Dell 23.8" OptiPlex 7410 All-in-One Desktop Computer (Gray) - Manual (Page 80)

Steps
1. Disconnect the power-supply fan cable (FAN SYS) from the system board.
2. Thread the power-supply fan cable under the I/O bracket and remove the power-supply fan cable from the routing guide on
the display-assembly base.
3. Remove the audio-board cable from the routing guides on the display-assembly base and the power-supply fan.
4. Remove the antenna cables from the routing guides on the display-assembly base and the power-supply fan.
5. Remove the two screws (M3x5) that secure the power-supply fan to the display-assembly base.
6. Lift the power-supply fan off the display-assembly base.
Installing the power-supply fan
Prerequisites
If you are replacing a component, remove the existing component before performing the installation process.
About this task
The following image(s) indicate the location of the power-supply fan and provides a visual representation of the installation
procedure.
80 Removing and installing Field Replaceable Units (FRUs)