Alto MP2D Service Manual

Service Manual

Model: MP2D

2 CHANNEL MIC PRE-AMPLIFIER

www.altoproaudio.com

Version: 1.1

CONTENT

1. Introduction…………………………………………………………………….1

2. Specification…………………………………………………………………...2

3. Block Diagram…………………………………………………………………3

4. Schematic Diagram…………………………………………………………...4

5. Wiring Diagram………………………………………………………………...9

6. PCB Layout……………………………………………………………………10

7. Exploded View & Mechanical Parts List…………………………….22

8. BOM......................................................………………………………….... 25

1. Introduction

- 1 -

˙ Each channel of the MP2D has 48V Phantom power available.
˙ A phase reverse switch is provided on each channel.
˙ A Rumble filter is provided on each channel for eliminating low frequency

noise.

˙ The MP2D offers a high quality transformer on each channel.
˙ Inserting stereo headphones into the jack on the front panel of the MP2D

enables the user to monitor the signals assigned to the Stereo bus.

˙ The MP2D has a stereo summing bus for combining the input signals

assigned to the bus using the L/R function switch on the front panel of the
MP2D.

˙ The output signal is available on the digital output in the AES/EBU format

and in the S/PDIF format (via the RCA connector) to the digital inputs.

2. Technical Specification

- 2 -

INPUT

Connectors

Type

Impedance

Max input level

CMRR

OUTPUT

Connectors

Connectors XLR and 1/4" TRS (Pin 2 and Tip hot)

Type

Impedance

Max output level

SYSTEM SPECIFICATIONS

Bandwidth

Frequency Response

Signa/Noise

THD

Crosstalk

Stereo Coupling

Digital

XLR and 1/4" TRS (Pin 2 and Tip hot)

Electronically balanced/unbalanced, RF filtered

Balanced >50Kohm, Unbalanced>25Kohm

>+24dBu balanced and unbalanced
Typically>60dB at 1KHz

Four balanced XLR

AES/ EBU, SPDIF
Electronically balanced/unbalanced, RF filtered

Balanced 120ohm, Unbalanced>60ohm

>+21dBu,+20dBm balanced and unbalanced

20HZ to 20kHz, +0/-0.5dB

10Hz to 200kHz,+0/-3dB

128dBu, weighted, 22Hz to 22kHz

<0.007% (no vintage)

0.5% (vintage max)

<-100dB, 22Hz to 22Khz

True RMS detection

Sampling Rates

Output

44.1k, 48k, 88.2k, 96k, 176.4k, 192k

24-bit

FUNCTION SWITCHES

48 Volt Phantom Power

Polarity Reverse

Rumble Filter

Main L/R bus selection

INDICATORS

INPUT LEVEL

Function switch

POWER SUPPLY

Mains Voltages

Fuse

Power consumption

Mains Connection

Each channel of the MP2D has 48V Phantom power available.

A phase reverse switch is provided on each channel

A Rumble fiter is provided on each channel for eliminating low frequency
noise

The MP2D has a stereo summing bus for combining the input signals assigned
to the bus using the L/R function switch on the front panel of the MP2D

12 element LED display: -30/-24/-16/-8/-4/-2/0/2/4/8/16/24 dB.

LED indicator for each

USA/Canada

U.K./Australia

Europe

General Export Model

100-120VAC : 400mA (SLOW-BLOW)

200-240VAC : 200mA (SLOW-BLOW)

