Example defective advance plot This defect has the follow possible causes: Print Quality • OMAS is not clean or is defective so you should repeat the plot with OMAS disabled. This will allow you to establish if this is an OMAS related fault. If the same fault is detected the problem cannot be attributed to OMAS. • The Drive roller is not clean so it slips against the media. • Any other component affecting the media advance: • Spindle/Back Tension • Input roller • Pinchwheels 0.6 to 0.7 mm 0.6 to 0.7 mm How to Use the Image Quality Service Diagnostic Print 197