Canon imageRUNNER ADVANCE C350 series Service Manual page 503

5
Adjustment > Document Exposure System > Original Exposure and Feed System (Reader) > ADF Unit
Fine adjustment of the image magnification ratio at ADF reading (back side)
1) Set the image of the test chart downward in ADF, and give one sheet of copy.
2) Compare the image length of the feed direction of the test chart and the copy of the test
chart.
Carry out the following process when adjustment is necessary.
3) Select the item in the service mode.
LV. FEEDER > ADJUST >
1
4) Input value, and adjust an image.
• When a copied image is long: Increase value (The feeding speed increases)
• When a copied image is short: Decrease value (The feeding speed decreases)
• Adjustment unit: 0.1 %
< When a copied image moves to the rear >
Test chart
Copy of the test chart
A
Leading edge Trailing edge
of the feeding of the feeding
direction direction
5) Write the new changed value in the service label.
6) Exit the service mode.
5 Adjustment > Document Exposure System > Original Exposure and Feed System (Reader) > ADF Unit
LA-SPD2
T-5-43
< When a copied image moves to the front >
Test chart
Copy of the test chart
A
Leading edge Trailing edge
of the feeding of the feeding
direction direction
Adjustment the White Level for ADF Scanning
1) Take the action stated below in the service mode (White level adj in book/DADF mode).
1. Place a sheet of paper that the user usually uses on the Copyboard Glass, enter the
following servicemode.
LV.
1
White level adj in book mode: color
2. Place a sheet of paper that the user usually uses on the DADF, enter the following
servicemode.
LV.
1
White level adj in DADF mode:
NOTE:
The result of the adjustment is reflected to COPIER> ADJUST> CCD> DFTAR-R/
DFTAR-G/ DFTAR-B / DFTAR2-R/ DFTAR2-G/ DFTAR2-B / DFTAR3-R/ DFTAR3-G/
c o l o r
DFTAR3-B
F-5-26
COPIER > FUNCTION > CCD >
DF-WLVL1
T-5-44
COPIER > FUNCTION > CCD >
DF-WLVL2
T-5-45
5-14
5-14