1. Remove the controller board (PCB15) with the BiCU (PCB16) from the controller box.
  2. Remove the BiCU (PCB16) [A] from the controller board (PCB15) [B].
    IM 550F/600F/600SRF:

    P 800/801:
  3. Remove the NVRAM [A] from the old BiCU and attach it to the new BiCU.
    IM 550F/600F/600SRF:

    P 800/801:

    • Attaching the used NVRAM to the new BiCU (PCB16) allows users to use old data such as SP settings.
    • Make sure the serial number is input in the machine for the NVRAM data with SP5-811-004. If not, SC995-001 occurs. Install an NVRAM [A] so that the indentation [B] on the NVRAM corresponds with the mark on the BiCU (PCB16). Incorrect installation of the NVRAM will damage both the BiCU (PCB16) and NVRAM.