LG GR-K192AF Service Manual - Page 20

Storing temperature compensation and over-cool/under-cool cut compensation circuit

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MICOM function and circuit description 5-2-9. Storing temperature compensation and over-cool/under-cool cut compensation circuit (1) Storing temperature compensation u This is the circuit to input the temperature compensation level required for adjusting storage temperature at the left or right compartment. Left compartment Right compartment Temperature (RCL) (RCR) compensation value Remarks 180 KΩ +2.5 ˚C Warmer 56 KΩ +2.0 ˚C 33 KΩ +1.5 ˚C 18 KΩ +1.0 ˚C 12 KΩ +0.5 ˚C 10 KΩ 0 ˚C Standard temperature 8.2 KΩ -0.5 ˚C 5.6 KΩ -1.0 ˚C 3.3 KΩ -1.5 ˚C 2 KΩ -2.0 ˚C Cooler 470 Ω -2.5 ˚C u Temperature compensation table by adjustment of resistance value (difference against current temperature) Ex) If you change the resistance of compensation at the left compartment (RCL) from 10KΩ (current resistance) to 18KΩ (adjusted resistance), the storage temperature in the left compartment will be increased by 1°C. Modified Classification resistance Current resistance 470 Ω 2 KΩ 470KΩ No change 0.5°C UP 3.3 KΩ 1°C UP 5.6 KΩ 8.2 KΩ 1.5°C UP 2°C UP 10 KΩ 2.5°C UP 12 KΩ 18 KΩ 3°C UP 3.5°C UP 33 KΩ 4°C UP 56 KΩ 4.5°C UP 180 KΩ 5°C UP Left compartment (RCL) 2 KΩ 0.5°C DOWN No change 0.5°C UP 1°C UP 1.5°C UP 3.3 KΩ 1°C DOWN 0.5°C DOWN No change 0.5°C UP 1°C UP 5.6 KΩ 1.5°C DOWN 1°C DOWN 0.5°C DOWN No change 0.5°C UP 2°C UP 1.5°C UP 1°C UP 2.5°C UP 3°C UP 2°C UP 2.5°C UP 1.5°C UP 2°C UP 3.5°C UP 3°C UP 2.5°C UP 4°C UP 3.5°C UP 3°C UP 4.5°C UP 4°C UP 3.5°C UP 8.2 KΩ 2°C DOWN 1.5°C DOWN 1°C DOWN 0.5°C DOWN No change 0.5°C UP 1°C UP 1.5°C UP 2°C UP 2.5°C UP 3°C UP ƒU 10 KΩ 2.5°C DOWN 2°C DOWN 1.5°C DOWN 1°C DOWN 0.5°C DOWN No change 0.5°C UP 1°C UP 1.5°C UP 2°C UP 2.5°C UP Right compartment (RCR) 12 KΩ 3°C DOWN 2.5°C DOWN 2°C DOWN 1.5°C DOWN 1°C DOWN 0.5°C DOWN No change 0.5°C UP 1°C UP 1.5°C UP 18 KΩ 3.5°C DOWN 3°C DOWN 2.5°C DOWN 2°C DOWN 1.5°C DOWN 1°C DOWN 0.5°C DOWN No change 0.5°C UP 1°C UP 33 KΩ 4°C DOWN 3.5°C DOWN 3°C DOWN 2.5°C DOWN 2°C DOWN 1.5°C DOWN 1°C DOWN 0.5°C DOWN No change 0.5°C UP 2°C UP 1.5°C UP 1°C UP 56 KΩ 4.5°C DOWN 4°C DOWN 3.5°C DOWN 3°C DOWN 2.5°C DOWN 2°C DOWN 1.5°C DOWN 1°C DOWN 0.5°C DOWN No change 0.5°C UP 180 KΩ 5°C DOWN 4.5°C DOWN 4°C DOWN 3.5°C DOWN 3°C DOWN 2.5°C DOWN 2°C DOWN 1.5°C DOWN 1°C DOWN 0.5°C DOWN No change - 20 -

