• Code: C-C120
• Description: ISW write abnormality on DF. When the main power switch (SW1) is ON, unwritten area by the ISW is detected in the DF control program.
• Causes: • DF control board (DFCB) • Overall control board (OACB)
• Remedy: 1. Check the connector connection and the wiring between the main body and DF, and repair it if any abnormality. 2. Reinstalling DF firmware 3. Replace DFCB 4. Replace OACB.

• Code: C-C121
• Description: When the sub power switch (SW2) turns ON, ISW unwritten area is detected in the LS firmware (3rd tandem).
• Causes: • LSCB firmware • LS control board (LSCB)
• Remedy: 1. Reinstall the LSCB firmware. 2. Check the connector connection and the wiring between the main body and each option, and repair it if any abnormality. 3. Check the I/F connector connection and the wiring for ISW on RBU, and repair it if any abnormality. 4. Check the connector connection and the wiring between RBU and OACB, and repair it if any abnormality. 5. Replace LSCB.

• Code: C-C124
• Description: When the sub power switch (SW2) turns ON, ISW unwritten area is detected in the SD firmware.
• Causes: • Firmware of SD • SD control board (SDCB)
• Remedy: 1. Reinstalling SDCB firmware 2. Check the connector connection and the wiring between the main body and each option, and repair it if any abnormality. 3. Check the I/F connector connection and the wiring for ISW on RBU, and repair it if any abnormality. 4. Check the connector connection and the wiring between RBU and OACB, and repair it if any abnormality. 5. Replace SDCB.

• Code: C-C125
• Description: ISW write abnormality of controller. The firmware is not written on ICB or an error is detected during the ROM check.
• Causes: IC board (ICB)
• Remedy: 1. Check the I/F connector connection and the wiring for ISW on ICB, and repair it if any abnormality. 2. Reinstall the firmware related to the controller. 3. Replace ICB.

• Code: C-C130
• Description: Wrong serial number. The serial number for the different machine is specified.
• Causes:
• Remedy: 1. Specify the proper serial number.

• Code: C-C131
• Description: DF-615 is installed to PRO 951. Or, DF-615 is installed to PRESS1250/1052.
• Causes: DF
• Remedy: 1. Check DF, and repair it if any abnormality.

• Code: C-C132
• Description: The image processing board (IPB) used exclusively for PRESS1250/1250P/1052 is installed to PRO951. Or, IPB used exclusively for PRO951 is installed to PRESS1250/1250P/1052.
• Causes: Image processing board (IPB)
• Remedy: 1. Check that the proper IPB is installed, and replace it if the wrong one is installed. 2. Check the connector and the wiring connected to IPB, and repair it if any abnormality. 3. Replace IPB.

• Code: C-C136
• Description: When the version differs between Common API for the overall control and IC controller.
• Causes: • Overall control board (OACB) • IC board (ICB)
• Remedy: 1. Check the I/F connector connection and the wiring for ISW on ICB, and repair it if any abnormality. 2. Check the connector connection and the wiring between ICB and OACB, and repair it if any abnormality. (Wiring diagram: Main body (4/4): 21-D, Main body (1/4): 11-N) 3. Reinstall the firmware of the image control (I1) and the IC controler (P). 4. Replace ICB or OACB.