Xerox 4400DT Service Manual - Page 169

Damaged Print Troubleshooting Procedure (cont'd.) Step Actions and Questions Yes 5 Inspect all of the rollers along the paper path, between the feed tray and the exit tray, for contamination, wear or damage. Are the paper path rollers free of contamination, wear, or damage? Go to step 6. 6 1. Install a new Print Cartridge. 2. Print a Test Print. Is the print still damaged? Go to step 7. 7 Replace the following, in order, until the defective component is found: I RRP 6.2 Fuser Assembly on page 6-66 I RRP 6.1 Transport Chute Assembly on page 6-65 I RRP 7.1 Transfer Roller Assembly on page 6-79 I RRP 4.1 MPT Chute Assembly on page 6-44 I RRP 4.7 Retard Pad Assembly on page 6-52 I RRP 11.8 Turn Roller Assembly on page 6-127 I RRP 11.11 Paper Feed Rolls on page 6-130 I RRP 4.4 Bottom Tray Assembly on page 6-48 No Replace the damaged or worn roller. Problem solved. Resolution The two pixel lines and halftone patches cannot be reproduced clearly on the print. Initial Actions I Ensure the NVRAM Laser Power adjustment is set to the default, which is 10. Resolution Troubleshooting Procedure Step Actions and Questions Yes No 1 1. Install a new Print Cartridge (PL 8.1 Drive and Xerographics on page 7-20). 2. Print a Test Print. Is the Test Print output resolution good? 2 Replace the following, in order, until the defective component is found: I Laser Assembly (RRP 7.4 on page 6-82) I HVPS PWB (RRP 9.6 on page 6-92) Problem solved. Go to step 2. 3-72 Phaser 4400 Laser Printer Service Manual