T
echnical
B
ulletin
PAGE: 1/3
Model:
Taurus-C1/P1 (D074/D075/M044)
Date:
16-May-12
No.:
RD074066
Subject:
Troubleshooting Stuck Lock Lever of the Drum
Cleaning Unit
Prepared by:
K. Tsutsui
From:
1st PP Tech Service Section, PP Tech Service Dep.
Classification:
Troubleshooting
Mechanical
Paper path
Part information
Electrical
Transmit/receive
Action required
Service manual revision
Retrofit information
Product Safety
Other ( )
Tier 2
This RTB is targeted only for NA.
SYMPTOM
The drum cleaning unit lock lever could be stuck, making it impossible to remove the drum
cleaning unit from the PCDU.
CAUSE
The drum cleaning unit is set in the PCDU by turning the lock lever clockwise, which fixes
the pin that protrudes from the development unit with the hollow shaft on the drum
cleaning unit. However, the tip of the hollow shaft could be rough on its surface and this
disables the release of the pin on some units.
Occurrence rate:
2.87%
This rate indicates the number of units that have the possibility of the above failure, and
does not indicate the actual number of affected units.
The lever will not turn
counterclockwise to
release the lock.
Hollow shaft on the drum cleaning unit
Pin on the development unit