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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.
LRSC269****
EXPLANATION FOR MICOM CIRCUIT
- 40 -
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
COMPRESSOR
-FAN PWM
COMPRESSOR
-FAN LOCK
FREEZER-FAN PWM
FREEZER-FAN LOCK
Summary of Contents for LRSC26910SW
Page 48: ...2 2 Parts list LRSC269 EXPLANATION FOR MICOM CIRCUIT 48 ...
Page 49: ...EXPLANATION FOR MICOM CIRCUIT 49 ...
Page 50: ...2 3 LRSC26944 LRSC26980TT DISPLAY ASSEMBLY part diagram EXPLANATION FOR MICOM CIRCUIT 50 ...
Page 51: ...DISPLAY circuit diagram EXPLANATION FOR MICOM CIRCUIT 51 ...
Page 53: ...DISPLAY circuit diagram EXPLANATION FOR MICOM CIRCUIT 53 PWB ASSEMBLY DISPLAY ...
Page 60: ...CIRCUIT 60 LRSC26944 LRSC26980TT ...
Page 102: ...TROUBLE DIAGNOSIS 102 ...
Page 111: ...6 BLOCK DIAGRAM TV RADIO 111 ...