Coin-Cell Battery; Removing The Coin-Cell Battery - Dell OptiPlex 7780 All-In-One Service Manual

Steps
1. Align the screw holes on the system fan with the screw holes on the display-assembly base.
2. Replace the three screws (M3x5) to secure the system fan to the display-assembly base.
3. Connect the system-fan cable to the connector on the system board.
Next steps
1. Install the system-board
2. Install the back cover.
3. Install the cable cover (optional).
4. Install the stand.
5. Follow the procedure in

Coin-cell battery

Removing the coin-cell battery

Prerequisites
1. Follow the procedure in
2. Remove the stand.
3. Remove the cable cover
4. Remove the back cover.
5. Remove the system-board
NOTE: Removing the coin-cell battery resets the CMOS and BIOS settings to default and results in data lose. It is
recommended that you note the CMOS and BIOS settings before removing the coin-cell battery.
About this task
The following image provides a visual representation of the coin-cell battery removal procedure.
shield.
After working inside your computer.
Before working inside your
(optional).
shield.
computer.
Removing and installing components 35