HP Compaq Presario,Presario 940 Technical Information

Compaq Presario CQ43 Notebook PCMaintenance and Service Guide

Category Description Computer modelsequipped with anAMD processorComputer modelsequipped with anIntel processor Intel Pentium P6200 2.13-GHz processo

BIOS installation procedures vary. Follow any instructions that are displayed on the screen after thedownload is complete. If no instructions are disp

6 SpecificationsComputer specifications Metric U.S.DimensionsDepth 23.1 cm 9.09 inWidth 34.2 cm 13.46 inHeight (front to back) 3.1 to 3.6 cm 1.22 to 1

14.0-inch display specifications Metric U.S.DimensionsHeight 17.6 cm 6.93 inWidth 31.2 cm 12.28 inDiagonal 35.7 cm 14.06 inNumber of colors Up to 16.8

Hard drive specifications 500-GB* 320-GB* 250-GB*DimensionsHeight 9.5 mm 9.5 mm 7.0 mmLength 100.4 mm 100.4 mm 100.4 mmWidth 69.9 mm 69.9 mm 69.9 mmWe

7 Backup and recoveryYour computer includes tools provided by the operating system and HP to help you safeguard yourinformation and restore it if ever

Creating restore mediaHP recommends that you create either a set of recovery discs or a recovery flash drive to be sure thatyou can restore your compu

Performing a system restoreRecovery Manager software allows you to repair or restore the computer to its original factory state.Recovery Manager works

Restoring using the restore media1. If possible, back up all personal files.2. Insert the first recovery disc into the optical drive on your computer

Backing up and recovering your informationIt is very important to back up your files and keep any new software in a safe place. As you add newsoftware

Using Windows Backup and RestoreGuidelines:●Be sure that the computer is connected to AC power before you start the backup process.●Allow enough time

Category Description Computer modelsequipped with anAMD processorComputer modelsequipped with anIntel processor Discrete graphics: AMD Radeon HD6370M

Create a system restore point1.Select Start > Control Panel > System and Security > System.2. In the left pane, click System Protection.3. Cl

8 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

9 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:1. Remove all screw covers (1) and screws (2) that secure the display bezel to the display assembly.2. Lift up and out on

4.Disconnect all display panel cables (1) from the display inverter and remove the inverter (2).5. Remove all screws (1) that secure the display panel

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

15.Remove the backlight cables (1) from the clip (2) in the display panel.16. Turn the display panel upside down.17. Remove the backlight frame from t

18.Remove the backlight from the backlight frame.19. Disconnect the display cable (1) from the LCD panel.20.Remove the screws (2) that secure the LCD

IndexAAC adapter, spare part numbers27, 29Action keys 10antennalocations 8removal 72spare part number 25, 30, 72Antenna Kit, spare part number25, 30,

Category Description Computer modelsequipped with anAMD processorComputer modelsequipped with anIntel processorHard drives Supports 6.35-cm (2.5-in) h

Ggraphics, product description 2grounding guidelines 35guidelinesequipment 38grounding 35packaging 37transporting 37workstation 37Hhard driveprecautio

processorproduct description 1removal 86spare part numbers 20, 29,30, 32, 86product descriptionaudio 4chipset 2display panel 3Ethernet 4external media

Category Description Computer modelsequipped with anAMD processorComputer modelsequipped with anIntel processorSupport for the following WLAN formats:

Category Description Computer modelsequipped with anAMD processorComputer modelsequipped with anIntel processorPorts●3-pin AC power●Audio-in (mono mic

Category Description Computer modelsequipped with anAMD processorComputer modelsequipped with anIntel processorOperatingsystemPreinstalled:●Windows 7

2 External component identificationDisplayItem Component Description(1) Speakers (2) Produce sound.(2) Internal display switch Turns off the display a

Item Component Description(6) Internal microphone Records sound.*The antennas are not visible from the outside of the computer. For optimal transmissi

KeysItem Component Description(1) esc key Displays system information when pressed in combinationwith the fn key.(2) fn key Displays system informatio

LightsItem Component Description(1) TouchPad light●Off: The TouchPad is on.●Amber: The TouchPad is off.(2) Caps lock light On: Caps lock in on.(3) Pow

© Copyright 2011 Hewlett-PackardDevelopment Company, L.P.AMD, the AMD Arrow logo, andcombinations thereof, are trademarks ofAdvanced Micro Devices, In

TouchPadItem Component Description(1) TouchPad light●Off: The TouchPad is on.●Amber: The TouchPad is off.(2) TouchPad on/off button Turns the TouchPad

Left sideItem Component Description(1) External monitor port Connects an external VGA monitor or projector.(2) Vents (2) Enable airflow to cool intern

Item Component Description(9) Hard drive light●Blinking white: The hard drive is being accessed.●Off: The hard drive is idle.(10) Power light●White: T

BottomItem Component Description(1) Battery bay Holds the battery.(2) Battery release latch Releases the battery from the battery bay.(3) Vents (5) En

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

Item Description Function(3) Part number/Product number (p/n) This number provides specific information about theproduct's hardware components. T

Computer major components18 Chapter 3 Illustrated parts catalog

Item Component Spare part number(1) 14.0-in, high definition (HD), light-emitting diode (LED), BrightView display assembly (includesmicrophone and wir

Item Component Spare part number(9b) Memory module/wireless module compartment cover (includes one captive screw, secured by a C-clip) NOTE: See Plas

Item Component Spare part number Intel Pentium B940 2.00-GHz processor (2.0-MB L2 cache, dual core, TJ85, 35 W) 653337-001 Intel Celeron DC T3500 2.

