Canon MF720 Series, Service Manual, Page: 290 / 327

COPIER > FUNCTION > SYSTEM
Item Description
Adj/set/operate method 1. Install the USB memory.
2. Select the item, and then press Yes.
3. Turn OFF and the ON the main power.
Caution Do not turn OFF / ON the power before "Executing..." disappears.
EXPORT
Title
Writing of service mode setting value to USB memory
Details To write the service mode setting values (excluding those related to Reader/ADF) to the USB mem-
ory.
Use case When replacing the Main Controller PCB as a measure against failures
Adj/set/operate method 1. Install the USB memory.
2. Select the item, and then press Yes.
Caution "Executing..." disappears when writing is completed.
■ VIFFNC
COPIER > FUNCTION > VIFFNC
Item Description
SMEAR-PV
Title
Execution of image smear prevention mode
Details To execute the image smear prevention mode. Depending on the paper type or environment (especially in a
high humidity environment), thin line or fine halftone may become lighter.
In this case, execute the image smear prevention mode (rotate the drum for 60 seconds after toner ejection
of all colors).
Use case When thin line or fine halftone becomes lighter
Adj/set/operate method Enter the value, and then press Apply key.
Display/adj/set range
0 to 1
0 : OFF
1 : ON
Default value 0
FEED-IMP
Title
Execution of pickup jam reduction mode
Details When using paper with which double feed is more likely to occur, pickup operation cannot be performed at
the appropriate timing because of double feed. As a result of that, pickup delay jam may occur.
In this case, extend the pickup interval.
Jam occurrence can be prevented, but productivity decreases.
Use case When pickup jam occurs with paper with which double feed is more likely to occur
Adj/set/operate method Enter the value, and then press Apply key.
Caution
Be sure to get approval from the user by telling that the productivity decreases to prevent jam occurrence.
Display/adj/set range 0 to 1
0 : OFF
1 : ON
Default value 0
FOG-PV
Title
Execution of image fogging prevention mode 2
Details To execute the image fogging prevention mode 2 (the following 4 processing) when fogging which looks like
fine vertical lines occurs on the image.
• Toner ejection of all colors
• Rotation of the drum for 60 seconds
• Offset of charging
• Cleaning sequence for talc paper
Use case When fogging which looks like fine vertical lines occurs
Adj/set/operate method Enter the value, and then press Apply key.
Display/adj/set range
0 to 1
0 : OFF
1 : ON
Default value 0
Related service mode COPIER > FUNCTION > SPLMAN > SPL14682
8. Service Mode
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