Canon imageRUNNER ADVANCE 9070 PRO series Service Manual Digest page 438

COPIER> ADJUST> V-CONT
VDGAIN-Y Adj of Y color charging DC voltage
Lv.2 Details To adjust the offset of the charging DC voltage Vd for Y.
As the value is incremented by 1, the voltage changes by 10 V.
Increase the gain when the density is low and decrease the gain
when the density is high or an spotted image occurs.
Use case • At the occurrence of an image density failure
• At the occurrence of a spotted image
Adj/set/operate method Enter the setting value, and then press OK key.
Caution Do not use this when the machine is operating correctly.
Display/adj/set range -10 to 10
Unit 10 V
Default value 0
Required time 1 minute
Related service mode COPIER> ADJUST> V-CONT> VDGAIN-M, VDGAIN-C
VDGAIN-M Adj of M color charging DC voltage
Lv.2 Details To adjust the offset of the charging DC voltage Vd for M.
As the value is incremented by 1, the voltage changes by 10 V.
Increase the gain when the density is low and decrease the gain
when the density is high or an spotted image occurs.
Use case • At the occurrence of an image density failure
• At the occurrence of a spotted image
Adj/set/operate method Enter the setting value, and then press OK key.
Caution Do not use this when the machine is operating correctly.
Display/adj/set range -10 to 10
Unit 10 V
Default value 0
Required time 1 minute
5
Related service mode COPIER> ADJUST> V-CONT> VDGAIN-Y, VDGAIN-C
VDGAIN-C Adj of C color charging DC voltage
Lv.2 Details To adjust the offset of the charging DC voltage Vd for C.
As the value is incremented by 1, the voltage changes by 10 V.
Increase the gain when the density is low and decrease the gain
when the density is high or an spotted image occurs.
Use case • At the occurrence of an image density failure
• At the occurrence of a spotted image
Adj/set/operate method Enter the setting value, and then press OK key.
Caution Do not use this when the machine is operating correctly.
Display/adj/set range -10 to 10
Unit 10 V
Default value 0
Required time 1 minute
Related service mode COPIER> ADJUST> V-CONT> VDGAIN-Y, VDGAIN-M
5-210
COPIER> ADJUST> V-CONT
LPGAIN-Y Adjustment of Y color laser power
Lv.2 Details To adjust the offset of the laser power for Y.
As the value is incremented by 1, the laser power changes by 4 Hex.
Increase the gain when the density is low and decrease the gain
when the density is high or a spotted image occurs.
Use case • At the occurrence of an image density failure
• At the occurrence of a spotted image
Adj/set/operate method Enter the setting value, and then press OK key.
Caution Do not use this when the machine is operating correctly.
Display/adj/set range -30 to 30
Unit 4 Hex
Default value 0
Required time 1 minute
Related service mode COPIER> ADJUST> V-CONT> LPGAIN-M, LPGAIN-C
LPGAIN-M Adj of M color laser power gain
Lv.2 Details To adjust the offset of the laser power for M.
As the value is incremented by 1, the laser power changes by 4 Hex.
Increase the gain when the density is low and decrease the gain
when the density is high or a spotted image occurs.
Use case • At the occurrence of an image density failure
• At the occurrence of a spotted image
Adj/set/operate method Enter the setting value, and then press OK key.
Caution Do not use this when the machine is operating correctly.
Display/adj/set range -30 to 30
Unit 4 Hex
Default value 0
Required time 1 minute
Related service mode COPIER> ADJUST> V-CONT> LPGAIN-Y, LPGAIN-C
LPGAIN-C Adj of C color laser power gain
Lv.2 Details To adjust the offset of the laser power for C.
As the value is incremented by 1, the laser power changes by 4 Hex.
Increase the gain when the density is low and decrease the gain
when the density is high or a spotted image occurs.
Use case • At the occurrence of an image density failure
• At the occurrence of a spotted image
Adj/set/operate method Enter the setting value, and then press OK key.
Caution Do not use this when the machine is operating correctly.
Display/adj/set range -30 to 30
Unit 4 Hex
Default value 0
Required time 1 minute
Related service mode COPIER> ADJUST> V-CONT> LPGAIN-Y, LPGAIN-M