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Compaq CQ42 manual Remove the keyboard Reverse this procedure to install the keyboard

Models: CQ42

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5.Release the top edge of the keyboard by lifting it up to disengage the keyboard from the tabs on the top cover (1).

6.Slide the top edge of the keyboard back (2) until it rests against the display.

7.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.

8.Remove the keyboard.

Reverse this procedure to install the keyboard.

54 Chapter 4 Removal and replacement procedures

Page 64

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Compaq CQ42 manual Remove the keyboard Reverse this procedure to install the keyboard, Removal and replacement procedures

Contents

Maintenance and Service Guide SUMMARYCompaq Presario CQ42 Notebook PC and HP G42 Notebook PC Copyright 2010 Hewlett-Packard Development Company, L.P Safety warning notice iv Safety warning notice MSG revision history RevisionPublication date Descriptionvi MSG revision history Table of contents Electrostatic discharge damage 6 Specifications 7 Backup and recovery8 Connector pin assignments 9 Power cord set requirementsBattery Requirements for specific countries or regionsDisplay 10 Recycling1 Product description 2 Chapter 1 Product description Category 4 Chapter 1 Product description Category 6 Chapter 1 Product description Category 2 External component identification Identifying the hardware1. Select Start My Computer 3. Select Hardware tab Device ManagerTop components TouchPadLights 10 Chapter 2 External component identificationButton and speakers Keys 12 Chapter 2 External component identificationDisplay Internal microphoneRecords sound Integrated webcam select models onlyRight-side components 14 Chapter 2 External component identificationLeft-side components Bottom components 16 Chapter 2 External component identificationWireless antennas Additional hardware components 3 Illustrated parts catalog Serial number location20 Chapter 3 Illustrated parts catalog Computer major componentsSpare part number For use with integrated microphone and webcam Presario, biscotti 22 Chapter 3 Illustrated parts catalog Computer major components Bluetooth module Battery24 Chapter 3 Illustrated parts catalog DescriptionComputer major components on pageDisplay assembly components 26 Chapter 3 Illustrated parts catalog4 Webcam cable Plastics Kit 28 Chapter 3 Illustrated parts catalogMass storage devices Mass storage devicesMiscellaneous parts 30 Chapter 3 Illustrated parts catalogSequential part number listing Sequential part number listing32 Chapter 3 Illustrated parts catalog Spare partDescription numberSequential part number listing Spare partDescription number34 Chapter 3 Illustrated parts catalog Spare partDescription numberSequential part number listing Spare partDescription number4 Removal and replacement procedures Preliminary replacement requirementsService considerations Tools requiredCables and connectors Drive handlingGrounding guidelines Electrostatic discharge damagePackaging and transporting guidelines Workstation guidelinesEquipment guidelines Component replacement procedures Serial numberComputer feet 42 Chapter 4 Removal and replacement proceduresBattery Hard drive Component replacement procedures Reverse this procedure to install the hard drive 46 Chapter 4 Removal and replacement procedures6. Disconnect the hard drive cable from the system board 7. Remove the hard driveOptical drive 4. Remove the optical drive 48 Chapter 4 Removal and replacement procedures7. Remove the optical drive bracket WLAN module 4. Remove the battery see Battery on pageComponent replacement procedures Before removing the WLAN module, follow these steps50 Chapter 4 Removal and replacement procedures Reverse this procedure to install a WLAN module4. Disconnect the two WLAN antenna cables 1 from the WLAN module Memory module 52 Chapter 4 Removal and replacement procedures Reverse this procedure to install a memory module5. Remove the module 2 by pulling it away from the slot at an angle Keyboard 8. Remove the keyboard Reverse this procedure to install the keyboard 54 Chapter 4 Removal and replacement proceduresa. Battery see Battery on page Top coverb. Optical drive see Optical drive on page c. Keyboard see Keyboard on page56 Chapter 4 Removal and replacement procedures 4. Turn the computer display-side up with the front toward you5. Open the computer as far as possible 8. Disconnect the speaker cable 3 from the system boardReverse this procedure to install the switch cover Component replacement proceduresa. Optical drive see Optical drive on page Speaker assemblyb. Keyboard see Keyboard on page c. Top cover see Top cover on page Power button board a. Hard drive see Hard drive on pagec. Keyboard see Keyboard on page d. Top cover see Top cover on page b. Optical drive see Optical drive on pageTouchPad button board a. Hard drive see Hard drive on pageb. Optical drive see Optical drive on page c. Keyboard see Keyboard on page d. Top cover see Top cover on pageModem module a. Hard drive see Hard drive on pageb. Optical drive see Optical drive on page c. Keyboard see Keyboard on page d. Top cover see Top cover on page62 Chapter 4 Removal and replacement procedures 5. Remove the modem moduleBluetooth module a. Hard drive see Hard drive on pageb. Optical drive see Optical drive on page c. Keyboard see Keyboard on page d. Top cover see Top cover on pageUSB board a. Hard drive see Hard drive on pageb. Optical drive see Optical drive on