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