Ricoh ADF DF7010 Field Service Manual page 47

2. Adjusting the ADF Scan Level: Text/
Photo,Photo/Text, Photo mode
(Make adjustment by the black level and the peak
hold.)
Adjustment procedure
1. Access HELP-045.
HELP-045 → See page 65
2. Select and touch the item to be adjusted and
change the value.
Adjust density of the dark part.
● To heighten density of the dark part.
→ Increase the black level.
● To lower density of the dark part.
→ Decrease the black level.
Adjust the total lightness.
● Scumming occurs.
→ Decrease the peak hold. (Minus side)
● Master making of the light part is impossible.
→ Increase the peak hold. (Plus side)
X
3. Press the = key to store the set value.
4. After master making and printing, check density.
Chapter 4 2 Electrical System
● HELP-045 display
HELP-045
ADF SCAN LEVEL ADJUSTMENT
TEXT/PHOTO
TEXT
BLACK LEVEL
BLACK LEVEL
200 090
1. 4.
WHITE LEVEL
WHITE LEVEL
220 120
2. 5.
PEAK HOLD PEAK HOLD
+0.0
+0.0
3. 6.
HELP-045
ADF SCAN LEVEL ADJUSTMENT
PHOTO/TEXT
PHOTO
BLACK LEVEL
BLACK LEVEL
080 040
7. 10.
WHITE LEVEL WHITE LEVEL
040 040
8. 11.
PEAK HOLD
PEAK HOLD
−0.5
+0.0
9. 12.
Touch
４
45