Dell OptiPlex 5270 All-in-One Service Manual

Installing the power supply unit -PSU fan

1. To install the PSU fan:
   1. Align and place the PSU fan on the chassis [1].
   2. Replace the two (M3x5) screws that secure the PSU fan to the display assembly base [2].
      
2. To replace the PSU Fan cable:
   1. Route the PSU fan cable through the retention tab [1].
   2. Connect the PSU fan cable to the socket on the system board [2].
   3. Route the power supply cables to the retention clips on the PSU fan.
      
3. Install the following components:
   1. Base cover
   2. System board shield
   3. Back cover
   4. Stand
4. Follow the procedure in After working inside your computer.