Canon imageRUNNER ADVANCE C2030 Service Manual page 614

COPIER > ADJUST > V-CONT
VCONT-C Adj of C color contrast potential
Lv.2 Details To adjust the contrast potential for C.
As the value is incremented by 1, the contrast potential changes by
10V.
+: Image becomes darker.
-: Image becomes lighter.
When the value is too large, paper winds around the Fixing Roller or
a transfer failure occurs.
In a low humidity environment (e.g. winter in North America or
Japan), the output may not be changed by increasing the value.
In principle, the adjustment of the density should be performed in
Adjustment/Maintenance> Adjust Image Quality> Density Adjustment
Mode.
Use case When adjusting the density of D-max control in the case that an
image density failure occurs
Adj/set/operate method 1) Enter the setting value (switch negative/positive by -/+ key) and
press OK key.
2) Execute Auto Adjust Gradation > Full Adjust.
Caution Do not use this when the machine is operating correctly.
Display/adj/set range -5 to 5
Unit 10 V
Default value 0
Related service mode COPIER> ADJUST> V-CONT> VCONT-Y, VCONT-M, VCONT-K
Related user mode Adjustment/Maintenance> Adjust Image Quality> Auto Adjust
Gradation > Full Adjust
Adjustment/Maintenance> Adjust Image Quality> Density Adjustment
Mode
8
Service Mode > COPIER > ADJUST > V-CONT
8 Service Mode > COPIER > ADJUST > V-CONT
COPIER > ADJUST > V-CONT
VCONT-K Adj of Bk color contrast potential
Lv.2 Details To adjust the offset of the contrast potential Vcont for Bk.
As the value is incremented by 1, the contrast potential changes by
10V.
+: Image becomes darker.
-: Image becomes lighter.
When the value is too large, paper winds around the Fixing Roller or
a transfer failure occurs.
In a low humidity environment (e.g. winter in North America or
Japan), the output may not be changed by increasing the value.
In principle, the adjustment of the density should be performed in
Adjustment/Maintenance> Adjust Image Quality> Density Adjustment
Mode.
Use case When adjusting the density of D-max control in the case that an
image density failure occurs
Adj/set/operate method 1) Enter the setting value (switch negative/positive by -/+ key) and
press OK key.
2) Execute Auto Adjust Gradation > Full Adjust.
Caution Do not use this when the machine is operating correctly.
Display/adj/set range -5 to 5
Unit 10 V
Default value 0
Related service mode COPIER> ADJUST> V-CONT> VCONT-Y, VCONT-M, VCONT-C
Related user mode Adjustment/Maintenance> Adjust Image Quality> Auto Adjust
Gradation > Full Adjust
Adjustment/Maintenance> Adjust Image Quality> Density Adjustment
Mode
VBACK-Y Adj Y color fogging removal potential
Lv.2 Details To adjust the offset of the fogging removal potential Vback for Y.
As the value is incremented by 1, the fogging removal potential
changes by 10 V.
+: Fogging is alleviated.
-: Coarse image, blanking of image edge, and carrier adherence
are alleviated.
In a low humidity environment (e.g. winter in North America or
Japan), the output may not be changed by increasing the value.
Use case At the occurrence of Y fogging
Adj/set/operate method 1) Enter the setting value (switch negative/positive by -/+ key) and
press OK key.
2) Execute Auto Adjust Gradation > Full Adjust.
Caution Do not use this when the machine is operating correctly.
Display/adj/set range -8 to 3
Unit 10 V
Default value 0
Related service mode COPIER> ADJUST> V-CONT> VBACK-M, VBACK-C, VBACK-K
Related user mode Adjustment/Maintenance> Adjust Image Quality> Auto Adjust
Gradation > Full Adjust
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