Oce 3121, Technical & Service Manual

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16 TSM Océ 3121 Image quality
The copy has a displaced leading edge
The copy has blurred images
Cause Step Checks Y/N Action
1 Is the RDF being used? Yes Solve the problem, by
referring to the RDF sec-
tion.
Document 2 Is the document position
correct? No Place the document cor-
rectly?
The pick-up roller, the
feeding roller, and the
separation roller 3 Has the relevant roller
reached the end of its
scheduled lifetime? Yes Replace the roller
( ‘ * 3 * ‘ ), ‘ REGIST ‘ 4 Execute ’REGIST’ in
service mode (*3*).
The registration roller,
the pick-up roller and
the feeding guide. 5 Is the problem evident
only on the second side
of a two-sided copy, or an
overlay copy? No Check the lower fuser
roller
Yes Check and clean:
■
Registration roller
■
The pick-up roller and
the feeding guide.
Cause Step Checks Y/N Action
Scanner cable 1 Is the cable twisted or
frayed on the pulley,
when the scanner is mov-
ing? Yes Correct the routing of the
cable, or replace the
cable.
Scanner rail 2 Move mirror 1 by hand.
Does it move smoothly? No Clean the surface of the
scanner rail, using alco-
hol. Then, apply a drop
of lubricant.
Drive for the OPC, and
the OPC 3 Is the problem repeated
at intervals of approxi-
mately 94 mm? Yes
■
Check the drive of the
OPC
■
Check for scratches or
foreign matter at the
ends of the OPC. These
are in contact with the
developing roller.
Gear for the developing
roller 4 Is the problem repeated
at intervals of 35 mm? Yes Check the developing
unit.
OPC drive
OPC unit No
■
Check the drive of the
OPC
■
Replace the OPC unit