Phaser 8400/8500/8550/8560 Color Printer Service Manual 4-13General TroubleshootingCheck Shafts MenuRuns the Media Path Drive train and engages the Deskew Clutch on the flythen disengages the clutch. The test is repeated in both directions todetermine clutch characteristics, steady state drive requirements, bearingstatus, etc6 110 V Coil AveragePower (watts).2 to 1.0 Reports the average powerduring the constant portion ofthe profile.7 110 V Coil MinPower (watts).2 to .45 Reports the min powerfollowing power off.8 110 V Coil PeakPower Time (sec)Reports time after solenoidpower on that the peak poweroccurred.9 110 V Coil InitialAverage Power(watts)Reports the average powerfollowing power on.Deskew ShaftR# DefinitionTypicalValue(8400)TypicalValue(8500/8550/8560) Actions0 Time to CCW Onpeak fe (sec).0.01 to0.04.01 to.04 Reports how long it takes theMP motor servo system toreact to the sudden addition ofthe deskew shaft load.Larger values may show aslipping/slow to engageclutch.1 CCW On peak fe. 540 to 750 2.0 to 8.0 Reports peak effort needed toaccelerate the deskew shaftload. A smaller value couldindicate a slipping clutch.2 CCW On fe settlingtime (sec).0.017 to0.210 to .2 Reports the time it takes theMP motor servo system to"settle down" after the suddenaddition of the deskew shaftload.A longer time could indicate alooseness in the deskew shaftassembly or a slipping clutch.Drum Heater Relay (Continued)R# DefinitionTypicalValue(8400)TypicalValue(8500/8550/8560) Actions
