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Precision 7770 Service Manual

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Removing the display assembly

Prerequisites

  1. Follow the procedure in before working inside your computer.
  2. Remove the base cover.
  3. Remove the SIM card.
  4. Remove the battery.
  5. Remove the CAMM module or memory module.
  6. Remove the interposer board module.
  7. Remove the WWAN card.
  8. Remove the primary solid-state drive.
  9. Remove the secondary solid-state drive.
  10. Remove the heat-sink for discrete graphics.
  11. Remove the inner frame.

About this task

The figure indicates the location of the display assembly and provides a visual representation of the removal procedure.

Removing the display assembly

Removing the display assembly

Removing the display assembly

Steps

  1. Remove the (M2x5) screw that secures the WLAN bracket to the system board.
  2. Lift to remove the WLAN bracket.
  3. Disconnect the antennas from their connectors.
  4. Remove the three (M2x5) screws that secure the display cable bracket in place.
  5. Remove the display cable bracket from the computer.
  6. Disconnect the touch screen cable (for models shipped with a touch screen) or IR camera cable (for models that are shipped with an IR camera) and display cable from their connectors on the system board.
  7. Open the display assembly to a 180-degree angle and place the computer at the edge of a flat table so that the display assembly can extend below the table.
    NOTE:For computers shipped with IR camera configuration, disconnect the display cable and IR camera cable.
  8. Remove the six (M2.5x5) screws that secure the hinges to the palmrest.
  9. Remove the display assembly from the palmrest.
    NOTE:The display assembly for Precision 7770 is a Hinge-Up Design (HUD) assembly and cannot be further disassembled once it is removed from the bottom chassis. If any components in the display assembly are malfunctioning and must be replaced, replace the entire display assembly.

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