LG GR-L207WVS Service Manual page 43

EXPLATION FOR MICOM CIRCUIT
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-P247, L247, P207, L207
Motor OFF
Motor ON
b , d part
5V
2 ~ 3V
- 43 -
a part
2V or less
12 ~ 14V
a
b
c
d
c part
2V or less
8 ~ 16V