Read JBL SB 350 (serv.man4) Service Manual online
OPTICAL IN DOES NOT WORK
OPTICAL IN
DOES NOT
WORK
go
Check whether have
3V3_STB on pin1 of
J350
Check whether there is
signal on pin3 of J350
Yes
No
Check whether main
board or J352 cable
well connection
No
Replace J350
Yes
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