Samsung RR39M7 Series Service Manual page 84

TROUBLESHOOTING
- 1 BOARD
When the inverter PBA LED is ON,
it indicates that the compressor
does operate normally.
Refer to the TEST Function
in this manual.
Forced Operation signal sound
should be checked.
0~800Hz 50% Duty Signal
Output
Replace the INVERTER PBA.
Start
10 minutes have passed since
COMP was off.
Yes
When Forced
Operation mode is activated,
COMP operates.
Yes
Yes
No
Is DC 15V applied to ZD501?
Yes
CN102 connector is normal?
Yes
COMP ASS'Y is normal?
Yes
NORMAL (Recheck)
No
Check in 10 minutes.
No
Temperature Sensor is normal?
Is the main PBA temperature
sensor good?
Replace the MAIN PBA or
repair the connector.
No
Check the COMP wire
Check the Compressor
Check the AC Power wire
No
Replace the COMP ASS'Y.
84
No
Replace the Sensor.
Yes
No
Repair the Sensor or
Yes
replace the MAIN PBA.