Maytag UMV1152CA Control Panel Sensor Test, Testing Procedures, 16027303, Illustration, Component

Testing Procedures

!WARNING

To avoid risk of electrical shock, personal injury or death; disconnect power to microwave oven and discharge the high voltage capacitor before servicing, unless testing requires power.

Illustration	Component	Test Procedure
	Ventilation Motor	Discharge Capacitor
	JMV8166BA*, AMV6167BD*	Remove two wires to run capacitor and
		measure resistance across the wires
	Ventilation Motor	Discharge Capacitor
	JMV9169BA*	Remove two wires to run capacitor and
		measure resistance across the wires
	Vent Blower Motor (run)	Discharge Capacitor
	Capacitor	Remove one wire from capacitor terminals
		and connect ohmmeter. Set on highest
		resistance scale.
	Cavity (Flame Sensor)	Disconnect all wires from TCO.
	Thermal Cut-Out	Measure resistance across terminals
	(Thermostat)
	Cavity (Flame Sensor)	Disconnect all wires from TCO.
	Thermal Cut-Out	Measure resistance across terminals
	(Thermostat)
	Cavity (Flame Sensor)	Disconnect all wires from TCO.
	Thermal Cut-Out	Measure resistance across terminals
	(Thermostat)
	Magnetron Thermal Cut-Out	Disconnect all wires from TCO.
	(Thermostat)	Measure resistance across terminals
	Hood Thermal Cut-Out	Disconnect all wires from TCO.
	(Thermostat)	Measure resistance across terminals
		NOTE: This TCO only works in an
		overheat condition. Otherwise, it will
		measure "open" when testing.
	Bottom Thermal Cut-Out	Disconnect all wires from TCO.
	(Thermostat)	Measure resistance across terminals
	Sensor	Remove the red and black wires, connect
		meter to red and black wires and measure
		continuity
		NOTE: Do not connect the meter to the
		white and orange wires, as this may
		damage the sensor.

Results

Approx. 75 Ω. (Tests all 3 windings.)

Approx. 25 Ω. (Tests all 3 windings.)

Between Terminals: Meter should momentarily indicate several ohms, then return to infinity (deflection). If no deflection occurs, or if continuous deflection occurs, replace capacitor. Terminal to Case: Infinite resistance.Non–resetable.

Open: ..... 212° F (100° C).

Resetable.

Open: ..... 302° F (150° C).

Closed: .. 140° F (60° C).

Non–resetable.

Open: ..... 248° F (120° C).

Resetable.

Open: ..... 302° F (150° C).

Closed: .. 140° F (60° C).

Resetable.

Open: ..... 158° F (70° C). Vent fan

engaged.

Closed: .. 104° F (40° C). Vent fan disengaged.

Non–resetable.

Open: ..... 248° F (120° C).

30Ω.

Control Panel Sensor Test

Illustration		Component	Test Procedure
		Sensor Test	Apply power to microwave for 5 minutes.
			Press AUTO DEFROST and REHEAT
			pads simultaneously and monitor display
			for V-Out value
			NOTE: Press AUTO DEFROST and
			POPCORN pads for model AMV6167BD*.
		Sensor Test	Apply power to microwave for 5 minutes.
	1	AMV5164B**,	Press AUTO DEFROST and REHEAT
		MMV5165BA*	pads simultaneously and monitor display
	2		for V-Out value
	3

Results

Less than 6	Sensor failure.
15 to 185	Normal.
More than 213	Sensor failure.
Less than 10	Sensor failure.
10 to 150	Normal.
More than 150	Sensor failure.

16 16027303 © 2006 Maytag Services