Dell Latitude 5550 Owners Manual - Page 106

Display assembly, Removing the display assembly

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Steps 1. Align and place the keyboard on the keyboard bracket. 2. Replace the ten screws (M2x2) to secure the keyboard to the keyboard bracket. 3. Turn the keyboard bracket over. 4. Align and place the keyboard bracket on the palm-rest assembly. 5. Replace the twenty-one screws (M2x2) that secure the keyboard bracket to the palm-rest assembly. 6. Connect the keyboard-backlight cable to the connector on the system board and close the latch to secure the cable. 7. Connect the keyboard cable to the connector on the system board and close the latch to secure the cable. Next steps 1. 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. 2. Install the assembly-inner frame. 3. Install the battery. 4. Install the M.2 2230 SSD in slot 2, if applicable. 5. Install the M.2 2230 or M.2 2280 SSD in slot 1, as applicable. 6. Install the memory modules. 7. Install the wireless card. 8. Install the 4G WWAN card or 5G WWAN card, as applicable. 9. Install the base cover. 10. Install the SIM card. 11. Follow the procedure in After working inside your computer. Display assembly Removing the display assembly CAUTION: The information in this removing section is intended for authorized service technicians only. 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. About this task The following images indicate the location of the display assembly and provide a visual representation of the removal procedure. 106 Removing and installing Field Replaceable Units (FRUs)

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Steps
1.
Align and place the keyboard on the keyboard bracket.
2.
Replace the ten screws (M2x2) to secure the keyboard to the keyboard bracket.
3.
Turn the keyboard bracket over.
4.
Align and place the keyboard bracket on the palm-rest assembly.
5.
Replace the twenty-one screws (M2x2) that secure the keyboard bracket to the palm-rest assembly.
6.
Connect the keyboard-backlight cable to the connector on the system board and close the latch to secure the cable.
7.
Connect the keyboard cable to the connector on the system board and close the latch to secure the cable.
Next steps
1.
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.
2.
Install the
assembly-inner frame
.
3.
Install the
battery
.
4.
Install the
M.2 2230
SSD in slot 2, if applicable.
5.
Install the
M.2 2230
or
M.2 2280
SSD in slot 1, as applicable.
6.
Install the
memory modules
.
7.
Install the
wireless card
.
8.
Install the
4G WWAN card
or
5G WWAN card
, as applicable.
9.
Install the
base cover
.
10.
Install the
SIM card
.
11.
Follow the procedure in
After working inside your computer
.
Display assembly
Removing the display assembly
CAUTION:
The information in this removing section is intended for authorized service technicians only.
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
.
About this task
The following images indicate the location of the display assembly and provide a visual representation of the removal procedure.
106
Removing and installing Field Replaceable Units (FRUs)