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echnical
ulletin
T
B
PAGE: 21/25
Model:
Date:
No.:
RD074118
Taurus-C1a/C1b (D074/D075)
20-Mar-14
7. SC449
Excerpt from RTB #RD074111
Symptom
SC449 (ITB Tray Lift [K] error) occurs and the Bk image transfer roller remains up against
the drum even when releasing the ITB lock lever or turning the screw to lower the right half
of the ITB unit according to the procedure described in following section of the field service
manual.
4. Replacement and Adjustments > Common Procedures > Pulling Out the ITB Unit >
Before Pulling Out the ITB Unit and PCDUs
Check if the Bk image transfer roller is raised up against the drum by looking at the front
edge of the ITB. If you see the white cap as shown in the photo below, the ITB lift motor
has failed to lower the belt.
Cause
Following are the possible causes of this problem.
1. The 2nd lift motor or its gear is clogged with toner.
2. The 2nd lift motor sensors are dirty or damaged.
3. Damaged or disconnected harnesses
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