2. Door opening sensing circuit
<GC-B207G/A207G>
Lamp does at the cold storage room not turn on if the door switch of the cold storage room fails to sense the door open
switch (C), (D) or the home bar switch.
EXPLATION FOR MICOM CIRCUIT
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Closing 5 V ( C - D . S/W at both ends are at Off status)
Opening 5 V ( C - D . S/W at both ends are at On status)
Measuring part
IC1 (MICOM) No. 45 Pin
Door of Freezing/Cold Storage Room