JBL Partybox On-The-Go, Service Manual, Page: 21 / 31

Circuit Diagram-KEY PCBA
21
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
D D
C C
B B
A A
LD756 White
LD755 White
LD757 White
LD758 White
S3V3
C
798
104
C
800
10
U
F
R782 33
R783 33
AD1
24
AD0
18
INTN
22
GND
9
RSTN
23
SCL
19
SDA
20
P1_0
1
P1_1
2
P1_2
3
P1_3
4
P0_0
5
P0_1
6
P0_2
7
P0_3
8
P0_4
10
P0_5
11
P0_6
12
P0_7
13
P1_4
14
P1_5
15
P1_6
16
P1_7
17
VC
C
21
GND
25
IC750
AW9523B
C
799
104
R764
56
R766 56
R785 33
C
794
104
FB774 60
RCI009523-0001
C
796
22
6
C
797
10
4
R771 56
R772 56
R773 56
R776 56
R778 56
R779 56
LD753 Red
R780 56
VCC
LED_SDA
LED_SCL
S3V3
5 4
1 2 3 V
R
751
VR_BASS
5 4
1 2 3 V
R
750
VR_TRE
5 4
1 2 3 V
R
752
VR_Reverb
5 4
1 2 3 V
R
753
VR_Mic1
5 4
1 2 3
V
R
754
VR_Mic2
R751
0 R752
0 R753
0 R754
0 R755
0
V
R
_T
re
bl
e
VR
_B
AS
S
VR_Reverb
VR_Mic1
VR_Mic2
+
3
-
2
1
4 GND
IC757A
TLV9102
7
+
5
-
6
B+
8
IC757B
TLV9102
R844
24K
C857
22uF/10V
R837
0
R839 100K
R822 1K
R821
1K C844 22UF/10V
C853
22uF/10V
R840 100K
R841 10K
R845
10K C858
22uF/10V
C860
104
C861
100U/10V
R842 4.7
R829
3K3
R830 NC
R834
3K6
R831 1.8K
C855 100P
+
3
-
2
1
4 GND
IC753A
TLV9102
7
+
5
-
6
B+
8
IC753B
TLV9102
R796
12K
C802
22uF/10V
R792 0 R793 100K
R784 1K
R786
1K
C791
22UF/10V C793
22uF/10V
R794 100K
R797 10K
R799
10K
C
804
22uF
/10V
C806
104
C807
100U/10V
R795
4.7
R787
3K3
R788 NC
R790 24K R789 1.8K
C795 100P
C
820
104
C
821
22uF
R807 NC
FB777 0
C
822
33
C
823
33
R801
NC
S3V3
FB776 0
wireless module mute
W_MIC1
From wireless module
C
816
10
4
FB780 100
C
817
10U
F/
6.
3V
MIC/GT/ Wireless mic/Source
TO MIC JACK PCB
MIC2_DET
MIC2_IN
TO MIC JACK PCB
S3V3
C
763
104
LED_SDA
LED_SCL
MIC2_DET
MIC1_DET
C814
104
R802
10K
VR1_H
VR1_L
19.GND
15.GND
16.LED SCL
17.LED SDA
23.STB_LED_CTL
21.Wireless module mute
22.Guitar/Mic Control
1.GND
B
A
SS
B
OOS
T
Li
gh
tS
w
itc
h
Vo
L
+
Vo
L
-
PO
W
E
R
PLA
Y
/P
A
U
SE
BT
2.VR MIC2
3.VR MIC1
4.VR Reverb
5.VR BASS
6.VR Treble
20%
40%
60%
80%
100%
TO MainBoard
TO Main Board
R843
27K
R832 24K
R835 6.2K
R833 1.2K
Guitar/Mic Control
R757
33K
1
3
2
4
SW750
SW_TA4P
R758
33K
SW751
SW_TA4P
R759
33K
SW752
SW_TA4P
R760
33K
SW753
SW_TA4P
R761
33K
R762
33K
R763
NC
BK3V3
LD759 White R775 56
LOW BAT
wireless module mute
C
770
104
C
840
104
C
772
101
C
773
101
C
774
104
C
775
101
C
776
33
C
771
33
C
777
101
C
778
101
C
779
101
C
762
101
C
761
101
C
760
101
C
759
101
C
758
101
C
757
101
C
756
101
5%~20%
LD754
Amber
R767 56
St
an
db
y/
C
ha
rg
ei
ng
7.POWER/ON/OFF
8.BT
9.Play/Pause
10.VoL-
11.VoL+
12.Light Switch
13.Bass Boost
Guitar/Mic Control
C
837
101
C
838
101
C
780
101
C
781
101
24.MIC1_DET
25.MIC2_DET
26.9V
FB750 0
FB751 0
FB752 0
FB753 0
FB754 0
FB755 0
FB756 0
FB757 0
FB758 0
FB759 0
FB760 0
FB761 0
FB762 0
FB763 0
FB764 0
FB765 0
FB766 0
FB783 0
FB767 0
FB769 0
FB770 0
FB771 0
FB772 0
FB781 0
FB782 0
MIC1_IN
MIC1_DET
VR2_H
VR2_L
7V
7V
C815
104
R803
10K
Released by Eastech for Harman Industries for reference only
LED_RST
LED_RST
CN753
CN6/20
CN751
CN6/20
Guitar/Mic Control_1
14.Guitar/Mic Control_1
18.LED RST
BASS_LED
BASS_LED
S3V3
C
754
104
C
753
104
C
752
104
C
751
104
C
750
104
28.W_MUTE
27.GND
C859
22uF/10V
C805
22uF/10V
S3V3
BK3V3
C862
104
5
6
SW754
R756
33K
GUI
T
A
R
SW
POWE_LED
POWE_LED
BT_LED
BT_LED
GUITAR_LED
GUITAR_LED
GT_Button
BS
T
1
GN
D
2
FB
3
EN
4
VIN
5
SW
6
B
S
T
G
N
GG
D
FB EN
VIN SW
IC754
JW5026
FB775
FB_0603_100
C
809
104
C
810
10uF
/25V
R800
10K
R804
100K
L750
4.7UH
R
806
2K
1
1%
C
812
10uF
/10V
C
813
104
C
811
22U
/1
0V
C803
104
R
798
11.
