Ricoh B051 Service Manual page 1060

Tech Service Bulletin No. B051/B052 – 036
These machines were picked for a QA sample check on the production line. After the QA check, the cleaning
unit was cleaned on the line. It is likely that the Mylar moved to the opposite position during cleaning of the
ITB cleaning unit. If the cleaning roller gear is rotated incorrectly during the cleaning stage, the Mylar moves
to the incorrect position.
7 mm
SOLUTION:
In the field:
Replace the development shaft (G0704607: Development Shaft – FC Index 26 p34).
On the production line:
Temporary solution: From July 17 production.
1. Shaft diameters checked to make sure only those within specification are used.
2. Gear rotational torque measured to make sure only those within specification are used.
Permanent:
1) When materials or scratches are detected on the surface, the shaft is not used (no grinding/polishing).
2) The factory continues to check the parts produced with the temporary countermeasure above.
CÓPIA NÃO CONTROLADA
384.5±0.2 mm
Specification: Development Drive Shaft
G0704607
CÓPIA NÃO CONTROLADA
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