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 heat sink with the screw holes on the system board.
2. Connect the system fan cable to the connector on the system board.
3. Tighten the four captive screws that secure the heat sink to the system board.
4. Replace the two screws (M2x5) that secures the heat sink to the system board.
Next steps
1. Install the battery.
2. Install the base cover.
3. Install the microSD card.
4. Install the SIM card.
5. Follow the procedure in After working inside your computer.
Speakers
Removing the speaker
Prerequisites
1. Follow the procedure in Before working inside your computer.
2. Remove the SIM card.
3. Remove the microSD card.
4. Remove the base cover.
5. Remove the battery.
About this task
The following images indicate the location of the speaker and provide a visual representation of the removal procedure.
Removing and installing components
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