Code :

Code: C-4708
Description: Expansion device access abnormality. When accessing to the memory device, a defective software is detected.
Causes: Image processing board (IPB)
Remedy: 1. Check the connector connection and the wiring on IPB, and repair it if any abnormality. 2. Rewrite the firmware for image control. 3. Replace IPB.

Code: C-4709
Description: Memory time out.
Causes: • Overall control board (OACB) • Printer control board (PRCB) • Image processing board (IPB)
Remedy: 1. Check the connector connection and the wiring on IPB and OACB, and repair it if any abnormality. 2. Check the connector connection and the wiring on PRCB, and repair it if any abnormality. 3. Check the connector connection and the wiring between IPB and OACB/between OACB and PRCB, and repair it if any abnormality. 4. Rewrite the firmware for image control. 5. Replace IPB. 6. Replace OACB. 7. Replace PRCB.

Code: C-4720
Description: Shift amount abnormality while in the repeat. When the shift amount (used for cutting margin, etc.) while in the repeat is negative (-).
Causes: Image processing board (IPB)
Remedy: 1. Check the connector connection and the wiring on IPB, and repair it if any abnormality. 2. Rewrite the firmware for image control. 3. Replace IPB.

Code: C-4721
Description: The Centering Adjustment is too late. The print operation starts before the paper centering adjustment is terminated. (The Centering Adjustment is too late)
Causes: • Printer control board (PRCB) • ADU drive board (ADUDB)
Remedy: 1. Check the connector connection and the wiring on ADUCB and PRCB, and repair it if any abnormality. 2. Replace PRCB. 3. Replace ADUDB.

Code: C-4722
Description: The creation of the PWM gamma curve failed. A PWM gamma curve is not created properly.
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. 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-4725
Description: LPH board (LPHB) connection abnormality. Due to the disconnection of the LPHB connector, no connection is available with the overall control board.
Causes: • LPH board (LPHB) • Relay board /A (RBA) • Image processing board (IPB)
Remedy: 1. Check the connector connection and the wiring between LPHB and RBA, and repair it if any abnormality. 2. Check the connector connection and the wiring between IPB and RBA, and repair it if any abnormality. 3. Check LPHB, and repair/replace it if any abnormality. (Wiring diagram: Main body (4/4): 17-A) 4. Rewrite the firmware for image control. 5. Replace LPHB. 6. Replace RBA. 7. Replace IPB.

Code: C-4850
Description: Segmentation abnormality. The overall control software accesses an illegal address.
Causes: Image processing board (IPB)
Remedy: 1. Check the connector connection and the wiring on IPB, and repair it if any abnormality. 2. Rewrite the firmware for image control. 3. Replace IPB.

Code: C-5010
Description: Communication error between the overall control board (OACB) and the printer control board (PRCB). Any of the following error is detected during data reception between OACB and PRCB.
Causes: • Printer control board (PRCB) • Overall control board (OACB)
Remedy: 1. After turning OFF the sub power switch, turn OFF the main power switch and unplug the power plug. Restart the main body after 10 seconds. 2. Check the connector connection and the wiring on OACB, and repair it if any abnormality. 3. Check the connector connection and the wiring on PRCB, and repair it if any abnormality. 4. Check the connector connection and the wiring between OACB and PRCB, and repair it if any abnormality. 5. Replace OACB. 6. Replace PRCB.