Daewoo Frs 2011i Service Manual
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Page 41
40 OPERATION AND FUCTIONS MICOM Circuit Power Circuit DC Output Power (Voltage) Point Oscilloscope Measurement Remarks * DC output 15.7V 11.96V
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41 OPERATION AND FUCTIONS SMPS Movement Wave Drain to Source Break Voltage Point Oscilloscope Measurement Remarks SMP SIC PIN 1,2 *Voltage between DRAIN and SOURCE : below 650V OVP(Overvoltage Protection) Wave at power input Point Oscilloscope Measurement Remarks SMPS IC PIN 3,4 *Minimum standard voltage OVP start : 23.2V at
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42 OPERATION AND FUCTIONS Initial Power Wave of Switching Power IC Point Oscilloscope Measurement Remark SMPS IC PIN 3,4
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43
OPERATION AND FUCTIONS
Sensors
Circuit Diagram
Fnction of Each Sensor
[ F-sensor ]
1) It senses the temperature of freezer compartment and controls Comp., F-fan ON / OFF.
2) How it works ;
Working Point Low ON Mid OFF High OFF
Working Temp. -11.0 -20.0 - 26.0
Resistance 14.74k 22.33k 30.92k
Sensing Voltage 3.50 V 3.00 V 2.14 V
[ D-sensor ]
It senses return point of defrosting heater.
Working Point Return point of defrosting heater
Working Temp. 10...](http://img.usermanuals.tech/thumb/1416/51311/w300_daewoo_frs-2011i-service-manual-43.png "Page 44
43
OPERATION AND FUCTIONS
Sensors
Circuit Diagram
Fnction of Each Sensor
[ F-sensor ]
1) It senses the temperature of freezer compartment and controls Comp., F-fan ON / OFF.
2) How it works ;
Working Point Low ON Mid OFF High OFF
Working Temp. -11.0 -20.0 - 26.0
Resistance 14.74k 22.33k 30.92k
Sensing Voltage 3.50 V 3.00 V 2.14 V
[ D-sensor ]
It senses return point of defrosting heater.
Working Point Return point of defrosting heater
Working Temp. 10...")
43 OPERATION AND FUCTIONS Sensors Circuit Diagram Fnction of Each Sensor [ F-sensor ] 1) It senses the temperature of freezer compartment and controls Comp., F-fan ON / OFF. 2) How it works ; Working Point Low ON Mid OFF High OFF Working Temp. -11.0 -20.0 - 26.0 Resistance 14.74k 22.33k 30.92k Sensing Voltage 3.50 V 3.00 V 2.14 V [ D-sensor ] It senses return point of defrosting heater. Working Point Return point of defrosting heater Working Temp. 10...
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44
OPERATION AND FUCTIONS
1) Cut J18 on M-PCB, then temp. is low e red -2 than [Mid OFF point].
2) In addition to 1) action, cut J22 on M-PCB, then the temp. is low e red -1 more.
Relay Function
Circuit Diagram
How it works ;
ON Conditi on OFF Condition
C ontrol Control
Method MI CO M
POR T IC 2 Output
PIN MICOM
POR T IC 03 Out put PIN
COMP REPLAY
REPLAY
REPLAY
REPLAY
REPLAY
REPLAY
REPLAY
REPLAY
REPLAY REPLAY REPLAY #1 3.7V #10 0.7V #1 0V #10 12V
R-LAMP
#4...](http://img.usermanuals.tech/thumb/1416/51311/w300_daewoo_frs-2011i-service-manual-44.png "Page 45
44
OPERATION AND FUCTIONS
1) Cut J18 on M-PCB, then temp. is low e red -2 than [Mid OFF point].
2) In addition to 1) action, cut J22 on M-PCB, then the temp. is low e red -1 more.
Relay Function
Circuit Diagram
How it works ;
ON Conditi on OFF Condition
C ontrol Control
Method MI CO M
POR T IC 2 Output
PIN MICOM
POR T IC 03 Out put PIN
COMP REPLAY
REPLAY
REPLAY
REPLAY
REPLAY
REPLAY
REPLAY
REPLAY
REPLAY REPLAY REPLAY #1 3.7V #10 0.7V #1 0V #10 12V
R-LAMP
#4...")
44 OPERATION AND FUCTIONS 1) Cut J18 on M-PCB, then temp. is low e red -2 than [Mid OFF point]. 2) In addition to 1) action, cut J22 on M-PCB, then the temp. is low e red -1 more. Relay Function Circuit Diagram How it works ; ON Conditi on OFF Condition C ontrol Control Method MI CO M POR T IC 2 Output PIN MICOM POR T IC 03 Out put PIN COMP REPLAY REPLAY REPLAY REPLAY REPLAY REPLAY REPLAY REPLAY REPLAY REPLAY REPLAY #1 3.7V #10 0.7V #1 0V #10 12V R-LAMP #4...
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45 OPERATION AND FUCTIONS Fan Function How it works ; ON Condition OFF Condition MICOM Port MICOM Port Control Object Control Method 31 32 33 IC Collector 31 32 33 IC Collector Low (10V) operation 5V 0V 0V 10.35V 0V Mid (12V) operation 0V 5V 0V 12.19V 0V F-FAN High (14V) operation 0V 0V 0V 14.38V 5V 5V 5V 0V ON Condition OFF Condition MICOM PORT MICOM Port Control Object Control Method 39 40 41 IC Collector 39 40 41 IC Collector Low (10V) operation 0V 5V 5V 10.38V 0V...
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46 OPERATION AND FUCTIONS Circuit Diagram of Main PCB
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47 DIAGRAM < RSCR TYPE > WIRING DIAGRAM
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48 DIAGRAM < CSR TYPE >
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49 DIAGRAM CIRCUIT WIRING DIAGRAM Main PCB