Ricoh B051 Service Manual page 1165

Tech Service Bulletin No. B051/B052 – 042
Attaching the seals:
1) Align the bottom and side edges (shown with red lines below) with the corresponding edges of the
development unit.
NOTE: The target is to perfectly align the seal with the unit edges, with a maximum of +1 mm outward
from the unit side edge. Make sure not to attach the seals inward of the unit side edge.
2) Bend back the tabs on the lower edge of the seal, then affix them to the bottom surface of the unit.
3) Make sure to smooth out the surface of the seal and press firmly when attaching, in order to prevent any
bubbles. Also, after attaching, make sure there are no gaps between the seals are doctor roller shaft (See
photo below).
IMPORTANT:
1) While attaching the Mylar seals, make sure that no foreign particles come in contact with the
development roller surface and that the development unit surface is not damaged.
2) The actual seals are not marked with red lines. The red line is only a visual aid for the
photographs on the next page.
3) If 54 mm-pitched marks appear after attaching the seals, the development roller surface
needs to be cleaned (turn the development roller in the reverse direction 2 times and clean
with a dry cloth).
CÓPIA NÃO CONTROLADA
CÓPIA NÃO CONTROLADA
NG: There is gap between
the seal and doctor roller
shaft.
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