5-10
COMPONENTS TEST PROCEDURE RESULTS
FUSE
MAGNETRON
THERMOSTAT
Disconnect the 5 pin
connector from P.C.B.
(Refer to schemetic diagram)
RELAY 2 OF P.C.B.
(Wire leads removed.)
Note: Relay
Relay 2: Microwave
FAN MOTOR
(Wire leads removed)
TURNTABLE
MOTOR
(Wire leads removed)
Check for continuity of the fuse with an
multi-meter.
NOTE: If the fuse is blown, check the primary, the secondary, and the monitor switches,
H.V.D. and H.V.C. before replacing the fuse.
If the fuse is blown by improper switch operation replace the defective switch and the
fuse at the same time. Replace just the fuse if the switches operate normally.
Normal Abnormal
0°C~Approx.110°C Approx.110°C
Cooking Start OFF
Check for P.C.B. connector.
Measure the resistance.
(Ohm-meter scale: R x 1)
Measure the resistance.
(Ohm-meter scale: R x 1000)
Normal: Approx. 200 ~400 ohm
Abnormal: Infinite or several
ohm.
Normal: Approx. 100~200 Ω
Abnormal: Infinite or several
ohm.
NOTE :
• A MICROWAVE LEAKAGE 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.
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