page c. Keyboard see Keyboard on page d. Top cover see Top cover on pagePower connector cable a. Hard drive see Hard drive on pageb. Optical drive see Optical drive on page c. Keyboard see Keyboard on page d. Top cover see Top cover on pageDisplay assembly a. Keyboard see Keyboard on pagec. Top cover see Top cover on page b. Optical drive see Optical drive on pageComponent replacement procedures 8. Remove the display assembly6. Disconnect the webcam cable 2 from the system board 1 Two Mylar screw covers on the display bezel bottom edge 68 Chapter 4 Removal and replacement procedures2 Two Phillips PM2.5×4.0 screws 2. The display panel is available using the spare part number Component replacement proceduresa. Turn the display panel upside down in front of you b. Peel back the tape that secures the cable to the display18. Detach the wireless antenna 2 from the display back cover 70 Chapter 4 Removal and replacement proceduresComponent replacement procedures Reverse this procedure to reassemble and install the display assembly 72 Chapter 4 Removal and replacement proceduresRTC battery see RTC battery on page System boardMemory modules see Memory module on page WLAN module see WLAN module on pagef. Speaker assembly see Speaker assembly on page g. Display assembly see Display assembly on pagePower connector cable see Power connector cable on page Bluetooth cable see Bluetooth module on pageFan/heat sink assembly see Fan/heat sink assembly on page Processor see Processor on pageOptical drive SATA cable and connector h. System board see System board on pagef. Speaker assembly see Speaker assembly on page g. Display assembly see Display assembly on pageComponent replacement procedures RTC battery f. Speaker assembly see Speaker assembly on pageg. Display assembly see Display assembly on page a. Hard drive see Hard drive on page b. WLAN see WLAN module on pageReverse this procedure to install the RTC battery 3. Remove the RTC batteryComponent replacement procedures Fan/heat sink assembly e. Speaker assembly see Speaker assembly on pagef. Display assembly see Display assembly on page g. System board see System board on page4. Remove the fan/heat sink assembly Component replacement proceduresReverse this procedure to install the fan/heat sink assembly 82 Chapter 4 Removal and replacement proceduresProcessor 4. Remove the battery see Battery on pageComponent replacement procedures NOTE All processor spare part kits include thermal materiald. Top cover see Top cover on page e. Speaker assembly see Speaker assembly on pagef. Display assembly see Display assembly on page g. System board see System board on page5 Setup Utility Computer Setup in WindowsStarting Setup Utility Using Setup UtilityNavigating and selecting in Setup Utility Displaying system informationRestoring default settings in Setup Utility Setup Utility menus Exiting Setup UtilityMain menu Security menuDiagnostics menu System Configuration menuand f12 functions of Setup Utility in intervals of 5 seconds each Computer Setup in Linux Starting Computer SetupUsing Computer Setup Navigating and selecting in Computer SetupRestoring factory settings in Computer Setup Computer Setup menus File menuComputer Setup in Linux Diagnostics menuSecurity menu System Configuration menu 94 Chapter 5 Setup UtilityBuilt-in device options 6 Specifications Computer specifications35.6-cm 14.0-in display specifications 35.6-cm 14.0-in display specificationsHard drive specifications 98 Chapter 6 SpecificationsDVD±RW SuperMulti Double-Layer Drive with LightScribe specifications DVD±RW SuperMulti Double-Layer Drive with LightScribe specifications100 Chapter 6 Specifications System resource specifications 1. Select Start ComputerResources by type Resources by connection 4. Click Device Manager7 Backup and recovery WindowsCreating recovery discs Backing up your information Using Windows Backup and Restore 1. Select Start All Programs Maintenance Backup and RestorePerforming a recovery Using system restore pointsWhen to create restore points Create a system restore pointRecovering from the recovery discs Recovering from the dedicated recovery partition select models onlySelect Start All Programs Recovery Manager Recovery Manager 2. Click System Recovery in the Recovery Manager windowLinux backup and recovery Audio-out headphone 8 Connector pin assignmentsAudio-in microphone External monitor 110 Chapter 8 Connector pin assignmentsRJ-45 network RJ-11 modemRJ-11 modem HDMI 112 Chapter 8 Connector pin assignmentsUniversal Serial Bus Universal Serial Bus9 Power cord set requirements Requirements for all countries or regionsRequirements for specific countries or regions Country/regionAccredited agency Applicable note number10 Recycling BatteryDisplay 3. Remove the display bezel Perform the following steps to disassemble the display assemblyDisplay 7. Turn the display panel assembly upside-down 6. Remove the display panel assembly 2 from the display enclosure118 Chapter 10 Recycling 10. Remove the display panel frame 2 from the display panel 12. Lift the top edge of the backlight cover 2 and swing it outward13. Remove the backlight cover 14. Turn the display panel right-side up17. Remove the backlight frame from the display panel 16. Turn the display panel upside-down120 Chapter 10 Recycling 18. Remove the backlight from the backlight frame 19. Disconnect the display panel cable 1 from the LCD panel21. Release the LCD panel 3 from the display rear panel 23. Remove the LCD panel 24. Recycle the LCD panel and backlightSymbols/Numerics IndexI inverter J jacksPage