Ricoh D009 Service Manual page 328

SP4-xxx: Scanner-1
1: On. Dust warning. This warning does not stop the job.
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
002
the setting to increase the level of sensitivity. If warnings are issued when
you see not black streaks in copies, lower the setting.
Correction Level
003 Selects the level of the sub scan line correction when using the ARDF.
[0 to 4 / 0 / 1]
0: OFF, 1: Weakest, 2: Weak, 3: Strong, 4: Strongest
APS Sensor Output Display
4301
Displays a code that represents the original size detected by the original
sensors. (* " Section 5.25 "Input Check - 1"")
APS A5/LT Size Detection
Determines whether an original of non-standard size is detected as A5/HLT
size by the APS sensor.
4303*
0: No original
1: A5/HLT- lengthwise (SEF)
2:A5/HLT - Sideways (LEF)
If "0" is selected, "Cannot detect original size" will be displayed.
D009/D011/D012/D013
Before switching this setting on, clean the ADF scanning glass and
the white plate above the scanning glass.
Dust that triggers a warning could move 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.
5-42 SM