Xerox 4400DT Service Manual - Page 165
Spots, Check that rollers and other components in the paper path are clean
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Spots There are spots of toner randomly scattered on the page. Initial Actions I Check that the paper supply is clean, dry and fresh (recycled paper may have spots). I Ensure there are no obstructions in the Laser path. I Inspect the printer paper path for items such as staples, paper clips and paper scraps. I Check installation of the Print Cartridge. I Check that the Print Cartridge ground contacts (on the right side of the Print Cartridge and in the Print Cartridge Side Guide in the printer) are clean. I Check that rollers and other components in the paper path are clean and unobstructed. Spots Troubleshooting Procedure Step Actions and Questions Yes No 1 1. Install a new Print Cartridge. 2. Print a Test Print. Are the spots gone? Problem solved. Go to step 2. 2 Inspect the Transfer Roller Assembly for contamination Go to step 3. Replace the and wear. Transfer Is the Transfer Roller free of contamination and wear? Roller Assembly (RRP 7.1 on page 6-79). 3-68 Phaser 4400 Laser Printer Service Manual
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