• Code: C-2701
• Description: A charge leak is detected. After a charge EM signal abnormality is detected while in the charge ON, up to 5 charge ON/OFF operations occur in succession while in 10 prints.
• Causes: Charging corona High voltage unit /1 (HV1)
• Remedy: 1 Clean the power feed section for the charger. - 2 Check the charger (charging wire and the grid), and clean/repair it if there is any dirt or abnormality. - 3 Check the connector connection and the wiring between HV1 and the charger, and repair it if any abnormality. 18-G 4 Replace HV1.

• Code: C-2702
• Description: A transfer leak is detected. After a transfer EM signal abnormality is detected while in the charge ON, up to 5 transfer ON/OFF operations occur in succession while in 10 prints.
• Causes: Transfer roller High voltage unit /2 (HV2)
• Remedy: 1 Check the transfer roller section, and clean/repair it if there is sensor dirt or any abnormality. - 2 Clean the power feed section for the transfer roller. - 3 Check the transfer roller pressure section, and clean/repair it if there is sensor dirt or any abnormality. - 4 Check the connector connection and the wiring between HV2 and the power feed section, and repair it if any abnormality. 13-O 5 Replace HV2.

• Code: C-2704
• Description: High voltage power/multi feed detection 24V power abnormality. A high voltage power 24V or multi feed detection 24V error detection signal (blowout of ICP) is detected. At this time, the main door detection and the PFU door detection are Close.
• Causes: Multi feed detection board /S (MFDBS) Multi feed detection board /R (MFDBR) High voltage unit /2 (HV2) ADU drive board (ADUDB)
• Remedy: 1 Check the connector connection and the wiring between ADUDB and MFDBS/ MFDBR, and repair/replace it if any abnormality. - 2 Check the connector connection and the wiring between ADUDB and HV2, and repair/replace it if any abnormality. - 3 Replace ADUDB and HV2 at a time.

• Code: C-2705
• Description: PCC leak is detected. After a PCC EM signal abnormality is detected while in the PCC ON, up to 5 transfer ON/OFF operations occur in succession while in 10 prints.
• Causes: PCC unit High voltage unit /3 (HV3)
• Remedy: 1 Check the discharging wire of the PCC unit and replace it if the wire is cut. - 2 Check the installation condition of the PCC unit and install it again if any abnormality. - 3 Check the connector connection and the wiring between HV3 and the power feed section, and repair/replace it if any abnormality. 18-F 4 Replace HV3.

• Code: C-2801
• Description: IDC sensor (TCB) dirt correction abnormality. While in the maximum density correction (Dmax), the IDC sensor (TCB) dirt correction abnormality is detected 10 times in succession.
• Causes: Toner control board (TCB) Printer control board (PRCB)
• Remedy: 1 Check TCB, and clean it with alcohol if there is IDC sensor dirt or any abnormality. Be sure to clean TCB with alcohol, otherwise replacement of TCB is required. 17-F 2 Check the developing section, and clean/repair it if there is sensor dirt or any abnormality. - 3 Check the connector connection and the wiring between PRCB and TCB, and repair it if any abnormality. - 4 Replace TCB. - 5 Replace PRCB.

• Code: C-2802
• Description: The maximum density correction (Dmax) is not completed. While in Dmax, the number of rotations of the developing sleeve gets to the maximum.
• Causes: Developing motor (M3) Toner control board (TCB) Printer control board (PRCB)
• Remedy: 1 Check TCB, and clean it with alcohol if there is IDC sensor dirt or any abnormality. Be sure to clean TCB with alcohol, otherwise replacement of TCB is required. 17-F 2 Check the connector connection and the wiring between PRCB and TCB, and repair it if any abnormality. - 3 Check the I/O drive of the motor and the coupling of the gear, and clean/repair/ replace it if any abnormality. 18-K 4 Replace TCB. - 5 Replace M3. - 6 Replace PRCB.

• Code: C-2803
• Description: The IDC sensor (TCB) output abnormality. While in the maximum density correction, a patch for control is not output. (No output is made from the gamma sensor.)
• Causes: Toner control board (TCB) LPH board (LPHB) Overall control board (OACB) Image processing board (IPB)
• Remedy: 1 Check TCB, and clean it with alcohol if there is IDC sensor dirt or any abnormality. Be sure to clean TCB with alcohol, otherwise replacement of TCB is required. 17-F 2 Check the LPH section, and clean/replace it if there is LED dirt or any abnormality. 18-C 3 Check the connector connection and the wiring between OACB and IPB, and repair it if any abnormality. - 4 Check the connector connection and the wiring between LPHB and IPB, and repair it if any abnormality. - 5 Replace LPHB. - 6 Replace IPB. - 7 Replace OACB.

• Code: C-2804
• Description: The dirt correction of the IDC sensor is not completed
• Causes: Toner control board (TCB) Printer control board (PRCB)
• Remedy: 1 Check TCB, and clean it with alcohol if there is IDC sensor dirt or any abnormality. Be sure to clean TCB with alcohol, otherwise replacement of TCB is required. 17-F 2 Check the developing section, and clean/repair it if there is any dirt or abnormality. - 3 Check the connector connection and the wiring between PRCB and TCB, and repair it if any abnormality. - 4 Replace TCB. - 5 Replace PRCB.