Xerox C2424 Service Manual - Page 195

X-Axis Drive (Continued) This test drives the X-Axis motor in each directions until the printhead stalls into the stops, and then moves the printhead into the clear and performs an on-the-fly reversal. The power profile is used to confirm operational goals. R# Definition Typical Value Actions 5 Left Right Traverse MFG Power Ripple (watts) Only 6 Turnaround Power 4.3 to Blip Width (watts) 10.85 Same as R3 except for the other direction of. motion. Reports the width of the momentary drop in the required drive power when the printhead motion is being reversed. An abnormal value may indicate an unusual amount of play in the drive mechanism. Transfix Drive Slow and Transfix Drive Fast With the drum turning at a constant velocity, the transfix roller is loaded against the drum, held for one revolution, then raised. The velocity with which the transfix roller is moved differs for the two tests. R# Definition Typical Value Fast Slow Actions 0 Time to first 0.22 to contact (sec) 0.29 MFG Only 1 Loaded 2600 to average Y- 3800 axis following error (mpts) MFG Only 2 Loaded Y- 150 to axis following 1100 error ripple (mpts) MFG Only 3 Time to last -0.001 to MFG contact (sec) 0.8 Only Reports the time from the load command to the engine until the drum indicates contact with the pressure roller. Reports the average Y-axis following error during the Roll With Transfix Roller Down interval. Reports the difference between the max and min Y-axis following errors during the Roll With Transfix Roller Down interval. Reports the time from the unload command to the engine until the drum indicates no further contact. General Troubleshooting 4-37