Xerox 4400DT Service Manual - Page 159

Horizontal Deletions Troubleshooting Procedure Step Actions and Questions Yes No 1 1. Enter Service Diagnostics and select Engine Test Go to step 3. Go to step 2. Print. 2. Scroll to Print Quantity and press OK. 3. Select 5, then press OK. 4. Scroll to Print Test Pattern and press OK. Do the prints have horizontal deletions? 2 1. Exit Service Diagnostics. Remove and The problem 2. When the printer has restarted, select Printable Pages Menu. 3. Scroll to Print Configuration Pages and press OK. reseat the Image Processor appears to be with the host Do the prints have horizontal deletions? Board. If the computer or problems the cables. If persist, the problems replace the persist, Image replace the Processor Image Board (RRP Processor 9.2 on Board (RRP page 6-88). 9.2 on page 6-88). 3 1. Load fresh, dry paper. 2. Print a test print. Is the problem still present? Go to step 4. Problem solved. 4 1. Install a new Print Cartridge. 2. Print a test print. Is the problem still present? Go to step 5. Problem solved. 5 Inspect the Transfer Roller Assembly for contamination Go to step 6. Replace the and wear. Transfer Is the Transfer Roller free of contamination and wear? Roller Assembly (RRP 7.1 on page 6-79). 6 1. Select the Printable Pages Menu, scroll to Print Test Go to step 7. Go to Prints, and press OK. High-Voltage 2. Switch OFF the printer power halfway through the print cycle. 3. Carefully remove the Print Cartridge and inspect the toner image on the drum just before the transfer area (Transfer Roller). Is the image on the drum completely developed Power Supply (HVPS) Assembly on page 3-31. with sharp, black, easy-to-read areas and no horizontal deletions? 7 Inspect the toner image on the drum immediately after Go to step 8. Go to the transfer area (Transfer Roller). High-Voltage Was the toner image on the drum transferred to the paper? Power Supply (HVPS) Assembly on page 3-31. 3-62 Phaser 4400 Laser Printer Service Manual