Oki C910 C910 User Guide (English) - Page 84
Media Type] and [Media, Media Weight].
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Symptoms Possible causes Steps to take Horizontal Lines and spots appear periodically. White area of paper is lightly stained. Periphery of the letters is smudged. Toner comes off when it is rubbed. Glossiness is not uniform. When the interval is about 94mm (4in), the image drum (the green tube) is damaged or dirty. When the interval is about 42mm (1.5in), there may be foreign particles in the image drum cartridge. When the interval is about 87mm (3.5in), the fuser unit is damaged. The image drum cartridge has been exposed to light. Paper contains static. Too thick paper is used. The toner is low. The LED head is dirty. The thickness and type of the paper are incorrectly set. Recycled paper is used. The thickness and type of the paper are incorrectly set. Wipe it lightly with a soft cloth. Replace the image drum cartridge when it is damaged. Open/close the top cover, and print again. Replace the fuser unit. Replace the image drum cartridge if the problem is not resolved. Use paper stored in proper temperature and humidity conditions. Use thinner paper. Replace the toner cartridge. Wipe the head with LED lens cleaner or with a soft cloth. Set the correct value of [Media Type] and [Media Weight] in the menu setup or set one value thicker for [Media Weight]. Set one value thicker for [Media Weight] in the menu setup. Set the correct value of [Media Type] and [Media Weight] in the menu setup or set one value lighter for [Media Weight]. 84 - C910 Troubleshooting