Canon imageCLASS MF4770n Operation Guide - Page 103

Symptom, Example, Action, Special Mode B

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Symptom Example The printed paper has vertical streaks. Smudge marks of spattering toner appear around the text or as patterns. The overall print result is dark. The bottom edge of paper has smudge marks. A portion of the page is not printed. Printed bar codes cannot be scanned. Action • Verify that the appropriate paper is being used (→p.22). • Print a test page with new paper. • If the machine is not in use for a long time after the toner cartridge has been replaced, change the settings from the operation panel. • When copying, change the settings from the operation panel. • When faxing, change the and settings from the operation panel. • When printing from a computer, change the settings from the operation panel, or change the [Special Print Adjustment] settings from the printer driver. • Verify that the appropriate paper is being used (→p.22). • Change the settings from the operation panel. • Adjust the copy density settings (→p.32). • If the machine is exposed to direct sunlight or strong light, move the machine to another location. Provide a margin around the data. Provide a margin around the data. If printing a bar code from a computer, open the printer driver and select [Finishing]  [Advanced Settings]  [Special Print Mode]  [Special Settings 1] to change the printing preferences. Troubleshooting 103

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103
Troubleshooting
Symptom
Example
Action
The printed paper has
vertical streaks.
•
Verify that the appropriate paper is being used (
→
p.22).
•
Print a test page with new paper.
•
If the machine is not in use for a long time after the toner cartridge
has been replaced, change the <
Special Mode B
> settings from
the operation panel.
•
When copying, change the <
Special Mode Z
> settings from the
operation panel.
•
When faxing, change the <
Special Mode Z
> and
<
Special Mode C
> settings from the operation panel.
•
When printing from a computer, change the <
Special Mode D
>
settings from the operation panel, or change the [
Special Print
Adjustment
] settings from the printer driver.
Smudge marks of
spattering toner
appear around the
text or as patterns.
•
Verify that the appropriate paper is being used (
→
p.22).
•
Change the <
Special Mode U
> settings from the operation panel.
The overall print result
is dark.
•
Adjust the copy density settings (
→
p.32).
•
If the machine is exposed to direct sunlight or strong light, move the
machine to another location.
The bottom edge of
paper has smudge
marks.
Provide a margin around the data.
A portion of the page
is not printed.
Provide a margin around the data.
Printed bar codes
cannot be scanned.
If printing a bar code from a computer, open the printer driver and
select [
Finishing
]
[
Advanced Settings
]
[
Special Print Mode
]
[
Special Settings 1
] to change the printing preferences.