T
echnical 
B
ulletin  PAGE: 1/4 
Model: 
Taurus-C1a/C1b (D074/D075)
 Date: 
1-Apr-13
 No.: 
RD074101 
 
 
Subject: 
Notes on re-installing the drum cleaning unit 
 Prepared by: 
Shinnosuke Sasaki
 
From: 
1st PP Tech Service Sec., PP Tech Service Dept.,
 
Classification: 
 Troubleshooting 
 Mechanical 
 Paper path 
 Product Safety  
 Part information 
 Electrical 
 Transmit/receive 
 Other (  ) 
 Action required 
 Service manual revision 
 Retrofit information 
 Tier 2 
 
This RTB has been issued to announce the following three notes and a correction of the 
TCRU manual regarding the procedure for re-installing the drum cleaning unit. 
 
These notes are important in preventing SC39x (drum motor errors) and the image quality 
issue known as in-track lines. 
 
Note 1: Always replace the drum lubrication bar and drum lubrication 
roller as a set. 
 
Make sure that the drum lubrication bar and drum lubrication roller are always 
replaced as a set, whether the replacements take place for PM or EM.  A worn roller 
can cause unsatisfactory lubrication even if the lubrication bar is new, and vice versa. 
 
 
Drum Lubrication Bar
Drum Lubrication Roller