If Compressor Does Not Operate - Samsung RF195ABRS Service Manual

TROUBLESHOOTING

4-2-6. If compressor does not operate

Preliminary Inspection
"Check the compressor with selecting the manual operation"
1. Compressor does not work, unless 5mins pass after satisfying the temperature.
2. Compressor does not work during defrosting.
3. Compressor does not work because it sensing low temperature, unless the fridge & freeze sensor is connected.
Refer to test function in the manual
Did buzzer of manual operation sound?
(Check certainly after manual operation)
Check Cold solder joint / Replace PCB
1) Change IC71 Driver IC (TD62083AP)
2) Replace PCB
Refer to the circuit diagram in the manual
☞ Checking method of voltage
PCB common Ground REG1 Heater Sink and
1) IC10 MICOM #28 ; Voltage is high
(5V ±0.5V) when compressor is working.
Start
Did 5mins
No
pass after Compressor
Off?
Yes
Does
Yes
compressor work with manual
operation?
No
Is
IC10 MICOM #28 hight?
(5V)
Yes
Is
IC71 #13 about
0.7V?
Yes
Is
NO
CN72 connector
normal?
Yes
Is
NO
COMP ASS'Y
normal?
Yes
Normal (Recheck)
☞ Checking method of voltage
PCB common Ground REG1 Heater Sink and
1) IC71 #13 ; Voltage is Low (0.7V) when
compressor is working.
52
Check after 5 mins
Normal
Check bad contact of connector
Replace / Repair COMP ASS'Y
Common PCB Ground
REG1 Heater Sink