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AV320T

BBK AV320T Schematic

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54321
6
F
47u/100V
R1052KR106
2K
10K
V101
VD101
SWM L1 R1 C1 SL1 SR1 GND
GND P_Rly P_RC P_LRM P_CSM
1N4148
22u/16V
E
XP9
1 2 3 4 5 6 7
CON7 XP13
1 2 3 4
D
CON5
5
S8050
4.7K V115
2N5401
V116 S8050
C
1K
10K
1K
10u/16V
10u/16V
V102
V103
2N5551
2N5551
R107 47
100u/16V
V104
2N5551
47u/100V
R1352KR136
V117 2N5551
R137 47
100u/16V
V119
2N5551
47u/100V
510
510
2K
2N5551
47 R109 1K
V118
47 R139 1K
47K
47u/100V
47K
VD102 1N4148
VD103 1N4148
VD105 1N4148
VD106 1N4148
33p/500V
33K/0.5W
2N5551
33p/500V
33K/0.5W
2N5551
R114 2.7K
V106
1.2K
1K
R144 2.7K
V121
1.2K
1K
Vs+
10K
B
4.7K
4.7K
A
22u/16V
22u/16V
V130 2N5401
33K
Vs+
4.7K
10u/16V
V131
47K
S8050
22u/16V
820
53
47n
1 2
27K
68p
4
LM1875
47n
Vs-
100/0.5W
V132
C2073
150
V105
2N5401
V107
2N5551
150
220/0.5W
150
V120
2N5401
V122 2N5551
150
100/0.5W
220/0.5W
100/0.25W
33K
100/0.25W
V133 A940
V134
C2073
100/0.25W
33K
100/0.25W
V135
A940
C130 1u/50VC129
1u/50V
471
471
AV320T AMPLIFIER.SCH
V112
2SD1047C
0.25/7W
0.25/7W
V113 2SB817C
V127
2SD1047C
0.25/7W
0.25/7W
V128 2SB817C
Vc+
VD104
4.3K R129
2.7K
1u/16V
4.3K
Vc-
Vc+
4.3K R159
2.7K
1u/16V
4.3K
Vc-
22u/16V
R172 47K
47K
22u/16V
1N4148
V114
2N5551
Vs+
15/2W
VD107
1N4148
V129
2N5551
820
R173 1K
1K
820
C155 47p
N105 LM1876
7
8
6
11
9
14
13 12
C156 47p
MUTEA MUTEB
STAN-A STAN-B
R182 33K
R175
24K
OUTA
A
VDDA GNDA VDDB GNDB
VEE
OUTB
B
24K
R185 33K
Vs-
15/2W
3
104
2 5 15
C135
10
104
4
104
1
Vs+
Vs+
Vs-
220u/25V
1
Vin
GND
2 1
Vin
10u/100V
GND
47n
47n
2
L7812
220u/25V
Vout
Vout
C141
4700u/35V
C142
4700u/35V
100u/16V
3
3
100u/16V
VD111
1N5404
VD112
1N5404 VD113
1N5404
VD114 1N5404
47n
47n
L2 R2 C2 SL2 SR2
GND
FL101
T6.3A250V
0.1u
0.1u
FL102
T6.3A250V
SWM Rly0 P_RC Over
Vc+
+12V DGND DGND
-12V
Vc-
XS7
CON4
XP6
CON4
XS8
CON9
XS5
CON3
F
1 2 3 4
E
1 2 3 4
D
C
1 2 3 4 5 6 7 8 9
B
1 2 3
A
1 2 3 4 56
54321
6
F
VD2.5
E
R109
100
D
49326_DI 49326_CK 49326_CS 49326_DO INT_49 DSPRST SDA SCK DARST
9
RR105 8*4.7K
C
B
C101
104
A
8415_ERR 8415_INT
XTAL2
G101
C103
12.288MHz
30P
R101 1M
R102 51
N101C
5 6
74HC04 N101E
11 10
74HC04
VD5
XTAL1
C104 30P
L107 FB
R113 100
VD3.3
1 2 3 4 5 6 7 8
L101 FB
C113
104
VD3.3
VD5
L121 1UH
147
1 2
N101A 74HC04
N101B
3 4
74HC04
C157 1U/16V
R114 100 R112 100 R154 470 R153 R152 100 R151 100 R150 100
L122 *
C202 30P
C105
C203
30P
C109
104
C110 104
C112 1U/16V
104
C159 104
R105 4K7
N105
CS49326-3
7
SCK
8
GPIO7
9
GPIO6
10
GPIO5
11
GPIO4
12
VD2
13
DGND2
14
GPIO3
15
GPIO2
16
GPIO1
17
GPIO0
R111 10K
C205
30P
C206
100
30P
R118
10K
C111
104
R119
C114
1.2K
472
C115
104
R162
470
X01
X02
R103 51
R104 51
101
C218 101
C219
75
R115
C108 104
R106 51
R107
R108
R110
4K7
4
5
3
6
DIN
EMOE
EMWR
XMT958
CS4923
/CS18DOUT19/INT20EXTMEM21SDATAN22VD323DGND324BCK125WCK126CMPDAT
1
SDA SCK
2 3 4 5 6 7 8
9 10 11 12 13
104
104
104
C207
C208
C209
75
R11675R117
SCLK
MCLK
2
44
1
43
VD1
MCLK
DGND1
DIN2
SCLK2
C204 30P
R155 51
SDA/CDOUT AD0/CS EMPH RXP0 RXN0 VA+ AGND FILT RST RMCK RERR RXP1 RXP2 RXP314RXP4
N106
L117 1UH
L119 1UH
C215 101
LRCK
SDIN1
42
41
BCK
WCK
27
DIN1
LRCK2
SCL/CCLK AD1/CDIN
CS8415ASO
SDIN2
40
AD0
AD1
AD2
/RESET
AGND
VAA FILT1 FILT2
CLKSEL
CLKIN
LR2
BCK2
28
SCLK1
RXP6 RXP5
VD+
DGND
OMCK
SDOUT OLRCK OSCLK
DC DD
H/S
INT
N101D 74HC04
R179 47K
N101F
74HC04
R181 47K R183 DNS
U
R164 470
R182
DNS
R161
51 51
R120
R121
10K
SDIN3
39 38 37 36 35 34 33 32 31 30 29
LRCK1
10K
C116 1U/16V
C117
2.2U/16V
C118 104
L104
R122
R123 10K
C120 471
FB
33K
C119
VD2.5
103
51
SCLK LRCK MCLK
DARST
SCK SDA
C123
1U/16V
C124
104
C125 1U/16V
C126
104
L113
C155
VD3.3
1U/16V
FB
C127 104
R156 51
R159
10K
DIN1
VD3.3
C128
C106
L114
104
1U/16V
C130 104
P17
PH_SW
KM
P_RLYC
3
3
PH_SW
N109 BM1117-3.3
Vin
N110 BM1117-2.5
Vin
XS14 CON7
SCLK1 LRCK1
28 27 26 25 24 23 22 21 20 19 18
DIN2
SCLK2
17 16 15
LRCK2
C210 104
VD3.3
C121
L102
104
FB
C135 1U/16V
C129
VD5
100U/16V
L103
X01
X02
L116
C214
FB
98
1312
1UH
104
C213
470
101
R178
L120 1UH
L118
C217
1UH
104
470
101
Rin
R180
C216
123456789
XS17 CON9
RX1
Lin
DIGITAL INPUT
RX2
RX3
VD5
+5VD
P14
P15
P16
1234567
P_LRM
P_SCM
10 11 12 13
L105 FB
L106 FB
1
1
1 2 3 4 5 6 7 8 9
1
2 3 4 5
6 7
Vout
GND
Vout
GND
N107 CS4360
VLS
MUTEC1
SDIN1
AOUTA1
SDIN2
AOUTB1
SDIN3
MUTEC2
SCLK
AOUTA2
LRCK
AOUTB2 MCLK VD GND
AOUTA3 /RST
AOUTB3 DIF1
MUTEC3 DIF0 M1 VLC14M2
VD5
VD3.3
N108
M0 MCLK
VL
REF_GND SDOUT GND VD
SCLK LRCK8RST
CS5340
2
C131
100U/16V
2
C134
100U/16V
VD103 1N4004
28 27 26 25 24 23 22
VA
21
AGND
20 19 18 17
VQ
16
FILT+
15
104
1u/16V
1u/16V
C143
C145
C144
C122
C156
R165
104
0Ohm
16
FILT+
AINR
AINL
M1
VA
VQ
VD3.3
VD2.5
15 14 13 12
11 10 9
C154 104
C158 104
C148 1U/16V
C150
C151
104
C152 1U/16V
C153
104
+12V VA5
C107 10U/16V
V102 5551
R157
2.2K
VD102
5.6V
C161 104
VD2.5VD3.3
DECODER(1).SCH
2320TA-1
104
1u/16V
104
DA_L
DA_L
DA_R
DA_R
DA_SL
DA_SL
DA_SR
DA_SR
DA_C
DA_C
DA_SW
DA_SW
L111
C146
104
FB
VA5
C147
L112
C149
VA5
1U/16V
FB
Ain-R
Ain-R
Ain-L
Ain-L
C132
10U/16V
R158 100K
R163 0Ohm
C136 104
C133
47U/16V
VA5VD5
F
E
D
C
B
A
1 2 3 4 56
54321
6
F
L115
+5VD
C163 104
VD101
R125
1N4148
47K
R124 22K
C162
RR102 8*4.7K
1 2 3 4 5 6 7 8
VD104 1N4148
9
E
XS18 CON13
LAT
CE
CLK
DATA
DO
P_DIST OK_DAT OK_CLK
P_KT
Remote
DST
D
DCK DDA
P10
1
P11
470
R166
2
P12
470
R167
3
P13
470
R168
4
P30
470
R169
5
P31
6
R170
7
R171
8
P34
9
P35
10
P36
11
P37
12
P25
13
P27
470
P26
470
+5V
P_SCM
P14
P_LRM
P15
P_RLYC
P16
KM
P17
R172 470
8415_INT
INT_49
+5V
9
RR103
1 2 3 4 5 6 7 8
8*4.7K
R177 10K
PH_SW
VD105
1N4148
R176 1K
R175
4.3K
1 2 3 4 5 6 7 8
9 10 11 12 13 14 15 16 17 18 19 20
V101 9014
N116
P89C238MBP/B
C164
10U/16V
P10(T2) P11(T2) P12 P13 P14 P15 P16 P17 RST/VPD P30(RXD) P31(TXD) P32(INT0) P33(INT1) P34(T0) P35(T1) P36(WR) P37(RD) XTAL2 XTAL1 VSS
C211
104
104
C212
C172
47U/16V
47U/16V
40
VCC
39
P00(AD0)
38
P01(AD1)
37
P02(AD2)
36
P03(AD3)
35
P04(AD4)
34
P05(AD5)
33
P06(AD6)
32
P07(AD7)
31
/EA(VPP)
30
ALE
29
/PSEN
28
P27(A15)
27
P26(A14)
26
P25(A13)
25
P24(A12)
24
P23(A11)
23
P22(A10)
22
P21(A9)
21
P20(A8)
+5V
1 2 3 4 5 6 7 8
RR104 8*4.7K
C
Rin
Rin
R128 100K
B
Lin
Lin
R130 22K
R131 100K
R126 10K
C165 331
R127 22K
6 5
2
3
7
N111B 5532
R129 10K
C167
-12V
331
C168 104
1
N111A 5532
8 4
C170 104
C166
10U/16V
C169
10U/16V
Ain-R
Ain-L
Ain-R
Ain-L
+12V
A
N115
24C02
4
3
L108 FB
VSS
A01A12A2
SDA5SCL6TEST7VDD
8
R173
R174
470
470
+5V
49326_DO
DSPRST SDA SCK DARST 49326_DI 49326_CK 49326_CS
P27 P26 P25
8415_ERR
XTAL1 XTAL2
9
