Installing The Palm-Rest And Keyboard Assembly - Dell Inspiron 15 3521 Service Manual

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6. Remove the
2.5-inch hard-disk
NOTE:
This procedure applies only to systems shipped with a 2.5-inch hard-disk drive installed.
7. Remove the
wireless
card.
8. Remove the speakers.
9. Remove the
3-cell battery
10. Remove the
display
assembly.
11. Remove the touchpad.
12. Remove the
I/O daughter-board flexible flat
13. Remove the
I/O
daughter-board.
14. Remove the
power-adapter
15. Remove the
power button
16. Remove the
system
board.
About this task
NOTE:
The system board can be removed with the system board thermal plate attached to it in order to simplify the
procedure and preserve the thermal bond between the system board and system board thermal plate.
NOTE:
The palm-rest and keyboard assembly cannot be further disassembled once all the pre-removal parts procedures
are completed. If the keyboard is malfunctioning and is required to be replaced, replace the entire palm-rest and keyboard
assembly.
The image below shows the palm-rest and keyboard assembly after the pre-removal parts procedures have been performed for
any palm-rest and keyboard assembly replacement.
Steps
After performing the pre-requisites, you are left with the palm-rest and keyboard assembly.

Installing the palm-rest and keyboard assembly

Prerequisites
If you are replacing a component, remove the existing component before performing the installation procedure.
drive, if applicable.
or the
4-cell
battery, whichever applicable.
cable.
port.
or the
power button with optional fingerprint
reader, whichever applicable.
Removing and installing components
83

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