- Notes, cautions, and warnings
- Working inside your computer
- Removing and installing components
- Recommended tools
- Screw list
- Major components of Latitude 3340
- Base cover
- Battery
- Battery cable
- M.2 solid state drive
- Wireless card
- Fan
- Coin-cell battery
- Display assembly
- I/O board
- Power-button board
- Power button with optional fingerprint reader
- Touchpad
- Power-adapter port
- Speakers
- Heat sink
- System board
- Palm-rest and keyboard assembly
- Drivers and downloads
- BIOS Setup
- Troubleshooting
- Handling swollen rechargeable Li-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)
- Backup media and recovery options
- Wi-Fi power cycle
- Drain residual flea power (perform hard reset)
- Getting help and contacting Dell
Latitude 3340/Latitude 3340 2-in-1 Service Manual
Removing the I/O board
Prerequisites
- Follow the procedure in Before working inside your computer.
- Remove the base cover.
About this task
The following images indicate the location of the I/O board and provide a visual representation of the removal procedure.
CAUTION:The system has a coin-cell battery that is connected to the I/O board. Disconnecting the I/O board cable resets the BIOS setup program settings to default. Note the BIOS setup program settings before disconnecting the I/O board cable.
Steps
- Remove the two screws (M2.5x4) that secure the left display hinge to the system.
- Lift the left display hinge in upward direction away from the system.
- Open the latch and disconnect the I/O-board cable from the connector on the I/O board.
- Disconnect the coin-cell battery cable from the connector on the I/O board.
- Disconnect the fingerprint reader flexible printed circuits from the connector on the I/O board.
NOTE:This procedure applies only to systems shipped with a power button with fingerprint reader installed.
- Remove the two screws (M2x3) that secure the I/O board to the palm-rest and keyboard assembly.
- Lift the I/O board off the palm-rest and keyboard assembly.
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