Ricoh D017 Service Manual page 468

ADF Scan Glass Dust Check
This function checks the narrow scanning glass of the ADF for dust that can
4020
cause black lines in copies. If dust is detected a system banner message is
displayed, but processing does not stop.
Check On/Off Change
Issues a warning if there is dust on the narrow scanning glass of the ADF
when the original size is detected before a job starts. This function can
detect dust on the white plate above the scanning glass, as well as dust on
the glass. Sensitivity of the level of detection is adjusted with SP4020 2.
1
[0 to 1 / 0 / 1]
0: Off. No dust warning.
1: On. Dust warning. This warning does not stop the job.
Before switching this setting on, clean the ADF scanning glass and
the white plate above the scanning glass.
Detect Level
Adjusts the sensitivity for dust detection on the ADF scanning glass. This SP
is available only after SP4020 1 is switched on.
[0 to 8 / 4/ 1]
If you see black streaks in copies when no warning has been issued, raise
2
the setting to increase the level of sensitivity. If warnings are issued when
you see not black streaks in copies, lower the setting.
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.
3 Correction Level
Selects the level of the sub scan line correction when using the ARDF.
[0 to 4 / 0 / 1 /step]
0: Off, 1: Weakest, 2: Weak, 3: Strong, 4: Strongest
SM Appendix 4-35 D017/D018/D019/D020/D084/D085
System SP Tables-4