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Reissued:12-Feb-14
Model:
Taurus-C1a/C1b (D074/D075)
RTB Reissue
The items in bold italics were corrected or added.
Subject:
Troubleshooting procedures for Banding (uneven
density in 50mm pitch)
From:
PP Tech Service Dept., 1st PP Tech Service Sect.
Classification:
SYMPTOM
Banding (uneven density) at 50mm intervals
CAUSE
Gap between the drum and
development roller
fluctuates.
Machine usage conditions
Recommended Action
Step1:
Are the markings on the drive gear and coupling gear of the development roller
aligned?
Yes :
Go to step 2.
No : Do the "Development roller Drive gear – Coupling gear alignment
procedure" described in the last part of this bulletin.
Print the image showing the problem. Has the problem been resolved?
Yes :
Finished.
No : Go to step 2.
echnical
T
Troubleshooting
Mechanical
Paper path
Product Safety
Cause
Drive gear and coupling
gear of the development
roller are misaligned.
Development unit is of the
old type (D0742301-03).
Development unit was
damaged during transport.
Toner/developer
degradation
ulletin
B
Date:
22-Aug-11
Prepared by:
Part information
Electrical
Transmit/receive
Other (
)
Align the drive gear and
coupling gear. (Step 1)
Replace with the latest
development unit. (Step 4)
Refresh toner. (Steps 2&3)
Replace developer. (Step 4)
PAGE: 1/4
No.:
RD074019a
Hiroshi Inenaga
Action required
Service manual revision
Retrofit information
Tier2
Solution
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