Question about Canon NP 6551 Black and White Copier
Have you changed the paper or flipped the paper over yet? Have you gone to add. funcations and go to cleaning and run the wire cleaning. Also, I would clean and replace all of the corona wires.
Posted on Aug 31, 2010
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Posted on Jan 02, 2017
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Jul 16, 2014 | Xerox Phaser 7400DN Laser Printer
To adjust the default lighter/darker setting
1. On the LaserJet 3015, press MENU/ENTER.
2. Use the < or the > button to select Copy setup, and then press MENU/ENTER.
3. Use the < or the > button to select Def. Light/Dark, and then press MENU/ENTER.
4. Use the < or the > button to adjust the setting. Move the slider to the left to make all of the
copies lighter than the original, or move the slider to the right to make all of the copies
darker than the original.
5. Press MENU/ENTER to save the selection.
Page 48 of the User Guide has instructions for adjusting the light/dark setting during a copy job.
Also see the Troubleshooting section of the User Guide for other possible reasons for light/faded copies.
If your copies continue to come out too light, you may need to clean the insert a new toner cartridge or change brands of toner. I tried several "generic" toner cartridges and refills, but my prints and copies were always faded or streaky. After going back to genuine HP cartridges, I haven't had any print quality problems.
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