DRUM UNIT
B234/B235/B236/D101/D102/D103 6-70 SM
2nd Cleaning Blade
The 2nd cleaning blade [A] removes paper dust and other particles from the
surface of the drum, especially in work areas that are very humid.
The 2nd cleaning blade solenoid [B] operates the 2nd cleaning blade.
• During copying and when the machine is not being used, the 2nd cleaning blade
does not touch the drum.
• At the end of the process control sequence, or at times prescribed with SP2930,
the solenoid activates and locks the 2nd cleaning blade against the drum to
clean the drum surface.
Detecting the Status of the 2nd Cleaning Blade
The solenoid moves the 2nd cleaning blade release arm to the contact position and
locks the blade against the drum. The release mechanism of the 2nd cleaning
blade has a "push-switch" [C] which confirms whether the 2nd cleaning blade
release arm is operating correctly. This push-switch is set so it is under pressure
when the blade is against the drum.
If an abnormal condition is detected, the machine issues SC488.
B234D868A.WMF
[A]
[B]
[C]
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