20 Watts

Standard IEC receptacle

~120VAC, 60Hz

~240VAC, 50Hz

~230VAC, 50Hz

~100-120VAC,

~200-240VAC, 50-60Hz

PHYSICAL

Dimension

Net Weight

W(483.0)*D(198.0)*H(44.2) mm

3.3Kg

7654321

3. Block Diagram

- 3 -

8

MP2D BLOCK DIAGRAM

PHONES OUTPUT

D

CH1 INPUT

C

INSTRUMENT IN

CH2 INPUT

B

A

INSTRUMENT IN

CH1-48V

X1

X3
X2
1
2
3
4
5
6

CH1-IN-X3-1
CH1-IN-X2-1

+VCC

48V SW

GAI N

GAIN

MI C GAI N : 0~6 0dB

VINTAGE

VINTAGE

HI PASS SW

80Hz

HI PASS

INVERT

φ SW

INVER T
BUFFER

CH1 OUTPUT

2
3
1

LEVEL

MAS TER

LEFT

PAN

RIGHT

L/R SW

LEVEL

PHONES

INVE R T

INVE R T

3c
4d
2b
1a

5e

MIX OUT

RETURN

3c
4d
2b

INVERT
BUFFER

1a

5e

3c
4d
2b
1a

5e

SEND

CH2 OUTPUT

2
3
1

RETU RN

3c
4d
2b
1a

5e

3c
4d
2b
1a

5e

SEND

LEVEL

MAS TER

RIGHT

PAN

LEFT

L/R SW

INVE R T

INVE R T

BNC

RCA

CH2 SI NGAL M ET E R

RCA

CH1 SINGAL METER

DIG ITAL O U TPUT

1. 44.1 K

7. EX T

2. 48K

8. EX T

3. 88.2 K

2

4. 96K

3

5. 132.3K

1

6. 144K

MP2Di g i talOut

INVERT

DIG ITAL OU TPUT

1. 44.1 K

7. EX T

2. 48K

8. EX T

3. 88.2 K

4. 96K

5. 132.3K

6. 144K

MP2Di g i ta lOut

MIC

2
3
1

MIC

φ SW

2
22
33
3
11
1

EXT IN

CH2-48V

48V SW

X1

X3
X2
1
2
3

CH2-IN-X3- 1

4
5

CH2-IN-X2- 1

6

+VCC

2
22
33
3
11
1

GAIN

GAIN

MI C GAI N : 0~6 0dB

VINTAGE

VINTAGE

HI PASS SW

80Hz

HI PASS

BNC

EXT IN

1 2 3 4 5 6 78

2
3
1

1
3
2

LEFT OUT

RIGHT OUT

D

C

B

A

7654321

4. Schematic Diagram

- 4 -

8

D

INSTRUMENT IN

J1

PHONEJAC K

R119
10K

R120
10K

C

CN3

1
2
3
4
5
6
7
8

CN 2.0-8P-180

(F ROM IN/ O UT BORAD)

