• Code: C0F36
• Description: Abnormally low toner density detected Black ATDC Sensor
  • T/C 3 % or less is detected ten consecutive times in the Developing Unit as validated through the toner replenishing amount determination control.
• Remedy: 1 Perform image troubleshooting procedure if image density is low. 2 M3 operation check PWB-MC PJ16MC-4A~7A (Pulse Output) 19-I. 3 Change Imaging Unit. 4 Change PWB-MC. 5 Change PWB-MFP.

• Code: C0F37
• Description: Abnormally high toner density detected Black ATDC Sensor
  • T/C 12 % or more is detected ten consecutive times in the Developing Unit as validated through the toner replenishing amount determination control.
• Remedy: 1 Correct the ATDC connection on the underside of the Imaging Unit if faulty. 2 Clean or correct each contact of the Imaging Unit if faulty. 3 Change Imaging Unit. 4 Change PWB-MC. 5 Change PWB-MFP.

• Code: C0F3A
• Description: Cyan ATDC Sensor adjustment failure
  • ATDC Sensor automatic adjustment does not function properly, failing to adjust to an appropriate value.
• Remedy: 1 Clean the ATDC Sensor window on the underside of the Imaging Unit if dirty 2 Clean the ATDC Sensor LED if dirty. 3 Correct the contact and/or WIRING of the ATDC Sensor if faulty. 4 Reinstall Imaging Unit C/M/Y. 5 M3, M4 operation check M3: PWB-MC PJ16MC-4A~7A (Pulse Output) M4: PWB-MC PJ16MC-10A~13A (Pulse Output) M3: 19-I M4: 19-J. 6 Change Imaging Unit. 7 Change PWB-MC. 8 Change PWB-MFP.

• Code: C0F3B
• Description: Magenta ATDC Sensor adjustment failure
• Remedy: 1 Clean the ATDC Sensor window on the underside of the Imaging Unit if dirty 2 Clean the ATDC Sensor LED if dirty. 3 Correct the contact and/or WIRING of the ATDC Sensor if faulty. 4 Reinstall Imaging Unit C/M/Y. 5 M3, M4 operation check M3: PWB-MC PJ16MC-4A~7A (Pulse Output) M4: PWB-MC PJ16MC-10A~13A (Pulse Output) M3: 19-I M4: 19-J. 6 Change Imaging Unit. 7 Change PWB-MC. 8 Change PWB-MFP.

• Code: C0F3C
• Description: Yellow ATDC Sensor adjustment failure
• Remedy: 1 Clean the ATDC Sensor window on the underside of the Imaging Unit if dirty 2 Clean the ATDC Sensor LED if dirty. 3 Correct the contact and/or WIRING of the ATDC Sensor if faulty. 4 Reinstall Imaging Unit C/M/Y. 5 M3, M4 operation check M3: PWB-MC PJ16MC-4A~7A (Pulse Output) M4: PWB-MC PJ16MC-10A~13A (Pulse Output) M3: 19-I M4: 19-J. 6 Change Imaging Unit. 7 Change PWB-MC. 8 Change PWB-MFP.

• Code: C0F3D
• Description: Black ATDC Sensor adjustment failure
• Remedy: 1 Correct the ATDC connection on the underside of the Imaging Unit if faulty. 2 Clean or correct each contact of the Imaging Unit if faulty. 3 Change Imaging Unit. 4 Change PWB-MC. 5 Change PWB-MFP.

• Code: C1200
• Description: Standard controller configuration failure
  • The controller of the MFP Control Board (PWB-MFP) is faulty.
• Remedy: 1 Check to see if the following setting has been correctly made: Tech. Rep. Mode - ?gSystem Input - Peripheral Setting. If the setting is changed, be sure to turn OFF and ON the Power Switch. 2 Check the connectors of the MFP Control Board (PWB-MFP) for proper connection and correct as necessary. 3 Change PWB-MFP.

• Code: C1203
• Description: File Memory mounting error
  • The File Memory mounted on the MFP Control Board (PWB-MFP) is faulty.
• Remedy: 1 Check to see if the standard memory (DIMMS0) on the MFP Control Board (PWB-MFP) is installed correctly. 2 Change the standard memory (DIMMS0) on the MFP Control Board (PWB-MFP). 3 Change PWB-MFP.