LG LMH1017CVW Service Manual page 23

COMPONENTS
CIRCULATION MOTOR
(Wire leads removed)
TURNTABLE MOTOR
(Wire leads removed)
DAMPER MOTOR
(Wire leads removed)
THERMISTOR
(Disconnect the 2 pin
connector from P.C.B.)
RELAY 2, 3, 4 OF P.C.B.
(leadwires removed.)
RY2 : Microwave
RY4 : Convection
NOTE : A MICROWAVE ENERGY LEAKAGE TEST MUST ALWAYS BE PERFORMED WHEN THE UNIT IS
SERVICED FOR ANY REASON.
MAKE SURE THE WIRE LEADS ARE CORRECT POSITION.
WHEN REMOVING THE WIRE LEAD FROM THE PARTS, BE SURE TO GRASP THE
CONNECTOR, NOT THE WIRES.
TEST PROCEDURE
Measure the resistance.
(Multi-meter scale : R x 1)
Measure the resistance.
(Ohm-meter scale : R x 1000)
Measure the resistance.
(Ohm-meter scale : R x 1000)
RY 4
RY 2
5-12
RESULTS
Normal : Approx. 29.5 ohm
Abnormal : Infinite or several
ohm.
Normal : Approx. 3.48 Kohm
Abnormal : Infinite or several
ohm.
Normal : Approx. 2.93 Kohm
Abnormal : Infinite or several
ohm.
Normal at room temperature
(20°C~30°C)
Approx. 255 Kohm
Cooking Start OFF