Xerox 8830 Service Manual page 313

4.1 FUSER ROLL DRIVE (2 OF 2)
MEDIA BUCKLE
SENSOR A21Q5
8830
UPPER FRAME
ASSEMBLY
(A20)
CAUTION: DO NOT RUN DIAGNOSTIC CODE (0403) IF THE FUSER IS COLD.
MACHINE DAMAGE CAN OCCUR DIAGNOSTIC CODE (0403) RUNS THE FUSER
MOTOR. THE DEVELOPER MOTOR, AND THE PHOTORECEPTOR MOTOR. THE
FUSER HEATER IS TURNED OFF WHILE IN THE DIAGNOSTIC MODE
PHOTO #9RM04
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THE FOLLOWING VOLTAGES SHOULD BE PRESENT:
SIGNAL MEASURED VOLTAGE
IN STDBY
IN PRINT
MOTOR START (L) +1.7 VDC 0.0 VDC
MOTOR DIRECTION +4.2 VDC 0.0 VDC
PWM +4.5 VDC +1.8 VDC
ENCODER 0.0 VDC +2.4 VDC
Chain 4 Print Power