Heat Sink; Removing The Heat Sink-Uma - Dell OptiPlex 7490 All-In-One Service Manual

Steps
1. Align the screw holes on the PSU fan with the screw holes on the display-assembly base.
2. Replace the two screws (M3x5) to secure the PSU fan to the display-assembly base.
3. Connect the PSU-fan cable to the connector on the system board.
4. Route the power-supply cable through the routing guides on the PSU fan.
Next steps
1. Install the bottom cover.
2. Install the system-board
3. Install the back cover.
4. Install the cable cover
5. Install the stand.
6. Follow the procedure in

Heat sink

Removing the heat sink—UMA
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
6. Remove the system fan.
52 Removing and installing components
shield.
(optional).
After working inside your
Before working inside your
(optional).
shield.
computer.
computer.