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echnical
ulletin
T
B
PAGE: 2/4
Reissued:13-Jun-12
Model:
Date:
No.:
Taurus-C1/P1 (D074/D075/M044)
14-Oct-11
RD074023b
RD074023a
We have found one more part that must be replaced together in the temporary
action.
Please be informed that this notice is temporary; until January 2012.
(Additional announcement will follow around December 2011.)
Symptom
High frequency banding (2.5-2.7mm pitch banding)
Cause
When the drum cleaning unit reaches half of its yield, which is approximately 67,500m,
equivalent to 150kP (* see the note below), the lubricant brush roller begins to rotate
slightly faster to maintain sufficient lubrication on the drum surface. However, this high
speed rotation of the lubricant brush roller causes the PCDU to vibrate, resulting in high-
pitch banding as shown in the photo above.
This is a temporary procedure until January 2012. A permanent countermeasure will be
prepared for announcement by the beginning of January 2011.
Note
The Taurus refers to the "running distance" to calculate the PM yield of the drum cleaning unit, not
the conventional "page counter".
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