Sp6-31: Sbu Calibration - Ricoh C249 Service Manual

5.7.4 SP6-31: SBU CALIBRATION

Adjusts the SBU after the MPU or the white plate located behind the original scale
is replaced.
1. Place a stack of 10 sheets of paper on the exposure glass.
2. Access SP6-31 and then press the Enter key to start the auto calibration.
5.7.5 SP6-32 TO 37: MTF FILTER
Sharpens image, however moiré can become more apparent.
Refer to the following table for the relationship between this SP mode value and
filter strength (the relationship is not linear).
Value
7
6
0
5
4
3
2
1
SM
Strength of Filter
X 4
X 2
X 1
X 1/2
X 1/4
X 1/8
X 1/16
X 1/32
5-17
MAIN MENU NO.6: ADJUSTMENT
C249