Xerox WorkCentre Pro 423 Service Manual page 171

Motor doesn't rotate FIP
Relay PWB
Before this FIP, check that the motor is not locked or loaded.
Enter Chain XX Func XXX in Diag (CE) mode. Turn on the
power.
Is the voltage +24 VDC between the PWB pin 3(+) and GND(-)?
Y N
Is the voltage +24 VDC between pin 2(+) of the motor and
GND(-)?
Y N
Is the voltage +24 VDC between pin 1(+) of the motor
and GND(-)?
Y N
Is the voltage +24 VDC between the PWB pin 4
(+) and GND(-)?
Y N
Replace the PWB.
Repair an open wire or poor contact of the wire
from the PWB pin 4 and motor pin 1.
Replace the motor?
Check between the PWB Pin 3 and motor Pin 2 for an open
wire or poor contact.
Replace the PWB.
WorkCentre Pro 423/428
Motor keeps rotating FIP
Turn off the power. Disconnect the PWB connector.
Is the resistance within 10Ÿ between the connector pin 3 and
Frame?
Y N
Replace the PWB.
Check the circuit from the connector pin 3 to motor pin 2 for a
short circuit. If no problem is found, replace the motor.
03/02
2-139
Level 2 Troubleshooting
CHAPTER 2 TROUBLESHOOTING