Dell Inspiron 14 5420 Service Manual - Page 40

Installing the I/O board

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Installing the I/O board Prerequisites If you are replacing a component, remove the existing component before performing the installation process. About this task The following image(s) indicate the location of the I/O board and provides a visual representation of the installation procedure. Steps 1. Align the ports on the I/O board to the slots on the palm-rest and keyboard assembly. 2. Place the I/O board on the palm-rest and keyboard assembly. 3. Align the screw hole on the I/O board to the screw hole on the palm-rest and keyboard assembly. 4. Replace the screw (M2x3) that secures the I/O board to the palm-rest and keyboard assembly. 5. Close the left display hinge and align the screw holes on the left display hinge with the screw holes on the I/O board. 6. Replace the two screws (M2.5x4) that secure the left display hinge to the I/O board. 7. Connect the I/O-board cable to the connector on the I/O board and close the latch. 8. Connect the power button with fingerprint-reader cable to the connector on the I/O board and close the latch. NOTE: This step is only applicable for computers shipped with the optional fingerprint reader. 9. Connect the coin-cell battery cable to the I/O board. Next steps 1. Install the display assembly. 2. Install the base cover. 3. Exit Service Mode. 4. Follow the procedure in After working inside your computer. 40 Removing and installing components

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Installing the I/O board
Prerequisites
If you are replacing a component, remove the existing component before performing the installation process.
About this task
The following image(s) indicate the location of the I/O board and provides a visual representation of the installation procedure.
Steps
1.
Align the ports on the I/O board to the slots on the palm-rest and keyboard assembly.
2.
Place the I/O board on the palm-rest and keyboard assembly.
3.
Align the screw hole on the I/O board to the screw hole on the palm-rest and keyboard assembly.
4.
Replace the screw (M2x3) that secures the I/O board to the palm-rest and keyboard assembly.
5.
Close the left display hinge and align the screw holes on the left display hinge with the screw holes on the I/O board.
6.
Replace the two screws (M2.5x4) that secure the left display hinge to the I/O board.
7.
Connect the I/O-board cable to the connector on the I/O board and close the latch.
8.
Connect the power button with fingerprint-reader cable to the connector on the I/O board and close the latch.
NOTE:
This step is only applicable for computers shipped with the optional fingerprint reader.
9.
Connect the coin-cell battery cable to the I/O board.
Next steps
1.
Install the
display assembly
.
2.
Install the
base cover
.
3.
Exit
Service Mode
.
4.
Follow the procedure in
After working inside your computer
.
40
Removing and installing components