Black Dots Appear On The Image - Kyocera ECOSYS M3040dn Service Manual

(9) Black dots appear on the image.

Print example
1. Table scanning
Defective part
Original document
1
Contact glass
2
FFC cable CCD
3
Control PWB
4
2. DP-scanning
Defective part
Original document
1
Slit glass
2
FFC cable CCD
3
Control PWB
4
Check description
Check whether the original
document is dirty.
Check whether the contact glass
is dirty.
Check the FFC cable between
the CCD and control PWB is
properly connected. Or, verify
conduction of the wire.
The control PWB is defective.
Check description
Check whether the original
document is dirty.
Check whether the slit glass is
dirty.
Check the FFC cable between
the CCD and control PWB is
properly connected. Or, verify
conduction of the wire.
The control PWB is defective.
If the original document is dirty, replace.
If the contact glass is dirty, clean the contact
glass, and the bottom part of the shading plate.
Reinsert the connector if its connection is
loose. Or, if conduction is lot, replace the wire.
Replace the control PWB.(see page 2-2-12)
If the original document is dirty, replace.
If the contact glass is dirty, clean the contact
glass, and the bottom part of the shading plate.
Reinsert the connector if its connection is
loose. Or, if conduction is lot, replace the wire.
Replace the control PWB.(see page 2-2-12)
1-4-60
2NM/2NX/2NY/2NZ/2P0/2P6
Corrective Action
Corrective Action