Dell Latitude 5550 Owners Manual - Page 137

Prerequisites, About this task, Steps, Removing the palm-rest assembly

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Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the SIM card. 3. Remove the base cover. 4. Remove the 4G WWAN card or 5G WWAN card, as applicable. 5. Remove the wireless card. 6. Remove the memory modules. 7. Remove the M.2 2230 or M.2 2280 SSD from slot 1, as applicable. 8. Remove the M.2 2230 SSD from slot 2, if applicable. 9. Remove the battery. 10. Remove the assembly-inner frame. 11. Remove the system board. NOTE: The system board can be removed with the heat sink attached in order to simplify the procedure and preserve the thermal bond between the system board and heat sink. 12. Remove the display assembly. 13. Remove the smart-card reader. 14. Remove the fingerprint reader, if applicable. About this task NOTE: When replacing the palm-rest assembly, transfer the dummy SIM filler to the new palm-rest assembly. The following image indicates the location of the palm-rest assembly and provides a visual representation of the removal procedure. Figure 100. Removing the palm-rest assembly Steps Remove all the components mentioned in the pre-requisites to get the palm-rest assembly. Removing and installing Field Replaceable Units (FRUs) 137

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Prerequisites
1.
Follow the procedure in
Before working inside your computer
.
2.
Remove the
SIM card
.
3.
Remove the
base cover
.
4.
Remove the
4G WWAN card
or
5G WWAN card
, as applicable.
5.
Remove the
wireless card
.
6.
Remove the
memory modules
.
7.
Remove the
M.2 2230
or
M.2 2280
SSD from slot 1, as applicable.
8.
Remove the
M.2 2230
SSD from slot 2, if applicable.
9.
Remove the
battery
.
10.
Remove the
assembly-inner frame
.
11.
Remove the
system board
.
NOTE:
The system board can be removed with the heat sink attached in order to simplify the procedure and preserve
the thermal bond between the system board and heat sink.
12.
Remove the
display assembly
.
13.
Remove the
smart-card reader
.
14.
Remove the
fingerprint reader
, if applicable.
About this task
NOTE:
When replacing the palm-rest assembly, transfer the dummy SIM filler to the new palm-rest assembly.
The following image indicates the location of the palm-rest assembly and provides a visual representation of the removal
procedure.
Figure 100. Removing the palm-rest assembly
Steps
Remove all the components mentioned in the pre-requisites to get the palm-rest assembly.
Removing and installing Field Replaceable Units (FRUs)
137