Dell Latitude 7340 Service Manual - Page 55

Power button with optional fingerprint reader

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Steps 1. Slide and replace the WLAN-antenna module to the WLAN-antenna module slot on the system board. 2. Route the WLAN-antenna cables from the routing guides on the system board. 3. Replace the four screws (M2x2.5) that secure the WLAN-antenna module bracket on the system board. Next steps 1. Install the system board. 2. Install the 2-cell battery or the3-cell battery, whichever is applicable. 3. Install the heat sink. 4. Install the WWAN card. 5. Install the M.2 SSD. 6. Install the base cover. 7. Follow the procedure in After working inside your computer. Power button with optional fingerprint reader Removing the power button with optional fingerprint reader Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the base cover. 3. Remove the WWAN card. 4. Remove the heat sink. 5. Remove the system board. About this task NOTE: When removing the system board to replace or access other parts, the system board can be removed and installed with the heat sink attached to simplify the procedure and preserve the thermal bond between the system board and heat sink. Removing and installing components 55

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Steps
1.
Slide and replace the WLAN-antenna module to the WLAN-antenna module slot on the system board.
2.
Route the WLAN-antenna cables from the routing guides on the system board.
3.
Replace the four screws (M2x2.5) that secure the WLAN-antenna module bracket on the system board.
Next steps
1.
Install the
system board
.
2.
Install the
2-cell battery
or the
3-cell battery
, whichever is applicable.
3.
Install the
heat sink
.
4.
Install the
WWAN card
.
5.
Install the
M.2 SSD
.
6.
Install the
base cover
.
7.
Follow the procedure in
After working inside your computer
.
Power button with optional fingerprint reader
Removing the power button with optional fingerprint reader
Prerequisites
1.
Follow the procedure in
Before working inside your computer
.
2.
Remove the
base cover
.
3.
Remove the
WWAN card
.
4.
Remove the
heat sink
.
5.
Remove the
system board
.
About this task
NOTE:
When removing the system board to replace or access other parts, the system board can be removed and installed
with the heat sink attached to simplify the procedure and preserve the thermal bond between the system board and heat
sink.
Removing and installing components
55