0 screw 85

Torx T8M2.5×4.0 screwColor Quantity Length Thread Heat widthBlack 5 4.0 mm 2.5 mm 5.0 mmWhere used: 3 screws that secure the system board to the syste

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

Torx T8M2.5×6.0 screwColor Quantity Length Thread Head diameterBlack 5 6.0 mm 2.5 mm 5.0 mmWhere used: 5 screws that secure the system board frame to

Hex HM5.0×11.0 screw lockColor Quantity Length Thread Head diameterSilver 2 11.0 mm 2.5 mm 5.0 mmWhere used: 2 screw locks that secure the system boar

8Connector pin assignmentsAudio-out (headphone)Pin Signal1 Audio out, left channel2 Audio out, right channel3GroundAudio-in (microphone)Pin Signal1 Au

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