LG LMVH1711ST Service Manual page 29

COMPONENTS
VENTILATION MOTOR
DAMPER MOTOR (D.M)
TURNTABLE MOTOR (T.M)
STIRRER MOTOR (S.M)
THERMISTOR
HEATER ELEMENT
ABSOLUTE HUMIDITY
SENSOR
1
2
3
TEST
1. Remove wire leads.
2. Measure resistance.
(ohm meter scale: Rx1)
1. Remove wire leads.
2. Measure resistance.
(ohm meter scale: Rx1000)
1. Remove the connector from PCB
2. Measure resistance across pins 1 & 3.
(ohm meter scale: Rx1)
1. Remove wire leads.
2. Measure resistance.
(ohm meter scale:Rx1)
1. Disconnect sensor connector from micom
computer board.
2. Measure resistance terminal to terminal
(ohm meter scale: R X 1000)
7-17
RESULTS
Normal:
Approximately
25 to 45 ohm
BL-BK(H) BL-WH(L) BL-GY(S)
20-40 40-60 75-95
ohm ohm ohm
Normal:Approximately
D.M T.M S.M
2.3-4.5 2.6-4.5 100-170
Kohm Kohm ohm
Abnormal:
Infinite or several.
Normal:
Approximately 250 to 350
Kohm at 68 ± 35°F
Abnormal:
Infinite or several.
Normal: Approximately
Conv. HTR
5-25
Abnormal:
Infinite or several.
Normal: Approximately
BK-RD: 5.9-6.3 Kohms
RD-WH: 2.9-3.2 Kohms
BK-WH: 2.9-3.2 Kohms
Abnormal:
Infinite or approx. 0 ohm