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1. Do not use media that has already been run through the device.
2. Try using a different type of media.
3. Print a few more pages to see if the problem corrects itself.
4. Turn over the stack of media in the tray. Also, try rotating the stack 180°.
5. Open the CONFIGURE DEVICE menu at the device control panel. On the PRINT QUALITY
submenu, increase theTONER DENSITY setting. See the user guide.
6. Make sure that the environmental specifications for the device are being met. (See Operating
environment on page 246.)
7. Replace the print cartridge.
8. The power supply might be defective. Replace the power supply (see High-voltage power
supply on page 97).
Toner smear
1. Print a few more pages to see if the problem corrects itself.
2. Try using a different type of media.
3. Make sure that the environmental specifications for the device are being met. (See Operating
environment on page 246.)
4. Clean the inside of the device and run a cleaning page to clean the fuser. (See Clean the device
on page 36.)
5. Replace the print cartridge.
6. The fuser might be defective. Replace the fuser (see Fuser on page 83).
7. The ECU might be defective. Replace the ECU (see Engine control unit (ECU) on page 88).
Also see
Loose toner on page 183.
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