INSTRUMENT IN

B

J2

PHONEJACK

R125
10K

R148
10K

D1

1N 4148D21N 4148

C27

104P

R116

5.1M

3
33
22
2
11
1

RL1

RY12W-K

RYPWR

D3

1N 4148

TR13

BC337

C28
104P

RGND

CH1 +

CH1 -

CH2 +

CH2 -

R153

C145

100R

100uF/50V

C29

104P

R124

5.1M

3
33
22
2
11
1

RL2
RY12W-K

RYPWR

D4

1N 4148

TR7

BC337

C100
104P

RGND

CH1 -

CH1 +

12

+48V

CH2 -

CH2 +

R117

5.1M

345678

TR14
BC337

R4

5.1M

R118
1K

C103

33P

1N 4148

R6
1K

C104

33P

D5

R158
10K

3

2

1N 4148

47uF/25V

R121
22K

C150
100uF/50V

D6

5

6

R149
22K

+VCC-VC C

U1A

4580M

C51

R36

1K50

R159

100K

+VCC-VC C

C105

47uF /25V

R85

1K50

4580M

R53

6

5

MP2 - MAIN 0 1
MP2 - MAIN . S0 1

R108

51K

MIN→←MAX

R106

6

5

NJM4580M

R55

51K

MIN→←MAX

NJM4580M

10K

U9B

R107
22K

C30

472P

10K

7

U6B

R54
22K

C31

472P

7

0.22uF/50V

+VCC

1

-VC C

U1B

7

-VC C

C33

103P

R37

20K0

C34
102P

2K49

CH2-48V

C62

103P

R87

20K0

C63
102P

R86

2K49

R38
2K49

TR2

3906

R39
475R

TR3

2SA970

R68

1K50

R65

-VC C

C144
100uF/50V

+VCC

R88
2K49

TR8

3906

R89
475R

TR9

2SA970

R90

1K50

-VC C

C35
103P

475R

R152
100R

C64
103P

475R

+VCC

3906

+VCC

R43

2K49

R41

C36

2K49

1000uF/10V

TR4

R40

VR 1
02C 1 0K

R42
4R 70

TR5

2SA970

R70

C52

2K49

102P

-VC C

+48V

R160

10K

C66

1000uF/10V

+VCC

C151
100uF/50V

R95

2K49

+VCC

TR15
BC337

TR10
3906

R93
2K49

R91

VR 2
02C 1 0K

R94
4R 70

TR11

2SA970

R92

C65

2K49

102P

-VC C

R161
100K

+VCC

R44

2K49

D30

BAS316

-VC C

+VCC

D37

BAS316

-VC C

TR6

3906

R45

2K49

CH1-48V

R96

2K49

TR12
3906

R97

2K49

U5A

4580M

3

2

C37
22P

5

6

R73
5K11

U8A

4580M

3

2

C67
22P

5

6

R98
5K11

C39

22P

R47

5K11

1

R48
10K0

R46
5K11

U5B

4580 M

7

R49

10K0

C38
22P

RYPWR +VCC

C106

47uF /25V

C69
22P

R100

5K11

1

R101
10K0

R99
5K11

U8B

4580 M

7

R102

10K0

C68
22P

3

2

R122
680R

R123
0R

3

2

U6A

4580M

U9A

4580M

C41

47uF /25V

1

C40
22P

R50

5K11

PGNDRGND

C70
22P

R103

5K11

R51
20K

C71

47uF /25V

1

R104

20K

R105

VR 3
5C 50 0K

R52
10K

VR 4

5C 50 0K

10K

D38

1N 60

47uF /25V

C72

D31

1N 60

C42

47uF/25V

0.22uF/50V

R56

1K3

C58

0.22uF/50V
R77

62K

C73

R31
10K

R126
62K

R109

R110
10K

1K3

R30
10K

R57
10K

C43

2

3

D39

1N 60

0.22uF/50V

D32

1N 60

C74

C44

0.22uF/50V

R111
10K

2

3

D33

1N 60
R58
10K

U7A

4580M

C53

0.033u F/63V

D40

1N 60

C75

0.22uF /50V

4580 M

C32

0.033u F/63V

R59

6K8

47uF /25V

1

R112
10K

R113

U10A

R60
10K

C45

D41

1N 60

6K8

1

D34

1N 60

R78

C76

47uF /25V

D35

1N 60

R61

R62

10K

10K

HI-PASS

1

2

3

SW 1 A

PBA/6PC

CH1-48V

-V- LED
LGND

R127

D42

1N 60

HI-PASS

1

3

SW 2 A

PBA/6PC

20K

+V-LED

SW1

CH2-48V

-V- LED
LGND

+V-LED

-V- LED

(TO CH2 DISPLAY BOARD)

D43

1N 60

R115
10K

20K

R114
10K

MP2-MAIN (1/2)

D36

1N 60

CH1-INS

C46

R128

47uF /25V

CN7

1
2
3
4
5
6
7

+48V

SW

(TO CH1 DISPLAY BOARD)

+48V

SW1

8
9
10

10P-2.0
CN8

1
2
3
4
5
6
7
8
9
10

10P-2 .0

C77

2

47uF /25V

27K

MAIN-OUT-R

MAIN-OUT-L

CH2-INS

R129

27K

CH1-D-O UT

CH1-RTN

CH2-RTN

CH2-D-OUT

CH1-D-O UT
CH2-D-O UT

(TO IN/OU T B OR AD)

+VCC

-VC C

CN4

1
2

CN 2.5-2P-1 80

( TO Digi ta l Out Board )

