Xerox 6250N Service Manual - Page 197

Missing Band, Voids Or Streaks In a Single Color or All Colors Parallel to the Leading Edge There are areas of the image that are extremely light or missing entirely. These missing areas form bands parallel to the leading edge. Troubleshooting Procedure S6200-273 Step 1 2 3 4 5 6 7 Check Yes No Is the 600 x 600 test pattern, printed as specified in "Print Engine Test Print" on page 5-9, correct? Replace the Image Processor Board, page 8-110. Is the paper wrinkled, dimpled or show any signs of having a high moisture content? Is the problem resolved by loading fresh dry paper? Complete Print a Repeating Defects Page. Do the defects correspond to a Routine Maintenance Item? See "Repeating Defects" on page 5-3 Replace the indicated Routine Maintenance Items. Replace the Imaging Unit PL 9.1. Does the image quality improve if the Imaging Unit is replaced? Complete Replace the Transfer Roller, PL 8.112. Does the image quality improve if the Transfer Roller is replaced? Complete Replace the Fuser Assembly, PL 8.1.1. Does the image quality improve if the Fuser is replaced? Complete Check the following pins for continuity; J5030 and J5020 Transfer Roller. Go to Step 8. Go to Step 2. Go to Step 3. Go to Step 4. Go to Step 5. Go to Step 6. Go to Step 7. Replace the defective wire. 5-16 Phaser 6250 Color Laser Printer Service Manual