LG LSC27914SB Owner's Manual - Page 39
Fan motor driving circuit freezer, mechanical area
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1-8. 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. 4. The ground is connector 7, pin 2. Between a c , d c Motor OFF 5V Motor ON 2~3V Between b c 2V or less 12~14V Between e c 2V or less 8~16V b a C e d bcadc e - 38 -
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1-8. 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.
4. The ground is connector 7, pin 2.
Between
a
c
,
d
c
Between
b
c
Between
e
c
Motor OFF
5V
2V or less
2V or less
Motor ON
2~3V
12~14V
8~16V
b
e
a
d
e
c
d
a
c
b
- 38 -
C