Poor Image - Ricoh C249 Service Manual

OTHERS

4.4.5 POOR IMAGE

Model Problem
C264 Blank image
C249
C238
C264
C249
C238
C264 Faint image
C249
C238
C264
C249
C238
C264 Faint image
C249
C238
C264 Shift paper
registration
C249
C238
C238 Side to side
registration
problem
C238 The area from
the leading
edge to about
30mm down
has doubled or
blurred images.
C264
Cause
Double masters on drum
(Incorrect detection of a
drum master sensor)
Incorrect operation of the
printing pressure lever.
Ink detection errors.
A metal screen causes
small chunks of ink to
clog the drum if the
machine has not been
used for a long period of
time.
Master separates from
the clamp due to an
incorrect setting of the
doctor gap.
The position of
registration is not right.
Side pads.
The amount of buckle is
not enough at the press
roller.
4-12
24 February 2006
Solution
"Problem：Double masters on
drum"
Adjust the gap of the press roller
release lever. ( S/M 3.7.2)
"Problem：Does not supply
ink".
Adjust the doctor gap. ( S/M 3.8.8)
Clean the metal screen with
alcohol.
Caution: Be careful around the
mylar.
Replace the metal screen.
Adjust the doctor gap. ( S/M 3.8.8)
Adjust SP6-21 (paper registration
position). ( S/M 5.7.3)
C249/C264: Adjust SP6-100 to 107
(paper registration - each speed)
C238: Adjust SP6-23 (paper
registration - each speed)
( RTB# RC238008a)
C238: SP6-33 (paper registration -
each speed, when image shifts
forward)
SP6-34 (paper registration - each
speed, when image shifts
backward)
( RTB# RC238011d)
Upgrade firmware and adjust the
paper feed tray at the same time.
( MB #MC238001, RTB
#RC238002)
Change the guide plate sheet. (
MB #MC238009)
SM