SCH20 Subwoofer POWER&AUDIO Wireless
Pairing button
Status light
ON/PAIRING
PAIRING_LED
PAIRING_KEY
PAIRING_KEY
PAIRING_LED
STB_3V3
STB_3V3
STB_3V3
STB_3V3
SUB_LRCK
4
SUB_MCLK
4
SUB_BCK
4
SUB_DATA
4
RESET_AMP
4
AMP_FAULT 4
AM
P_
M
U
TE
1
4
AM
P_
SD
A
4
AM
P_
SC
L
4
R621
33
Q606
NPN_3DG3904M
TP4
R615
4.7K
R622
33
R625
2.2K
R620
33
C613
0.1uF/16V/X7R
R613
10K
C
61
9
10
pF
/50V
/N
P0
R5
2.4nH
R1022
33
SW601
TS-1301
R623
100
C
61
8
10
pF
/50V
/N
P0
M1
Moduel interface
G
PI
O
17
12
EE
W
P/
G
PI
O
3
11
SC
L
10
SD
A
9
VD
D
8
USB
N
7
USB
P
6
G
PI
O
14
4
G
PI
O
25
3
G
PI
O
24
2
GPIO33
14
GPIO26
15
GPIO27
16
LRCK
17
DATA
18
SPI_CS
19
BCK
21
MCLK
22
GND
24
RST
23
G
PI
O
34
26
G
PI
O
35
27
G
PI
O
3/
DA
TA
28
G
PI
O
2
29
O
TP_
VP
P
31
G
PI
O
0
32
G
PI
O
1
33
SP
I_
CL
K
34
G
PI
O
15
35
SP
I_
DA
TA
36
G
ND
5
GND
20
VD
T_
IN
25
GND
39
ANT
40
GND
41
GND
38
G
ND
1
G
ND
13
G
ND
30
G
ND
37
LED601
LED_WHITE
C
61
6
10
pF
/50V
/N
P0
C16
0.8pF/50V/HQC
XP9
4PIN/2.0mm
1
1
2
2
3
3
4
4
R12
10K
C
61
7
10
pF
/50V
/N
P0
C17
0.8pF/50V/HQC
R624
4.7K
28
Before Servicing
This Unit
Electrical
Mechanical
Repair Information
Updating