Adjustment/Maintenance

NOTE
Menu options in the following chart:
Default settings are highlighted in bold.
The setting marked with "*" is only for MF4890dw/MF4870dn/MF4780w/MF4750.

Special Processing

Settings
Descriptions
Special Mode U
Set whether or not to reduce spots of scattered toner on the printed paper, especially when using thick paper or operating in a dry environment:
Off, On
Special Mode V
Set the level to reduce paper curl or crease:
Off, Mode 1, Mode 2, Mode 3
Special Mode Z
Set the level to reduce vertical streaks on the printed paper when copying or printing received documents:
Copy: Off, Mode 1, Mode 2, Mode 3, Mode 4
Fax*: Off, Mode 1, Mode 2, Mode 3, Mode 4
Special Mode B
Set the level to reduce vertical streaks on the printed paper when using a toner cartridge after a long time or after replacing the toner cartridge:
Off, Mode 1, Mode 2, Mode 3
Special Mode C*
Set whether or not to reduce vertical streaks on the printed paper or printing noise:
Off, On
Special Mode D
Set whether or not to reduce vertical streaks on the printed paper or printing noise when copying or printing:
Copy: Off, On
Print: Off, On
Special Mode I
Set this setting to <On>, when paper jams may occur frequently when performing 2-sided printing:
Off, On
Special Mode J
Set this setting to <On>, when printed paper is spotted when printing thin lines or light images:
Off, On
Special Mode K
Set this setting to <On>, when toner is not fixed sufficiently especially in a low temperature environment:
Off, On

Clean Fixing Unit

If black streaks appear on printed paper, clean the fixing unit when replacing toner cartridges.
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