2-55
Confidential
■ Error code 81
Incorrect density sensor measurement value when implementing adjustment of color density.
Error code 82
Density patch measurement is not completed normally when implementing adjustment of color
density.
<User Check>
- Check if the genuine toner cartridges are installed in the correct order of colors.
- Check if there is a scratch, dirt or the like on the belt unit. If there is, replace the belt unit
with a new one.
- Replace the waste toner box with a new one.
■ Error code 83
Drum unit error. (An drum error occurred after the drum unit reached the end of life.)
<User Check>
- Replace the drum unit with a new one and reset the drum counter.
(Refer to “2.3 Parts Life Reset Function” in Chapter 5.)
Calibrate
Calibration failed. See Troubleshooting chapter in User's Guide.
Calibrate
Calibration failed. Press Go, and try again.
Step Cause Remedy
1 Foreign object is affixed around
the density sensor
Remove the foreign object affixed around
the density sensor.
2 Harness connection failure of
registration mark sensor holder
ASSY
Check the harness connection of the
registration mark sensor holder ASSY and
reconnect it.
3 Density sensor failure Replace the registration mark sensor
holder ASSY.
4 High-voltage power supply PCB
failure
Replace the high-voltage power supply
PCB ASSY.
5 Engine PCB failure Replace the engine PCB ASSY.
6 Low-voltage power supply PCB
failure
Replace the low-voltage power supply
PCB ASSY.
7 Main PCB failure Replace the main PCB ASSY.
Drum Stop
Replace the Drum Unit. Refer to the instructions in the carton of new drum.
Step Cause Remedy
1 Main PCB failure Replace the main PCB ASSY.
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