LG GR-GR-L257BTBA Service Manual page 37

EXPLATION FOR MICOM CIRCUIT
2) GR-C257, B257, C217, B217
✽ The fan motor at the freezing room does not stop but operates if opening doors of the freezing room or cold storage room
or the home bar during operation of the fan motor at the freezing room.
✽ (A), (B), (C) and (D) of door switch for the freezing room or cold storage room are connected to the door open sensing
circuit toward both ends of switch to determine door open at MICOM.
✽ Since a door switch of the home bar is connected to door switch (C), (D) of the cold storage room, it senses door opening
if even one of both is opened.
Type of Load
Measuring part (IC6)
ON
Status
OFF
Frost Removal
COMP
Heater
No.16 No.11
AC Converting
R-room LAMP
Relay
No.10
Within 1 V
12 V
- 37 -
Home Bar
Heater
No.15 No.14