LG GR-B277, Service Manual

Page: 33 / 134

2) GR-B277
✽
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.
EXPLANATION FOR MICOM CIRCUIT
- 33 -
Measuring part (IC6) No.16 No.11 No.10 No.15 No.14
Status
ON Within 1 V
OFF 12 V
Type of Load COMP
Frost Removal
Heater
AC Converting
Relay
R-room LAMP
Home Bar
Heater