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1
Block Diagrams (Audio section)
BADIS1732
AUX IN
(FRONT IN)
TX-SR444,HT-R494
MIC AMP
FRONT BOARD
Lch
Rch
MIC
MIC DET
D
TUNER PACK
Rch
Lch
Rch
TV
Lch
Rch
CD
Lch
Rch
SBR DIRECTION
BD/DVD
Lch
SBL DIRECTION
C
Rch
SR DIRECTION
CBL/SAT
Lch
SL DIRECTION
Rch
GAME2
Lch
C DIRECTION
Rch
R DIRECTION
VCR
Lch
L DIRECTION
BAPRC1758
Bluetooth Dongle
HRM1034
MAIN
OUT
HDMI
TX
ARC_SPDIF
HDMI_SPDIF
HDMI MCK
HDMI BCK
HDMI LRCK
HDMI FLR
B
DIR BCK
DIR LRCK
DIR FLR
DIR MCK
IN4
HDMI
RX
IN3
CX LRCK
CX SCLK
(BL/BR)
DSP SBLR
IN2
(SL/SR)
DSP SLR
(CT/SW)
DSP CSW
(FL/FR)
DSP FLR
IN1
HDMI BLOCK DIAGRAM
RI
RI
INTERFACE
COAX 1
(BD/DVD)
OPT1(TV)
A
OPT2(CD)
BAVD1735
1
2
MODEL NO. TX-SR343/444,HT-R494
BAAF1712
28
Q4001
27
NJW1298
26
25
22
FL
48
21
51
FR
19
L
ADCL
39
Q4003
18
R
44
ADCR
16
0 to -21dB / 3dB step
Downmix
15
FL/FR -12dB
SW +3.5dB
14
REC_A1L
31
13
32
REC_A1R
12
11
REC_A1L
33
10
34
REC_A1R
9
8
REC_B1L
35
7
36
REC_B1R
6
5
REC_C1L
37
4
38
REC_C1R
2
24
23
28
27
2ch ADC
COAX1
DIG CLK
DIG SD0
DIG SD1
DIR
OPT1
X1001-XTAL
OPT2
DIR BCK
11.2896MHz
FRONT
DIR LRCK
DIR MCK
PCM9211
OPT
DIR FLR
CX LRCK
DIR MCK
CX SCLK
Q1005
HDMI MCK
DSP SBLR
Q1001
HDMI BCK
DSP SLR
HDMI LRCK
DSP CSW
HDMI FLR
DSP FLR
X-Tl
MCLK
TC7SZU04FU
2
3
4
BLOCK DIAGRAM
(PART-1)
1
FL
FR
47
50
CEN
FL(DAC)
FL
70
LBIN
INVERTING
FL(MIX)
80
LAIN
FR(DAC)
69
RBIN
SL
INVERTING
FR(MIX)
79
FR
RAIN
C(DAC)
68
CBIN
SR
DIRECT C
78
CAIN
67
LSBIN
SL(DAC)
DIRECT SL
77
LSAIN
SR(DAC)
64
RSBIN
SBL
DIRECT SR
76
RSAIN
DIRECT SBL
75
LBAIN
63
SBL(DAC)
LBBIN
SBR
56
LBCIN
DIRECT SBR
74
RBAIN
SBR(DAC)
62
RBBIN
SW
55
RBCIN
61
SW(DAC)
SRCIN
0.5dB step/each VR
-
+
-
+
-
+
-
+
-
+
-
+
-
8ch DAC
(BL/BR)
(SL/SR)
(CT/SW)
Q1004
PCM1690
(FL/FR)
SPI
3
4
5
Schematic Diagram
AUDIO SECTION
100
FL
POWER AMPLIFIER
**
+29dB
99
FR
+29dB
**
98
CEN
+29dB
**
+29dB
97
SL
**
+29dB
96
SR
**
+29dB
95
SBL
**
+29dB
94
SBR
**
TX-SR343/444,HT-R494
Subwoofer
93
SW
SW Preout
AV=+20dB
**
TX-SR444,HT-R494
+
-
+
DIG CLK
DIG SDO
5
6
BAETC1715
HP DET
HEADPHONES
D
FRONT LEFT
FRONT RIGHT
CENTER
SURR. LEFT
SURR. RIGHT
TX-SR444,HT-R494
SUUR. BACK
/HEIGHT
LEFT
SUUR. BACK
C
/HEIGHT
RIGHT
TX-SR444
ZONE-B LEFT
ZONE-B RIGHT
SPEAKER TERMINALS
B
BADIS1732
VMCLK
(HDMISLC)
MICOM
VMSDO
FRONT
(HDMI SDA)
VMSDI
Q7009
DIGSDI
Q7501
FLDCLK
DIGSDO
ML9208A
MPD70F3746
DIGCLK
FLDSDO
A
SPI
SDI
SDI
Q7001
XTAL-X7001
SDO
SDO
EEPROM
4MHz
CLK
CLK
6
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