LG GR-L208NN, Service Manual

Page: 41 / 118

1-9. Fan motor driving circuit (freezing room, M/C room)
1. This circuit performs function to make standby power ‘0’ by cutting off power supplied to ICs inside of the fan motor in the
fan motor OFF.
2. This is a circuit to perform a temporary change of speed for the fan motor and applies DC voltage up to 7.5V ~ 16V to
motor.
3. This circuit performs function not to drive the fan motor further by cutting off power applied to the fan motor in the lock of
fan motor by sensing the operation RPM of the fan motor.
1) GR-L207ERA, GR-L247ERA
EXPLATION FOR MICOM CIRCUIT
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a , d part b part e part c , f part
Motor OFF 5V 2V or less 2V or less 0 V
Motor ON 2 ~ 3V 12 ~ 14V 8 ~ 16V 0 V