- Notes, cautions, and warnings
- Views of Dell 14 Plus DB14250
- Set up your Dell 14 Plus DB14250
- Specifications of Dell 14 Plus DB14250
- Dimensions and weight
- Processor
- Chipset
- Operating system
- Memory
- External ports and slots
- Internal slots
- Wireless module
- Audio
- Storage
- Keyboard
- Keyboard function keys
- Camera
- Touchpad
- Power adapter
- Battery
- Display
- Fingerprint reader (optional)
- GPU—Integrated
- External display support
- Operating and storage environment
- ComfortView
- ComfortView Plus
- Working inside your computer
- Removing and installing Customer Replaceable Units (CRUs)
- Removing and installing Field Replaceable Units (FRUs)
- Software
- 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
- Network power cycle
- Drain flea power (perform hard reset)
- Getting help and contacting Dell
- Revision history
Dell 14 Plus DB14250 Owner's Manual
Removing the system board
CAUTION:The information in this section is intended for authorized service technicians only.
Prerequisites
- Follow the procedure in
Before working inside your computer. NOTE:Ensure that your computer is in Service Mode. For more information, see step 7 in Before working inside your computer.
- Remove the base cover.
- Remove the battery.
- Remove the M.2 2230 solid state drive.
- Remove the wireless card.
- Remove the heat sink.
- Remove the display assembly.
About this task
The following image indicates the connectors and M.2 card slot on your system board.
- Fan cable connector (FAN)
- Infrared camera cable connector (CIR)
- Display-assembly cable connector (LCD)
- M.2 solid state drive slot
- Keyboard-backlight cable connector (KBBL)
- Battery cable connector (BATT)
- Keyboard cable connector (KB)
- M.2 wireless-card slot (WLAN)
- Touchpad cable connector (TP)
- Speaker cables connector (SPK)
- I/O board-cable connector (IOBD)
The following images indicate the location of the system board and provide a visual representation of the removal procedure.
NOTE:The image shows the system board with the
heat sink removed.
Steps
- Peel the tape that secures the display-assembly cable to the latch on the system board.
- Remove the three screws (M2.5x4) that secure the display-assembly hinge to the system board.
- Pry open the display-assembly hinge to a 90-degree angle.
- Remove the two screws (M2x4) that secure the Type-C bracket to the system board.
- Lift the Type-C port bracket off the system board.
- Lift the latch and disconnect the infrared camera cable from the connector (CIR) on the system board.
- Lift the latch and disconnect the display-assembly cable from the connector (LCD) on the system board.
- Lift the latch and disconnect the keyboard-backlight cable from the connector (KBBL) on the system board.
- Lift the latch and disconnect the keyboard cable from the connector (KB) on the system board.
- Lift the latch and disconnect the touchpad cable from the connector (TP) on the system board.
- Disconnect the speaker cable from the connector (SPK) on the system board.
- Lift the latch and disconnect the I/O-board cable from the connector (IOBD) on the system board.
- Disconnect the fan cable from the connector (FAN) on the system board.
- Remove the two screws (M2x1.8) that secure the system board to the palm-rest and keyboard assembly.
- Lift the system board off the palm-rest and keyboard assembly.
NOTE:When removing the system board, carefully lift it at an angle to clear the positioning pin. Doing so minimizes the risk of damaging the system board.
Figure 5. Removing the system board without damaging it 
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