Description: Developing cartridge not installed The developing cartridge is not installed. Communication with the CRUM cannot be made in initial check of the CRUM.
Causes: Developing unit disconnection MCU PWB abnormality CRUM chip abnormality
Remedy: Check installation of the developing unit. Replace the MCU PWB.
Code: CH ON
Description: Side door open The side door is open.
Causes: Side door sensor abnormality MCU PWB abnormality
Remedy: Check that all the side doors are closed. Replace the MCU PWB.
Code: E1-00
Description: IMC PWB communication trouble An abnormality occurs in communication between the MCU PWB and the IMC PWB.
Remedy: Check connection of the connector and the harness between the IMC PWB and the MCU PWB. Check the ROM of the IMC PWB.
Code: E1-10
Description: IMC PWB trouble An abnormality occurs in the IMC PWB.
Causes: USB chip error/CODEC error on the IMC PWB
Remedy: Replace the IMC PWB with a new one.
Code: E1-11
Description: IMC ASIC error An abnormality occurs in the IMC PWB.
Causes: Abnormality in ASIC on the IMC PWB
Remedy: Replace the IMC PWB with a new one.
Code: E1-13
Description: IMC PWB flash ROM error An abnormality occurs in the IMC flash ROM.
Causes: IMC PWB abnormality
Remedy: Replace the IMC PWB with a new one. If downloading of the program is abnormally terminated, it may cause an error. Download the program again to avoid this.