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

Item Component Spare part number Hard Drive Hardware Kit (not illustrated, includes hard drive bracket and screws) 646969-001(19) Memory modules (2,

Cable KitItem Component Spare part number Cable Kit, includes: 646119-001(1) TouchPad cable(2) Optical drive connector cable(3) Hard drive connector

Display assembly subcomponentsItem Component Spare part number(1) Display bezel 645964-001(2) Display hinge covers (2) 645970-001(3) 14.0-in, HD, LED,

Item Component Spare part number(6) Display Cable Kit (includes display panel cable and webcam/microphonemodule cable)645967-001(7) Antenna Kit (inclu

Mass storage devicesItem Component Spare part number(1) Hard drive (2.5-in, 7.0-mm, SATA; does not include hard drive connector cable, hard drive brac

Item Component Spare part number DVD-ROM Drive 659939-001 Optical drive slot space saver (not illustrated) 659930-001Miscellaneous partsComponent Spa

Plastics KitItem Component Spare part number Plastics Kit, includes: 646131-001(1) Hard drive compartment cover (includes one captive screw, secured

Sequential part number listingSpare part number Description490371-001 Power cord for use in North America (3-pin, black, 1.83-m)490371-011 Power cord

Spare part number Description622643-001 320-GB, 5400-rpm hard drive for use with all computer models (2.5-in, 7.0-mm, SATA; does notinclude hard drive

Spare part number Description645972-001 USB board (includes cable)645976-001 Display Screw Kit (includes Mylar screw covers and screws)645977-001 Scre

iv Safety warning notice

Spare part number Description646176-001 System board for use only with computer models equipped with an Intel Pentium processor and agraphics subsyste

Spare part number Description657325-001 Broadcom 4313GN 802.11b/g/n 1×1 WiFi and 20702 Bluetooth 4.0 Combo Adapter659930-001 Optical drive slot space

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

Drive handlingCAUTION: Drives are fragile components that must be handled with care. To prevent damage to thecomputer, damage to a drive, or loss of i

CAUTION: To prevent damage to the computer when you are removing or installing internalcomponents, observe these precautions:Keep components in their

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 chapter provides removal and replacement procedures.There are as many as 72 screws that must be removed, replaced

Item Component Description(4) Warranty period This number describes the duration of the warrantyperiod for the computer.(5) Model description This is

BatteryDescription Spare part number6-cell, 55-Whr, 2.55-Ah Li-ion battery 593554-0016-cell, 47-Whr, 2.20-Ah Li-ion battery 593553-001Before disassemb

Table of contents1 Product description ... 12

WLAN moduleDescription Spare part numberAtheros 9485GN 802.11b/g/n 1×1 WiFi and 3012 Bluetooth 4.0 Combo Adapter 655795-001Atheros AR9002WB-1NGB 802.1

2.Lift the rear edge of the memory module/wireless module compartment cover (2) up and forwarduntil it rests at an angle.3.Remove the memory module/wi

6.Remove the WLAN module by pulling the module away from the slot at an angle (3).NOTE: The WLAN module is designed with a notch (4) to prevent incorr

Memory moduleDescription Spare part number4-GB (PC3, 10600, 1333-MHz) 621569-0012-GB (PC3, 10600, 1333-MHz) 621565-0011-GB (PC3, 10600, 1333-MHz) 6397

Hard driveNOTE: The hard drive spare part kit does not include the hard drive connector cable, bracket, orscrews. The hard drive connector cable is in

2.Lift the rear edge of the hard drive compartment cover (2) up and forward until it rests atan angle.3.Remove the hard drive compartment cover. The h

6.Remove the hard drive (3).7. If it is necessary to replace the hard drive screws (1), the hard drive bracket (2), or the hard driveconnector cable (

Optical drive (select models only)NOTE: The optical drive spare part kit includes a bezel and bracket.Description Spare part numberDVD±RW and CD-RW Su

3.Remove the optical drive (3) by sliding it out of the optical drive bay.4.If it is necessary to replace the optical drive bracket, position the opti

KeyboardNOTE: The keyboard spare part kit includes a keyboard cable.Description Spare part number Description Spare part numberFor use with all comput

Packaging and transporting guidelines ... 37Component replacement procedures ...

Remove the keyboard:1. Remove the Phillips PM2.5×5.0 screw that secures the keyboard to the computer.2. Rest and secure the computer on its left side.

