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Compaq CQ42 manual Remove the backlight from the backlight frame, Display

Models: CQ42

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18.Remove the backlight from the backlight frame.

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 the LCD panel to the display rear panel.

21.Release the LCD panel (3) from the display rear panel.

22.Release the tape (4) that secures the LCD panel to the display rear panel.

23.Remove the LCD panel.

24.Recycle the LCD panel and backlight.

Display 121

Image 131

Compaq CQ42 manual Remove the backlight from the backlight frame, Disconnect the display panel cable 1 from the LCD panel

Contents

Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC SUMMARYMaintenance and Service Guide Copyright 2010 Hewlett-Packard Development Company, L.P Safety warning notice iv Safety warning notice Description MSG revision historyRevision Publication datevi MSG revision history Table of contents Electrostatic discharge damage 9 Power cord set requirements 6 Specifications7 Backup and recovery 8 Connector pin assignments10 Recycling BatteryRequirements for specific countries or regions Display1 Product description 2 Chapter 1 Product description Category 4 Chapter 1 Product description Category 6 Chapter 1 Product description Category 3. Select Hardware tab Device Manager 2 External component identificationIdentifying the hardware 1. Select Start My ComputerTouchPad Top components10 Chapter 2 External component identification LightsButton and speakers 12 Chapter 2 External component identification KeysIntegrated webcam select models only DisplayInternal microphone Records sound14 Chapter 2 External component identification Right-side componentsLeft-side components 16 Chapter 2 External component identification Bottom componentsWireless antennas Additional hardware components Serial number location 3 Illustrated parts catalogSpare part number Computer major components20 Chapter 3 Illustrated parts catalog For use with integrated microphone and webcam Presario, biscotti 22 Chapter 3 Illustrated parts catalog Computer major components Description Bluetooth moduleBattery 24 Chapter 3 Illustrated parts catalogon page Computer major components26 Chapter 3 Illustrated parts catalog Display assembly components4 Webcam cable 28 Chapter 3 Illustrated parts catalog Plastics KitMass storage devices Mass storage devices30 Chapter 3 Illustrated parts catalog Miscellaneous partsSequential part number listing Sequential part number listingnumber 32 Chapter 3 Illustrated parts catalogSpare part Descriptionnumber Sequential part number listingSpare part Descriptionnumber 34 Chapter 3 Illustrated parts catalogSpare part Descriptionnumber Sequential part number listingSpare part DescriptionTools required 4 Removal and replacement proceduresPreliminary replacement requirements Service considerationsDrive handling Cables and connectorsElectrostatic discharge damage Grounding guidelinesWorkstation guidelines Packaging and transporting guidelinesEquipment guidelines Serial number Component replacement procedures42 Chapter 4 Removal and replacement procedures Computer feetBattery Hard drive Component replacement procedures 7. Remove the hard drive Reverse this procedure to install the hard drive46 Chapter 4 Removal and replacement procedures 6. Disconnect the hard drive cable from the system boardOptical drive 7. Remove the optical drive bracket 48 Chapter 4 Removal and replacement procedures4. Remove the optical drive Before removing the WLAN module, follow these steps WLAN module4. Remove the battery see Battery on page Component replacement procedures4. Disconnect the two WLAN antenna cables 1 from the WLAN module Reverse this procedure to install a WLAN module50 Chapter 4 Removal and replacement procedures Memory module 5. Remove the module 2 by pulling it away from the slot at an angle Reverse this procedure to install a memory module52 Chapter 4 Removal and replacement procedures Keyboard 54 Chapter 4 Removal and replacement procedures 8. Remove the keyboard Reverse this procedure to install the keyboardc. Keyboard see Keyboard on page a. Battery see Battery on pageTop cover b. Optical drive see Optical drive on page8. Disconnect the speaker cable 3 from the system board 56 Chapter 4 Removal and replacement procedures4. Turn the computer display-side up with the front toward you 5. Open the computer as far as possibleComponent replacement procedures Reverse this procedure to install the switch coverb. Keyboard see Keyboard on page c. Top cover see Top cover on page Speaker assemblya. Optical drive see Optical drive on page b. Optical drive see Optical drive on page Power button boarda. Hard drive see Hard drive on page c. Keyboard see Keyboard on page d. Top cover see Top cover on pagec. Keyboard see Keyboard on page d. Top cover see Top cover on page TouchPad button boarda. Hard drive see Hard drive on page b. Optical drive see Optical drive on pagec. Keyboard see Keyboard on page d. Top cover see Top cover on page Modem modulea. Hard drive see Hard drive on page b. Optical drive see Optical drive on page5. Remove the modem module 62 Chapter 4 Removal and replacement proceduresc. Keyboard see Keyboard on page d. Top cover see Top cover on page Bluetooth modulea. Hard drive see Hard drive on page b. Optical drive see Optical drive on pagec. Keyboard see Keyboard on page d. Top cover see Top cover on page USB boarda. Hard drive see Hard drive on page b. Optical