Dell Latitude 5550 Owners Manual - Page 138

Installing the palm-rest assembly

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Installing the palm-rest assembly CAUTION: The information in this installation section is intended for authorized service technicians only. Prerequisites If you are replacing a component, remove the existing component before performing the installation process. About this task The following image indicates the location of the palm-rest assembly and provides a visual representation of the installation procedure. Figure 101. Installing the palm-rest assembly Steps Place the palm-rest assembly on a flat surface. Next steps 1. Install the fingerprint reader, if applicable. 2. Install the smart card reader. 3. Install the display assembly. 4. Install the system board. NOTE: The system board can be removed and installed with the heat sink attached in order to simplify the procedure and preserve the thermal bond between the system board and heat sink. 5. Install the assembly inner frame. 6. Install the battery. 7. Install the heat sink (discrete GPU) or heat sink (integrated GPU), as applicable. 8. Install the M.2 2230 SSD in slot 2, if applicable. 9. Install the M.2 2230 or M.2 2280 SSD in slot 1, as applicable. 10. Install the memory modules. 11. Install the wireless card. 12. Install the 4G WWAN card or 5G WWAN card, as applicable. 138 Removing and installing Field Replaceable Units (FRUs)

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Installing the palm-rest assembly
CAUTION:
The information in this installation section is intended for authorized service technicians only.
Prerequisites
If you are replacing a component, remove the existing component before performing the installation process.
About this task
The following image indicates the location of the palm-rest assembly and provides a visual representation of the installation
procedure.
Figure 101. Installing the palm-rest assembly
Steps
Place the palm-rest assembly on a flat surface.
Next steps
1.
Install the
fingerprint reader
, if applicable.
2.
Install the
smart card reader
.
3.
Install the
display assembly
.
4.
Install the
system board
.
NOTE:
The system board can be removed and installed with the heat sink attached in order to simplify the procedure
and preserve the thermal bond between the system board and heat sink.
5.
Install the
assembly inner frame
.
6.
Install the
battery
.
7.
Install the
heat sink (discrete GPU)
or
heat sink (integrated GPU)
, as applicable.
8.
Install the
M.2 2230
SSD in slot 2, if applicable.
9.
Install the
M.2 2230
or
M.2 2280
SSD in slot 1, as applicable.
10.
Install the
memory modules
.
11.
Install the
wireless card
.
12.
Install the
4G WWAN card
or
5G WWAN card
, as applicable.
138
Removing and installing Field Replaceable Units (FRUs)