Samsung SR-S25NTA - Page 29

8-7. LOAD OPERATION circuit part
REFERRENCE
RED-RED
BLU-BLUE
ORG-ORANGE
BRN-BROWN ~
PNK-PINK
GRY-GRAY
WHT-WHITE
YEL-YELLOW ~
BLK-BLACK
PRP-PURPLE
W/BLK-
WHITE/BLACK
S/BLU-
SKY BLUE
When “High” signal is supplied to INPUT of IC03 (ULN2003A) at MICOM PIN NO #22 (P15), IC comes to be
turned on. At this time, if V12 (DC 12V) supplied to the lower COIL of COMP RELAY runs into GROUND
through OUTPUT of IC03, magnetic field will occur at CORE and then make contact point ON. This approves
220 V to COMP LOAD to make COMP ON and, if MICOM PIN NO #22 becomes “Low” state, IC arnes to be
TURN OFF state to make current not running to COMP RELAY COIL, to make RELAY contact point OFF state,
and then, finally to stop COMP.
1. Explanation of co-operation of COMP and F, R-Defroster HEATER
O
COMP RELAY he
O ©
ne ee
-Defroster Heater
R-Defroster Heater