1. IM 550F/600F/600SRF: Remove the right lower cover. (Right Lower Cover)
    P 800/801: Remove the right cover. (Right Cover)
  2. Disconnect the connector of the PSU fan (FAN3) [A] from the right side of the machine.
  3. Release the hook [A] by lifting the fan bracket [B]. (hook×1)
  4. Remove the PSU fan (FAN3) with the bracket [A]. (hook×2)
  5. Remove the PSU fan (FAN3) [A] from the bracket. (hook×3)