DECODER(2) SCH
2320TB-1
R132 10K
C174
C175
R133
DA_SL
DA_SL
10U/16V
C171 104
R134
3.9K
5.6K C176
272
+5V
DA_SR
DA_SW
DA_C
DA_R
DA_L
DA_SR
DA_SW
DA_C
DA_R
DA_L
C178
10U/16V
C181
10U/16V
C184
10U/16V
C187
10U/16V
C190
10U/16V
R139 22K
R142
5.6K
R145
5.6K
R148
5.6K
R137
R136
3.9K
5.6K C179
272
R140 10K
C182 104
R143
3.9K
C185 272
R146
3.9K
C188 272
R149
3.9K
C191 272
471
6
5
2 3
6
5
2 3
6 5
2 3
7
C137
N112B 5532
R135 10K
C177
-12V
471
N112A
5532
8 4
+12V
R138 47K
C180 153
N113B 5532
R141 10K
C183
-12V
471
N113A
5532
8 4
+12V
R144 10K
C186 471
N114B
5532
R147 10K
C189
-12V
471
N114A 5532
8 4
10U/16V
C192 104
1
C138
10U/16V
C193 104
C139
10U/16V
7
C194 104
1
C140 10U/16V
C195 104
C141
7
10U/16V
C200 104
1
C142
10U/16V
C201 104
XS16 CON10
SR
1
SW
2
SL
3
AGND
4
FR
5
C
6
FL
7
AGND
8 9 10
L110
L109
FB
FB
C197 104
47U/16V
C196 104
C198
C199
47U/16V
+12V-12V
+12V
F
E
D
C
B
A
1 2 3 4 56
54321
6
F
VFD101 HL-D253
-30V
F1F2NOP3G15G26G37G48G59G610G711G812G913G1014G11
P143P242P341P440P539P638P737P836P935P1034P1133P1232P13
E
NOP44NOP45F46F
30
47
31
104
NOP16NOP17NOP18NOP19NOP20NOP21NOP22NOP23NOP24NOP25NOP26NOP27P1628P1529P14
15
-30V
NOP
4
+5VD
39
34
32
36
SG13/GR1627SG14/GR1528SG15/GR1429SG16/GR1330SG17/GR1231SG18/GR11
N101 PT6311
33
GR837GR738GR6
VEE
VDD
SG19/GR1035SG20/GR10
GR5 GR4 GR3 GR2 GR1
VDD LED5 LED4 LED3 LED2 LED1
GND
OSC
40 41 42 43 44 45 46
47 48 49 50 51 52
+5VD
47K
R108
4.7K
C106 104
100/0.25W
VD104 5R3HD
C105
47u/16V
+5VD
SW11SW22SW33SW44DOUT5DIN6NC7CLK8STB9K110K211K312K4
D
26
SG12/KS12
25
SG11/KS11
24
SG10/KS10
23
SG9/KS9
22
SG8/KS8
21
SG7/KS7
20
SG6/KS6
19
SG5/KS5
18
SG4/KS4
17
SG3/KS3
16
SG2/KS2
15
SG1/KS1
C
+5VD
+5VD
14
VDD
VD101
30V/1W
100/0.25W
VD105 5R3HD
V101
2N5551
47/0.5W
VD102
5.6V/0.5W
R115
4.7k/0.25w
47u/16V
+5VD
47u/35V
+5VD
103
13
S101
RP101B
INPTUSET
RVP-1
10k
10k
221
221
B
R103 470
R104 470
R105 470
221
4.7k
4.7k
4.7k
+5VD
270/0.5W
100
103
VD103 1N4004
1/0.25W
100u/35V
N102 HS0038A2
3
103
VS
OUT
2
GND
RP101A
100
3 2 1
RVP-1
100
L101 100uH
47u/16V
C113
1
P_RLY
DDA DCK DST FAN REMOTE
XS10
CON5
R122 100
XP15
CON9
~V3
1
~V3
2 3
F1
0
4 5
F2
From TRANS
1 2 3 4 5 6 7 8 9
From Signal Board
+5VD
103
F
E
D
C
B
AV320T FRONT PANEL.SCH
A
1 2 3 4 56
A
Principle and Maintenance Brochure for AV320T (RU)
Table of Contents
Chapter One: Product Introduction Chapter Two: Working Principle
I. Components of the Complete-machine II. Signal Processing Board III. Decoder Board IV. Panel V. Power Board
VI. Loudspeaker Board & Protection circuit Chapter Three: Appendix Appendix I. Connection Diagram and Principle Diagram Appendix II. Introduction to Major IC Pin Function
Chapter One: Product Introduction AV320T (RU), the recently launched power amplifier of superior quality, has successfully employed the DTS/AC-3 digital decoding functions to ensure high-quality sound effects, which eliminates the sound distortion and noise in audio signal processing. AV320T (RU) is characterized by:
1. Precise Operating Panel Interface: The complete-machine assembles a single power switch button, menu button and a big knob in the operating board, which are easy to operate.
2. DTS/AC-3 Decoding Function
3. with Fiber, Coaxial Signal Decoding Function
4. Built-in 5-Channel amplifier was adopted to accord with AC-3/DTS and stereo music playback. Strong in power, the main channel is 100w and the center& surround channel is 22w.
5. Equipped with 6-channel volume control and independent power control, and 7-segment electric equilibrium
6. Equipped with multi-electric equilibrium mode to serve music of different styles.
7. Digital sound field time-lagging function
8. with built-in radio function
9. Qualified with over-power and over-pressure intelligent protection function
10. Karaoke function and earphone output
Chapter Two Working Principle
I. Components of the Complete-machine AV320T (RU) consists of the following seven components:
1. Signal processing board: for signal gating, pre-amplifying and the pre-processing of Karaoke signals
2. Decoding board: in charge of the control to the whole power amplifier and the digital signal process;
3. Control Board: VFD Display, the menu button and main volume control
4. Power board and protection circuit: to supply the working voltage needed to unit circuit and carry out the protection function to the whole power amplifier;
5. Amplifier board: to amplify the power of the 5.1-channel signal and simulated signal;
6. Earphone board: to amplify the karaoke input and earphone output signal.
II. Signal Processing Board
1. The six input styles of AV320T (RU): Fiber input, coaxial input, CD, DVD, 5.1-channel and radio input. The digital signal of fiber and coaxial input is processed in decoding board through lines. The simulate input option of AV320T (RU)is realized through the two electric switches, the truth table is as follows:
CD4052 Truth Table
CD Radio DVD A 1 0 1 B 1 1 0
The three simulated input status : AV320T（RU）has the three simulated input states: radio, CD, DVD, which are controlled through signal 4052-A and 4052-B respectively(refer to the truth table). The gated signal is output from Pin 3 and Pin 13 of N101; then through N111 CD 4052, the main channel signals of the right and left are output through Pin1 and Pin12; the signal is finally processed in the decoding board. The simulated signal input in 5.1 state: The 5.1 simulated signal input of AV320T（RU）controls is gated by the two IC CD 4053s, Pin 9, Pin 10 and Pin 11 of which is controlled by the signal 5.1CH output from Pin 4 of M62446. When signal5.1CH becomes high level, the strobe becomes the State5.1 simulated signal input, under which the digital sound field disappears and all the signals becomes direct. When signal 5.1 CH becomes low level, the strobe becomes the signal composed through decoding. The shift control of direct mode and digital sound field mode: AV320T（RU）has direct mode and digital sound field mode, its strobe input is controlled by N111 CD 4052 and N102 CD 4053. When signal 4053-INT becomes high level, the IC is out of working status as it is connected to the emarginated terminal of N102, thus the main channel signal is output through Pin 6 and Pin 11 of N111, and directly transmitted to the hi-fi music signal processed by M62446. When 4053-INT becomes low level, the main channel signal is transmitted to decoding board for digital sound process, while N102 is still under working status.
