LG LSC27990TT Service Manual page 24

EXPLANATION FOR MICOM CIRCUIT
1-4. Load/dispenser operation, door opening circuit
1. LOAD DRIVING CIRCUIT
✽ The fan operates at the regular speed even if the door of the refrigerator or freezer is opened. When the doors are closed,
the fan reverts to its original speed.
✽ (A), (B), (C), and (D) of door switch for the freezer or refrigerator are connected to the door open sensing circuit in parallel
toward both ends of switch to determine door open at MICOM.
✽ In the TEST mode, the fan will stop if any door is opened. It will resume operation when the door is closed.
Type of Load Compressor
Measuring part (IC6)
ON
Status
OFF
(1) GR-G277STSA(LSC27990TT)
Defrost
Heater
IC6-16 IC6-13
AC Converting
Relay
IC6-12
Within 1 V
12 V
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Refrigerator Dispenser
LAMP Heater
IC6-15 IC6-14