
Poor density or white band image due to the boss breakage of the
stirring rod
[Symptom]
Poor density or white band image may occur in the machine earlier than the following countermeasure cut-in serial numbers in
factory.
Below is a sample of image with white band phenomenon. Arrow shows the paper feeding direction.
[Cause]
When the stirring sheet [1] of the second stirring rod contacts the container, a stress concentrates to the base of the boss, which
is connected to the 20T gear [2]. Repetitive stress may lead to breakage of the stirring rod, and toner will no more be stirred or
supplied, resulting in the above mentioned phenomenon.
Figures below shows the configuration around the 20T gear and the second stirring rod, normal stirring rod [3] and the broken
stirring rod [4].
[Service work]
When the above symptom occurs, follow the steps below and perform the works.
1) Service Mode(Level1): COPIER > TEST > PG, set value to 3 and conduct test print.
2) Check the test print above 1) and follow the flow chart below to decide what to do.
Figure [A] is a sample of test print with a white band[a] formed in the rear side. Arrow shows the paper feeding direction.
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Summary of Contents for imageRUNNER ADVANCE 8500 series
Page 37: ...iR ADV 8585i 120V USA G SWP00501 iR ADV 8505 220V CN SWE00105 33 ...
Page 53: ...4 5 Make some prints and check that the above issue does not occur 49 ...
Page 66: ...2 Remove the grate shaped lower guide 2 screws 2 62 ...
Page 70: ...7 Reattach the metal plate 1 Screw 2 x1 8 Loosen the 2 screws 1 66 ...
Page 74: ...iR ADV 8505 220V CN To be informed as soon as identified 70 ...
Page 90: ... Service parts FM4 0889 010 solenoid assembly 86 ...