2. The signal process of Karaoke After the signal of Karaoke transmitted from M-board is amplified in coupling amplifier, it is directly transmitted to Volume and Key Control IC PT 2315 for processing, after the reverberation delay is adjusted in PT2399, it is transmitted through band pass filter to loudspeaker for small-signal amplifying. As PT 2315 is controlled by CPU, the user may adjust it through the remote controller as they like. While the other signal, after being amplified and rectified, is used to control the switch triode V201 9014 and in turn to control the high level and low level of the Test Signal P-KT to test Karaoke signals. When the input Karaoke signal is strong enough to lead the direct current rectified to triode 9014, and to lower the P-KT signal, which indicates the input of Karaoke signals. When the system is unable to detect signals in a certain period of time, the system will automatically becomes soundless in the section of Karaoke and prevent the outside noise from affecting the audio effect.
3. The switch-on of fan When the amplifier is loaded, given that the power increases and the temperature raises fast, the
power amplifier equipped with fan for heat radiating. When volume is bigger than 45 DB, the signal of fan becomes high level, V103 and V105 becomes electrified and forms a circuit to switch on the fan. But when the earphone is loaded, the control line PH-SW becomes high level, then V104 becomes electrified and lowers the signal of the fan, consequently, no matter how high the system volume is, the fan will not be switched on.
III. Decoding Board
The main components of the decoding board are listed as follows: CPU: the controlling core of the power amplifier IC 493264：the high-performance digital audio decoder, including DOLBY decoding, DTS
decoding and DSP processing. IC 8415: Serial audio digital signal receiver IC CS5340：2-channel A/D shift IC CS 4360：6-channel A/D shift IC 24C02：status saving IC 74HC04：multiplex (MPX) inverter IC BM1117-3.3：3.3V stable voltage IC supplying power to CS8415, CS4923
Working Principle
After the fiber and coaxial signal go through the inductance filter and capacitance filter, it will be inverted in the inverter and then transmitted to Pin 4, Pin12 and Pin 14 of the serial audio digital signal receiver IC CS8415, through this IC, the serial audio digital signal is transformed into PCM signal and output through Pin 16(sampling rate signal), Pin 17(main channel clock signal) and Pin 18(audio data signal) to Pin 25(sampling rate control signal), Pin 26(clock signal) and Pin 22(PCM data input interface 1) of the digital audio decoder IC CS4923, and the data will then be processed. After the signal of the simulated right and left channels signal is transmitted through Line XS17 to decoding board for small-signal pre-processing , it will be transmitted to Pin 10 and Pin 12 of IC CS5340 for A/D shift, turning the simulated audio signal into PCM signal, and then transmitted from Pin 4(audio PCM signal), Pin 17(sampling rate signal) and Pin18(clock signal) of CS5340 to Pin 27, 28 and 29 of CS 4923, i.e. it is transmitted to the other PCM interface of CS4923 for data processing. In consequence, the digital sound field processing of simulated signal and the coaxial and fiber processing are relatively independent, if either of the processing does not work, the problem will more probably occurs before CS4923. CS4923 has the function of digital sound field processing, within which DSP processing, PROH processing and DOBLY/AC-3 processing takes place through the CPU. The audio PCM signal processed by CS 4923 is transmitted to CS4360 for D/A shift, turning the PCM signal back to the 6-channel simulated signal, then it filters the noise beyond the frequency range in the band pass filter, finally it is transmitted to input gating section for choice input. As the core of the whole machine, CPU is of vital importance. Through it, all control signals controls the actions and continuously check different signals and the user’s orders to control the action of every part of the machine. In case the CPU is of bad quality, the whole machine will not be able to work properly. In addition, this machine does not have the automatic searching function; instead, it will
automatically save and memorize the last working status and the first working status after the
n
machine being switching on. This machine is qualified with radio function, offering the users a variety of function choices. It receives the frequency signal through the radio head controlled directly by CPU and outputs the signal after being amplified through power amplifier. The radio head and LM62446 share the clock and the data line, while the other control lines are directly connected to CPU, and the L and R signals processed by the radio head are directly transmitted to the pre-amplifier for strobe input.
Ⅳ.Control Board
The control board mainly consists of VFD display, driver IC PT6311and remote receiver HSOO38A2 and signal lamp video circuit. It mainly assumes the task of man-computer dialogue and working status revelation.
Diagram:
Under the control of CPU: the DST status, DCK clock and DDA data control PT6311 to show the working status of the whole machine, in receiving the user’s orders, they control the circus of the whole machine, enabling the whole machine to work in a designated status. When the users operate the board buttons, the order of control is transmitted to PT6311 through the keyboard scanning circuit; while PT6311 is driven through encoding in the inner, and outputs the control data to CPU, which in turn control the circuit and VFD through PT6311. VFD101is a vacuum fluorescence display screen, it is highly characterized by high light. Its working principle is similar with the picture tube of televisions. Pin 1, 2, 46 and 47 supply power for the filament of the bulb; CPU ultimately controls SEG polar through its control over PT6311, enabling the characters appropriate with the working status to be revealed on the screen. The remote receiving circuit is mainly composed by remote control receiver HS0038A2, among which Pin 1 is connected to the ground, Pin 2 supplies the power and Pin 3 outputs the received signals and leads them to CPU to control the appropriate circuit.
V. Power B o a r d
The function of power board is to supply a variety of working voltages needed by the unit circuit
VFD
Display
Control Butto
U401
PT6311
Signal Light Control Area
DDA DCK DST
CPU
Remote
Receiver
of the whole machine. AV320（RU）applies a annular transformer of 335W. The Central Channel
p
r
r
r
N
r
r
r
and surround channel of AV320（RU）adopt LM1875 and LM4731 respectively, and LM4731 is amplified IC powered by dual channels, which adopts independent positive power source to supply electricity, enabling a high separation between the two surrounding channels; Compared with the previous products, it adds ±VSS power supply, which is illustrated as follows:
1. The two alternating currents of 38V firstly transmitted from the transformer are filtered and rectified through the four IN5404 and the two electrolysis condenser 15000uF/68V, and then the ±53V power is obtained for power supply of the right and left channels.
2. The two alternating currents of 21V secondly transmitted from the transformer are filtered and rectified through the four IN5404 and the two electrolysis condenser 47000uF/35V, and then the ±28V power is obtained for power supply of Channel SL/SR/C. In addition, the other ICs and collinear amplifier supply its IC with powers obtained through regulation from the regulator tube L7812 and L7912.
～26V
Board Display Screen
～220V50HZ
～38.5
Rectifica
V
-tion filte
R
ectifica
-tion filte
～2.2V
Filament voltage
Dual-channe l powe amplifier
～16.3V
egative feedback
R121,R108,C105
compound amplifie V132，V112
C,SL,SR channel
ower
amplifier
L IN
V101 V115 mute
Differential amplifier
constant current source circusV104,V107,VD102,VD1
Voltage Ampl stageV105
ifie
.
Temperature compensatio stage V106
compound amplifie stage V133，V113
Relay
Louds oeake
r
V. Loudspeaker Board and Protection circuit
I. Channel L and R Power Amplifying circuit: The channel L and R main loudspeaker circuit of AV320（RU）consists of discrete components, which is shown as follows: ( e.g: Channel L)
The channel signal is transmitted through coupler R101、R103、C101 to Polar B of differential amplifier stage V102, V102 and V103 compose the differential amplifier circuit with one-end input and output. Sound signals are transmitted from Polar C of V102 to Polar B of voltage amplifier V105, after the voltage is amplified; it is output to compound power amplifier. V104, V107, VD102 and VD103 compose constant current source circuit, among which VD102 and VD103 supply stable base current to V104 and V107. The emitter resistance of V104 decides the working current of differential amplifier stage, while the emitter resistance of V107 decides the working current of voltage amplifier stage. V132 and V112 compose composite tube amplifier, ensuring that the lowest-level energy of the power amplifier have sound current amplifying capacity, and they composes positive 1/2 duty cycle amplifying. V133 and V113 compose the negative duty cycle amplifying，the circuit construction is completely same with that of the upper tube. Temperature compensation tube V106 has two functions in the circuit: first, it is the base bias of the upper and lower tubes, its working status decides the stable working current of the compound amplifier stage, i.e. by adjusting the electric conduction degree of V106, we can set the static working point of compound amplifier stage , while the common method is to change the base resistance of V107; it also automatically adjust the working status of the compound amplifier stage after the temperature rises. The adjustment process is specified as follows:
Total current of output stage= working current +leakage current When the temperature rises, the leakage current increases and leads to the floating of static working point, which is harmful. Meanwhile, the leakage current of V106 increases, Uce decreases and in turn to decrease the bias-current of output stage, changing the working status and decreasing the working current of back-end amplifier, as a result, realizes temperature compensation. In the power amplifying circuit of AV320（RU）, the negative feedback of voltage is induced, which is composed of R121, R109 and C105, and is used to stabilize the static working point of differentiate stage. AV3120（RU）adopts direct output method, R111 and C116 connected with the output end form Roberl Network which prevents the high-frequency self-oscillation resulted from alternating current inductance in the loudspeaker voice coil.
