Noise From The Paper Exit Section - Konica Minolta bizhub C650 Technical Bulletin

C451 / C550 / C650
C452 / C552 / C652 / C552DS / C652DS
SYMPTOM
Noise may be generated at the exit rollers and the shaft.
CAUSE
Paper dust, toner particles, and other debris have accumulated on and around the exit rollers and the shaft.
FIELD ACTION
Clean the rollers, shafts, and plates shown below.
Then apply Drysurf.
• Apply Drysurf to the ends of the lower exit roller
shaft.
• Apply Drysurf to the entire upper exit roller shaft.
Note: There are two obvious differences in the exit rollers for these two model groups. The changes were
made for compatibility with future models.
• The color of the rollers was changed from white to black
for models 552, 652, C452, C552, C652, C552DS, and
C652DS. There was no material change other than color.
• For the same models, the number of rollers was reduced
from 8 to 4.
These changes have no impact on the potential for noise.
Page 8 of 18

Noise from the Paper Exit Section

552 / 652
Upper exit
roller assy.
Lower exit roller assy. (roller not visible)
C451 / C550 / C650
552 / 652
C452 / C552 / C652 / C552DS / C652DS
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CONTENTS
Shaft
Rollers/plates
December 19, 2011