Image QualityXerox Internal Use Only Phaser 3320 and WorkCentre 3315/3325Service Manual3-23Test PrintsThe Test Pattern pages are available for troubleshooting print quality defects and to confirm properprinter operation. Printing the Test Pattern is useful for stimulating asynchronous (dynamic) eventsrelated to the print process, or as a test for media path and media related problems. Some other keyfeatures of test prints:• Is the only diagnostic utility to exercise the entire print cycle.• They are isolated from the operating system, and are run from firmware.• Captures static or dynamic events.• Helps to isolate events that cause print artifacts or prevent printing.Test Pattern 1 and Test Pattern 2 are essentially the same but for different media sizes (Letter/A4). Thetest print provides a variety of different line styles in both process and cross-process directions. Thepattern is used to check registration, dot size, and image density.PatternNumber Description Purpose1 Letter page size testpattern.Light density uniformity, deletions, lines, bands, streaks,smears, solid area reproducibility, motion quality (LSU).2 A4 page size test pattern. Light density uniformity, deletions, lines, bands, streaks,smears, solid area reproducibility, motion quality (LSU).Test PrintWC 3315/3325A4 (LEF Only)LEAD EDGETest PrintWC 3315/33258.5x11 (LEF Only)LEAD EDGEs3320-120
