• Turn off the main power switch and unplug the power cord before replacing the PSU (PCB18).
  • Do not touch the areas outlined in red in the following diagrams when replacing the PSU (PCB18). Residual charge on the board may cause electric shock.

  1. Remove the controller box (IM 550F/600F/600SRF: Controller Box (IM 550F/600F/600SRF), P 800/801: Controller Box (P 800/801))
  2. Remove the PSU fan. (PSU Fan (FAN3))

  3. Remove the ground screw [A] and release the three connectors.

    • When installing, route the harnesses [A] and [B] through the hole in the bracket as shown below.

  4. Disconnect the two connectors.
  5. Remove the PSU (PCB18) [A] and bracket [B] from the mainframe.
  6. Remove the PSU (PCB18) [A] from the bracket [B].