Group 4000
SM 5-135 D014/D015/D078/D079
Service
Tables
4020 Dust Check
These SP codes adjust the dust check operation at the ADF scanning glass
and the white scanning belt.
Note: Dust that triggers a warning could be removed from the glass by the
originals in the feed path. If the dust is removed by passing originals, this is not
detected and the warning remains on.
1 Dust Detect:On/Off
Switches the dust warning on and off. When this SP is on, a warning is issued
if the check detects dust on the ADF scan glass or the white plate above the
scanning glass. Always clean the ADF scanning glass and white plate before
turning this SP on.
[0 to 1/1] 0: Off, 1: On
2 Dust Detect:Lvl
Adjusts the sensitivity of the check. If you see black streaks in copies when no
warning has been issued, raise the setting to increase the level of sensitivity. If
warnings are issued when you see no black streaks in copies, lower the
setting.
[0 to 8/1]
3 Dust Reject:Lvl
Sets the level for vertical line correction caused by dust. A high setting can
eliminate unwanted vertical lines caused by dust but it can also thin vertical
lines of the original.
[0 to 4/1]
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