Dell Inspiron 14 Plus 7420 Service Manual - Page 43

System board, Removing the system board

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Steps 1. Align the screw hole on the power button with optional fingerprint reader with the screw hole on the palm-rest and keyboard assembly. 2. Replace the screw (M2x3) that secures the power button with optional fingerprint reader to the palm-rest and keyboard assembly. 3. Connect the fingerprint-reader cable to the I/O board and close the latch. 4. Adhere the tape that secures the fingerprint-reader cable to the palm-rest and keyboard assembly. 5. Adhere the Mylar over the fingerprint-reader cable. Steps 3 to 5 are applicable to computers shipped with a fingerprint reader. Next steps 1. Install the power-button board. 2. Install the display assembly. 3. Install the left fan. 4. Install the heat sink. 5. Install the base cover. 6. Follow the procedure in After working inside your computer. System board Removing the system board Prerequisites 1. Follow the procedure in Before working inside your computer. NOTE: Ensure that your computer is in Service Mode. For more information see, step 6 in Before working inside your computer. 2. Remove the base cover. 3. Remove the battery. 4. Remove the memory module. 5. Remove the M.2 2230 solid-state drive or the M.2 2280 solid-state drive. Removing and installing components 43

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Steps
1.
Align the screw hole on the power button with optional fingerprint reader with the screw hole on the palm-rest and keyboard
assembly.
2.
Replace the screw (M2x3) that secures the power button with optional fingerprint reader to the palm-rest and keyboard
assembly.
3.
Connect the fingerprint-reader cable to the I/O board and close the latch.
4.
Adhere the tape that secures the fingerprint-reader cable to the palm-rest and keyboard assembly.
5.
Adhere the Mylar over the fingerprint-reader cable.
Steps 3 to 5 are applicable to computers shipped with a fingerprint reader.
Next steps
1.
Install the
power-button board
.
2.
Install the
display assembly
.
3.
Install the
left fan
.
4.
Install the
heat sink
.
5.
Install the
base cover
.
6.
Follow the procedure in
After working inside your computer
.
System board
Removing the system board
Prerequisites
1.
Follow the procedure in
Before working inside your computer
.
NOTE:
Ensure that your computer is in Service Mode. For more information see, step 6 in
Before working inside your
computer
.
2.
Remove the
base cover
.
3.
Remove the
battery
.
4.
Remove the
memory module
.
5.
Remove the
M.2 2230 solid-state drive
or the
M.2 2280 solid-state drive
.
Removing and installing components
43