Error Code: C-4730 Follow

Code

C-4730

Classification

Main body: Out of register abnormality

Cause

VTOP signals are input twice or more for 1 page. Alternatively, input timing of the VTOP signal is not normal.

Measures to take when an alert occurs

The main body and the option stop immediately.

Estimated abnormal parts

• Wiring (AC57N104)
• Image processing board (IPB)
• Printer control board (PRCB)

Correction

Deactivate and activate the sub power switch (SW2) of the main body.

Note

• The message "Please call service" is displayed on the panel.

Solution

1. Execute the IO Check (99-70) of the board self-diagnosis. Check the results of IPB.
   • When the results are OK: Go on to the following steps.
   • When the result is NG: There is an abnormality in IPB or the connection. Go on to the step 5.
2. Prior check
   • Check that the CN5402 of IPB is correctly connected.
3. Check the connector connection between PRCB and IPB, CN107 of PRCB, and the wiring. Then repair it when there is any abnormality.
4. Replace the wiring.
5. Replace IPB.
6. Replace PRCB.

Faulty part isolation DIPSW

Control during the detachment