Error Code: C-4643 Follow

Classification
Main body: IDC sensor/Rr (C) abnormality

Cause
The histogram processing of the C toner has terminated abnormally on the IDC sensor/Rr (IDCS2).

Measures to take when an alert occurs
The main body and the option stop immediately.

Estimated abnormal parts
• Printer control board
• IDC sensor/Rr (IDCS2)
• IDC sensor shutter solenoid (SD4)
• Intermediate transfer belt

Solution
1. Output the test pattern. Check whether the uneven density occurs on the C toner area.
2. Check the intermediate transfer belt, and clean or replace it when there is toner image or damage.
3. Check the connector connection between PRCB and IDCS2, SD4, and the wiring. Then repair it when there is any abnormality.
4. Perform a visual check and IO Check (36-04) of IDCS2, IO Check (55-00) of SD4, and repair or replace it when there is any abnormality.
Note
▪ The output check on the IO check mode has restrictive conditions. Check the IO check mode list before the output check.
5. Replace SD4.
6. Replace IDCS2.
7. Replace PRCB.