5-6 Phaser 7400 Color Printer Service Manual1. Consistent fills in each primary color. Each color should be consistent across thewidth of the page with no voids.2. No separation or misconvergence where each bar meets its neighbor. Each bar isseparated by a thin black line.3. Look for thin white lines that would indicate a dirty LED lens or a scratchedImaging Unit.4. Look for dark lines that would indicate a dirty or damaged Imaging Unit.5. Look for complete fusing. Cold or hot offset fusing could indicate the incorrectpaper weight has been selected.Analyzing the PS PatternThis print is found in the Hidden Service menu. Things to look for include:1. Color Registration (Horizontal): The colored lines should match up. Perform thecolor registration procedure. Clean the Color Registration Sensor and cyclepower to the printer.2. Color Registration (Vertical): The colored lines should match up.3. Uniform RGB: The secondary color squares should be uniformly colored with nomottling.4. Density: The color bars should have even density from top to bottom.HDST HDSTHDST HDSTHDST HDSTHDST HDSTFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFAF530095 1120pg28°C 34%RHs7400-6541233