CN6

1
2
3
4
5
6
7
8
9
10
11
12

CN 2.0-12 P- 180

D

C

B

A

1 2 3 4 5 6 78

+VCC

-VC C

C101
104P

C6
104P

U1C

4580M

C88

84

104P

C89
104P

4580 M

84

U5C

C90
104P

C91
104P

4580 M

84

U6C

C92
104P

C93
104P

4580M

84

U7C

C94
104P

C95
104P

4580 M

84

U8C

C96
104P

C97
104P

4580M

84

U9C

C98
104P

C99
104P

4580M

U10C

84

A

MP2-MAIN (2/2)

- 5 -

- 5 -

D

(FROM CN6 )

CH1-RTN

C134

47uF /25V

R22

3

2K2

R142

10K

2

VR 7A
10KD

1

7654321

22P

C21

15K

+VCC

-VC C

U11C

4580M

84

C130
100N

C136
100N

U12C

4580M

84

C1 48 22P

C135

22P

R134

36K

6

5

U7B

4580M

47uF /25V

7

C137

R154

5K1

R155

5K1

2

3

U18A

4580 M

C131

84

100N

U14C

4580M

C138
100N

1

R135
4K7

R144
4K7

VR 5
B1 0K

C25
100N

C26
100N

2

SW -PBA/12P C

5

SW -PBA/12P C

84

U18C

4580M

CH1 L/ R SW

SW 3 A

1

R24

5K1

3

SW 3 B

4

R25

5K1

6

C146
100N

C147
100N

C132
47uF /25V

C143

47uF /25V

R28

U14A

2

3

1

4580M

47uF /25V

22P

C22

R29

15K

6

U14B

5

4580M

VR 8A

C23

7

C24

R132
3K

10KD

MAIN-OUT-L

VR 8B

47uF /25V

R138

10KD

MAIN-OUT-R

C133

R136

U11A

2

3

4580U

(T O CN 6 )

C139

R137

2

3K

3

22P

8.2K

1

22P

8.2K

U12A

4580U

(T O CN 6 )

6

5

6

1

5

U11B
4580U

7

U12B
4580U

R133
120R

R139
120R

R140
120R

R141

7

120R

+VCC

8

PHONES

2
22
33

3
11

1

J3
CN-MIC - 6 .3 Y3

D

C

(FROM CN6 )

B

A

CH2-RTN

CN1

5
4
3
2
1

CN 3.9-5P-1 80

POWE R
SUPPLY
CONNECTO R

47uF /25V

C1
100N

C140

6

4

R23
2K2

5

VR 7B
10KD

2A W2-08

C149

22P

C141

R146

22P

R143
36K

10K

U10B

6

5

47uF /25V

7

C142

R156

5K1

4580M

D10
2A W2-08

+V

C3
100N

-V

D9

C2
2200uF/25V

R1
0R 0

C7
2200uF/25V

C102

PGND

100uF/100V

R157

5K1

6

5

U18B

4580 M

U15
LM 317 T

7

R2
220R

R10

R9

2K7

180K

R7
220R1/2W

R8

R145

4K7

VR 6
B1 0K

R147

4K7

+VCC+V

C8
10uF /50V

U4
LM 317 T

220R1/2W

C11
100N

PGND

C12

100uF/100V

C13
100N

D11
2A W2-08

DGND

C20
1000uF/35V

VCC1

C14
220uF/100V

PGND

C15
100N

R16
0R 0

PGND LGND

R151
0R 0

GND DGND

R17
220R

C16

47u/10 0V

R18
8K2

C4
100N

D12
RLS4148

R19
220R

CH2 L/R SW

SW 4 A

SW 4 B

U16
LM 337 T

C17
47u/63 V

1

3

4

6

2

SW -PBA/12P C

5

SW -PBA/12P C

R26

5K1

R27

R11
2K7

5K1

R3
220R

R12

470R 1/4W

C18
100N

PBA /6PC

-VC C-V

U17
LM 317 T

+5VVCC1

PBA/6PC

R5
220R

R15
680R

R13
0R 0

R14
0R 0

CN2

1
2

2P-2.5

+V-LED

-V- LED

C10
1000uF/16V

+VCC

R150
1K

[TO PW R LED]

