KitchenAid KHMS105E service manual Component Testing, Test Charts

Microwave Oven Hood Combo Service Manual — LIT 4317216

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.

Original 03/97

Page 3-19

FILAMENT

WINDING

HIGH VOLTAGE TRANSFORMER

				SECONDARY
	TEST CHARTS			WINDINGS
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 winding.		b) 65 to 120 ohms.
	c)	Filament winding		c) 0 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 Ω.
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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