Canon iR C6800 Series Service Manual page 1143

15.4.1.7 V CONT
15.4.1.7.1 Overview
Adjusting the Photosensitive Drum Surface Potential Contrast
15.4.1.7.2 <EPOTOFST>
Range of adjustment
15.4.1.8 PASCAL
15.4.1.8.1 Overview
Adjusting Auto Gradation Correction
15.4.1.8.2 <OFST P Y>
Method of adjustment
Range of adjustment
15.4.1.8.3 <OFST P M>
Method of adjustment
Range of adjustment
T-15-80
Set it to adjust the potential offset value.
300 to 300 (unit: 0.1 V)
at time of shipment/upon RAM initialization: 0
T-15-81
Use it to apply an offset value on the text print read signal (yellow) for PASCAL
control executed at time of auto gradation correction (full correction).
A higher value darkens the image after auto gradation correction (full correction).
128 to +128
[at time of shipment/after RAM initialization: 0]
T-15-82
Use it to apply an offset value on the text print read signal (magenta) for PASCAL
control executed at time of auto gradation correction (full correction).
A higher value darkens the image after auto gradation correction (full correction).
128 to +128
[at time of shipment/after RAM initialization: 0]
Chapter 15
0005-7060
0005-6738
0002-8445
0001-0208
0001-1630
15-79