SB 26 - Harman Kardon Audio Service Manual (repair manual). Page 13

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SB26 Soundbar block diagram
g
L W
f
30W
2xHDMI IN
Avnera
Module
AVMD6301
Sub I2S
ARC  IN
I2Sx4
HDMI
Repeater
SiI9523
L Woofer 30W
BT
MCU_I2C
AVMD6301
HDMI  OUT
Down mix   
I2S*1
8
ȍ
Woofer
8
ȍ
SiI9523
16Mb Flash
BT
BM153
L Channel 
(SPDIF IN)
MCU_UART
Woofer
4
ȍ
Tweeter
TPA3116
AUX_IN
OP
ARC IN
OMCK
CS42528
8
ȍ
L  Tweeter 30W 
C
LK 
  
 I2Sx4
I2Sx1
R  Woofer 30W 
Optical_IN
RMCK
MUX
L F
8
ȍ
Woofer
8
ȍ
Woofer
H M
C
I2Sx4
I2C
Auto On DET
DSP
CS497014
X’tal
MUX
MCLK
A
T
O
Auto Turn On
4
ȍ
Tweeter
R Channel 
4MB
Fl
h
R  Tweeter 30W 
TPA3116
P
I_3
SPI_2
SPI
Auto Turn On
Flash
USB
ҙछ
㑻⫼
MCU
STM32F205V
MUX
SPI_1
S
P
Upgrade
CP2.0C
I2C_2
MCU_UART
IR &IR 
repeater
MCU_I2C
LDO
LDO
+3.3V 
㑻⫼
2K bit  
EEPROM
STM32F205V
E
I2C_1
+1.8V   500mA
D
FRONT PANEL
Key*5      
Ͼ 㡆
Ͼ㪱㡆
repeater
Power 
Adaptor
+24V 2.7A  
MOS
LDO
+3.3V_STB 
+5V
DC-DC
+5V_STB
+5V_STB
AD
LE
D
Standby power  0.5w
MOS
2Ͼঠ㡆LEDˇ1Ͼ㪱㡆LED
+24V AMP
6-1
6-1
Harman Kardon 
SB 26 Service Manual
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