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This guide will demonstrate the removal and replacement procedures for an IBM ThinkPad T42 Modem Daughter Board.

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  1. IBM ThinkPad T42 Modem Daughter Board Replacement, Bottom Cover: step 1, image 1 of 1
    • Unscrew the 20 Phillips screws on the underside of the T42.

    • For ease of reassembly, keep your screws organized.

  2. IBM ThinkPad T42 Modem Daughter Board Replacement, Rear Screws: step 2, image 1 of 1
    • Unscrew the 2 Phillips screws on both sides of the T42's rear.

  3. IBM ThinkPad T42 Modem Daughter Board Replacement, Keyboard/Trackpad Removal: step 3, image 1 of 1
    • Flip the laptop over and open the screen.

    • The bezel and keyboard will be loose, be careful.

  4. IBM ThinkPad T42 Modem Daughter Board Replacement, Disconnecting Ribbon Cables: step 4, image 1 of 2 IBM ThinkPad T42 Modem Daughter Board Replacement, Disconnecting Ribbon Cables: step 4, image 2 of 2
    • Carefully maneuver the palm rest away from the keyboard, as both the keyboard and palm rest/trackpad will come off together.

    • Remember, both the keyboard and trackpad have connectors to the motherboard. Disconnect these before completely removing either component.

  5. IBM ThinkPad T42 Modem Daughter Board Replacement, Disassembling IBM ThinkPad T42 Plastic Edge Cover: step 5, image 1 of 2 IBM ThinkPad T42 Modem Daughter Board Replacement, Disassembling IBM ThinkPad T42 Plastic Edge Cover: step 5, image 2 of 2
    • Starting from the bottom right, carefully remove off the bezel. Use a spudger or flat head screwdriver if needed.

  6. IBM ThinkPad T42 Modem Daughter Board Replacement, Lower Bracket Removal: step 6, image 1 of 2 IBM ThinkPad T42 Modem Daughter Board Replacement, Lower Bracket Removal: step 6, image 2 of 2
    • The metal bracket will now be free to move, grasp it and remove it from the device.

  7. IBM ThinkPad T42 Modem Daughter Board Replacement, Remove the Microphone Cover: step 7, image 1 of 1
    • Remove the small rubber piece that is covering the T42's microphone,

  8. IBM ThinkPad T42 Modem Daughter Board Replacement, Daughterboard Unscrewing: step 8, image 1 of 1
    • Next, unscrew the 3 Phillips screws in red.

  9. IBM ThinkPad T42 Modem Daughter Board Replacement, Removing the Daughterboard: step 9, image 1 of 1
    • The cables are routed through different components for organization, carefully disconnect them, unwrap them and pull the card free.

  10. IBM ThinkPad T42 Modem Daughter Board Replacement, Remove Bracket: step 10, image 1 of 1
    • Lastly, remove the bracket sitting beneath it.

    • The end!

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To reassemble your device, follow these instructions in reverse order.

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Gerald Watanabe

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Cal Poly, Team 29-76, Johann Spring 2010 crwdns2886886:0Cal Poly, Team 29-76, Johann Spring 2010crwdne2886886:0

CPSU-JOHANN-S10S29G76

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