Canon imageRUNNER ADVANCE 9070 PRO series Service Manual Digest page 439

COPIER> ADJUST> V-CONT
VBACK2-Y Adj Y fogging removal potential: 1/2SPD
Lv.2 Details To adjust the fogging removal potential Vback for Y at 1/2 speed.
+: Fogging is alleviated, but white/black spots are increased
due to carrier adherence.
-: White/black spots are alleviated, but fogging is increased.
Use case When any image failure occurs at 1/2 speed
Adj/set/operate method 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 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> VBACK2-M, VBACK2-C, VBACK2-K
Related user mode Adjustment/Maintenance> Adjust Image Quality> Auto Adjust
Gradation > Full Adjust
Adjustment/Maintenance> Adjust Image Quality> Correct Color Cast
VBACK2-M Adj M fogging removal potential: 1/2SPD
Lv.2 Details To adjust the fogging removal potential Vback for M at 1/2 speed.
+: Fogging is alleviated, but white/black spots are increased
due to carrier adherence.
-: White/black spots are alleviated, but fogging is increased.
Use case When any image failure occurs at 1/2 speed
Adj/set/operate method 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 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> VBACK2-Y, VBACK2-C, VBACK2-K
Related user mode Adjustment/Maintenance> Adjust Image Quality> Auto Adjust
Gradation > Full Adjust
Adjustment/Maintenance> Adjust Image Quality> Correct Color Cast
COPIER> ADJUST> V-CONT
VBACK2-C Adj C fogging removal potential: 1/2SPD
Lv.2 Details To adjust the fogging removal potential Vback for C at 1/2 speed.
+: Fogging is alleviated, but white/black spots are increased
due to carrier adherence.
-: White/black spots are alleviated, but fogging is increased.
Use case When any image failure occurs at 1/2 speed
Adj/set/operate method 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 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> VBACK2-Y, VBACK2-M, VBACK2-K
Related user mode Adjustment/Maintenance> Adjust Image Quality> Auto Adjust
Gradation > Full Adjust
Adjustment/Maintenance> Adjust Image Quality> Correct Color Cast
VBACK2-K Adj Bk fogging removal potential: 1/2SPD
Lv.2 Details To adjust the fogging removal potential Vback for Bk at 1/2 speed.
+: Fogging is alleviated, but white/black spots are increased
due to carrier adherence.
-: White/black spots are alleviated, but fogging is increased.
Use case When any image failure occurs at 1/2 speed
Adj/set/operate method 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 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> VBACK2-Y, VBACK2-M, VBACK2-C
Related user mode Adjustment/Maintenance> Adjust Image Quality> Auto Adjust
Gradation > Full Adjust
Adjustment/Maintenance> Adjust Image Quality> Correct Color Cast
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