Cyan Lines In Yellow Background Areas, Cyan Spots/Lines In Background And Main Image Areas - Ricoh B051 Service Manual

Tech Service Bulletin No. B051/B052 – 014 REISSUE
CYAN LINES IN YELLOW BACKGROUND AREAS, CYAN SPOTS/LINES IN
BACKGROUND AND MAIN IMAGE AREAS
SYMPTOM:
Cyan lines in yellow background areas
NOTE: Both development and cleaning are performed in the order: KMCY. If the previous cleaning was
insufficient, a dirty image will appear on the next development. The symptom can therefore be
easily identified by checking the yellow section of the C4 test
CAUSE:
Toner may pass between the OPC unit cleaning blade and OPC belt.
NOTE: To distinguish between this symptom and Cyan Spots/Lines In Background And Main Image
Areas (described next page), make multiple copies/prints of the same image.
Cyan lines in yellow background areas: Occurs consistently
Cyan spots/lines in background and main image areas: Occurs, disappears, then sometimes reoccurs.
SOLUTION:
Production Countermeasure:
The material of the cleaning blade has been changed (from August 2003 production)
Field Countermeasure:
Refer to this TSB, i.e. replace the OPC Cleaning Unit.
NOTE: Cyan toner may be attracted to the surface of the Y development roller after passing between the
OPC unit, the cleaning blade or OPC belt. (See the following picture.)
After you have taken action for the PCU unit, print out several sheets of the Y checker flag pattern
with (SP5-955, No. 16). If the symptom disappears, the Y development unit can be used. It is not
necessary to replace the Y development unit at this time.
CÓPIA NÃO CONTROLADA
(Sample 3).
CÓPIA NÃO CONTROLADA
chart.
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