LG MH-602Y Service Manual page 21

COMPONENTS
TIMER MOTOR
(Wire leads removed)
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 timer motor with an
ohm-meter.
(Remove wire leads from timer motor)
Grill Switch
Microwave Switch
Measure the resistance.
(Ohm-meter scale: R x 1)
A
B
C
Measure the resistance.
(Ohm-meter scale: R x 1000)
5-11
RESULTS
A
B
Note : A is timer ON, OFF
switch.
A
B is power supply
terminal of the timer
motor.
B
Normal:
A ~ B
30 ~ 50 Ω 300~500 Ω
Abnormal: ∞ or several Ω
Normal: Approx. 100~200 Ω
Abnormal: ∞ or several Ω
Turn On Turn Off
Approx. 22 KΩ
A ~ C