64
TROUBLESHOOTING
4-2-6. If compressor does not operate
Start
Did 5 mins pass
after COMP OFF ?
Does compressor work
with manual operation?
Is IC02 MICOM #8
High?(5V)
Is freezer sensor
normal?
Is the temperature sensor
of MAIN PCB normal?
Is IC72 #15 about
0.8V?
Is CN71 connector
normal?
Is COMP ASS'Y
normal?
Normal (recheck)
Replace COMP ASS'Y
Check bad contact of
connector
OPEN and repair
the connection
Repair the sensor
and replace PCB
Open and repair
the connection
Check after
5 minutes
Refer to test function
in the manual
1) Replace MICOM
2) Replace PCB
Refer to circuit diagram
in the manual
1) Replace IC72 Driver IC(TD62083AP)
2) Replace PCB
Did buzzer of manual operation sound?
(Check certainly after manual operation)
Checking method of voltage PCB typical
Ground CN1#3(Black) and
1) IC02 MICOM #8 ; voltage High(5V 0.5V)
IC02 MICOM #8, COMP operating
Checking method of voltage
PCB typical Ground CN1#3(Black) and
1) IC72 #15 : Voltage Low(0V)
typical PCB Ground
CN1#3(Black)
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