LG GR-642APA - Dispenser Pump Motor Operation Circuit

7-2-9 DISPENSER PUMP MOTOR OPERATION CIRCUIT(OPTION)
Press the DISPENSER PUMP S/W, the MOTOR turns a forward rotate and release the S/W the MOTOR is stop for 0.6
second and turns a reverse rotate for 0.5 second.
- 30 -
A FORWARD
A REVERSE
STOP ROTATE STOP
ROTATE STOP
PUMP S/W OPERATION
PUMP MOTOR
OPERATION
PUMP S/W PART both ends of CC11 H L H H H
NO. 11 of IC1 H H H L H
PUMP MOTOR
NO. 12 of IC1 H L H H H
PART
VOLTAGE CHECK
as MULTIMETER 0V 12V 0V -12V 0V
(connect Ⓐ+, Ⓑ–)
0.6 sec 0.5 sec
RELEASE
PRESS
A FORWARD
ROTATE
STOP
A REVERSE
ROTATE
CHECK POINT
MOTOR OPERATION
STATE