Symptoms, Diagnoses And Actions - Samsung DV400GWHD Series Service Manual

4-4. symPToms, diagnoses and acTions

● The power does not work.
Is the input AC
voltage normal?
Yes
Is the terminal block
connection normal?
Yes
Is the housing
connection normal?
Yes
Is the wire among
the main sub PCBs
in good condition?
Yes
Is the sub PBA
normal?
Yes
The problem is in the main PCB
assembly. Please replace it.
30 _ Troubleshooting
Set the input AC voltage.
No
(Check AC 120/240V)
Directly connect the terminal block.
(Connect in the order of Live 2, Neutral,
No
Live 1)
Connect the housing.
(Check 120V for AC power)
No
Check the wire.
No
Replace the sub PBA.
No
(Check DC power, signal and key)
Encourage Ring terminals use, but when use Spade terminals, that
confirm whether confirmed finish.
Spade terminals
Neutral
L2 L1
Earth
120V 240V
Neutral
L2 L1
Earth
Ring terminals