2. Working principle of Channel R: (refer to the working principle of Channel L)
3.Mute circuit: When you press the button “Mute”, the remote control receiver transforms the signal into a signal of “mute” to CPU, form which Pin 35 and 36 send out an order of “high level mute” electrifying V115, V101 and V116, the left and right channels short-circuited the signal to the ground, consequently complete the function of mute control. The Power Amplifying circuit of C, SR and Sl: Compared with the machine in the past, the three channels of AV320（RU）adopts the exclusive power amplifier LM4731 and IC LM1875. LM4731 has 15 pins, among which Pin 2, 15 and 4 are its negative and positive power pins respectively, while Pin 7, 8, 12 and 13 are its in-phase input and out-phase input, the fixed output wattage of the IC with such wattage may reach 20 W and makes it possible for becoming automatic mute when the machine is on; while 1875 is a high-performance power amplifying IC with 5 pins, its application circuit is simple and has an output wattage of5 W in fixed status. Pin 5 and 3 are the power-supplying pins of positive and negative electloudspeaker.AppendixAppendix I.
54321
6
F
L/R
L/R
5.1CH(L/R/SL/SR/C/SW)
+5V
PH_SW PH_L
PH_R
4052_A /4052_B
2*COAXIAL/OPTICAL
4052*2
放大
放大
OK_CLK/OK_DATA
L/R
DO/CLK/DAT/CE
P_KT
检测
4558_B
4558_A
放大
LM4880
PT2315
P_RLY
DIGITAL AUDIO INPUT
COAXIAL/OPTICAL
TUNER
E
D
C
B
CD
DVD
5.1CH
1
L
2 3
R
1
L
2
3
R
9 8 7 6 5 4 3 2 1
MIC PHONE BOARD、
DECODER BOARD
DECODER IC,CPU
P_DISP
CPU
P_RLY
MIC_VOL
TONE
ECHO_VOL
ECHO
PT2399
CPU I/O :
VOL&TONE
M62446
0_LEVEL
CLK / DAT/ LAT
2*KEY
VFD
FAN
FUN VOLTUN_L/TUN_R
REMOTE
DCL/DDA/DST
PASS
INPUTSET
4053*2
DISPLAY BOARD
2*LED
PT6311
REMOTE
5.1CH 4053_INT
L/R/SL/SR/C/SW
STEREO INPUT
4558
CLK/DATA/LAT
OK_CLK/OK_DATA FAN DCL/DDA/DST P_LRM/P_SCM KM
DO/CE
REMOTE
P_RLY
P_KT
P_DISP
6311 I/O :
62446 I/O :
TUN_L/TUN_R
SL/SR
L/R
C
SW
KM
FAN
RLYC
4052_A /4052_B
5.1CH 4053_INT
P_LRM/P_SCM
AMPLIFIER BOARD
+12V
-12V
AGND
4558
5532
MUTE
L
R
R E I F
C
I L P
SL
M A
SR
SIGAL PROCESSING
POWER
Vs+ GND Vs-
4558
OK_L/R
OK_C
SW_OUT
SWM
Ower loading
Test
C/SR/SL AMPLIFIER
POWER
L
Y A L E
T C E T O R P
R
R
C
SL
SR
SW MUTE
+12V AGND
-12V
~VS
POWER
±6.8V
+5V
+6.8V AGND
-6.8V +5V~VS +5VD
Vc+
AGND
Vc-
DRIVE
RLYC
FR/FL AMPLIFIER POWER
POWER BOARD
F
E
D
C
B
A
1 2 3 4 56
A
54321
6
XS20
CE
TUNER_L
TUNER_R
COAX1
COAX2
OPTICAL
CON11
DVD
CD
From Audio Decoder
SR SW SL
AGND
FR C FL
AGND
-12V +12V
R
XC103A
L
SR
XC103B
SL
SW
XC103C
C
11 10
9 8 7 6 5 4 3 2 1
XC101C
XC101B
XC101A
XC102
RX178B
XP17
CON9
XP16 CON10
R
L
R
L
R
L
OUTPUT
9 8 7 6 5 4 3 2 1
1 2 3 4 5 6 7 8 9
10
R
L
R
L
R
L
VCC GND
DATA CLK DO
9
8 7
6 5 4
3 2 1
3 2 1
6
5 4
9 8 7
C109 104
RX3 RX2 DGND RX1 AGND
AGND
1 2 3
-12V +12V
R101 1K
R102 47K
R103 47K
R104 1K
R105 1K
R106 47K
R107 47K
R108 1K
R109 1K
R110 47K
R111 47K
R112 1K
C171 104
R115 1K
R116 47K
R117 47K
R118 1K
R119 1K
R120 47K
R121 47K
R122 1K
R123 1K
R124 47K
R125 47K
R126 1K
L101 47uH
47n
47u/16V
C106 104
VD5
F
E
D
C
B
A
V106 S8050
R139 1K
5.1CH
TUNER_R
TUNER_L
4052_B
4052_A
DVD-R CD-R
DVD-L CD-L
5.1CH
12 14 15 11
1 5 2 4 6
9
B
10
A
12 14 15 11
1 5 2 4 6
9
B
10
A
12 13
2 1
5 3
6 11 10
12 13
2
1
5
3
6 11 10
VD112
10V
10u/16V
10u/16V
L102 47uH
X0 X1 X2 X3
Y0 Y1 Y2 Y3 INH
B
A
X0 X1 X2 X3
Y0 Y1 Y2 Y3 INH
B A
R149 4K7
R150 4K7
CD4053
X0 X1
Y0 Y1
Z0 Z1
INH A B C9VEE
CD4053
X0 X1
Y0 Y1
Z0 Z1
INH A B C9VEE
VDD
VDD
+12V
13
X
3
Y
16
A+6.8V
VDD
8
VSS
7
A-6.8V
VEE
13
X
3
Y
16
VDD
A+6.8V
8
VSS
7
VEE
A-6.8V
INT
4053_INT
14
FR
X
15
FL
Y
4
C
Z
16
A+6.8V
8
Vss
7
A-6.8V
14
SR
X
15
SL
Y
4
SW
Z
16
A+6.8V
8
Vss
7
A-6.8V
470K
A+6.8V
6
5
4052_A 4052_B
4053_INT
5.1CH
R168 470K
22K
A
B
INT
5.1CH
N105B
4558
7
4.7u/16V
22K
22K
22K
1 2 3
4 5 6
4.7u/16V
7
8
4.7u/16V
9
4.7u/16V
10 11
4.7u/16V
12 13
4.7u/16V
14 15
4.7u/16V
16 17
18
822
19
15n
20
0.33u
21
A-6.8V A+6.8V
C131 47n
47u/16V
OUT4 OUT3 OUT2
OUT1 AVDD SWIN GNDS
SRIN SLIN GNDC CIN GNDR
RIN GNDL LIN BYPASR
BYPASL LTRE
LBASS3
LBASS2
LBASS1
-12V
AV320T SIGAL PR OCESSING(1)
R137
220/0.5W
VD101
6.8V C132 47n
M62446
+12V
DVDD
CLK
DATA
LATCH
DGND AGND
SWOUT
SROUT SLOUT
COUT ROUT LOUT
AVSS
RTRE
RBASS3
RBASS2
RBASS1
47u/16V
F
+12V-12V
N105A
2
3
4558
8 4
+12V
VD110
1N4148
VD111
1N4148
P_DISP
1
-12V +5VD
47n
CL1
4.7u/16V
CL2 CR1
4.7u/16V
CR2
42 41 40
39 38 37
C113 4.7u/16V
36
C114 4.7u/16V
35
C116 4.7u/16V
34
C118 4.7u/16V
33
C119 10u/16V
32
C121 10u/16V
31 30 29
28 27
26 25 24
23
22
C137 47n
822
15n
0.33u
47u/16V
L103 100uH
101
A-6.8V
47u/16V
E
CLK
CLK
DATA
LAT
SW-1
SR-1
SL-1
C-1
R-1
L-1
DATA
SW-1
LAT
SR-1 SL-1
D
C-1 R-1 L-1
R141 100
101
C
B
+12V
220/0.5W
XS6
-12V
VD102
6.8VC130
-12V
+12V
DGND DGND +12V
CON4
4 3 2 1
A
1 2 3 4 56
54321
6
F
R171 47K
SWM L1 R1 C1 SL1 SR1
LINE OUT
XC104
1
XS9
CON7
XS13
CON5
SW-OUT
2
1 2 3 4 5 6 7
From AMP Board
1 2 3 4 5
104
104
-12V-12V
R187
47K
P_RLY RLYC LRM SCM
C176 103
1
104
1000u/16V
+5VD
XS12
P_RLY
1
+5V
2
DGND
3
L-1
4
R-1
5
PH_SW
6
GND
E
D
C
B
A
CON8
SW-1
XP14
CON7
PH_SW
P_LRM
P_SCM
XS21
CON3
FAN
PH_SW
XS11
CON3
7
MIC
8
SW-1 C-1
C-1
L-1
L-1
R-1
R-1
SL-1
SL-1
SR-1
SR-1
OK
OK
KM
KM
PH_SW
7
KM
6
P_RLY
5
P_LRM
4
P_SCM
3 2 1
+5VD
PH_SW
P_LRM
P_SCM
1 2 3
FAN
PH_SW
R145 1
1 2 3
R146 1
4.7K
22u/16V
4.7K R144
4.7K
V101
2N5401
10K
VD103
1N4148 VD104
