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Control panel messages
31
1
This message indicates a waste toner sensor malfunction.
1
Turn the printer off and on to reset the printer.
2
Remove the drum cartridge and clean the waste toner detection
window with a dry cloth.
3
Clean the waste toner sensor unit at the printer side with a dry cloth.
4
Check the light guide and clean if necessary. Replace if the ends are
scarred.
5
Reconnect the waste toner sensor unit connector and the DC
controller PCB connector (J1009) correctly.
6
Replace the waste toner sensor (PS13).
The OHT sensor has reported an error condition. This can be caused
by contamination in the connectors, a blocked sensor, or a defective
sensor.
1
Remove the ITB and verify that the OHT sensor prism is in place.
2
Lift the registration flap and verify that the OHT sensor is not
blocked.
3
Remove the ITB drawer and inspect the drawer connectors for
contamination such as a piece of paper.
4
If the error persists, verify that all connectors are firmly seated.
5
Replace the ITB drawer.
54.5 Printer error
54.6 Printer error
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