6.Lift the rear edge of the keyboard (1), and then swing the keyboard up and forward (2) until itrests upside down on the palm rest.7. Release the zer

Top coverNOTE: The top cover spare part kit includes the TouchPad and TouchPad cable.Description Spare part numberFor use only with computer models eq

3.Remove the nine Phillips PM2.5×6.0 screws that secure the top cover to the computer.4. Remove the two Phillips PM2.5×10.0 screws (1) and the four Ph

7.Release the ZIF connectors to which the following cables are attached, and then disconnect thecables from the system board:●Power button board cable

8.Remove the three Phillips PM2.5×6.0 screws that secure the top cover to the computer.9. Lift the rear edge of the top cover (1) until the left and r

Power button boardDescription Spare part numberPower button board (includes cable) 646129-001Before removing the power button board, follow these step

3.Remove the power button board and cable (2).Reverse this procedure to install the power button board and cable.TouchPad button boardDescription Spar

Remove the TouchPad button board and cable:1. Turn the top cover upside down, with the top toward you.2.Release the TouchPad board cable (1) and the T

SpeakersDescription Spare part numberSpeaker Kit (includes left and right speakers and cable) 645978-001Before removing the speakers, follow these ste

7 Backup and recovery ... 96Restore ...

5.Remove the speakers (6).Reverse this procedure to install the speakers.62 Chapter 4 Removal and replacement procedures

USB boardDescription Spare part numberUSB board (includes cable) 646128-001Before removing the USB board, follow these steps:1. Shut down the computer

Reverse this procedure to install the USB board.Power connector cableDescription Spare part numberPower connector cable 641394-001Before removing the

4.Release the power connector cable from the clip (2) built into the base enclosure.5. Turn the computer right-side up, with the front toward you.6. O

10.Remove the power connector (4).Reverse this procedure to install the power connector cable.Display assemblyDescription Spare part number14.0-in, HD

5.Disconnect the WLAN module antenna cables from the WLAN module (see WLAN moduleon page 42).6. Remove the following components:●Hard drive (see Hard

5.If it is necessary to replace the display bezel or any of the display assembly subcomponents:a. Remove the two Mylar screw covers (1) and the two Ph

c.Remove the webcam/microphone module (3). The webcam/microphone module is availableusing spare part number 646138-001.7. If it is necessary to replac

8.If it is necessary to replace the display panel:a. Remove the two Phillips PM2.5×4.0 screws (1) and four Phillips PM2.5×5.0 screws (2) thatsecure th

c.Release the adhesive strip (1) that secures the display panel cable to the display panel, andthen disconnect the display panel cable (2) from the di

viii

10.If it is necessary to replace the display panel cable:a. Release the tabs (1) built into the display enclosure shielding that secure the display pa

Reverse this procedure to reassemble and install the display assembly.System boardNOTE: The system board spare part kit includes replacement thermal m

●Speakers (see Speakers on page 61)●USB board (see USB board on page 63)●Power connector cable (see Power connector cable on page 64)●Display assembly

4.Remove the system board (3) by sliding it up and to the right at an angle.NOTE: A heat sink is attached to the base enclosure to service a component

Optical drive connector cableNOTE: The optical drive connector cable is included in the Cable Kit, spare part number645968-001.Before removing the opt

3.Remove the optical drive connector (3) from the base enclosure.Reverse this procedure to install the optical drive connector cable.Component replace

RTC batteryDescription Spare part numberRTC battery (includes cable and double-sided tape) 646132-001Before removing the RTC battery, follow these ste

3.Detach the RTC battery (2) from the system board. (The RTC battery is attached to the systemboard with double-sided tape.)4. Remove the RTC battery.

Fan/heat sink assemblyNOTE: The fan/heat sink assembly spare part kit includes replacement thermal material.Replacement thermal material is also avail

●Display assembly (see Display assembly on page 66)●System board (see System board on page 73)Remove the fan/heat sink assembly:1. Disconnect the fan

1 Product descriptionCategory Description Computer modelsequipped with anAMD processorComputer modelsequipped with anIntel processorProduct Name Compa

NOTE: The following illustration shows the fan/heat sink assembly removal process on a computermodel equipped with an Intel Pentium processor and a gr

NOTE: The following illustration shows the fan/heat sink assembly removal process on a computermodel equipped with an Intel Celeron processor.The ther

●Thermal paste is used on the processor (1) and the heat sink section (2) that services it●A thermal pad is used on the FCH chip (3) and the heat sink

●Thermal paste is used on the processor (1) and the heat sink section (2) that services it●A thermal pad is used on the Northbridge chip (3) and the h

ProcessorNOTE: This section applies only to computer models equipped with an Intel processor.NOTE: The processor spare part kit includes replacement t

●Display assembly (see Display assembly on page 66)●System board (see System board on page 73)●Fan/heat sink assembly (see Fan/heat sink assembly on p

5 Setup Utility (BIOS) and SystemDiagnosticsUsing Setup UtilitySetup Utility, or Basic Input/Output System (BIOS), controls communication between all

Navigating and selecting in Setup UtilityTo navigate and select in Setup Utility, follow these steps:1. Turn on or restart the computer, and then pres

Restoring factory settings in Setup UtilityNOTE: Restoring defaults will not change the hard drive mode.To return all settings in Setup Utility to the

Determining the BIOS versionTo determine whether available BIOS updates contain later BIOS versions than those currently installedon the computer, you