Xerox 4400DT Service Manual - Page 138
Image-Quality Checkout Procedures, Image-Quality Defect Definitions
View all Xerox 4400DT manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 138 highlights
Image-Quality Checkout Procedures Index of Image-Quality Checkout Procedures Deletions (Line, Band, Spots 3-44 Fusing 3-45 Resolution 3-46 Registration (Side-to-Side 3-47 Registration (Lead Edge-to-Trail Edge 3-48 Skew 3-49 Skips / Smears 3-50 Spots 3-51 Other Print Defects 3-52 Throughout these procedures, the term "vertical" refers to the process direction (the direction paper travels through the printer); the term "horizontal" refers to the scanning direction (the direction the laser beam scans across the page). Cleaning procedures should always be performed before beginning any Image-quality Repair procedure. Be sure that the paper meets printer specifications. Changing the paper, or using paper from a previously unopened ream, will resolve many print-quality issues. Begin with Deletions (Line, Band, Spots) on page 3-44. Image-Quality Defect Definitions The Test Print (shown on page 3-43) is used to evaluate each of the print-quality parameters. Each area of the test pattern is used for a print-quality parameter. The Image-quality Checkout procedures explain each of the areas and the print-quality parameters. Further assistance in evaluating image-quality problems is available in the Diagnostics Pages on the Printable Pages Menu. These pages contain detailed explanations of print-quality and image-quality problems along with possible causes and solutions for the problems. Image-Quality Defect Definitions Defect Definitions Go To: LIGHT PRINTS: The overall image density is too light. page 3-54 BLANK PRINTS: Prints with no visible image. page 3-56 BLACK PRINTS: The print is completely covered with toner and has no visible image. page 3-58 VERTICAL DELETIONS: There are areas of the image that are extremely light or missing entirely. These areas run vertically along the page in the direction of paper movement. page 3-59 HORIZONTAL DELETIONS: There are areas of the image that are extremely page 3-61 light or missing entirely. These areas run horizontally across the page in the direction of scanning. Phaser 4400 Laser Printer Service Manual 3-41