Samsung AR18NSFPEWQNEU Service Manual page 84

10-2-25 No power outdoor (Initial Diagnosis) (Not displayed)
1. Checklist :
1) Is input power normal?
2) Is AC power linked correctly? (L,N,E)
3) Is mis-wiring between communication wire and Power wire?
4) Is input voltage of SMPS DC-link capacitor("CE101" ) normal?
5) Is the voltage of SMPS DC normal?
2. Troubleshooting procedure
Is the power cable from
terminal block toPBA is correct ?
CNP001(L) , CNP002(N) , CNP003(GND)
Check the fuse open or not? ("F001" )
Is the SMPS is normal?
MAIN 12V(CE175) : 11Vdc ~ 13Vdc
Is the SMPS is normal?
MAIN 18V(CE170) : 17Vdc ~19Vdc
Is the SMPS is normal?
MAIN 5V(CE174) : 4.5V ~ 5.5Vdc
Samsung Electronics
Unplug the power cord
YES
YES
Rest
Is the power normal?
YES
YES
YES
YES
Exchange the PBA
NO
Reconnect the power wire correctly.
NO
Exchange the PBA
NO
Check the power source.
NO
Exchange the SMPS PBA
NO
Exchange the SMPS PBA
NO
Exchange the SMPS PBA
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