Xerox 8500DN Service Manual - Page 147

General Troubleshooting Wiper Shaft (Continued) R# Definition 4 CCW On fe ripple. Typical Value (8400) 25 to 100 5 CCW Off fe setting 0.004 to time (sec). 0.15 6 Time to CW On peak fe (sec). 0.005 to 0.20 7 CW On peak fe. -275 to -10 8 CW On fe settling -10 to 1 time (sec). Typical Value (8500/ 8550/8560) Actions .08 to .31 Reports the variation of effort needed to rotate the wiper shaft in the CCW direction at a constant velocity. A larger value could indicate particles in the gears or non uniform contamination of a roller (causing a lump). .015 to .20 Reports the time it takes the MP motor servo system to "settle down" after the sudden release of the wiper shaft load. A larger value may show a dragging or slow to release clutch. .02 to .045 Reports how long it takes the MP motor servo system to react to the sudden addition of the wiper shaft load. Larger values may indicate a slipping or slow to engage clutch. -.15 to 0.4 Reports the peak effort required to accelerate the wiper shaft load. A smaller value could indicate a slipping clutch. -.04 to .23 Reports the time it takes the MP motor servo system to "settle down" following the sudden addition of the wiper shaft load. A longer time could indicate a looseness in the wiper shaft assembly or a slipping clutch. Phaser 8400/8500/8550/8560 Color Printer Service Manual 4-17