drive see Optical drive on pagec. Keyboard see Keyboard on page d. Top cover see Top cover on page Power connector cablea. Hard drive see Hard drive on page b. Optical drive see Optical drive on pageb. Optical drive see Optical drive on page Display assemblya. Keyboard see Keyboard on page c. Top cover see Top cover on page6. Disconnect the webcam cable 2 from the system board 8. Remove the display assemblyComponent replacement procedures 2 Two Phillips PM2.5×4.0 screws 68 Chapter 4 Removal and replacement procedures1 Two Mylar screw covers on the display bezel bottom edge b. Peel back the tape that secures the cable to the display 2. The display panel is available using the spare part numberComponent replacement procedures a. Turn the display panel upside down in front of you70 Chapter 4 Removal and replacement procedures 18. Detach the wireless antenna 2 from the display back coverComponent replacement procedures 72 Chapter 4 Removal and replacement procedures Reverse this procedure to reassemble and install the display assemblyWLAN module see WLAN module on page RTC battery see RTC battery on pageSystem board Memory modules see Memory module on pageBluetooth cable see Bluetooth module on page f. Speaker assembly see Speaker assembly on pageg. Display assembly see Display assembly on page Power connector cable see Power connector cable on pageProcessor see Processor on page Fan/heat sink assembly see Fan/heat sink assembly on pageg. Display assembly see Display assembly on page Optical drive SATA cable and connectorh. System board see System board on page f. Speaker assembly see Speaker assembly on pageComponent replacement procedures a. Hard drive see Hard drive on page b. WLAN see WLAN module on page RTC batteryf. Speaker assembly see Speaker assembly on page g. Display assembly see Display assembly on pageComponent replacement procedures 3. Remove the RTC batteryReverse this procedure to install the RTC battery g. System board see System board on page Fan/heat sink assemblye. Speaker assembly see Speaker assembly on page f. Display assembly see Display assembly on pageComponent replacement procedures 4. Remove the fan/heat sink assembly82 Chapter 4 Removal and replacement procedures Reverse this procedure to install the fan/heat sink assemblyNOTE All processor spare part kits include thermal material Processor4. Remove the battery see Battery on page Component replacement proceduresg. System board see System board on page d. Top cover see Top cover on pagee. Speaker assembly see Speaker assembly on page f. Display assembly see Display assembly on pageUsing Setup Utility 5 Setup UtilityComputer Setup in Windows Starting Setup UtilityDisplaying system information Navigating and selecting in Setup UtilityRestoring default settings in Setup Utility Security menu Setup Utility menusExiting Setup Utility Main menuand f12 functions of Setup Utility in intervals of 5 seconds each System Configuration menuDiagnostics menu Navigating and selecting in Computer Setup Computer Setup in LinuxStarting Computer Setup Using Computer SetupRestoring factory settings in Computer Setup File menu Computer Setup menusSecurity menu Diagnostics menuComputer Setup in Linux 94 Chapter 5 Setup Utility System Configuration menuBuilt-in device options Computer specifications 6 Specifications35.6-cm 14.0-in display specifications 35.6-cm 14.0-in display specifications98 Chapter 6 Specifications Hard drive specificationsDVD±RW SuperMulti Double-Layer Drive with LightScribe specifications DVD±RW SuperMulti Double-Layer Drive with LightScribe specifications100 Chapter 6 Specifications 4. Click Device Manager System resource specifications1. Select Start Computer Resources by type Resources by connectionWindows 7 Backup and recoveryCreating recovery discs Backing up your information 1. Select Start All Programs Maintenance Backup and Restore Using Windows Backup and RestoreCreate a system restore point Performing a recoveryUsing system restore points When to create restore points2. Click System Recovery in the Recovery Manager window Recovering from the recovery discsRecovering from the dedicated recovery partition select models only Select Start All Programs Recovery Manager Recovery ManagerLinux backup and recovery Audio-in microphone 8 Connector pin assignmentsAudio-out headphone 110 Chapter 8 Connector pin assignments External monitorRJ-11 modem RJ-11 modemRJ-45 network 112 Chapter 8 Connector pin assignments HDMIUniversal Serial Bus Universal Serial BusRequirements for all countries or regions 9 Power cord set requirementsApplicable note number Requirements for specific countries or regionsCountry/region Accredited agencyDisplay Battery10 Recycling Display Perform the following steps to disassemble the display assembly3. Remove the display bezel 118 Chapter 10 Recycling 6. Remove the display panel assembly 2 from the display enclosure7. Turn the display panel assembly upside-down 14. Turn the display panel right-side up 10. Remove the display panel frame 2 from the display panel12. Lift the top edge of the backlight cover 2 and swing it outward 13. Remove the backlight cover120 Chapter 10 Recycling 16. Turn the display panel upside-down17. Remove the backlight frame from the display panel 23. Remove the LCD panel 24. Recycle the LCD panel and backlight 18. Remove the backlight from the backlight frame19. Disconnect the display panel cable 1 from the LCD panel 21. Release the LCD panel 3 from the display rear panelIndex Symbols/NumericsJ jacks I inverterPage