Daewoo FRS-U20DD. Service Manual page 29

5-3. Relay Function
1. Circuit Diagram
IC1
(MICOM)
2. How it works;
Control
-
R-Lamp
H/B Heater
-
Dispenser-Solenoid
Water valve (Ice)
Water valve (Dispenser)
Geared-Motor
Defrost-Heater
F-Lamp
Cube-Solenoid
Water Pipe Heater
CONTENTS
ON Condition
Control Mode
Method
MICOM Port
- #1≒5.0V
Relay 2 #2≒5.0V
Relay 3 #3≒5.0V
- #4≒5.0V
Relay 5 #5≒5.0V
Relay 6 #6≒5.0V
Relay 7 #7≒5.0V
Relay 8 #8≒5.0V
Relay 9 #9≒5.0V
Relay 10 #10≒5.0V
Relay 11 #11≒5.0V
Relay 12 #12≒5.0V
IC ULN2004
Output pin
#10≒0.7V
#11≒0.7V
#12≒0.7V
IC7
#13≒0.7V
#14≒0.7V
#15≒0.7V
#10≒0.7V
#11≒0.7V
#12≒0.7V
IC8
#13≒0.7V
#14≒0.7V
#15≒0.7V
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REMARKS
OFF Condition
IC ULN2004
MICOM Port
Output pin
#1≒0V #10≒12V
#2≒0V #11≒12V
#3≒0V #12≒12V
IC7
#4≒0V #13≒12V
#5≒0V #14≒12V
#6≒0V #15≒12V
#7≒0V #10≒12V
#8≒0V #11≒12V
#9≒0V #12≒12V
IC8
#10≒0V #13≒12V
#11≒0V #14≒12V
#12≒0V #15≒12V