1N4148 VD105
1N4148 VD106
1N4148
10K
V104
9014
VD108 1N4004
VD109 1N4004
V102
S8050
LRM
LRM
SCM
SCM
VD107
1N4148
V103 9014
V105
S8050
104
R147 15K
R167
1/0.5W
104
4.7u/16V
4.7u/16V
R148 10K
R156 20K
R157 20K
R159 15K
R161 20K
R162 15K
R163 20K
R166 20K
6 5
2 3
6 5
C160 47P
2
3
6 5
2 3
C154 103
N106B
5532
C156 47P
R173 22K
-12V
N106A
5532
8 4
+12V
C158 47P
R175 33K
N107B
5532
R177 33K
-12V
N107A
5532
8 4
+12V
C162 47P
R179 22K
N108B
5532
C164 47P
R181 22K
-12V
N108A
5532
8 4
+12V
C155 10u/16V
7
1
C157 10u/16V
C159 10u/16V
7
C161 10u/16V
1
7
1
R172 1K
C1
L1
R1
R188 100
SL1
R189 100
SR1
AV320T SIGAL PR OCESSING(2)
3
P_RLY RLYC
LRM SCM
+12V +12V
47u/16V
47u/16V
N109 AMS1085-5
GND
Vin
Vout
2
F
E
D
C
B
A
1 2 3 4 56
54321
6
F
F
+12V
47n
VD202
1N4148
C210 47u/16V
5.6n
5.6n
R206 1K
47u/16V
1 2
3 4 5 6
7 8 9
N203 PT2315
REF
CLK
VDD
DATA
AGND
DGND
TREBL
LOUT
TREBR
ROUT
RIN
BOUT_R
BIN_R
LOUD_R
NC
BOUT_L
BIN_L
LOUD_L NC10LIN
9014
47K
20
OK_CLK
19
OK_DAT
18 17
16
4.7u/16V C216
15
68n
C217
14
68n
13 12 11
4.7u/16V
P_KT
P_KT
V201
103
OK_CLK OK_DAT
4.7u/16V R220 10K
101
E
R219 47K
R218 20K
-12v
R210
5.6K
4.7K C227
103
4.7u/16V
N202B
4558
6 5
7
22K
2.7K R227
2.7K
4.7u/16V
12K
15K
10K
R228
R229
681
681
15
16
F1-I
F2-O14F1-O
VCC1REF2AG3DG4CLK5VCO6CC17CC0
5.6n
N202A
2 3
1
4558
8 4
R221 1K
4.7u/16V
OK
OK
+12v
D
4.7u/16V
103 C232
5.6n
10K
R230
R231
R232 15K
0.1u
0.1u
9
12
11
13
P1-I10P2-I
F2-I
P1-O
P2-O
C
8
+12V
47u/16V C242 47n
47u/16V
VD203
103
C243
5.1V
0.22u
C241
0.22u
B
100/0.25W
VD201
N201B
9.1V
100u/16V
C202 4.7u/16V
4558
7
C205 10P
R204 100K
-12V
N201A
4558
2 3
1
8 4
+12V
E
C201 151
R201 33K
MIC
MIC
4.7u/16V
R202 4.7K
6
5
D
XP18 CON13
LAT
1
CE
2
CLK
3
DATA
4
DO
5
P_DIST
6
OK_DAT
7
XS15
CON9
8
9 10 11 12 13
1 2 3 4 5 6 7 8 9
C
OK_CLK P_KT Remote DST DCK DDA
+5VD
RLYC NC
DDA DCK DST FAN REMOTE
OK_DAT OK_CLK
P_KT
B
AV320T SIGAL PR OCESSING(3).SCH
A
A
1 2 3 4 56
54321
6
F
VD2.5
E
R109
100
D
49326_DI 49326_CK 49326_CS 49326_DO INT_49 DSPRST SDA SCK DARST
9
RR105 8*4.7K
C
B
C101
104
A
8415_ERR 8415_INT
XTAL2
G101
C103
12.288MHz
30P
R101 1M
R102 51
N101C
5 6
74HC04 N101E
11 10
74HC04
VD5
XTAL1
C104 30P
L107 FB
R113 100
VD3.3
1 2 3 4 5 6 7 8
L101 FB
C113
104
VD3.3
VD5
L121 1UH
147
1 2
N101A 74HC04
N101B
3 4
74HC04
C157 1U/16V
R114 100 R112 100 R154 470 R153 R152 100 R151 100 R150 100
L122 *
C202 30P
C105
C203
30P
C109
104
C110 104
C112 1U/16V
104
C159 104
R105 4K7
N105
CS49326-3
7
SCK
8
GPIO7
9
GPIO6
10
GPIO5
11
GPIO4
12
VD2
13
DGND2
14
GPIO3
15
GPIO2
16
GPIO1
17
GPIO0
R111 10K
C205
30P
C206
100
30P
R118
10K
C111
104
R119
C114
1.2K
472
C115
104
R162
470
X01
X02
R103 51
C207
R104 51
101
C218 101
C219
75
R115
C108 104
R106 51
R107
R108
R110
4K7
4
5
3
6
DIN
EMOE
EMWR
XMT958
CS4923
/CS18DOUT19/INT20EXTMEM21SDATAN22VD323DGND324BCK125WCK126CMPDAT
1
SDA SCK
2 3 4 5 6 7 8
9 10 11 12 13
104
104
104
C208
C209
75
R11675R117
SCLK
MCLK
2
44
1
43
VD1
MCLK
DGND1
DIN2
SCLK2
C204 30P
R155 51
SDA/CDOUT AD0/CS EMPH RXP0 RXN0 VA+ AGND FILT RST RMCK RERR RXP1 RXP2 RXP314RXP4
N106
L117 1UH
L119 1UH
C215 101
LRCK
SDIN1
42
41
BCK
WCK
27
DIN1
LRCK2
SCL/CCLK AD1/CDIN
CS8415ASO
SDIN2
40
AD0
AD1
AD2
/RESET
AGND
VAA FILT1 FILT2
CLKSEL
CLKIN
LR2
BCK2
28
SCLK1
RXP6 RXP5
VD+
DGND
OMCK
SDOUT OLRCK OSCLK
DC DD
H/S
INT
N101D 74HC04
R179 47K
N101F
74HC04
R181 47K R183 DNS
U
R164 470
R182
DNS
R161
51 51
R120
R121
10K
SDIN3
39 38 37 36 35 34 33 32 31 30 29
LRCK1
10K
C116 1U/16V
C117
2.2U/16V
C118 104
L104
R122
R123 10K
C120 471
FB
33K
C119
VD2.5
103
51
SCLK LRCK MCLK
DARST
SCK SDA
C123
1U/16V
C124
104
C125
1U/16V
C126
104
L113
C155
VD3.3
1U/16V
FB
C127 104
R156 51
R159
10K
DIN1
VD3.3
C128
C106
L114
104
1U/16V
C130 104
P17
PH_SW
KM
P_RLYC
3
3
PH_SW
N109 BM1117-3.3
Vin
N110 BM1117-2.5
Vin
XS14 CON7
SCLK1 LRCK1
28 27 26 25 24 23 22 21 20 19 18
DIN2
SCLK2
17 16 15
LRCK2
C210 104
VD3.3
C121
L102
104
FB
C135 1U/16V
C129
VD5
100U/16V
L103
X01
X02
L116
C214
FB
98
1312
1UH
104
C213
470
101
R178
L120 1UH
L118
C217
1UH
104
470
101
Rin
R180
C216
123456789
XS17 CON9
RX1
Lin
DIGITAL INPUT
RX2
RX3
VD5
+5VD
P14
P15
P16
1234567
P_LRM
P_SCM
10 11 12 13
L105 FB
L106 FB
1
1
1 2 3 4 5 6 7 8 9
1
2 3 4 5
6 7
Vout
GND
Vout
GND
N107 CS4360
VLS
MUTEC1
SDIN1
AOUTA1
SDIN2
AOUTB1
SDIN3
MUTEC2
SCLK
AOUTA2
LRCK
AOUTB2 MCLK VD GND
AOUTA3 /RST
AOUTB3 DIF1
MUTEC3 DIF0 M1 VLC14M2
VD5
VD3.3
N108
M0 MCLK
VL
REF_GND SDOUT GND VD
SCLK LRCK8RST
CS5340
2
C131
100U/16V
2
C134
100U/16V
VD103 1N4004
AGND
FILT+
FILT+
AINR
AINL
28 27 26 25 24 23 22
VA
21 20 19 18 17
VQ
16 15
104
104
1u/16V
1u/16V
C143
C145
C144
C122
C156
R165
104
0Ohm
16
M1
15 14 13
VA
12
11
VQ
10 9
VD3.3
+12V VA5
C154 104
VD2.5
C107 10U/16V
C158 104
C147
1u/16V
C149
C148
1U/16V
1U/16V
C150
C151
104
104
C152
1U/16V
C153
104
V102 5551
R157
2.2K
VD102
5.6V
C161 104
VD2.5VD3.3
DECODER(1).SCH
2320TA-1
C146
104
10U/16V
DA_L DA_R
DA_SL DA_SR
DA_C DA_SW
Ain-R
Ain-L
C132
R158 100K
R163 0Ohm
L111 FB
L112 FB
DA_SL
DA_SR
DA_SW
Ain-R
Ain-L
DA_L DA_R
DA_C
VA5
VA5VD5
VA5
C136 104
C133
47U/16V
F
E
D
C
B
A
1 2 3 4 56
54321
6
F
L115
+5VD
C163 104
VD101
R125
1N4148
47K
R124 22K
C162
RR102 8*4.7K
1 2 3 4 5 6 7 8
VD104 1N4148
9
E
XS18 CON13
LAT
CE
CLK
DATA
DO
P_DIST OK_DAT OK_CLK
P_KT
Remote
DST
D
DCK DDA
P10
1
P11
470
R166
2
P12
470
R167
3
P13
470
R168
4
P30
470
R169
5
P31
6
