Dell OptiPlex 5270 All-in-One Service Manual

Removing the power supply unit -PSU

1. Follow the procedure in Before working inside your computer.
2. Remove the following components:
   1. Stand
   2. Back cover
   3. System board shield
   4. Base cover
3. To release the PSU cable:
   1. Remove the single (M3x5) screw securing the power supply socket to the I/O bracket [1].
   2. Slide the power supply socket away to remove it from the system [2].
   3. Unroute the power supply cables from the retention clips in the chassis [3].
   4. Disconnect the power supply cable from the socket on the system board [4].
      NOTE Press the clip downward to release the power supply cable from the system board.
      
4. To remove the PSU:
   1. Remove the single (M3x5) screw that secures the PSU to the display assembly base [1] and then slide the PSU forward [2].
      
   2. Slide the PSU, and lift it away from the chassis .