Xerox 8500DN Service Manual - Page 143

General Troubleshooting Drum Heater Relay (Continued) R# Definition Typical Value (8400) 6 110 V Coil Average Power (watts) 7 110 V Coil Min Power (watts) 8 110 V Coil Peak Power Time (sec) 9 110 V Coil Initial Average Power (watts) Typical Value (8500/ 8550/8560) Actions .2 to 1.0 Reports the average power during the constant portion of the profile. .2 to .45 Reports the min power following power off. Reports time after solenoid power on that the peak power occurred. Reports the average power following power on. Check Shafts Menu 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 Deskew Shaft R# Definition Typical Value (8400) Typical Value (8500/ 8550/8560) Actions 0 Time to CCW On peak fe (sec). 0.01 to 0.04 .01 to.04 1 CCW On peak fe. 540 to 750 2.0 to 8.0 2 CCW On fe settling 0.017 to 0 to .2 time (sec). 0.21 Reports how long it takes the MP motor servo system to react to the sudden addition of the deskew shaft load. Larger values may show a slipping/slow to engage clutch. Reports peak effort needed to accelerate the deskew shaft load. A smaller value could indicate a slipping clutch. 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. Phaser 8400/8500/8550/8560 Color Printer Service Manual 4-13