- 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
Removing the coin-cell battery
CAUTION:The information in this section is intended for authorized service technicians only.
Prerequisites
- Follow the procedure in Before working inside your computer.
- Remove the nanoSIM card.
- Remove the base cover.
About this task
WARNING:Removing the coin-cell battery resets the BIOS setup program's settings to default. It is recommended that you note the BIOS setup program's settings before removing the coin-cell battery.
The following image(s) indicate the location of the coin-cell battery and provides a visual representation of the removal procedure.
Steps
- Disconnect the coin-cell battery cable from the system board.
- Remove the coin-cell battery cable from the routing guide on the palm-rest assembly.
- Peel the coin-cell battery, along with its cable, off the system board.
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