HP 4320t Service Manual

HP 4320t Mobile Thin ClientMaintenance and Service GuideSUMMARYThis guide is a troubleshooting reference used for maintaining and servicing the comput

Category DescriptionDiskettedriveSupports external USB diskette drive onlyAudio/VisualHD audio - IDT 92HD80Integrated microphoneTwo stereo speakersHea

8 RecyclingBatteryWhen a battery has reached the end of its useful life, do not dispose of the battery in generalhousehold waste. 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 merc

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

IndexAAC adapteridentifying 14spare part numbers 24antenna, disconnecting 55antennasWLAN 13applications key, Windows 7audio, product description 2audi

Ethernet, product description 2Execution Disable 83ExpressCard slot bezel,illustrated 21ExpressCard slot, identifying 10external media cards, productd

Ethernet 2external media cards 2graphics 1keyboard 2memory module 1modem module 2operating system 3optical drives 1panels 1pointing devices 2ports 2po

Category DescriptionPowerrequirements65-W Smart AC Adapter with localized cable plug support (3-wire plug with ground pin)9-cell, 93-Wh Li-ion battery

2 External component identificationTop componentsTouchPadComponent Description(1) TouchPad off indicator To turn the TouchPad zone on and off, quickly

LightsComponent Description(1) TouchPad off indicator●Amber: The TouchPad is off.●Off: The TouchPad is on.(2) Caps lock light On: Caps lock is on.(3)

Buttons, speakers, and switchesNOTE: Your computer may look slightly different from the illustration in this section.Component Description(1) Speakers

KeysComponent Description(1) esc key Displays system information when pressed incombination with the fn key.(2) fn key Executes frequently used system

Front componentsComponent Description(1) Drive light●Blinking white: The solid-state module or optical drive isbeing accessed.●Amber: HP 3D DriveGuard

Right-side componentsComponent Description(1) USB 2.0 ports (2) Connect optional USB devices.(2) RJ-11 (modem) jack Connects a modem cable.(3) Optical

Left-side componentsComponent Description(1) Security cable slot Attaches an optional security cable to the computer.NOTE: The security cable is desig

Bottom componentsComponent Description(1) Battery release latches (2) Release the battery from the battery bay.(2) Battery bay Holds the battery.Botto

© Copyright 2010 Hewlett-PackardDevelopment Company, L.P.Intel and Arrandale are trademarks of IntelCorporation in the U.S. and other countries.Window

DisplayNOTE: Your computer may look slightly different from the illustration in this section.Component Description(1) Internal display switch Turns of

Wireless antennas (select models only)The antennas send and receive signals from one or more wireless devices. These antennas are notvisible from the

Additional hardware componentsComponent Description(1) Power cord* Connects an AC adapter to an AC outlet.(2) Battery* Powers the computer when the co

3 Illustrated parts catalogService tagWhen ordering parts or requesting information, provide the computer serial number and modeldescription provided

Computer major componentsItem Description Spare part number(1) 33.8-cm (13.3-in) high-definition (1366x768 resolution) display assembly (see Displayas

Item Description Spare part number ●For use in Belgium 599572-A41 ●For use in Brazil 599572-201 ●For use in Bulgaria 599572-261 ●For use in Canada (Fr

Item Description Spare part number(9) Fan 599544-001(10) Processor heat sink 599546-001(11) Memory module (PC3-10600, 1333-MHz, DDR3, shared) 2048-

Item Description Spare part number For use in Afghanistan, Albania, Algeria, Andorra, Angola, Argentina, Armenia, Australia,Austria, Azerbaijan, Bahr

Display assembly componentsItem Description Spare part number Display assembly: 599553-001(1) Display bezel 599532-001(2) Display panel (available se

Plastics KitItem Description Spare part number Plastics Kit: 599563-001(1) ExpressCard slot bezel (2) DVD-ROM drive blank (used with no-ODD option)

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: 599525-001(1) Power connector and cable (2) RJ-11 (modem) jack and cable 22 Chapter 3 Ill

Mass storage devicesItem Description Spare part number(1) Solid-state module (includes bracket) 2-GB 614527-001 4-GB 614528-001 8-GB 634653-001(2) DVD

Miscellaneous partsDescription Spare part numberAC adapters65-W, 3-pin Smart AC adapter ●For use in all countries and regions except India 609939-001

Sequential part number listingSpare partnumberDescription490371-001 Power cord (AC power, 3-pin, black, 1.83 m), for use in North America490371-011 Po

