LG GA-449 Service Manual ▷ View online
10) LIGHTING CIRCUITS OF KEY BUTTON INPUT AND DISPLAY PARTS
u
GA-479**L*,**Q*,**C*/449**L*,**Q*,**C*
- 37 -
11) DISPLALY CIRCUIT
u
GA-479**L*/449**L*
- 38 -
u
GA-479**Q*/449**Q*
u
GA-479**C*/449**C*
- 39 -
3. SENSOR RESISTANCE CHARACTERISTICS TABLE
• The tolerance of sensor resistance is ±5%.
• Be sure to measure the sensor resistance after keeping the sensor more than 3 minutes at a measuring temperature.
(It needs delay due to sensor speed.)
- 40 -
MEASURED TEMPERATURE
RESISTANCE OF FREEZER SENSOR
RESISTANCE OF DEFROST SENSOR, ROOM TEMPERATURE SENSOR
-20°C
22.3k
Ω
77k
Ω
-15°C
16.9k
Ω
60k
Ω
-10°C
13.0k
Ω
47.3k
Ω
-5°C
10.1k
Ω
38.4k
Ω
0°C
7.8k
Ω
30k
Ω
+5°C
6.2k
Ω
24.1k
Ω
+10°C
4.9k
Ω
19.5k
Ω
+15°C
3.9k
Ω
15.9k
Ω
+20°C
3.1k
Ω
13k
Ω
+25°C
2.5k
Ω
11k
Ω
+30°C
2.0k
Ω
8.9k
Ω
+40°C
1.4k
Ω
6.2k
Ω
+50°C
0.8k
Ω
4.3k
Ω
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