LG GR-459GTCA Service Manual page 30

4) LOAD/BUZZER OPERATION, DOOR OPENING SENSING CIRCUIT
(1) LOAD OPERATION CHECK
u BEST
u GOOD/BETTER
u BEST
LOAD
MEASURING POINT (IC6)
ON
STATE
OFF
u GOOD/BETTER
LOAD
MEASURING POINT (IC4)
ON
STATE
OFF
COMP FAN
NO.15 NO.13
COMP FAN
NO.15 NO.14
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DEFROST
LAMP
HEATER
NO.12 NO.11
Below 1V
12V
DEFROST
HEATER
NO.13
Below 1V
12V
DISPENSER TCM
HEATER(OPTION) (OPTION)
NO.14 NO.16
DISPENSER
LAMP
HEATER(OPTION)
NO.11 NO.16