Samsung RM255BABB Training Manual page 62

DIAGNOSTIC
6-2) If the compressor doesn't work normally
See the TEST FUNCTION
i n the manual .
Did buzzer sound on forced operation?
(Check certainly after forced start.)
NO
Exchange MICOM and
PCB.
NO
Replace IC73 Driver
IC(TD62083AP).
Start
NO
Does 5 min pass after
COMP. OFF?
YES
YES
Does compressor work
with forced operation?
YES
NO
Voltage value of MICOM pin No.9
High?(5V)
YES
Is the voltage on
IC73 pin No. 16, 0.8V?
YES
NO
Is the CN72
connector normal?
YES
NO
Is COMP assembly
normal?
YES
Normal
61 61
Recheck the comp after a
5 min.
Is refrigerator sensor
NO
normal?
YES
Is the temperature
NO
sensor of main PCB
Normal?
YES
Open and repair
the connection.
Check connector for
contact failure.
Exchange and repair
COMP. Assembly.
Open and repair
the connection.
Troubleshoot the
sensor pant and
Exchange PCB.