Copy Quality - Ricoh FT7770 Service Manual

30 April, '89

COPY QUALITY

1) Firefly Spots
Is there a small black
Y N
I
Check and adjust the
Is the image density too
Y N
I
As toner may be sticking to the ends of the development
roller:
o Clean the ends of the development roller.
o Replace the developer and the side seals.
Correct the light copy condition. Refer to "Light Copy" section.
2) Small Spots
Perform drum conditioning. If the problem is not solved, check
if the charge corona current is correct?
Y N
I
Adjust the charge corona current.
Clean the transfer corona wire and adjust the transfer current.
spot in the center
doctor gap (0.90 mm).
light?
13-2
of the white spot?