Kenmore 721.805994, 721.805944 manual Test Procedures, correctly connected Relay, Problems, Causes

COMPONENTS	TEST PROCEDURES		RESULTS
	Check for continuity of relay 2 with an	POWER
		LEVEL
	ohm-meter.
	(Remove wire leads from relay 2 and	1	4 sec	18 sec
	operate the unit.)
		2	6 sec	16 sec
	Relay 2	3	8 sec	14 sec
		4	10 sec	12 sec
RELAY2		5	12 sec	10 sec
		6	14 sec	8 sec
		7	16 sec	6 sec
	Figure 30	8	18 sec	4 sec
		9	20 sec	2 sec
	CAUTION: The relay connector 2 must be
		10	22 sec	0
	correctly connected Relay 2.

NOTES:

•A MICROWAVE ENERGY TEST MUST ALWAYS BE PERFORMED WHEN THE UNIT IS SERVICED FOR ANY REASON.

•MAKE SURE THE WIRE LEADS ARE IN THE CORRECT POSITION.

•WHEN REMOVING THE WIRE LEADS FROM THE PARTS, BE SURE TO GRASP THE CONNECTOR, NOT THE WIRES.

B. CHECKOUT PROCEDURES

(1) CHECKOUT PROCEDURES FOR FUSE BLOWING

CAUTION: REPLACE BLOWN FUSE WITH 20 AMPERE FUSE.

PROBLEMS	CAUSES
Fuse blows immediately after
the door is closed.	Improper operation of the primary interlock, secondary
Fuse blows immediately after
	interlock switches and/or the interlock monitor switch.
the door is opened.
Fuse blows when the door is closed and START	Malfunction of the high voltage transformer; the high
key is touched.	voltage capacitor including the diode, the magnetron,
	the blower motor or the circuit board.

NOTES:

•If the fuse is blown by an improper switch operation, replace all switches and the fuse at the same time. After replacing the defective switches with new ones, make sure that they are correctly connected.

•Check for microwave energy leakage according to INTERLOCK ADJUSTMENT PROCEDURES on page 7-12 when the primary interlock, secondary interlock switches and/or the interlock monitor switches are adjusted or replaced.

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