Lexmark T620 Service Manual page 109

4069-5XX/7XX
The elevator moves in one direction only.
FRU
1 DC Drive Motor
Assembly High
Capacity Feeder
System Board
Action
Check the voltages at J1 on the high
capacity system board. The voltages
measure as follows:
Static (Motor Not Running)
J1-1 (Brown): approximately 0 V dc
J1-2 (yellow): approximately 0 V dc
Motor Running Forward
J1-1 (Brown): Approximately 0 V dc
J1-2 (Yellow): Approximately +24 V dc
Motor Running Reverse
J1-1 (Brown): Approximately +24 V dc
J1-2 (Yellow): Approximately 0 V dc
If any of the voltages are incorrect,
disconnect the motor and measure the
resistance between J-1 and J-2. The
resistance measures between 7.5 and 10.5
ohms. If incorrect replace the motor. If
correct, replace the system board.
Diagnostic Information
2-81