[Line Image (By Stream Read Glass)]; Lines On Images When Using Dadf (Duplex/Color Image Reader Unit-C1) [G]; There Are Lines Through Copies, When Using The Adf (Duplex Color Image Reader Unit-C1) [G] - Canon imageRUNNER ADVANCE 8105 Series Manual

[Line image (by Stream Read Glass)]

Symptom

Lines on images when using DADF (Duplex/Color Image Reader Unit-C1) [G]

Description
Lines appear on images only when copied from the DADF.
Field Remedy
Select service mode (Level 2) > COPIER > OPTION > IMG-RDR > DF-BLINE (ON/OFF of dust detection
in DADF stream read), and set to "1". The dust detection is OFF when set to "0" and ON when set to "1"
and the default value is "0".
[Caution] When "1: ON" is set, black line is resolved, but sharpness of image edge is decreased.
Symptom

There are Lines Through Copies, When Using The ADF (Duplex Color Image Reader Unit-C1) [G]

Description
There are lines through copies, when using the ADF
Field Remedy
The two covers shown below have dust collection tape adhered to them, and after many scans through
the feeder they get full. At this point the tape will no longer collect the paper dust. The paper dust will
then float around in the DADF and eventually make its way into the reading glass. This will causes lines in
the feed direction and can change place from copy to copy; front or back side. The lines can be black or
white depending on where the paper dust gets into.
Items are shown below: Clean/replace as necessary.
FL2-9590 COVER, SIDE, LEFT
FL2-9650 GUIDE, OPEN/CLOSE COVER
pg. 227