Frigidaire LCRT2010ST service manual Component Test Procedure, Cautions, Components, Results

COMPONENT TEST PROCEDURE

CAUTIONS

1.DISCONNECT THE POWER SUPPLY CORD FROM THE OUTLET WHENEVER REMOVING THE OUTER CASE FROM THE UNIT. PROCEED WITH THE TEST ONLY AFTER DISCHARGING THE HIGH VOLTAGE CAPACITOR AND REMOVING THE WIRE LEADS FROM THE PRIMARY WINDING OF THE HIGH VOLTAGE TRANSFORMER. (SEE PAGE 2-1)

2.ALL OPERATIONAL CHECKS WITH MICROWAVE ENERGY MUST BE DONE WITH A LOAD (1 LITER OF WATER IN CONTAINER) IN THE OVEN.

COMPONENTS TEST PROCEDURE RESULTS

HIGH VOLTAGE TRANSFORMER (Wire leads removed)

FILAMENT

WINDING

PRIMARY

TERMINAL

	1.	Measure the resistance.	Approx.: 0.2 ~ 0.4 ohm
		(Ohm-meter scale: Rx1 and Rx100)
			Approx.: 70 ~ 100 ohm
		• Primary winding
			Less than: 1 ohm
		• Secondary winding
		• Filament winding
	2.	Measure the resistance.
		(Ohm-meter scale: Rx1000)	Normal: Infinite
		• Primary winding to ground	Normal: Infinite
		• Filament winding to ground
MAGNETRON	1. Measure the resistance.		Normal: Less than 1 ohm
(Wire leads removed)		(Ohm-meter scale: Rx1)
		• Filament terminal
	2. Measure the resistance.		Normal: Infinite
		(Ohm-meter scale: Rx1000)
		• Filament to chassis

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