Read JBL Electronics (serv.man2) Brochure online
5-5 Trouble shooting Chart
Speakers no sound
NG
Speaker no sound
Go
Check the power net and fix it
OK
NG
OK
Replace U16
Check music input port
Check power supply of U16
FB11: 3.3V
FB19——21: 12V
Check the IIS signal between the U14
and U16
JBL
AWAKE and RIZE Service Manual
Page 9 of 43
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