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EXPLATION FOR MICOM CIRCUIT
1-6. Door opening sensing circuit
(1) GR-P227/L227/P257/L257
Door of Freezer and Refrigerator
Closing
Opening
✽ Since door switches (A) and (B) are interconnected, if either fails, the other will not respond properly.
✽ If either switch fails, the light will not come on.
Measuring part
5 V ( A - B , C - D . Switch at both ends are at Off status)
0 V ( A - B , C - D . Switch at both ends are at On status)
IC1 (MICOM) No. (44, 45) / (45, 46) / (47, 48) Pin
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