LG LRMM1430SW Service Manual page 23

COMPONENTS
RELAY
FAN MOTOR
(Wire leads removed)
TURNTABLE
MOTOR
(Wire leads removed)
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.
TEST PROCEDURE
Check for continuity of relay with an
ohm-meter.
(Remove lead wires from relay and
operate the unit.)
Relay 2
Measure the resistance.
(Ohm-meter scale: R x 100)
B(BK)
A(RD)
C(WH)
Measure the resistance.
(Ohm-meter scale: R x 1000)
-22-
RESULTS
Normal: Approx.
ON: 0 ohm
OFF: ohms
Abnormal: Infinite or several
ohms.
Normal: Approx. 50 ~ 150 ohms
Abnormal: Infinite or several
ohms.
Normal: Approx. 2 ~ 4K ohms
Abnormal: Infinite or several
ohms.