Read JBL BD 300 Service Manual online
No output by Optical in
Go
No
No output by
Optical
Yes
Replace R375 and
U8
U8
Check the power of ,R375
and U8
and U8
Replace U8
Check the conn ector
of P4
of P4
No
Fix
P4
in mainboard
Yes
Trouble shooting chart
5- 7
JBL
SB 300 Service Manual
Page 14 of 41
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