Light Copies, White Lines, Faint Images, Uneven Image Density - Ricoh B051 Service Manual

Tech Service Bulletin No. B051/B052 – 014 REISSUE

LIGHT COPIES, WHITE LINES, FAINT IMAGES, UNEVEN IMAGE DENSITY

SYMPTOM:
Light copies, white lines, faint images, uneven image density (KMCY) from Cyan toner dropping.
Cyan toner drops from the development unit onto the toner shield glass of the LD unit, which may cause the
outputs to show uneven image density, faint images, or white lines (depending on the amount of fallen
toner).
NOTE: This can be confirmed by removing the PCU and checking inside the machine for fallen Cyan
toner.
CAUSE:
Insufficient toner charging due to the diameter of the Cyan Doctor Roller.
SOLUTIONS:
Production Countermeasure:
The diameter of the Cyan Doctor Roller has been increased from 10 mm to 12 mm from August 2003
production.
P/N change:
Cyan Development Unit: B0523207 → B0523217.
Field Countermeasure:
Clean any fallen toner off the toner shield glass and see if the symptom occurs. If there is no improvement,
install the new Cyan Development Unit.
CÓPIA NÃO CONTROLADA
CÓPIA NÃO CONTROLADA
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