Service Manual
Table Of Contents
- Precision 3470 Service Manual
- Contents
- Working inside your computer
- Removing and installing components
- Recommended tools
- Screw list
- Major components of Precision 3470
- Micro Secure Digital (SD) Card
- Base cover
- Wireless card
- Solid-state drives
- Memory
- Battery
- Battery cable
- Assembly inner frame
- LED board
- Heat sink
- Speakers
- System board
- Power button with fingerprint reader
- Smart card reader
- Coin-cell battery
- Keyboard assembly
- Keyboard bracket
- Display assembly
- Display bezel
- Display panel
- Camera
- eDP/display cable
- Sensor board
- Display hinges
- Display back cover
- Dummy SIM-card slot filler
- Palm-rest assembly
- Drivers and downloads
- BIOS setup
- Troubleshooting
- Handling swollen Lithium-ion batteries
- Dell SupportAssist Pre-boot System Performance Check diagnostics
- Built-in self-test (BIST)
- System-diagnostic lights
- Recovering the operating system
- Real-Time Clock (RTC Reset)
- Auto RTC reset
- Backup media and recovery options
- WiFi power cycle
- Drain residual flea power (perform hard reset)
- Getting help and contacting Dell
6. Connect the touchpad cable to the system board and close the latch to secure the cable to the system board.
7. Connect the USH board cable to the system board and close the latch to secure the cable to the system board.
8. Connect the touch screen cable from the connector on the system board (for models shipped with a touch screen).
9. Connect IR camera cable from the connector on the system board (for models shipped with an IR camera).
10. Route the display and eDP/display cable through the routing guide on the system board.
11. Connect the eDP/display cable to the connector on the system board.
12. Connect the display cable to the connector on the system board.
13. Adhere the tape that secures the display cable to the system board.
14. Align the screw holes on the eDP/display cable bracket with the screw holes on the system board.
15. Replace the two (M2x3) screws that secure the eDP/display cable bracket to the system board.
Next steps
1. Install the heat sink.
2. Install the assembly inner frame.
3. Install the battery.
4. Install the wireless card.
5. Install the 2280 solid-state drive or 2230 solid-state drive.
6. Install the base cover.
7. Install the microSD card.
8. Follow the procedure in After working inside your computer.
Power button with fingerprint reader
Removing the power button
Prerequisites
1. Follow the procedure in Before working inside your computer.
2. Remove the microSD card.
3. Remove the base cover.
4. Remove the 2280 solid-state drive or 2230 solid-state drive.
5. Remove the memory modules.
6. Remove the battery.
7. Remove the wireless card.
8. Remove the heat sink heat sink.
9. Remove the assembly inner frame.
10. Remove the system board.
NOTE:
The system board can be removed with the heat sink attached in order to simplify the procedure and preserve
the thermal bond between the system board and heat sink.
About this task
The following image indicates the location of the power-button board and provide a visual representation of the removal
procedure.
Removing and installing components
49