Samsung AR18KSWSJWKNCV - No Power Outdoor (Initial Diagnosis)

Samsung Electronics 10-31
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("A") normal?
5) Is the voltage of SMPS DC normal?
2. Troubleshooting procedure
YES
YES
YES
YES
YES
YES
Is the power cable from terminal block to
PBA is correct?L :"B", N:"C", EARTH:"D"
Is the power normal?
Is the SMPS is normal?
"G" Main 5V : 4.5Vdc  5.5Vdc
Check the fuse open or not? ("E")
Is the SMPS DC_link voltage normal?
"F":270Vdc320Vdc
Is the SMPS is normal?
"H" Main 12V : 11Vdc  13Vdc
Unplug the power cord
Restart after power off.
Exchange the PBA
NO
NO
NO
NO
NO
NO
Reconnect the power wire correctly.
Check the power source.
Exchange the PBA
Exchange the PBA
Exchange the PBA
Exchange the PBA
MODEL "A" "B" "C" "D"
AR18HSFSHWK CE101 TB-L TB-N EARTH
AR24HSFSHWK C101 CN11 #1 CN11 #3 "-"
MODEL "E" "F" "G" "H"
AR18HSFSHWK F001 CE101 CE106 CE108
AR24HSFSHWK F101 C101 C112 C109