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Confidential
■ Error code 9803
Density patch measurement ended unsuccessfully during color density adjustment performed
from the control panel.
Error code 9804
Error occurred with the value measured during density sensor sensitivity calibration.
< User Check >
- Check if the toner cartridges are set in the correct order of colors.
- Replace the toner cartridge.
- Replace the drum unit.
- If the belt unit has a scratch, replace it.
- If “WT Box End Soon” is displayed on the LCD and the belt unit has dirt, replace the waste
toner box.
Calibration
Calibration failed. Press [Retry], and try again.
Calibration
Calibration failed. Press [Retry], and try again.
Step Cause Remedy
1 Dirt on the registration mark
sensor L
Clean the registration mark sensor L.
2 Failure in printed measurement
pattern image
If failure occurs when printing “2D3S
YMCBWKW_A” in “Function code 71”,
refer to
“4.3 Troubleshooting for Image Defects” in
this chapter and take a measure.
3 Connection failure of the
registration mark sensor L PCB
harness
Reconnect the registration mark sensor L
PCB harness.
4 Density sensor failure Replace the registration mark sensor unit.
5 Main PCB failure Replace the main PCB ASSY.
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