Xerox 8500DN Service Manual - Page 162

General Troubleshooting Wiper Drive (Continued) R# Definition Typical Value (8400) 11 Bottom Encounter -2500 to Distance (uin) -1800 12 Turnaround Recovery time (sec) 0.001 to 0.250 Typical Value (8500/ 8550/8560) Actions -4250 to 3900 Reports the distance up from the upper limit of travel at which the wiper first encounters the lower travel limit. -0.05 to .35 Reports the time following the start of the turnaround motion that the motion drive error return to normal in the opposite direction. This test moves the gear train in one direction while capturing data, does a reversal to capture reversal transient data, then operates in the other direction. Paper Path Drive R# Definition Typical Value (8400) 0 Forward Drive Power Level (watts) 1 Up Motion Drive Error Ripple (watts) 2 Reverse Drive Power Level (watts) 3 Down Motion Drive Error Ripple (watts) 4 Swing Arm Transition Time (sec) Typical Value (8500/ 8550/8560) Actions 1.0 to 4.0 Reports the average drive power level in the foreword direction. 0 to 1.5 Reports the average drive ripple level in the forward direction. -4.0 to -1.0 Reports the average power in the reverse direction. 0 to 1.5 .03 to .06 Reports the average drive ripple in the forward direction. Reports the time that the lower portion of the paper path drive is disconnected while the swing arm transitions to the other drive position. 4-32 Phaser 8400/8500/8550/8560 Color Printer Service Manual