Xerox C2424 Service Manual - Page 177
Wiper Shaft, Deskew Shaft, Continued
UPC - 095205676532
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Deskew Shaft (Continued) Runs the media path drive train and engages the deskew clutch on the fly then disengages the clutch. The test is repeated in both directions to determine clutch characteristics, steady state drive requirements, bearing status, etc. R# Definition Typical Value Actions 7 CW On peak fe. -950 to -450 Reports the peak effort required to accelerate the deskew shaft load. A smaller value could indicate a slipping clutch. 8 CW On fe settling time (sec). 0.010 to 0.20 Reports the time it takes the MP motor servo system to "settle down" after the sudden addition of the deskew shaft load. A longer time could indicate a looseness in the deskew shaft assembly or a slipping clutch. 9 CW On average fe. -560 to -261 Reports the average effort required to rotate the deskew shaft in the CW direction at a constant velocity. A unusual value could indicate a difference in the composition and/or number of the rollers, the nip pressure, or out of range mechanical dimensions due to wear or contamination (such as paper dust increasing the effective diameter of a roller). 10 CW On fe ripple. 83.0 to 307 Reports the variation of effort required to rotate the deskew shaft in the CW direction at a constant velocity. A larger value could indicate particles in the gears or non uniform contamination of a roller (causing a lump). 11 CW Off fe settling time (sec). 0.01 to 0.20 Reports the time it takes the MP motor servo system to "settle down" after the sudden release of the deskew shaft load. A larger value could indicate a dragging or slow to release clutch. Wiper Shaft Runs the media path drive train and engages the head maintenance clutch on the fly then disengages the clutch. The test is repeated in both directions to determine clutch characteristics, steady state drive requirements, bearing status, etc. R# Definition 0 Time to CCW On peak fe (sec). Typical Value 0.66 to 0.69 Actions 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. General Troubleshooting 4-19