JBL CHARGE 2 (serv.man2) Service Manual ▷ View online
5-4 Trouble shooting Chart
BT cannot work
BT cannot work
Go
Yes
Connect BT ANT to main board
NO
Repair U3
No
Go
Enter into DUT connection mode, Check BT
work normal or not
Check the U3 (LDO_G9091) of main
board is work well or abnormal
Check BT_3V3 is normal or not
Replace U6 (BTM153)
No
Yes
Replace main board
Page 13 of 32
5-5 Trouble shooting Chart
AUX cannot work
AUX cannot work
Check the CN board to main board connector is
normal. And replace the CN board for comparison.
Connect well
No
Check the U7 (AK5358) and U9 (74LVC2G04GW)
of main board is work well or abnormal
Yes
Check the STB_3V3 and VDD_5V is work well or
abnormal
Check the AUD_DET is work well or
abnormal
No
Go
No
Check the U3 (LDO_G9091) and U6
(AS2910) of main board is work well or
abnormal
Replace main board
Go
Yes
Page 14 of 32
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
Page 15 of 32
L/R
3.
@
2<)--=
;2<
)(:
Power
Det
LM358
'*) '1
LM13700
4ɏ7.5W1%
GPIO
AUX IN
2S
+^ZKXTGR'4:
+
/-
'36
:6'
'*)'1
;'*)
39
OP
BA4510
OP
BA4560
';*/5*+:
;';>
I2
L+/-/R
+
;';>
39
LEDS*8
WHI*7+RED
-6/5
TAC1116
3 TO 16
Keys*5
Power Key
-6/5
other
power
single
0LF0:0
BT
Module
BM153
Keys*5
LEDS*2
White
-6/5
Power Key
BT
Upgrade
<',UX;9(
o
Input
DET
Battery
Charge
(7
)NGXMK
SGTGMKSKTZ
:69
-6/5
-6/5
(UUYZ
23
9=
359
-6/5
<,UX'3656
<,UX(:*KZ56
5V/2.3A/0.5A
2*5-
;:
Micr
o
(7
(2000mA/500mA)
Upgrade
No
No
Charge
9=
Li
Ͳbattery
3 7V/6000 Ah
(UUYZ
23
2*5
AS2910
9=
359
9=
359
<,UX'*)
-6/5
-6/5
(:
3OIXU;9(
9=
359
3.7V/6000mAh
359
<,UX'*)
-6/5
-6/5
6-1
6-1
Block Diagram:
Page 16 of 32
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