R170
7
R171
8
P34
9
P35
10
P36
11
P37
12
P25
13
P27
470
P26
470
+5V
P_SCM
P14
P_LRM
P15
P_RLYC
P16
KM
P17
R172 470
8415_INT
INT_49
+5V
9
RR103
1 2 3 4 5 6 7 8
8*4.7K
R177 10K
PH_SW
VD105
1N4148
R176 1K
R175
4.3K
1 2 3 4 5 6 7 8
9 10 11 12 13 14 15 16 17 18 19 20
V101 9014
N116
P89C238MBP/B
C164
10U/16V
P10(T2) P11(T2) P12 P13 P14 P15 P16 P17 RST/VPD P30(RXD) P31(TXD) P32(INT0) P33(INT1) P34(T0) P35(T1) P36(WR) P37(RD) XTAL2 XTAL1 VSS
C211
104
104
C212
C172
47U/16V
47U/16V
40
VCC
39
P00(AD0)
38
P01(AD1)
37
P02(AD2)
36
P03(AD3)
35
P04(AD4)
34
P05(AD5)
33
P06(AD6)
32
P07(AD7)
31
/EA(VPP)
30
ALE
29
/PSEN
28
P27(A15)
27
P26(A14)
26
P25(A13)
25
P24(A12)
24
P23(A11)
23
P22(A10)
22
P21(A9)
21
P20(A8)
+5V
1 2 3 4 5 6 7 8
RR104 8*4.7K
C
Rin
Rin
R128 100K
B
Lin
Lin
R130 22K
R131 100K
R126 10K
C165 331
R127 22K
6 5
2
3
7
N111B 5532
R129 10K
C167
-12V
331
C168 104
1
N111A 5532
8 4
C170 104
C166
10U/16V
C169
10U/16V
Ain-R
Ain-L
Ain-R
Ain-L
+12V
A
N115
24C02
4
3
L108 FB
VSS
A01A12A2
SDA5SCL6TEST7VDD
8
R173
R174
470
470
+5V
49326_DO
DSPRST SDA SCK DARST 49326_DI 49326_CK 49326_CS
P27 P26 P25
8415_ERR
XTAL1 XTAL2
9
DECODER(2) SCH
2320TB-1
R132 10K
C174
C175
R133
DA_SL
DA_SL
10U/16V
C171 104
R134
3.9K
5.6K C176
272
+5V
DA_SR
DA_SW
DA_C
DA_R
DA_L
DA_SR
DA_SW
DA_C
DA_R
DA_L
C178
10U/16V
C181
10U/16V
C184
10U/16V
C187
10U/16V
C190
10U/16V
R139 22K
R142
5.6K
R145
5.6K
R148
5.6K
R137
R136
3.9K
5.6K C179
272
R140 10K
C182 104
R143
3.9K
C185 272
R146
3.9K
C188 272
R149
3.9K
C191 272
471
6
5
2 3
6
5
2 3
6 5
2 3
7
C137
N112B 5532
R135 10K
C177
-12V
471
N112A
5532
8 4
+12V
R138 47K
C180 153
N113B 5532
R141 10K
C183
-12V
471
N113A
5532
8 4
+12V
R144 10K
C186 471
N114B
5532
R147 10K
C189
-12V
471
N114A 5532
8 4
10U/16V
C192 104
1
C138
10U/16V
C193 104
C139
10U/16V
7
C194 104
1
C140 10U/16V
C195 104
C141
7
10U/16V
C200 104
1
C142
10U/16V
C201 104
XS16 CON10
SR
1
SW
2
SL
3
AGND
4
FR
5
C
6
FL
7
AGND
8 9 10
L110
L109
FB
FB
C197 104
47U/16V
C196 104
C198
C199
47U/16V
+12V-12V
+12V
F
E
D
C
B
A
1 2 3 4 56
54321
6
F
VFD101 HL-D253
-30V
F1F2NOP3G15G26G37G48G59G610G711G812G913G1014G11
P143P242P341P440P539P638P737P836P935P1034P1133P1232P13
E
NOP44NOP45F46F
30
47
31
104
NOP16NOP17NOP18NOP19NOP20NOP21NOP22NOP23NOP24NOP25NOP26NOP27P1628P1529P14
15
-30V
NOP
4
+5VD
39
34
32
36
SG13/GR1627SG14/GR1528SG15/GR1429SG16/GR1330SG17/GR1231SG18/GR11
N101 PT6311
33
GR837GR738GR6
VEE
VDD
SG19/GR1035SG20/GR10
GR5 GR4 GR3 GR2 GR1
VDD LED5 LED4 LED3 LED2 LED1
GND
OSC
40 41 42 43 44 45 46
47 48 49 50 51 52
+5VD
47K
R108
4.7K
C106 104
100/0.25W
VD104 5R3HD
C105
47u/16V
+5VD
SW11SW22SW33SW44DOUT5DIN6NC7CLK8STB9K110K211K312K4
D
26
SG12/KS12
25
SG11/KS11
24
SG10/KS10
23
SG9/KS9
22
SG8/KS8
21
SG7/KS7
20
SG6/KS6
19
SG5/KS5
18
SG4/KS4
17
SG3/KS3
16
SG2/KS2
15
SG1/KS1
C
+5VD
+5VD
14
VDD
VD101
30V/1W
100/0.25W
VD105 5R3HD
V101
2N5551
47/0.5W
VD102
5.6V/0.5W
R115
4.7k/0.25w
47u/16V
+5VD
47u/35V
+5VD
103
13
S101
RP101B
INPTUSET
RVP-1
10k
10k
221
221
B
R103 470
R104 470
R105 470
221
4.7k
4.7k
4.7k
+5VD
270/0.5W
100
103
VD103 1N4004
1/0.25W
100u/35V
N102 HS0038A2
3
103
VS
OUT
2
GND
RP101A
100
3 2 1
RVP-1
100
L101 100uH
47u/16V
C113
1
P_RLY
DDA DCK DST FAN REMOTE
XS10
CON5
R122 100
XP15
CON9
~V3
1
~V3
2 3
F1
0
4 5
F2
From TRANS
1 2 3 4 5 6 7 8 9
From Signal Board
+5VD
103
F
E
D
C
B
AV320T FRONT PANEL.SCH
A
1 2 3 4 56
A
54321
6
F
100u/16V
E
L101 47uH
47K
473
R103 4.7K
10u/16V
+5V
47K
R104 4.7K
4.7K
C104 10u/16V
XP14
P_RLY
1
+5VD
2
CON8
DGND
3
L-1
4
R-1
5
PH_SW
6
GND
7
MIC
8
D
+5V
84
N100A LM4880
3
2
10K
V101 8050
5
6
R107 10K
R108 10K
N100B LM4880
C106 330u/16V
1
7
330u/16V
R109
47K
X100
+5V
PH_R PH_L
47K
9 8 7 6 5 4 3 2 1
MIC
C
MIC
F
E
D
C
C101 103
C100 103
B
B
AV320T HEADPHONE.SCH
A
1 2 3 4 56
A
54321
6
F
C100
22n
VD100 1N5404
VD101
FL100
XS1
CON2
T6.3AL250V
2 1
CT7 472
E
~220V 50HZ
D
XP7
4
OVER
3
P_RC
2
RLY0
1
SWM
From AMPFrom AMP
CON4
C
XP8
1
L2
2
R2
3
C2
4
SL2
5
SR2
6
VC+
VC+
7
GND
8
GND
9
VC-
VC-
B
CON9
RLY0 SWM
VD108
IN4148
XS2
1
TO SWITCH
2
CON2 XS3
1
TO TRANS
2
CON2
VD113
47/3W
1N4004
1K
2.2u/16V
4.7/1W
4.7/1W
4.7/1W
4.7/1W
4.71W
C116 0.1u
C117 0.1u
C118 0.1u
C119 0.1u
C120 0.1u
V100 C9014
L100
0.7UH
L101
0.7UH
V101 C9014
From TRANS
XS4
~V1
0 ~V1 V-RLY
CON4
100u/35V
V102 C9014
1 2 3 4
104
4.7K
220u/16V
10k
220u/16V
1
2
XL101A
WP6
0.22u
0.22u
VD110
IN4148
R108
100K
R107
100K
1
2
XL101A
WP6
FL101
T8AL250V
FL102
T8AL250V
V103 C9015
C101 22n
C105 22n
C111 22n
VD111
5.1V
9
10
11
12
13 14
Y100
RELAY-4
VD112
1N4148
1N5404
VD102 1N5404
VD103 1N5404
VD104 1N5404 VD105
1N5404
VD106 1N5404 VD107 1N5404
103 C112
103
XL101A
1 5
2 6
3 7
4
SWM
8
RLY0
XL100A
1
1
2
2
WP6
V104 C8050
Vc+
0.1u
0.1u
Vc-
XL100A
1
2
WP4
WP4
V105 C9014
F
E
D
C
B
AV320T POWER.SCH
A
1 2 3 4 56
A
Diagram 9. Power Board Appendix II. 1、CS4360
CS4360is a 6-channel audio digital/modulus shift circuit produced by CIRRUS LOGIC, it adjusts the digital volume through software, the adjusting coefficient of every scale is 1dB;with a fading range of 119 d, it adopts +3.3V or +5V power voltage. With 28 pins within it, the features are described as follows：
①、Sampling delicacy of 24 digits ②、highest sampling frequency of 192KHZ ③、Dynamic range：102dB ④、signal to noise ratio：-90 dB ⑤、low power: The power is105mW at the +3.3Vvoltage working mode.
