2GL/2FV/2FW
1-5-12
7990
(DA)
Waste toner full (Total page count
more than 100,000 pages of printing)
• The toner-full sensor has detected that
the waste toner is full before the total
print page of more than 100,000
pages.
Defective drum
unit.
Follow the flow chart.
Defective waste
toner full sensor.
Defective engine/
high voltage PWB.
Code Contents
Remarks
Causes Check procedures/corrective measures
No
No
End.
Yes
Yes
Turn power switch off,
then on.
Turn power switch off,
then on.
Shake the drum unit
horizontally.
Replace the drum unit.
See page 1-6-6.
Replace waste toner full
sensor or engine/high voltage
PWB. See page 1-6-17.
Start
"7990" error
shown?
"7990" error
shown?
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