Canon imageRUNNER ADVANCE C5500 Series Service Manual page 833

■ V-CONT
COPIER > ADJUST > V-CONT
VCONT-Y 2
Detail
Use Case
Adj/Set/Operate Method
Caution
Display/Adj/Set Range
Unit
Default Value
Related Service Mode
Additional Functions
Mode
Amount of Change per
Unit
VCONT-M 2
Detail
Use Case
Adj/Set/Operate Method
Caution
Display/Adj/Set Range
Unit
Default Value
Related Service Mode
Additional Functions
Mode
Amount of Change per
Unit
Adj of Y-color contrast potential
To adjust the contrast potential Vcont for Y-color.
As the value is changed by 1, the contrast potential is changed by 10 V.
+: Image becomes darker.
-: Image becomes lighter.
When the value is too large, paper winds around the Fixing Roller or a transfer failure occurs.
In principle, adjustment of the density should be made by auto gradation adjustment (full
adjustment). However, if the adjustment cannot be executed, use this item as a temporary
measure.
When density is not appropriate even though auto gradation adjustment (full adjustment) is
executed
1) Enter the setting value (switch negative/positive by -/+ key) and press OK key.
2) Turn OFF/ON the main power switch.
3) Execute auto gradation adjustment (full adjustment).
Do not use this when the machine is operating correctly.
-20 to 20
V
0
COPIER> ADJUST> V-CONT> VCONT-M/C/K
Adjustment/Maintenance> Adjust Image Quality> Auto Adjust Gradation> Full Adjust
10
Adj of M-color contrast potential
To adjust the contrast potential Vcont for M-color.
As the value is changed by 1, the contrast potential is changed by 10 V.
+: Image becomes darker.
-: Image becomes lighter.
When the value is too large, paper winds around the Fixing Roller or a transfer failure occurs.
In principle, adjustment of the density should be made by auto gradation adjustment (full
adjustment). However, if the adjustment cannot be executed, use this item as a temporary
measure.
When density is not appropriate even though auto gradation adjustment (full adjustment) is
executed
1) Enter the setting value (switch negative/positive by -/+ key) and press OK key.
2) Turn OFF/ON the main power switch.
3) Execute auto gradation adjustment (full adjustment).
Do not use this when the machine is operating correctly.
-20 to 20
V
0
COPIER> ADJUST> V-CONT> VCONT-Y/C/K
Adjustment/Maintenance> Adjust Image Quality> Auto Adjust Gradation> Full Adjust
10
819
8. Service Mode