Read JBL SB 350 (serv.man4) Service Manual online
AUX IN DOES NOT WORK
AUX IN DOES
NOT WORK
go
Check whether have
+5V_A on pin8 of
U350,U351
Check whether there is
signal on pin5 of
U350,U351
Yes
No
Check whether main
board or J352 cable
well connection
No
Replace J351
Check whether there is
signal on pin1 of
U350,U351
Yes
Yes
Replace U350,U351
No
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