Service Bulletin Ref. No.2J0-0026 (B297) September 14, 2011 Subject Measures against the Abnormal Image FS-2020D, FS-3900DN, FS-3920DN, FS-4000DN, FS-4020DN, Model FS-3040MFP, FS-3140MFP, FS-3040MFP+, FS-3140MFP+, FS-3540MFP, FS-3640MFP Topic Zigzags might appear in the sub-scanning direction (vertical direction) as shown in the sample image below due to the contact failure between the heat roller bearing and the ground plate of the fuser unit. Therefore, the following changes were made in order to improve the contact.
Abnormal image sample
Content of Changes Ground plate (PLATE EARTH FUSER) (No.15) - Change of the material (Hardened): SUS 304CSP1/2H SUS 304CSPH - Change of the shape
Check the gap between the bearing and ground plate (to be contacted)
