LG LMVM2277ST Service Manual page 25

COMPONENTS
L.V.T
VENTILATION MOTOR
TURNTABLE MOTOR
ABSOLUTE HUMIDITY
SENSOR
STIRRER MOTOR
TEST
1. Remove leads wire.
2. Measure resistance.
(ohm meter scale: Rx1)
Terminal : Red and White.
A C
Terminal : Red and Black.
A B
1. Remove lead wires.
2. Measure resistance.
(ohm meter scale:Rx1)
TURBO speed : Blue and Black
HI speed : Blue and White
MEDIUM speed : Blue and Grey
LOW speed : Blue and Brown
1. Remove wire leads.
2. Measure resistance.
(ohm meter scale: Rx1000)
1. Disconnect sensor connector from micom
computer board.
2. Measure resistance terminal to terminal (ohm
meter scale: R X 1000)
1. Remove lead wires.
2. Measure resistance.
(ohm meter scale:Rx1000)
7-15
BK
1
RD
2
3 WH
RESULTS
Normal: Approximately
Terminal : 18 to 30 ohms
A C
Terminal : 18 to 30 ohms
A B
Abnormal: Infinite.
Normal:
Approximately
TURBO speed: 4 to 20 ohm
HI speed: 19 to 35 ohm
MEDIUM speed: 26 to 42 ohm
LOW speed: 34 to 50 ohm
Abnormal: Infinite
Normal: Approximately
2.5 to 3.5 Kohms
Abnormal:
Infinite or several.
Normal:
Approximately
BK-RD: 6.0 Kohms
RD-WH: 3.0 Kohms
BK-WH: 3.0 Kohms
Abnormal:
Infinite or approx. 0 ohm
Normal:
Approximately 120 to 135 ohms
Abnormal:Infinite