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The power can not be on or off
The power can't be
Check the power supply
on the power board is
normal.
Yes
Check if the CON301
on the front board to
CN5 on the decoder
board is in good
Yes
Whether the connection
to K301 is broken.
Yes
Whether there is 0V and
3.3V voltage difference on
Pin 100 PCON of U1.
Yes
All manuals and user guides at all-guides.com
on or off
Go
Yes
4-2
No
Repair the power board
No
Check/Correct connection
No
Correct the connection
No
Replace U1.
T rouble shooting chart
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