Latitude 7455 Owner's Manual

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Removing the I/O-board FPC cable (for computers shipped with WWAN support)

CAUTION:The information in this removal section is intended for authorized service technicians only.
NOTE:The information in this removal section is only applicable for computers that are shipped with WWAN support.

Prerequisites

  1. Follow the procedure in Before working inside your computer.
  2. Remove the SIM card, if applicable.
  3. Remove the base cover.

About this task

The following images indicate the location of the I/O-board FPC cable and provide a visual representation of the removal procedure.
Figure 1. Removing the I/O-board FPC cable
Image: Removing the I/O board FPC cable

Steps

  1. Using the pull tab, disconnect the I/O-board cable from the connector (JIO1) on the system board.
  2. Remove the I/O-board cable from the routing guides on the palm-rest and keyboard assembly.
  3. Remove the screw (M2x2.5) that secures the WLAN-thermal shield to the system board.
  4. Slide the WLAN-thermal shield to the left and lift the shield off the system board.
  5. Disconnect the WLAN-antenna cables from the connectors (B and W) on the WLAN-antenna module.
  6. Remove the WLAN-antenna cables from the routing guides on the palm-rest and keyboard assembly.
  7. Remove the I/O-board FPC cable from the routing guide beneath the coin-cell battery.
  8. Peel off the coin-cell battery from the I/O-board FPC cable.
  9. Open the latch and disconnect the I/O-board FPC cable from the connector (JWWAN1) on the I/O board.
  10. Open the latch and disconnect the other end of the I/O-board FPC cable from the connector (JWWAN1) to the system board.
  11. Lift the I/O-board FPC cable off the computer.
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