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Troubleshooting > Troubleshooting Items > Image Failure > Drum Ghost
Troubleshooting > Troubleshooting Items > Image Failure > Drum Ghost
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Drum Ghost
Feed direction
[Cause]
As the residual toner accumulated on the Upstream Brush increases, potential cannot be
equalized when outputting solid white and solid black after transferring to the ITB so that the
failure occurs.
[Condition]
It occurs when the life of the Drum Unit is advanced in a high duty/high CV environment.
F-6-13
[Field Remedy]
Perform the field remedy by referring to the following flow chart.
Drum Ghost occurs.
Increase the level of Upstream
DC bias by 1.
(Lv2)COPIER>ADJUST>
HV-PRI>USUB-xDC
Is trace of Upstream
Brush disappeared?
Is ghost disappeared?
END
Is ghost disappeared?
YES
Yes
NO
YES
NO
Decrease the amount of
toner deposit.
(Lv2)COPIER>OPTION>
IMG-MCON>TNR-DWN
Decrease the level of Upstream DC
bias by 1.
(Lv2)COPIER>ADJUST>
HV-PRI>USUB-xDC
NO
Replace the Drum Unit of
the specified color.
Return the service mode setting
Value to the default.
Specify the color with which
ghost occurs by visual check.
* In case of color, x represents Y-color.
In case of Bk, it represents K-color.
CAUTION
In case that the Drum Unit is replaced, return the setting value to the default.
F-6-14