The function of CS4360is as follows:
Pin Name Function Pin Name Function
1 VLS Serial audio power supply,+3.3V 15 M2 Mode 2
2 SDIN1 Serial audio Data1input 16 FILT+ In-phase feedback voltage output
3 SDIN2 Serial audio Data1input 17 VQ Out Filter of static working voltage
4 SDIN3 Serial audio Data1input 18 MUTEC3 Output 3 mute control
5 SCLK BCLK 19 AOUTB3 Simulated Audio 3 output
6 LRCK Right and light channel clock 20 AOUTA3 Simulated Audio 3 output
7 MCLK Main clock input 21 GND ground
8 VD Digital power，+3.3V 22 VA Simulated power，+5V
9 GND ground 23 AOUTB2 Simulated Audio 2 output
10 RST Restoration input 24 AOUTA2 Simulated Audio 2 output
11 SCL Serial control clock 25 MUTEC2 Output 2 mute control
12 SDA Serial control data 26 AOUTB1 Simulated Audio 1 output
13 CS/M1 Chip choice/mode 1 27 AOUTA1 Simulated Audio 1 output
14 VLC Power-supply for Control port,+3.3V 28 MUTEC1 Simulated Audio 1 output
2、CS 4923 CS4923 is a data processing IC, including DOLBY decoding, DTS decoding and DSP processing，the function of its main pins are as follows: PIN 30： main clock input PIN 31： the alternating internal clock to Clock DSP when port is low PIN 8－11、14－17：data address output and data input port PIN 7：I PIN 19：I
2
Cformula communication clock input port
2
C formula communication data input port PIN 5：address and data output and input lock PIN 21：outer memorizing choice PIN 36：restoration input port PIN 22：PCM audio data input 1 PIN 27：PCM audio data input 2 PIN 25、28：PCM audio data input clock 1 and 2 PIN 26、29：PCM audio data sampling rate output port PIN 42：audio data sampling rate output port PIN 39、40、41：digital audio output port PIN 43：audio data output position clock PIN 44：main audio clock
4. CS5340
CS5340 is a dual-channel A/D shift IC, its function is to turn the simulated signal into PCM
signal for CS4923to process the digital sound field. The main functions of its main pins are
as follows: PIN1、PIN16：mode choice PIN2：main audio clock PIN3：digital signal input and output power PIN4：audio data output PIN5、PIN14：pin to ground PIN6：digital power PIN7：rate sampling control PIN8：right and left clock signals PIN9：restoration signal PIN10、PIN12：input of simulated signals PIN13： power for simulated sections PIN15：in-phase reference voltage
5. CS 8415
PIN1：input and output control data line PIN2：bytes control PIN4、PIN5：serial audio signal input port PIN12-15，PIN25、26：added serial audio signal input port PIN6：power supply PIN9：restoration signal
54321
6
F
100u/16V
E
L101 47uH
47K
473
R103 4.7K
10u/16V
+5V
47K
R104 4.7K
4.7K
C104 10u/16V
XP14
P_RLY
1
+5VD
2
CON8
DGND
3
L-1
4
R-1
5
PH_SW
6
GND
7
MIC
8
D
+5V
84
N100A LM4880
3
2
10K
V101 8050
5
6
R107 10K
R108 10K
N100B LM4880
C106 330u/16V
1
7
330u/16V
R109
47K
X100
+5V
PH_R PH_L
47K
9 8 7 6 5 4 3 2 1
MIC
C
MIC
F
E
D
C
C101 103
C100 103
B
B
AV320T HEADPHONE.SCH
A
1 2 3 4 56
A
54321
6
F
C100
22n
VD100 1N5404
VD101
FL100
XS1
CON2
T6.3AL250V
2 1
CT7 472
E
~220V 50HZ
D
XP7
4
OVER
3
P_RC
2
RLY0
1
SWM
From AMPFrom AMP
CON4
C
XP8
1
L2
2
R2
3
C2
4
SL2
5
SR2
6
VC+
VC+
7
GND
8
GND
9
VC-
VC-
B
CON9
RLY0 SWM
VD108
IN4148
XS2
1
TO SWITCH
2
CON2 XS3
1
TO TRANS
2
CON2
VD113
47/3W
1N4004
1K
2.2u/16V
4.7/1W
4.7/1W
4.7/1W
4.7/1W
4.71W
C116 0.1u
C117 0.1u
C118 0.1u
C119 0.1u
C120 0.1u
V100 C9014
L100
0.7UH
L101
0.7UH
V101 C9014
From TRANS
XS4
~V1
0 ~V1 V-RLY
CON4
100u/35V
V102 C9014
1 2 3 4
104
4.7K
220u/16V
10k
220u/16V
1
2
XL101A
WP6
0.22u
0.22u
VD110
IN4148
R108
100K
R107
100K
1
2
XL101A
WP6
FL101
T8AL250V
FL102
T8AL250V
V103 C9015
C101 22n
C105 22n
C111 22n
VD111
5.1V
9
10
11
12
13 14
Y100
RELAY-4
VD112
1N4148
1N5404
VD102 1N5404
VD103 1N5404
VD104 1N5404 VD105
1N5404
VD106 1N5404 VD107 1N5404
103 C112
103
XL101A
1 5
2 6
3 7
4
SWM
8
RLY0
XL100A
1
1
2
2
WP6
V104 C8050
Vc+
0.1u
0.1u
Vc-
XL100A
1
2
WP4
WP4
V105 C9014
F
E
D
C
B
AV320T POWER.SCH
A
1 2 3 4 56
A
54321
6
F
F
+12V
47n
VD202
1N4148
C210 47u/16V
5.6n
5.6n
R206 1K
47u/16V
1 2
3 4 5 6
7 8 9
N203 PT2315
REF
CLK
VDD
DATA
AGND
DGND
TREBL
LOUT
TREBR
ROUT
RIN
BOUT_R
BIN_R
LOUD_R
NC
BOUT_L
BIN_L
LOUD_L NC10LIN
9014
47K
20
OK_CLK
19
OK_DAT
18 17
16
4.7u/16V C216
15
68n
C217
14
68n
13 12 11
4.7u/16V
P_KT
P_KT
V201
103
OK_CLK OK_DAT
4.7u/16V R220 10K
101
E
R219 47K
R218 20K
-12v
R210
5.6K
4.7K C227
103
4.7u/16V
N202B
4558
6 5
7
22K
2.7K R227
2.7K
4.7u/16V
12K
15K
10K
R228
R229
681
681
15
16
F1-I
F2-O14F1-O
VCC1REF2AG3DG4CLK5VCO6CC17CC0
5.6n
N202A
2 3
1
4558
8 4
R221 1K
4.7u/16V
OK
OK
+12v
D
4.7u/16V
103 C232
5.6n
10K
R230
R231
R232 15K
0.1u
0.1u
9
12
11
13
P1-I10P2-I
F2-I
P1-O
P2-O
C
8
+12V
47u/16V C242 47n
47u/16V
VD203
103
C243
5.1V
0.22u
C241
0.22u
B
100/0.25W
VD201
N201B
4558
7
2 3
9.1V
C202 4.7u/16V
C205 10P
R204 100K
100u/16V
-12V
N201A
4558
1
8 4
+12V
E
C201 151
R201 33K
MIC
MIC
4.7u/16V
R202 4.7K
6
5
D
XP18 CON13
LAT
1
CE
2
CLK
3
DATA
4
DO
5
P_DIST
6
OK_DAT
7
XS15
CON9
8
9 10 11 12 13
1 2 3 4 5 6 7 8 9
C
OK_CLK P_KT Remote DST DCK DDA
+5VD
