Ricoh ADF DF7010, Field Service Manual

Page: 47 / 72

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45
Chapter 4 2 Electrical System
HELP-045
200
220
+0.0
+0.0
090
120
1.
2.
3.
6.
4.
5.
ADF SCAN LEVEL ADJUSTMENT
TEXT
BLACK LEVEL
TEXT/PHOTO
BLACK LEVEL
WHITE LEVEL
WHITE LEVEL
PEAK HOLD PEAK HOLD
(Make adjustment by the black level and the peak
hold.)
Adjustment procedure
1. Access HELP-045.
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)
3. Press the
X
=
key to store the set value.
4. After master making and printing, check density.
2. Adjusting the ADF Scan Level: Text/
Photo,Photo/Text, Photo mode
● HELP-045 display
Touch
HELP-045
080
040
− 0.5 +0.0
040
040
7.
8.
9. 12.
10.
11.
ADF SCAN LEVEL ADJUSTMENT
PHOTO
BLACK LEVEL
WHITE LEVEL WHITE LEVEL
PEAK HOLD
PEAK HOLD
PHOTO/TEXT
BLACK LEVEL
HELP-045 → See page 65