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
Removing and installing components
NOTE: The images in this document may differ from your computer depending on the configuration you ordered.
Topics:
• Recommended tools
• Screw list
• Disassembly and reassembly
Recommended tools
The procedures in this document may require the following tools:
● Phillips screwdriver #0
●
Plastic scribe
Screw list
NOTE:
When removing screws from a component, it is recommended to note the screw type, the quantity of screws, and
then place them in a screw storage box. This is to ensure that the correct number of screws and correct screw type is
restored when the component is replaced.
NOTE: Some systems have magnetic surfaces. Ensure that the screws are not left attached to such surface when
replacing a component.
NOTE: Screw color may vary with the configuration ordered.
Table 1. Latitude 5420 screw list
Component Screw type Quantity Screw image
Base cover Captive screws 8 N/A
WLAN card Captive screws 1 N/A
WWAN card M2x2.5 1
M.2 2230 solid-state drive M2x3 4
M.2 2280 solid-state drive M2x3 2
Assembly inner frame M2x3
M2x5
7
3
3-cell battery M2x5 2
3
14 Removing and installing components