Canon imageRUNNER ADVANCE C5500 Series Service Manual page 879

COPIER > ADJUST > MISC
SH-ADJ 1
Detail
Use Case
Adj/Set/Operate Method
Display/Adj/Set Range
Default Value
Related Service Mode
SH-ADJ2 1
Detail
Use Case
Adj/Set/Operate Method
Display/Adj/Set Range
Default Value
Related Service Mode
■ EXP-LED
COPIER > ADJUST > EXP-LED
PR-EXP-Y 2
Detail
Use Case
Adj/Set/Operate Method
Caution
Display/Adj/Set Range
Default Value
Related Service Mode
Adj of sharpness: Copyboard, DADF front
To adjust the sharpness of image in copyboard reading mode and image on the front side in duplex
stream reading mode that is set in Settings/Registration menu.
As the value is larger, the image gets sharper. If the value is too large, moire is likely to occur in
an output image of COPY and SEND.
To match the image quality with that of the back side in the duplex stream reading mode, decrease
the value when moire on the front side is stronger than the back side and increase the value when
it is weaker.
When moire frequently occurs on images of COPY and SEND output
1) Enter the setting value (switch negative/positive by -/+ key) and press OK key.
2) Turn OFF/ON the main power switch.
-3 to 3
0
COPIER> ADJUST> MISC> SH-ADJ2
Adjustment of sharpness: DADF back side
To adjust the sharpness of image on the back side in duplex stream reading mode that is set in
Settings/Registration menu.
As the value is larger, the image gets sharper. If the value is too large, moire is likely to occur in
an output image of COPY and SEND.
To match the image quality with that of the front side in the duplex stream reading mode, decrease
the value when moire on the front side is stronger than the back side, and increase the value when
it is weaker.
When moire frequently occurs on images of COPY and SEND output
1) Enter the setting value (switch negative/positive by -/+ key) and press OK key.
2) Turn OFF/ON the main power switch.
-3 to 3
0
COPIER> ADJUST> MISC> SH-ADJ
Adj of Y Pre-exposure LED current
To adjust the current of the Cleaning Pre-exposure LED (Y).
As the current is increased, light intensity of the LED becomes strengthened so the potential of
the Photosensitive Drum is decreased.
Set 15 (the maximum current) when drum ghost (uneven density at intervals of drum
circumference) occurs.
If the image is still dark (potential is not applied well) even though adjustment has been made with
VCONT-Y or VBACK-Y, decrease the value a little at a time from 13 while checking the adjustment
result (the current is decreased in increments of approx. 7%).
- When drum ghost occurs
- When the image is still dark even though contrast potential and fogging removal potential are
adjusted
1) Enter the setting value, and then press OK key.
2) Turn OFF/ON the main power switch.
When the value is decreased too much, drum ghost may occur.
0 to 15
0: Normal, 1: OFF, 2: Approx. 7%, 3: Approx. 14%, ..., 13: Approx. 86%, 14: Approx. 93%, 15:
Approx. 100%
0
COPIER> ADJUST> V-CONT> VCONT-Y, VBACK-Y
865
8. Service Mode