Spare partnumberDescription582564-001 Broadcom 43224 802.11a/b/g/n 2x2 WiFi Adapter, for use in Antigua and Barbuda, Aruba, Bahamas,Barbados, Belize,

Spare partnumberDescription599565-001 Screw Kit599566-001 Speaker assembly599567-001 Switch cover599569-001 Top cover599572-001 Keyboard, for use in t

Spare partnumberDescription609939-001 65-W, 3-pin Smart AC adapter for use in all countries and regions except India609948-001 65-W, 3-pin Smart AC ad

4 Removal and replacement proceduresPreliminary replacement requirementsTools requiredYou will need the following tools to complete the removal and re

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

iv Safety warning notice

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

Component replacement proceduresThis section provides removal and replacement procedures.There are as many as 83 screws, in 8 different sizes, that mu

Computer feetDescription Spare part numberRubber Kit (includes computer feet) 599564-001The computer feet are adhesive-backed rubber pads. The feet ar

BatteryDescription Spare part numberBattery 9-cell, 93-Wh (2.8-Ah) Li-ion 593573-0016-cell, 47-Wh (2.2-Ah) Li-ion 593572-001Before disassembling the

Switch coverDescription Spare part numberSwitch cover 599567-001Before removing the switch cover, follow these steps:1. Shut down the computer.2. Disc

4. Slide the switch cover back (1), and then remove it from the computer (2).Reverse this procedure to install the switch cover and keyboard.38 Chapte

KeyboardDescription Spare part numberKeyboard (includes keyboard cable) 599572-xxxNOTE: For a detailed list of keyboards see the parts list in Compute

2. Slide the keyboard back toward the display (1), and then rotate it right (2) until it rests upsidedown on the right side of the computer.3. Release

Memory moduleDescription Spare part numberMemory module (PC3-10600, 1333-MHz, DDR3, shared) 2048-MB 598856-0021024-MB 598859-002Before removing the m

Table of contents1 Product description ...

3. 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

DVD-ROM driveDescription Spare part numberDVD-ROM drive 599539-001Before removing the DVD-ROM drive, follow these steps:1. Shut down the computer.2. D

5. If it is necessary to replace the DVD-ROM drive bracket, position the DVD-ROM drive with therear toward you.6. Remove the two PM2.0×3.0 screws (1)

Power button boardDescription Spare part numberPower button board with cable 599517-001Before removing the power button board, follow these steps:1. S

SpeakersDescription Spare part numberSpeaker assembly 599566-001Before removing the speakers, follow these steps:1. Shut down the computer.2. Disconne

7. Slide the right speaker back and out from the tab (5) that holds it at the right, then lift the rightspeaker (6) up and out at an angle.Reverse thi

Palm restDescription Spare part numberPalm rest (includes TouchPad) 599551-001Before removing the palm rest, follow these steps:1. Shut down the compu

5. Remove the palm rest (3).Reverse this procedure to install the palm rest.Component replacement procedures 49

Solid-state moduleNOTE: The solid-state module spare part kit includes a solid-state module bracket.Description Spare part number2-GB 614527-0014-GB 6

4. Remove the solid-state module (4) from the solid-state module bay.5. If it is necessary to replace the solid-state module bracket, remove the PM3.0

Grounding guidelines ... 31Electrostatic dischar

RTC batteryDescription Spare part numberRTC battery 599516-001Before removing the RTC battery, follow these steps:1. Shut down the computer.2. Disconn

Reverse this procedure to install the RTC battery.Component replacement procedures 53

WLAN moduleDescription Spare part numberBroadcom 4312G 802.11b/g WiFi Adapter For use in Barbados, Belize, Canada, the Cayman Islands, Guam, Puerto R

CAUTION: To prevent an unresponsive system, replace the wireless module only with a wirelessmodule authorized for use in the computer by the governmen

4. 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

Heat sink and fanNOTE: The heat sink spare part kit includes replacement thermal material.Description Spare part numberFan 599544-001Processor heat si

4. Lift the right edge of the heat shield to disengage the tabs on the left side of the heat shield fromthe top cover, and then remove the heat shield

7. Following the sequence stamped into the heat sink, loosen the four PM2.5×10.0 captive screws(1) that secure the heat sink to the processor.8. Lift

ProcessorNOTE: The processor spare part kit includes replacement thermal material.Description Spare part numberProcessor, Intel Arrandale P4500 1.8-GH