3K
1%
+18V
5V
+18V
BS
T
1
GND
2
FB
3
EN
4
VIN
5
SW
6
IC804
JW5026
FB824
FB_0805_100
C8
46
104
C8
47
10uF
/25V
R
839
10K
R843
100K
L800
4.7UH
R
844
4.
3K
1%
C8
49
10uF
/10V
C8
50
104
C8
48
22U
/10V
C840 104
R
840
33K
1%
+18V
7V
C8
45
104
C
808
104
KEY PW_EN
20.KEY PW_EN
C
755
101
MIC_O
Guitar_O
R814
10
R816
10
R808 15K
C824 100P
R811 10K
+
3
-
2
1
4
GND
IC756A
TLV9102
R812 100K
MIC_IN R809 10K
R815 10K/1%
R817 10K/1%
C832 104 R819 15K
C835 100P
R838 NC
7
+
5
-
6
B+
8
IC756B
TLV9102
R823 100K
Guitar_IN C836 22UF/10V R820 10K
C847 104
C834
22UF/6.3V
C850
22UF/10V
R826
4.7
R791 560
R836 560
C826 22UF/10V
R805 0
W_MIC W_MIC
W+5V
FB778 0
30.W_RX
29.W_TX
25
26
27
28
29
30
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
J750
FB784 0
C
841
104
S3.3V
FB779 0
1
8
G
G
CN752
CN8/20_SMD
S3.3V
7V
S3V3 S3V3
BK3V3
FB786 0
C
839
104
BASS_BOOST
LED_SW
VOL+
VOL-
BASS_BOOST
LED_SW
VOL+
VOL-
PLAY/PAUSE
BT
POWER
PLAY/PAUSE
BT
POWER
R750 0
Q750
2SC945_SMT
R769
1K
R7
68
68
R765
22K
C830
22UF/10V
C831
22UF/10V
W_TX
W_RX
C
819
104
C
818
100
1 2
IC755A
SGM48754
8 9
IC755C
SGM48754
3 4
IC755B SGM48754
GN
D
7
VCC
14
B
5
C
6
D
12
A
13
IC755E
SGM48754
Guitar/Mic Control_1
1
7
G
G
CN750
CN7/20
WMIC_TX
WMIC_RX
W_TX
W_RX
5V W+5V
FB785
0603_100/2A
D S
G
Q752 3401
C
852
104
R824 100K R825
68K
b
3
c
2
e
1
Q753
2SC5343
KEY PW_EN
R827 10K R828
100K
C
851
22U
F/
6.
3V
TP812
C
848
104
C829 22UF/10V
C833
22UF/10V
C825 22UF/10V
C843 22UF/10V
C792 22UF/10V
C790 22UF/10V
C845
22UF/10V
C849 22UF/10V
C801 22UF/10V
C856 22UF/10V
W_MUTE
Q751
2S
C
94
5_S
M
T
R818 1K
W_MUTE
RCI003170-0001
+9V
FB773
0603_100/2A
1
2 3 IN OUT
ADJ
IC752
LM317
R777
750
C
782
104
C
785
104/
50V
R
781
2.
2K
C
787
104/
50V
C
784
104/
50
V
SW_+5V
TP795
S
W
756
SW_TA4P
L
D
750
W
hite
SW
75
5
SW_TA4P
L
D
752
Wh
ite
1
3
2
4
SW
757
S
W
_T
A
4P
L
D
751
W
hite
C
783
22
U
F
/1
0V
C
786 10U
F/
25V
RCI003170-0001
+9V
FB768
0603_100/2A
1
2 3 IN OUT
ADJ
IC751
LM317
R770
750
C
764
104
C
767
104/
50V
R
774
3.
4K
C
769
104/
50V
C
766
104/
50
V
TP784
C
765
22U
F
/10V
C
768
10U
F/
25V
7V
SW_+5V
C
842
104
C
788
100U
/3
5V
OPTION
C827 22UF/10V
C828 22UF/10V
R
813
0
R810 NC
C854
100U/10V
C846 100P
C789 100P
R
846
100K
LD763
Amber
L
D
760
Wh
ite
L
D
761
W
hite
L
D
762
W
hite
+9V
+9V
R847 NC
+9V
+9V
NC
R849 NC R848 NC
C865
47P
C866
47P
C863
47P
C864
47P
1
2
3 4
5 6
B
S
T
G
N
GG
D
FB EN
VIN SW
IC804
JW5026
FB824
FB_0805_100
C
84
644
10
4
C
84
744
10
uF
/FF2
5V
R
8
RR
39
10
K
R843
100K
L800
4.7UH
R
84
4
4.
3K
1%
C
84
944
10
uF
/FF1
0V
C
85
0
10
4
C
84
844
22
U
/
UU
10
V
C840 104
R
8
RR
40
33
K
1%
+18V
7V
C
84
544
10
4