LG GR-GR-L257BTBA Service Manual page 40

EXPLATION FOR MICOM CIRCUIT
1-5. Temperature sensing circuit
1) GR-P257, L257, P217, L217
The above circuits are circuits attached to freezing room sensor or cold storage room sensor for adjusting setting
temperature at the freezing room and cold storage room, ice-making sensor for sensing water temperature in ice-making, or
an evaporator for sensing temperature of a frost removal sensor necessary for frost removal. Short or open status of every
temperature sensor is as follows:
SENSOR
Freezing sensor
Frost removal sensor
Cold storage sensor 1
Cold storage sensor 2
Ice-making sensor
Room temperature sensor
A
(R)J1
B
C
D
E
F
CHECK POINT NORMAL(-30 °C ~ 50 °C)
POINT A Voltage
POINT B Voltage
POINT C Voltage
POINT D Voltage
POINT E Voltage
POINT F Voltage
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(R)J2
0.5 V~4.5 V
IN SHORT IN OPEN
0 V 5 V