Ricoh TH-C1b Service Manual page 232

B156/b220
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10 February, 2005
Mode No.
4
(Class 1, 2, and 3)
800
3
B
885
Level Adjustment: R
886
Level Adjustment: G
887
Level Adjustment: B
902
ACC Data Display
1
R DATA 1
2
G DATA 1
3
B DATA 1
4
R DATA 2
5
G DATA 2
6
B DATA 2
905*
Dither selection
1
Dither selection
906*
Binary Threshold
1
Binary Threshold
907
VPU Test Pattern Selection
1
select any test pattern:
R
2
select any test pattern:
G
3
select any test pattern:
B
918
Manual Gamma Adjustment
932*
Picture Element Correction
1
R: Left
2
R: Right
3
B: Left
4
B: Right
Function / [ Setting ]
Adjusts the blue density when scanning with the ARDF
[–20 ∼ 20 / 0 / 1 %/step]
Adjusts the ADC reference voltage. Details are in
Replacement and Adjustment.
[ –128 ~ 127 / 49 / 1 /step]
Adjusts the ADC reference voltage.
[ –128 ~ 127 / 17 / 1 /step]
Adjusts the ADC reference voltage.
[ –128 ~ 127 / 29 / 1 /step]
Displays ACC data.
[0 ∼ 255 / 0 / 1 /step]
[0 ∼ 255 / 0 / 1 /step] DFU
Specifies the black/white threshold for binary image
processing.
[0 ∼ 255 / 128 / 1 /step]
Lower values increase the proportion of black in the
image.
[0 ∼ 4 / 0 / 1 /step]
• 0: CCD
• 1: Black
• 2: White
• 3: 15-grade gray scale
• 4: Vertical line
Please refer to section 3.13.2
Corrects the left or right side alignment of the red or blue
filter on the CCD.
[0 ∼ 9 / 5 / 1 /step]
5-29
SERVICE PROGRAM MODE

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