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CHARGE 2 (serv.man2) - JBL Audio Service Manual (repair manual). Page 15

Read JBL CHARGE 2 (serv.man2) Service Manual online

5-6                             Trouble shooting Chart 
 
The speaker is no sound 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Yes 
The speaker is no 
sound 
Go 
Check the U8 (BT_BM153)、U5 (LM3481  )、U10（BA4510）
、U11
（BA4560）、U17（TPA313）of main board is work well or abnormal
No 
Check the AMP_MUTE 
is work well or abnormal
Yes 
Check the BT_3V3、AMP_12V、OPVCC_BAT、
OPVCC is work well or abnormal 
No 
Repair U3 、 U5,
 
Ensure that each 
power supply normal 
Replace main board
 
Yes 
Replace 
U8 (BT_BM153)、U5 (LM3481)、U10（BA4510）
、U11（BA4560）、U17
（TPA313）, Compare whether the device in question
 
No 
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