2-144 Service Manual
7002-xxx
The elevator tray does not move up or down; the printer recognizes that the option is
installed
The elevator moves in one direction only
FRU Action
1 DC drive motor high-
capacity feeder option
system board
Be sure the motor cable is correctly installed at J1 on the board.
Check the cables, damaged or loose wires. Disconnect the motor.
Check for a short between each pin and the motor housing. If a
problem is found, replace the motor assembly. If no problem is found,
measure the resistance between the following pins on the motor
cable connector:
Pins 1 (brown) and pin 2 (Yellow)
The resistance measures between approximately 7.5 and 10.5 ohms.
If incorrect, replace the motor assembly. If correct, replace the high-
capacity feeder option system board.
FRU Action
1 DC drive motor assembly
high-capacity feeder
system board
Check the voltages at J1 on the high-capacity system board. The
voltages measure approximately as follows:
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.
Pin Color Voltage
Static (motor not running)
J1-1 Brown 0 V dc
J1-2 Yellow 0 V dc
Motor running forward
J1-1 Brown 0 V dc
J1-2 Yellow +24 V dc
Motor running in reverse
J1-1 Brown +24 V dc
J1-2 Yellow 0 V dc
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