Dell OptiPlex All-in-One Plus 7420 - Fan; Removing the fan

Fan
Removing the fan
Prerequisites
1. Follow the procedure in Before working inside your computer.
2. Remove the stand.
3. Remove the back cover.
4. Remove the system-board shield.
About this task
The following image indicates the location of the fan and provides a visual representation of the removal procedure.
Figure 47. Removing the fan
Steps
1. Press and hold the securing clip and disconnect the processor-power cable from its connector (ATX CPU) on the system
board.
2. Remove the processor-power cable from the routing guide on the display-assembly base.
3. Lift the processor-power cable from the system board to access the fan cable.
4. Remove the three screws (M3x5) that secure the fan to the display-assembly base.
5. Disconnect the fan cable from its connector (CPU FAN) on the system board.
6. Lift the fan off the display-assembly base.
74
Removing and installing Customer Replaceable Units (CRUs)