JBL CHARGE 2 (serv.man2) Service Manual ▷ View online
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5-1 Trouble shooting Chart
Keys do not work
Led lights do not work but the keys work well
Some keys do
not work
Go
Yes
Connect well
No
Yes
Replace the key board or cable
Check 15pin FFC cable of connect key board
to main board is connect well
Change another key board for
Check the
main board ok or not. And you can also
replace the 15pin FFC cable for comparison.
Replace main board
No
Some led lights
do not work
Go
The led light maximum possible was damaged,
Change led light for comparison, otherwise
replace another key board.
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5-2 Trouble shooting Chart
USB port for external devices cannot be charged
USB port for external devices
cannot be charged
Go
No
Yes
Yes
No
Repair U4
Check 15pin FFC cable connect OK or not
Check the U4 (LM3481) of CN
board is work well or abnormal
Check the U2 (TPS2546) of CN
board is work well or abnormal
Connect well
Replace CN board or main board for
comparison.
Repair U2
No
Yes
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