2WA/2NJ/2RK
7-579
7-8 Abnormal Noise
No. Contents Condition
(1) Abnormal sound occurs (Basic Measures)
(2) Abnormal sounds from the paper conveying
section
Frictional wear, smudges / foreign objects adhe-
sion on the conveying rollers, pulleys and the
gears
(3) Abnormal sound from the developer section Caused by the developer unit.
(4) Phenomenon 1 Phenomenon 2
(5) Abnormal sound from the eject section Smudges / foreign objects adhesion in the eject
section
(6) Fan rotating sounds are noisy
(7) Abnormal sound from the primary paper feed
section
Frictional wear, smudges / foreign objects adhe-
sion, attachment failure of the primary paper
feed section
(8) Abnormal sound from the machine front side Wear, dirtiness, foreign objects adhesion or
attachment failure at the MP feed section
(9) Abnormal sound from the lower side than the
fuser eject section
Rubbing sound between the bushing and the
stop ring of the fuser eject roller due to the
smudges / foreign objects adhesion
(10) Abnormal sound from the upper side of the fuser
eject section
Rubbing sound between the fuser eject pulley
and the shaft due to the smudges / foreign
objects adhesion
(11) Abnormal sound from the fuser section Smudges / foreign objects adhesion or the inter-
ference between the parts in the fuser section
(12) Abnormal sound from inside the machine Open and close operation failure of the toner
supply opening of the toner container, the lack of
toner amount, or the toner condensation
(13) Abnormal sound from inside the machine Smudges / foreign objects adhesion or the toner
condensation in the developer section
(14) Abnormal sound from inside the machine Frictional wear, smudges / foreign objects adhe-
sion, or the waste toner clogging in the drum
section
(15) The drive sounds are noisy during printing The operation sounds in the drive section
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