3. Lift the processor (2) straight up and remove it.NOTE: When you install the processor, the gold triangle (3) on the processor must be alignedwith t

DVD-ROM drive specifications ... 88System reso

Display assemblyNOTE: The display assembly spare part kit includes 2 WLAN antennas and cables.Description Spare part numberDisplay assembly, 33.8-cm (

3. Lift the display assembly (4) straight up and remove it from the base enclosure.4. If it is necessary to replace the display bezel, display enclosu

c. Flex the inside edge of the left side and the right side of the bezel until it disengages fromthe display back cover (3).d. Remove the display beze

8. Peel back the tape (1) that secures the display cable to the display panel, and then release theZIF connector (2). Remove the cable from the displa

11. Gently release the integrated microphone (1) from the clips at the top of the display back cover,remove the display cable from the clips and routi

Top coverDescription Spare part numberTop cover 599569-001Before removing the top cover, follow these steps:1. Shut down the computer.2. Disconnect a

4. Release the top cover from the sides of the base enclosure , and gently use a flat-bladedscrewdriver to pry loose the top cover along the front edg

Modem moduleDescription Spare part numberModem moduleNOTE: The modem module spare part kit does not include a modem module cable. The modemmodule cabl

5. Remove the modem module.Reverse this procedure to install the modem module.70 Chapter 4 Removal and replacement procedures

System boardNOTE: The system board spare part kit includes replacement thermal material.Description Spare part numberSystem board (includes replacemen

viii

5. Use the optical drive connector (4) to lift the right side (5) of the system board.6. Remove the system board (6) at an angle.Reverse this procedur

USB connector boardDescription Spare part numberUSB board with cable 599524-001Before removing the USB connector assembly, follow these steps:1. Shut

3. Remove the USB connector assembly (2) from the base enclosure.Reverse this procedure to install the USB connector assembly.74 Chapter 4 Removal a

Modem module cableNOTE: The modem module cable with RJ-11 connector is included in the Cable Kit on page 22, partnumber 599525-001.Before removing the

3. Remove the modem cable (2) from the routing channel in the base enclosure.4. Remove the modem cable.Reverse this procedure to install the modem cab

Power connector cableNOTE: The power connector cable (DC power) is included in the Cable Kit on page 22, part number599525-001.Before removing the pow

2. Disconnect the power connector cable from the base enclosure (1), and then remove the cablefrom the routing channel (2) in the base enclosure.3. Re

5 Computer SetupStarting Computer SetupComputer Setup is a preinstalled, ROM-based utility that can be used even when the operatingsystem is not worki

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

4. Follow the on-screen instructions.5. To save your changes and exit, click the Save icon in the lower-left corner of the screen, andthen follow the

1 Product descriptionCategory DescriptionProductNameHP 4320t Mobile Thin Client, UMAProcessors Intel® Arrandale™ P4500, 1.8-GHz, 3-MB L3 cache (35 W)C

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

Select To do thisBoot Options●Set a Startup Menu delay (in seconds).●Set the Express Boot Popup delay in seconds.●Enable/disable CD-ROM boot (enabled

Select To do thisBuilt-In Device Options●Enable/disable the wireless button state (enabled bydefault).●Enable/disable the embedded WLAN device (enable

6 SpecificationsComputer specificationsDimensionsDepth 22.81 cm (8.98 in)Width 32.2 cm (12.68 in)Height (front to rear) 27.5 to 35.5 cm (1.08 to 1.40

Operating 0.75 g zero-to-peak, 10 Hz to 500 Hz, 0.25oct/min sweep rateNonoperating 1.50 g zero-to-peak, 10 Hz to 500 Hz, 0.5 oct/min sweep rateNOTE: A

Solid-state module specifications 2-GB* 4-GB* 8-GB*Dimensions Height 9.5 mm 9.5 mm 9.5 mmWidth 70 mm 70 mm 70 mmWeight 15 g 15 g 15 gInterface type S

DVD-ROM drive specificationsApplicable disc DVD-ROM (DVD-5, DVD-9, DVD-10, DVD-18, CD-ROM (Mode 1 and 2),CD Digital Audio, CD-XA ready (Mode 2, Form 1

System resource specificationsYou can use Device Manager to get a graphical view of the system resources that control how thedevices work on the compu

7 Power cord set requirementsThe wide range input feature of the computer permits it to operate from any line voltage from 100 to120 volts AC or from

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