Toshiba SD-170EKB2 Manuale di servizio - Pagina 5
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The power can not be on or off
Check the power supply
on the power board is
normal.
Whether the connection
to S1 is broken.
Whether there is 0V and
3.3V voltage difference on
Pin 94 PCON of U1.
The power can't be
on or off
Go
Yes
Check if the CN3 on
the front board to CN5
Yes
on the decoder board
is in good contact.
Yes
Yes
Yes
1-2
No
Repair the power board
No
Check/Correct connection
No
Correct the connection
No
Replace U1.
T rouble shooting chart