Code :

Code: C-2413
Description: TCR sensor (TCRS) output abnormality 3.
Causes: • TCR sensor (TCRS) • Printer control board (PRCB)
Remedy: 1. Check the TCRS, and clean/replace it if any abnormality or dirt on sensor (Wiring diagram: Main body (3/4): 20-I) 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 TCRS, and repair it if any abnormality. 4. Replace TCRS. 5. Replace PRCB.

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. (Wiring diagram: Main body (3/4): 22-K). 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/replace it if any abnormality. (Wiring diagram: Main body (2/4): 3-N) 5. Replace HV2.

Code: C-2704
Description: 24V high voltage power abnormality. An error detection signal (blowout of ICP) of 24V high voltage power is detected. At this time, the main door detection and the PFU door detection are Close.
Causes: • High voltage unit /2 (HV2) • ADU drive board (ADUDB)
Remedy: 1. Check the connector connection and the wiring between ADUDB and HV2, and repair/replace it if any abnormality. 2. 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. (Wiring diagram: Main body (3/4): 21-K) 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. (Wiring diagram: Main body (3/4): 18-I) Be sure to clean TCB with alcohol, otherwise replacement of TCB is required. 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. (Wiring diagram: Main body (3/4): 18-I) Be sure to clean TCB with alcohol, otherwise replacement of TCB is required. 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.(Wiring diagram: Main body (3/4): 16-P) 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 (Dmax), 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. (Wiring diagram: Main body (3/4): 18-I) Be sure to clean TCB with alcohol, otherwise replacement of TCB is required. 2. Check the LPH section, and clean/repair it if any dirt or abnormality. (Wiring diagram: Main body (4/4): 17-A) 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.