Service Manual
Table Of Contents
- Latitude 5420 Service Manual
- Contents
- Working inside your computer
- Major components of your computer
- Removing and installing components
- Recommended tools
- Screw list
- Disassembly and reassembly
- Subscriber Identity Module (SIM) card
- Micro Secure Digital (SD) Card
- Base cover
- WLAN card
- WWAN card
- Solid-state drive
- Memory modules
- Battery
- Battery cable
- Assembly inner frame
- LED board
- Heat sink
- Speakers
- System board
- Power-button board
- Smart card reader
- Keyboard assembly
- Keyboard bracket
- Display assembly
- Display bezel
- Display panel
- Camera/microphone module
- eDP/display cable
- Sensor board
- Display hinges
- Display back cover
- Dummy SIM-card slot filler
- Palm-rest assembly
- Software
- BIOS setup
- Troubleshooting
- Getting help and contacting Dell
Steps
1. Align the screw holes on the base cover with the screw holes on the palm-rest assembly and keyboard assembly, and then
snap the base cover into place.
2. Tighten the eight captive screws that secure the base cover to the palm-rest assembly and keyboard assembly.
Next steps
1. Install the microSD card.
2. Install the SIM card.
3. Follow the procedure in After working inside your computer.
WLAN card
Removing the WLAN card
Prerequisites
1. Follow the procedure in Before working inside your computer.
2. Enter service mode.
3. Remove the SIM card.
4. Remove the microSD card.
5. Remove the base cover.
About this task
The following images indicate the location of the WLAN card and provide a visual representation of the removal procedure.
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Removing and installing components