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No digital audio output
No digital audio output
Check the FB8 (digital audio) on
the output board is normal.
Check the R65 (digital
audio ) on the AV
board is normal.
Check the PIN14 of
U8 on the AV board is
+5V
Check the P1 of U8 (digital
audio) on the AV board is
normal.
Fix the connection XP3 on AV board
and JP2 on main board
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Go
Yes
Yes
Yes
Yes
Yes
Yes
4-2
No
Fix the connection XP4 on AV board
and JP2 on output board
No
Check / Replace R68¡¢C75.
No
Check the +5V power
supply on the AV board
No
Check P26 of JP2 on main board
signals is normal
Trouble shooting chart
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