5-4 Troubleshooting
Black or white vertical streaks Check the operation panel for toner.
If the Toner low C,M,Y,K message is displayed with color description,
install a new toner kit for the color. To replace the toner container, refer to
Toner Container Replacementon page 4-2.
Clean the main charger units.
For details, refer to LSU/Charger (LSU/Main charger cleaning mode
setting) section of the Advanced Operation Guide.
Refresh drum.
Perform the following procedures on the operation panel and try cleaning
the drum surface using the printer's built-in cleaning system.
1Press [MENU].
2Press U or V repeatedly until Adjust/Maintenance > appears.
3Press Z. Press U or V repeatedly until >Service > appears.
4Press Z. Press U or V repeatedly until >>Drum appears.
5Press [OK] twice.
6The message display shows Please wait. After approx. 3 minutes,
the display returns to Ready.
Faint or blurred printing Clean the main charger units.
For details, refer to LSU/Charger (LSU/Main charger cleaning mode
setting) section of the Advanced Operation Guide.
Make sure the paper type setting is correct the paper being used.
For details, refer to Paper Settings section of the Advanced Operation
Guide.
Conduct color calibration either by switching the printer off then on or using
the printer operation panel.
For details, refer to Color Calibration section of the Advanced Operation
Guide.
Try adjusting the color control settings using the printer driver.
Check the operation panel. If the Toner low C,M,Y,K message is
displayed with color description, install a new toner kit for the color. To
replace toner, refer to Toner Container Replacementon page 4-2.
Refresh drum.
Perform the following procedures on the operation panel and try cleaning
the drum surface using the printer's built-in cleaning system.
1Press [MENU].
2Press U or V repeatedly until Adjust/Maintenance > appears.
3Press Z. Press U or V repeatedly until >Service > appears.
4Press Z. Press U or V repeatedly until >>Drum appears.
5Press [OK] twice.
6The message display shows Please wait. After approx. 3 minutes,
the display returns to Ready.
Printed Results Corrective Action
Direction
of Paper
Feed