Canon imageRUNNER ADVANCE 6075 Series Service Manual page 150

2
Technology > Image Formation System > Servicing > Troubleshooting
● Smeared image
[Cause]
Excess toner is transferred on the paper that causes toner collapse at the time of fixing, which
can generate smeared image on the image. The following are assumed causes of smeared
image:
• When the paper type is changed
• Toner deterioration
• Rapid change in environment (High temperature <- -> Low temperature)
[Field Remedy]
Start the field remedy
Execute Auto Adjust Gradation
Settings/Registration > Adjustment/Maintenance >
Adjust Image Quality > Auto Adjust Gradation
Is it fixed?
NO
Reduce the density
COPIER>ADJUST>V-CONT>VL-OFST; reduce the value of VL-OFST
COPIER > FUNCTION > DPC; Execute DPC
Is the density/line width fixed
within the acceptable range?
NO
Execute skipping processing (within the acceptable range for density/line width)
COPIER > OPTION > IMG-FIX > RAG-SW; set 1
COPIER > OPTION > IMG-FIX > RAG-CONT; set 1 to 3
Check the image
Complete
2 Technology > Image Formation System > Servicing > Troubleshooting
YES
YES
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[Image]
Feed Direction
< Smeared Image >
Side Line
Select the following: "Settings/Registration > Adjustment Maintenance > Adjust Image > Auto
Adjust Gradation; and check the output result.
1) COPIER > ADJUST > V-CONT > VL-OFST; set the value of VL-OFST to 10
2) Select the following: COPIER > FUNCTION > DPC; execute DPC and then check the
output result.
3) If the symptom is not improved, further increase the value in step 1) to 20, 30...and then
execute step 2).
CAUTION :
Changing the above setting can cause reduced density or thinner line
If the smeared image is not improved within the acceptable range for density and line width,
execute skipping process in the following procedure:
1) COPIER > OPTION > IMG-FIX > RAG-SW; change the value to 1
2) COPIER > OPTION > IMG-FIX > RAG-CONT; change to 1 and check the output result.
3) If the symptom is not improved, change the value in step 2) to 2, 3...and check the output
result.
CAUTION :
Changing the above setting can cause minor skipping in the text part.
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