Lincoln 1456 sensor sensor is located in the conveyor motor, proceed, oven control, Oven control

	sensor (sensor is located in the conveyor motor).
	Measure voltage at the motor connector, red wire and
	yellow wire. Voltage should be approx. 10VDC. If no
	voltage is present, trace wiring back to oven control. If
	there is no voltage output at the oven control, replace
	oven control.
Conveyor motor	If there is voltage supplied to the hall effect sensor,
	check for a frequency output from the hall effect sensor.
	Measure frequency across the yellow and white wires in
	the motor connector. Frequency reading should be
	approx. 25-100 Hz. If these readings are not achieved,
	replace conveyor motor. If the readings are achieved,
	proceed.
Oven control	If the hall effect sensor readings are correct, but there is
	no speed indicated on the display, replace the oven
	control.

Impinger I – Adv Digital – Gas Service Manual – International 11