Dell Latitude 7220 Rugged Extreme Tablet Service Manual - Page 23

Installing the display assembly

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Steps 1. Place the tablet on a flat and clean surface and remove the 19 (M2.5x5) screws that secure the display assembly to the chassis. 2. Flip the tablet. 3. Using a plastic scribe, gently pry the edges evenly to unlock the plastic clips that secure the display assembly to the chassis. NOTE: Tip of the plastic scribe should be inserted to avoid damage to the seal on the display assembly and to the clips that secure the display assembly to the chassis. 4. Flip the LCD panel by an angle less than 90°. NOTE: Ensure not to flip more than 90° angle, as the LCD panel ports and cables are connected to the system board and may damage the LCD cables. 5. Remove the adhesive tape and disconnect the eDP cable from the connector on the system board. 6. Remove the adhesive tape and disconnect the function key cable from the connector on the system board. 7. Using a plastic scribe, lift the latch and release the touch cable that is connected to the system board. Installing the display assembly Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. Removing and installing components 23

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Steps
1.
Place the tablet on a flat and clean surface and remove the 19 (M2.5x5) screws that secure the display assembly to the chassis.
2.
Flip the tablet.
3.
Using a plastic scribe, gently pry the edges evenly to unlock the plastic clips that secure the display assembly to the chassis.
NOTE:
Tip of the plastic scribe should be inserted to avoid damage to the seal on the display assembly and to the
clips that secure the display assembly to the chassis.
4.
Flip the LCD panel by an angle less than 90°.
NOTE:
Ensure not to flip more than 90° angle, as the LCD panel ports and cables are connected to the system board
and may damage the LCD cables.
5.
Remove the adhesive tape and disconnect the eDP cable from the connector on the system board.
6.
Remove the adhesive tape and disconnect the function key cable from the connector on the system board.
7.
Using a plastic scribe, lift the latch and release the touch cable that is connected to the system board.
Installing the display assembly
Prerequisites
If you are replacing a component, remove the existing component before performing the installation procedure.
Removing and installing components
23