1-4-59
(8) One side of the print image is darker or brighter than the other.
1. Table scanning
2. DP-scanning
Print example
Defective part
Check description
Corrective Action
1
Original document
Check whether the original
document is dirty.
If the original document is dirty, replace.
2
Original document
Check if the original document
has creases or foldings or wrin-
kles.
If the original document has foldings or
creases, remove them.
3
Position of the mat
of the platen
Check whether the position of
the mat of the DP or the platen is
wrong.
If the position of the mat of the DP or the platen
is shifted, re-mount.
4
Contact glass
Check whether the contact glass
is dirty.
If the contact glass is dirty, clean the contact
glass, and the bottom part of the shading plate.
5
Contact glass assy Check the location the contact
glass is mounted.
If the light guide panel has been fallen off of the
mounting position, fix it properly.
6
Lamp unit
Check the position at which the
light guide panel is mounted.
If the contact part of the lamp unit and the rail is
distorted, replace the lamp unit.
7
Mirror
Check whether the mirrors are
dirty.
If the mirrors are dirty, clean the three mirrors.
8
CCD PWB
The CCD PWB is defective.
Replace the ISU and perform U411.
(see page 1-3-54)
9
Control PWB
The control PWB is defective.
Replace the control PWB.(see page 2-2-12)
Defective part
Check description
Corrective Action
1
Original document
Check whether the original
document is dirty.
If the original document is dirty, replace.
2
Original document
Check if the original document
has creases or foldings or wrin-
kles.
If the original document has foldings or
creases, remove them.
3
DP scanning guide Check that the scanning guide is
smoothly operative.
If the scanning guide does not rotate smoothly,
re-install.
Service Manual
Y116
540-5
Summary of Contents for d-Copia 4003MF
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Page 484: ...Installation Guide PF 320 Paper Feeder Installation Guide...
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