- Notes, cautions, and warnings
- Views of Precision 3480
- Set up your Precision 3480
- Specifications of Precision 3480
- Dimensions and weight
- Processor
- Chipset
- Operating system
- Memory
- External ports
- Internal slots
- Ethernet
- Wireless module
- WWAN module
- Audio
- Storage
- Keyboard
- Keyboard function keys
- Camera
- Touchpad
- Power adapter
- Battery
- Display
- Fingerprint reader (optional)
- Sensor
- GPU—Integrated
- GPU—Discrete
- External display support
- Hardware security
- Smart-card reader
- Operating and storage environment
- Dell support policy
- ComfortView Plus
- Using the privacy shutter
- Dell Optimizer
- Working inside your computer
- Removing and installing Customer Replaceable Units (CRUs)
- Removing and installing Field Replaceable Units (FRUs)
- Battery
- Coin-cell battery
- Heat sink
- Removing the heat sink - for computers shipped with integrated graphics card
- Installing the heat sink - for computers shipped with integrated graphics card
- Removing the heat sink - for computers shipped with discrete graphics card
- Installing the heat sink - for computers shipped with discrete graphics card
- Speakers
- Assembly-inner frame
- Display assembly
- Display bezel
- Display panel
- Camera module
- Display hinges
- Display cable
- Display back cover
- System board
- Smart card reader
- Power-button board
- Keyboard
- Palm-rest assembly
- Dummy SIM-card slot filler
- Software
- BIOS Setup
- Troubleshooting
- Handling swollen rechargeable Li-ion batteries
- Locate the Service Tag or Express Service Code of your Dell computer
- 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)
- Backup media and recovery options
- Wi-Fi power cycle
- Drain residual flea power (perform hard reset)
- Getting help and contacting Dell
Precision 3480 Owner's Manual
Installing the power-button board
CAUTION:The information in this section is intended for authorized service technicians only.
Prerequisites
About this task
The following images indicate the location of the power-button board and provide a visual representation of the installation procedure.
Figure 1. Installing the power-button board 
Steps
- Align and place the power-button board on the palm-rest assembly.
- Replace the two (M2x2.5) screws to secure the power-button board to the palm-rest assembly.
Next steps
- Install the
system board.
NOTE:The system board can be removed and installed with the heatsink attached to simplify the procedure and preserve the thermal bond.
- Install the assembly inner frame.
- Install the speakers.
- Install the heat sink.
- Install the fan.
- Install the WWAN card.
- Install the wireless card.
- Install the M.2 2230 solid-state drive.
- Install the memory module.
- Install the battery.
- Install the base cover.
- Install the nanoSIM card.
- Follow the procedure in After working inside your computer.
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