CN5

1
2

2P-2 .5

SW -PB A/12P C

SW -PB A/12P C

SW 4C

+48V

C9
10uF /50V

C19
470uF/50V

C5
100N

DGND

+VCC

-VC C

+5V

DGND

[ T O DIGI-OUT BOARD ]

SW 1 B

SW 2B

SW 3C

5

(C H 1 H I- PASS led)

5

(C H 2 H I- PASS led)

8

(CH1 L/R SW l ed)

8

(CH2 L/R SW l ed)

R20

390E 1/4W

TR1

BC 327

4

6

4

6

7

9

7

9

D8
RLS4148

D7
RLS4148

R21
10K

LD 1
YL

LD 2
YL

LD 3
YL

LD 4

YL

SW

C

B

A

1 2 3 4 5 6 78

7654321

- 6 -

8

D46
1N 4148

C5

47uF /63V

C6

D44
1N 4148

D50
1N 4148

C7

47uF /63V

C8

47uF /63V

D48
1N 4148

C29

104P

C30

104P

+VCC-VC C

D47
1N 4148

CH1 +

CH1 -

CH1-SEND

R13
120R

R14
120R

3c
4d
2b

1a

5e

3c
4d
2b

1a

5e

J7

CH1 SEND

JY63 51 G -02

J8

CH1 RETURN

JY63 51 G -02

CN1

1
2
3
4
5
6
7
8

CN 2.0-8P-1 80

(T O MAIN BOARD)

CH2-SEND

R15
120R

R16
120R

3c
4d
2b

1a

5e

3c
4d
2b

1a

5e

J9

CH2 SEND

JY63 51 G -02

J10

CH2 RETURN

1

2

D45
1N 4148

D51

K

A

1N 4148

CH2 +

CH2 -

CH1 +

CH1 -

CH2 +

+VCC-VCC

CH2 -

CH1-48V
CH2-48V

JY6351G-0 2

10P

D49
1N 4148

+VCC-VC C

C18

47u/25 V

C17

47u/25 V

C13

R21

10K

R31

10K

R22
10K

2

3

4580M

R51
100R

1

U1A

R35

C14 10P

10K

R33

R30

10K

R32

10K

R29

10K

R40

10K

10K

6

5

4580M

R52

7

100R

U1B

R38

C22

10P

C15

10K

470P

C21

470P

R34
10K

2

3

4580M

R53

100R

1

U2A

R43

10K

MP2-IN/OUT (1/1)

2
3
1

2
3
1

X5

JY-503 0-03 0G

X6

JY-503 0-03 0G

22P

C9

R20

R17

10K

R18

10K

R23

10K

R24
10K

10K

2

3

R19
10K

6

5

R25
10K

1

U3A

4580M

22P

C10

R26
10K

7

U3B

4580M

MAI N LEF T OUTPUT

MAIN RIGHT OUTPUT

R47
120R

R48
120R

R49
120R

CH1 OUTP UT

2
3
1

JY-503 0-03 0G

2
3
1

R50
120R

CH1-RTN

X3

CH2-RTN

CH2 OUTP UT

X4

JY-503 0-03 0G

D

C

B

C16 10P

R42

R39

10K

R41

10K

10K

6

5

4580M

R54
100R

7

A

U2B

R46

10K

C24

C23

470P

470P

CH1-48V

CH1 INTPUT

J1

X1

D

X3
X2
1
2
3
4
5
6

C1 47uF /25V
C2 47uF /25V

R1

R2

R9

R10

6K81

6K81

47R 0

C33

220P

47R 0

5K62

R5
R6

5K62

47uF /63V

MIC GAIN=-60~0dB
LINE IN GAIN=-40~+20dB

CH2 INTPUT

J2

X1

X3
X2
1
2

C

MIC GAIN=-60~0dB
LINE IN GAIN=-40~+20dB

3
4
5
6

C3 47uF /25V
C4 47uF /25V

CN2

1
2
3
4
5

CN2.0-10 P-180

84

U1C

6
7
8
9

10

C25
104P

C26
104P

B

(T O MAIN BOARD)