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5-2-9. Storing temperature compensation and over-cool/under-cool cut compensation circuit
(1) Storing temperature compensation
u
This is the circuit to input the temperature compensation level required for adjusting storage temperature at the left or
right compartment.
u
Temperature compensation table by adjustment of resistance value (difference against current temperature)
Ex) If you change the resistance of compensation at the left compartment (RCL) from 10K
Ω
(current resistance) to 18K
Ω
(adjusted resistance), the storage temperature in the left compartment will be increased by 1°C.
MICOM function and circuit description
- 20 -
Left compartment
Right compartment
Remarks
(RCL)
(RCR)
180
K
Ω
+2.5 ˚C
Warmer
56
K
Ω
+2.0 ˚C
33
K
Ω
+1.5 ˚C
18
K
Ω
+1.0 ˚C
12
K
Ω
+0.5 ˚C
10
K
Ω
0 ˚C
8.2
K
Ω
-0.5 ˚C
5.6
K
Ω
-1.0 ˚C
3.3
K
Ω
-1.5 ˚C
2
K
Ω
-2.0 ˚C
Cooler
470
Ω
-2.5 ˚C
470
Ω
2 K
Ω
3.3 K
Ω
5.6 K
Ω
8.2 K
Ω
10 K
Ω
12 K
Ω
18 K
Ω
33 K
Ω
56 K
Ω
180 K
Ω
470K
Ω
No change
0.5°C UP
1°C UP
1.5°C UP
2°C UP
2.5°C UP
3°C UP
3.5°C UP
4°C UP
4.5°C UP
5°C UP
2 K
Ω
0.5°C DOWN
No change
0.5°C UP
1°C UP
1.5°C UP
2°C UP
2.5°C UP
3°C UP
3.5°C UP
4°C UP
4.5°C UP
3.3 K
Ω
1°C DOWN
0.5°C DOWN
No change
0.5°C UP
1°C UP
1.5°C UP
2°C UP
2.5°C UP
3°C UP
3.5°C UP
4°C UP
5.6 K
Ω
1.5°C DOWN
1°C DOWN
0.5°C DOWN
No change
0.5°C UP
1°C UP
1.5°C UP
2°C UP
2.5°C UP
3°C UP
3.5°C UP
8.2 K
Ω
2°C DOWN
1.5°C DOWN
1°C DOWN
0.5°C DOWN
No change
0.5°C UP
1°C UP
1.5°C UP
2°C UP
2.5°C UP
3°C UP
10 K
Ω
2.5°C DOWN
2°C DOWN
1.5°C DOWN
1°C DOWN 0.5°C DOWN
No change
0.5°C UP
1°C UP
1.5°C UP
2°C UP
2.5°C UP
12 K
Ω
3°C DOWN
2.5°C DOWN
2°C DOWN
1.5°C DOWN 1°C DOWN
0.5°C DOWN
No change
0.5°C UP
1°C UP
1.5°C UP
2°C UP
18 K
Ω
3.5°C DOWN
3°C DOWN
2.5°C DOWN
2°C DOWN 1.5°C DOWN
1°C DOWN
0.5°C DOWN
No change
0.5°C UP
1°C UP
1.5°C UP
33 K
Ω
4°C DOWN
3.5°C DOWN
3°C DOWN
2.5°C DOWN 2°C DOWN
1.5°C DOWN
1°C DOWN
0.5°C DOWN
No change
0.5°C UP
1°C UP
56 K
Ω
4.5°C DOWN
4°C DOWN
3.5°C DOWN
3°C DOWN 2.5°C DOWN
2°C DOWN
1.5°C DOWN
1°C DOWN
0.5°C DOWN
No change
0.5°C UP
180 K
Ω
5°C DOWN
4.5°C DOWN
4°C DOWN
3.5°C DOWN 3°C DOWN
2.5°C DOWN
2°C DOWN
1.5°C DOWN
1°C DOWN
0.5°C DOWN
No change
Left
compartment
(RCL)
ƒU
Right
compartment
(RCR)
Modified
resistance
Classification
Current
resistance
Temperature
compensation value
Standard temperature