LG Electronics GR-P227/L227, GR-P257/L257 Fan motor driving circuit freezer, mechanical area

EXPLATION FOR MICOM CIRCUIT

1-11. Fan motor driving circuit (freezer, mechanical area)

1.The circuit cuts all power to the fan drive IC, resulting in a standby mode.

2.This circuit changes the speed of the fan motor by varying the DC voltage between 7.5 Vdc and 16 Vdc.

3.This circuit stops the fan motor by cutting off power to the fan when it senses a lock-up condition.

	a , d	part	b part	e part
Motor OFF	5V		2V or less	2V or less
Motor ON	2 ~	3V	12 ~ 14V	8 ~ 16V

(1)GR-P227/L227/P257/L257

b

a

e

d

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