RLYC NC
DDA DCK DST FAN REMOTE
OK_DAT OK_CLK
P_KT
B
AV320T SIGAL PR OCESSING(3).SCH
A
A
1 2 3 4 56
54321
6
XS20
CE
TUNER_L TUNER_R
COAX1
COAX2
OPTICAL
CON11
DVD
CD
From Audio Decoder
SR SW SL
AGND
FR C FL
AGND
-12V +12V
R
XC103A
L
SR
XC103B
SL
SW
XC103C
C
11 10
9 8 7 6 5 4 3 2 1
XC101C
XC101B
XC101A
XC102
RX178B
XP17
CON9
XP16 CON10
R
L
R
L
R
L
OUTPUT
9 8 7 6 5 4 3 2 1
1 2 3 4 5 6 7 8 9
10
R
L
R
L
R
L
VCC GND
DATA CLK DO
9
8 7
6 5 4
3 2 1
3 2 1
6
5 4
9 8 7
C109 104
RX3 RX2 DGND RX1 AGND
AGND
1 2 3
-12V +12V
R101 1K
R102 47K
R103 47K
R104 1K
R105 1K
R106 47K
R107 47K
R108 1K
R109 1K
R110 47K
R111 47K
R112 1K
C171 104
R115 1K
R116 47K
R117 47K
R118 1K
R119 1K
R120 47K
R121 47K
R122 1K
R123 1K
R124 47K
R125 47K
R126 1K
L101 47uH
47n
47u/16V
C106 104
VD5
F
E
D
C
B
A
V106 S8050
R139 1K
5.1CH
TUNER_R
TUNER_L
4052_B
4052_A
DVD-R CD-R
DVD-L CD-L
5.1CH
12 14 15 11
1 5 2 4 6
9
B
10
A
12 14 15 11
1 5 2 4 6
9
B
10
A
12 13
2 1
5 3
6 11 10
12 13
2
1
5
3
6 11 10
VD112
10V
10u/16V
10u/16V
L102 47uH
X0 X1 X2 X3
Y0 Y1 Y2 Y3 INH
B
A
X0 X1 X2 X3
Y0 Y1 Y2 Y3 INH
B A
R149 4K7
R150 4K7
CD4053
X0 X1
Y0 Y1
Z0 Z1
INH A B C9VEE
CD4053
X0 X1
Y0 Y1
Z0 Z1
INH A B C9VEE
VDD
VDD
+12V
13
X
3
Y
16
A+6.8V
VDD
8
VSS
7
A-6.8V
VEE
13
X
3
Y
16
VDD
A+6.8V
8
VSS
7
VEE
A-6.8V
INT
4053_INT
14
FR
X
15
FL
Y
4
C
Z
16
A+6.8V
8
Vss
7
A-6.8V
14
SR
X
15
SL
Y
4
SW
Z
16
A+6.8V
8
Vss
7
A-6.8V
470K
A+6.8V
6
5
4052_A 4052_B
4053_INT
5.1CH
R168 470K
22K
A
B
INT
5.1CH
N105B
4558
7
4.7u/16V
22K
22K
22K
1 2 3
4 5 6
4.7u/16V
7
8
4.7u/16V
9
4.7u/16V
10 11
4.7u/16V
12 13
4.7u/16V
14 15
4.7u/16V
16 17
18
822
19
15n
20
0.33u
21
A-6.8V A+6.8V
C131 47n
47u/16V
OUT4 OUT3 OUT2
OUT1 AVDD SWIN GNDS
SRIN SLIN GNDC CIN GNDR
RIN GNDL LIN BYPASR
BYPASL LTRE
LBASS3
LBASS2
LBASS1
-12V
AV320T SIGAL PR OCESSING(1)
R137
220/0.5W
VD101
6.8V C132 47n
M62446
+12V
DVDD
CLK
DATA
LATCH
DGND AGND
SWOUT
SROUT SLOUT
COUT ROUT LOUT
AVSS
RTRE
RBASS3
RBASS2
RBASS1
47u/16V
F
+12V-12V
N105A
2
3
4558
8 4
+12V
VD110
1N4148
VD111
1N4148
P_DISP
1
-12V +5VD
47n
CL1
4.7u/16V
CL2 CR1
4.7u/16V
CR2
42 41 40
39 38 37
C113 4.7u/16V
36
C114 4.7u/16V
35
C116 4.7u/16V
34
C118 4.7u/16V
33
C119 10u/16V
32
C121 10u/16V
31 30 29
28 27
26 25 24
23
22
C137 47n
822
15n
0.33u
47u/16V
L103 100uH
101
A-6.8V
47u/16V
E
CLK
CLK
DATA
LAT
SW-1
SR-1
SL-1
C-1
R-1
L-1
DATA
SW-1
LAT
SR-1 SL-1
D
C-1 R-1 L-1
R141 100
101
C
B
+12V
220/0.5W
XS6
-12V
VD102
6.8VC130
-12V
+12V
DGND DGND +12V
CON4
4 3 2 1
A
1 2 3 4 56
54321
6
F
R171 47K
SWM L1 R1 C1 SL1 SR1
LINE OUT
XC104
1
XS9
CON7
XS13
CON5
SW-OUT
2
1 2 3 4 5 6 7
From AMP Board
1 2 3 4 5
104
104
-12V-12V
R187
47K
P_RLY RLYC LRM SCM
C176 103
1
104
1000u/16V
+5VD
XS12
P_RLY
1
+5V
2
DGND
3
L-1
4
R-1
5
PH_SW
6
GND
E
D
C
B
A
CON8
SW-1
XP14
CON7
PH_SW
P_LRM
P_SCM
XS21
CON3
FAN
PH_SW
XS11
CON3
7
MIC
8
SW-1 C-1
C-1
L-1
L-1
R-1
R-1
SL-1
SL-1
SR-1
SR-1
OK
OK
KM
KM
PH_SW
7
KM
6
P_RLY
5
P_LRM
4
P_SCM
3 2 1
+5VD
PH_SW
P_LRM
P_SCM
1 2 3
FAN
PH_SW
R145 1
1 2 3
R146 1
4.7K
22u/16V
4.7K R144
4.7K
V101
2N5401
10K
VD103
1N4148 VD104
1N4148 VD105
1N4148 VD106
1N4148
10K
V104
9014
VD108 1N4004
VD109 1N4004
V102
S8050
LRM
LRM
SCM
SCM
VD107
1N4148
V103 9014
V105
S8050
104
R147 15K
R167
1/0.5W
104
4.7u/16V
4.7u/16V
R148 10K
R156 20K
R157 20K
R159 15K
R161 20K
R162 15K
R163 20K
R166 20K
6 5
2 3
6 5
C160 47P
2
3
6 5
2 3
C154 103
N106B
5532
C156 47P
R173 22K
-12V
N106A
5532
8 4
+12V
C158 47P
R175 33K
N107B
5532
R177 33K
-12V
N107A
5532
8 4
+12V
C162 47P
R179 22K
N108B
5532
C164 47P
R181 22K
-12V
N108A
5532
8 4
+12V
C155 10u/16V
7
1
C157 10u/16V
C159 10u/16V
7
C161 10u/16V
1
7
1
R172 1K
C1
L1
R1
R188 100
SL1
R189 100
SR1
AV320T SIGAL PR OCESSING(2)
3
P_RLY RLYC
LRM SCM
+12V +12V
47u/16V
47u/16V
N109 AMS1085-5
GND
Vin
Vout
2
F
E
D
C
B
A
1 2 3 4 56
54321
6
F
L/R
L/R
5.1CH(L/R/SL/SR/C/SW)
+5V
PH_SW PH_L
PH_R
4052_A /4052_B
2*COAXIAL/OPTICAL
4052*2
放大
放大
OK_CLK/OK_DATA
L/R
DO/CLK/DAT/CE
P_KT
检测
4558_B
4558_A
放大
LM4880
PT2315
P_RLY
DIGITAL AUDIO INPUT
COAXIAL/OPTICAL
TUNER
E
D
C
B
CD
DVD
5.1CH
1
L
2 3
R
1
L
2
3
R
9 8 7 6 5 4 3 2 1
MIC PHONE BOARD、
DECODER BOARD
DECODER IC,CPU
P_DISP
CPU
P_RLY
MIC_VOL
TONE
ECHO_VOL
ECHO
PT2399
CPU I/O :
VOL&TONE
M62446
0_LEVEL
CLK / DAT/ LAT
2*KEY
VFD
FAN
FUN VOLTUN_L/TUN_R
REMOTE
DCL/DDA/DST
PASS
INPUTSET
4053*2
DISPLAY BOARD
2*LED
PT6311
REMOTE
5.1CH 4053_INT
L/R/SL/SR/C/SW
STEREO INPUT
4558
CLK/DATA/LAT
OK_CLK/OK_DATA FAN DCL/DDA/DST P_LRM/P_SCM KM
DO/CE
REMOTE
P_RLY
P_KT
P_DISP
6311 I/O :
62446 I/O :
TUN_L/TUN_R
SL/SR
L/R
C
SW
KM
FAN
RLYC
4052_A /4052_B
5.1CH 4053_INT
P_LRM/P_SCM
AMPLIFIER BOARD
+12V
-12V
AGND
4558
5532
MUTE
L
R
R E I F
C
I L P
SL
M A
SR
SIGAL PROCESSING
POWER
Vs+ GND Vs-
4558
OK_L/R
OK_C
SW_OUT
SWM
Ower loading
Test
C/SR/SL AMPLIFIER
POWER
L
Y A L E
T C E T O R P
R
R
C
SL
SR
SW MUTE
+12V AGND
-12V
~VS
POWER
±6.8V
+5V
+6.8V AGND
-6.8V +5V~VS +5VD
Vc+
AGND
Vc-
DRIVE
RLYC
FR/FL AMPLIFIER POWER
POWER BOARD
F
E
D
C
B
A
1 2 3 4 56
A
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