Whirlpool 1997 "E service manual Component Testing, Test Charts

COMPONENT TESTING

WARNING

ELECTRICAL SHOCK HAZARD

DISCONNECT THE POWER SUPPLY CORD FROM THE WALL OUTLET WHEN REMOVING THE CABINET FROM THE OVEN. PROCEED WITH THE TESTS ONLY AFTER DISCHARG- ING THE HIGH VOLTAGE CAPACITOR, AND REMOVING THE WIRE LEADS FROM THE PRIMARY WINDING OF THE HIGH VOLTAGE TRANSFORMER.

FILAMENT WINDING

HIGH VOLTAGE

TRANSFORMER

SECONDARY

WINDING

	TEST CHARTS		PRIMARY WINDING
COMPONENT	TEST PROCEDURE		RESULT
High-Voltage Transformer (with	1. Set the ohmmeter to the
wire leads unplugged).	R x 1 scale, and measure
	the:
	a)	Primary winding.	a) 0.3 to 0.5 ohms.
	b)	Secondary to ground.	b) 65 to 120 ohms.
	c)	Filament winding.	c) 0.2 to 0.4 ohms
	2. Set	the ohmmeter to its
	R x 1000 scale, and mea-
	sure the:
	a)	Primary to ground.	a) Normal = infinity.
	b)	Filament to ground.	b) Normal = infinity.
Magnetron (with wire leads un-	1. Set the ohmmeter to the
plugged). NOTE: A microwave	R x 1 scale, and measure
energy leakage test must always	the:
be performed when the oven is	a) Filament terminal.		a) Normal readings - Less
serviced for any reason.
	2. Set	the ommeter to the	than 1 ohm.
NOTE: Replace the magnetron
	R x 1000 scale and mea-
if the checks and all of the high
	sure the:
voltage component tests are
	a) Filament winding to		a) Normal = infinity.
good, but the unit still does not
	chassis.
heat a load.

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