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Dell OptiPlex 7490 All-In-One - Coin-cell battery; Removing the coin-cell battery

Dell OptiPlex 7490 All-In-One
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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 shield.
2. Install the back cover.
3. Install the cable cover (optional).
4. Install the stand.
5. Follow the procedure in After working inside your computer.
Coin-cell battery
Removing the coin-cell battery
Prerequisites
1. Follow the procedure in Before working inside your computer.
2. Remove the stand.
3. Remove the cable cover (optional).
4. Remove the back cover.
5. Remove the system-board shield.
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 indicates the location of the coin-cell battery and provides a visual representation of the removal procedure.
Removing and installing components
37

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