Xerox 8500DN Service Manual - Page 161

Check Drive Menu General Troubleshooting This test moves the wiper drive mechanism through the complete range of its motion in each direction and does an "on the fly" reversal to verify operability. Wiper Drive R# Definition Typical Value (8400) Typical Value (8500/ 8550/8560) Actions 0 Up Motion Drive 120 to 275 -.06 to -.4 Error (uin) 1 Up Motion Drive 35 to 150 .06 to .2 Error Ripple (uin) 2 Up Distance (uin) 3200 to 4600 4000 to 4350 3 Lock Encounter 1300 to Distance (uin) 2500 3500 to 4450 4 Lock Engage Distance (uin) 350 to 700 2500 to 4500 5 Lock Engage Peak -250 to (uin) -125 .25 to 1.0 6 Down Motion -250 to Drive Error (uin) -125 .25 to 1.0 7 Down Motion 40 to 150 .05 to .8 Drive Error Ripple (uin) 8 Down Distance (uin) 3200 to 4600 4000 to 4350 9 Lock Disengage Distance (uin) -2000 to -50 -95 to -60 10 Lock Disengage Peak (uin) -800 to -150 .30 to 1.2 Reports the average following error while moving the wiper up from the low limit to the lock encounter point. Reports the difference between the max and min following error over the same interval. Reports the difference between the max and min limits of travel when moving up. Reports the distance up from the lower limit of travel at which the head lock latch is encountered. Reports the distance up from the lower limit of travel at which the head lock latch engages. Reports the peak following error at the point the latch engages. Reports the average following error while move the wiper up from the low limit to the lock encounter point. Reports the difference between the max and min following error over the same interval. Reports the difference between the max and min limits of travel when moving up. Reports the distance up from the upper stall point at which the head lock latch releases. Reports the peak following error at the point the latch releases Phaser 8400/8500/8550/8560 Color Printer Service Manual 4-31