Technical Bulletin  PAGE: 1/1 
Reissued:15-Aug-11 
Model: Taurus-C1 (D074/D075) Date: 15-Jul-11 No.: RD074017a 
 
 
RTB Reissue 
Notes in bold italics were added.
Subject: Abnormal Noise from the Mainframe Prepared by: T. Komori 
From: PP Service Planning Department 1G  
Classification: 
 Troubleshooting 
 Mechanical 
 Paper path 
 Part information 
 Electrical 
 Transmit/receive 
 Action required 
 Service manual revision 
 Retrofit information 
 
 Product Safety   Other ( )   Tier 2 
Symptom 
Abnormal sound is generated from the mainframe. 
Cause 
Friction between the drum shaft and the spring plate located behind the PCDU cover 
 
 
 
 
 
 
 
 
 
 
 
 
Solution 
Pull out the PCDU and grease the tip of the drum shaft.  
  
   
Grease
Grease; 
SHIN-ETSU KS-660 
(p/n:G0049668) 
 
Apply approximately 
φ1mm – 2mm of grease 
to the tip of the shaft as 
shown in the left photo. 
 Although the photos above are taken with the PCDU inner cover removed, the PCDU 
inner covers DO NOT have to be removed to apply grease to the tip of the drum shaft. 
 If the PCDU inner cover is to be removed for other maintenance purposes, make sure to 
pull out the PCDU before removin
the cover to prevent breaka
e of the sprin
 plate.