+VCC

A

4580M

-VC C

U2C

4580M

R4

+VCC

-VC C

84

R3

47R 0

47R 0

R7
R8

R11
6K81

C34
220P

5K62
5K62

CH1-SEND

CH1-RTN

CH2-SEND

CH2-RTN

C27
104P

C28
104P

CH2-48V

84

U3C

4580M

R12

6K81

1 2 3 4 5 6 78

-V-LED-d

- 7 -

321

4

R10
82K

D

R5

10K

R11

5K1

R12

+V- LED-d

8

C2
100N

5K1

R13

U1C

3K9

4580M

C

LGND-d

-V-LED-d

4

C3
100N

R14

2K

R1

36K

R2

R15

2K

100K

D2

2

3

RLS4148

U1A

LGND-d

B

R3

4580M

D1

RLS4148

100K

R4

10K

1

47u/25V

LGND-d

C1

R7

5K1

C5 22P

R6

5K1

6

5

U1B

4580M

5

SW 1B
PBA/6PC

φ SW

SW 2B

4

7

6

5

(CH 48V led)

SW 2A

2

PBA/6PC

(CH INVERT led )

PBA/6PC

SW

SW1

LD13

4

R18

1K

6

YL

1

3

LD14

R19

1K

YL

R16

2K

CN1

1

2

3

-V-LED-d

PHANTOM SW

2

SW 1A

1

3

+48V-d

U2E
LM339

3

PBA/6PC

A

12

U3E

LM339

3

12

U4E
LM339

3

12

C4

100N

R8

+V- LED-d

22R 1/4W

R9

-V- LED-d

22R 1/4W

LGND-d

+V-LED-d

+48V-d

SW

SW1

(TO MAIN B O A RD)

4

5

6

7

8

9

10

1 0 P -2 .0-9 0

R17

2K

R20

1K

R21
1K

LGND-d

U4C
LM339

9

8

14

U4D

LM339

11

10

13

U4A
LM339

5

4

U4B
LM339

7

6

U3C
LM339

9

8

14

U3D

LM339

11

10

13

U3A

LM339

5

4

U3B
LM339

7

6

U2C
LM339

9

8

14

U2D
LM339

11

10

13

U2A

LM339

5

4

U2B
LM339

7

6

LD12
RED

LD11

MP2-DISPLAY (1/1)

D

YL

LD10
YL

2

LD9
GR

1

LD8
GR

C

LD7
GR

LD6
GR

2

LD5
GR

1

LD4
GR

Q1

BC557B

+V-LED-d

R22

100R 1/4W

B

LD3
GR

Q2

BC557B

LD2
GR

2

R23
47K

LD1
GR

1

A

1 2 34

- 8 -

D

WCLK_IN

GND

C

B

A

VDD

C10

C7

2u2F

100N

DLM21A102SPT

P1

BNC

GND

L1

R21

100K

GND

11

10

GND

1

2

9

8

8

7

GND

U5A

74HC393

U5B

74HC393

C

6

U1B
CS5361

18

C20

100N

CLK

MR

Q0

Q1

Q2

Q3

T1

8

4

2

C

1

SW- RDI P 4

321

R1

VCC

24

19

C8

100N

OUT

GND

C12

2u2F

D1

4148

GND

U10
LM1117-3.3

1

2

3

4

5

6

7

8

9

10

C9

100N

GND

C11

23

AGND

2u2F

R23

100R

R22

1M

GND

3

Q0

4

Q1

5

Q2

6

Q3

CLK

13

12

MR

+3.3V

GND

4

3

2

1

R2
100R

1 2 34

R16

100R

VDD

1

2

3

4

5

6

7

8

9

10

11

12

2u2F

G

U7

P0.0

P1.7

P1.6

P1.5/RST

Vss

P3.1/X1

P3.0/X2

P1.4/INT1

P1.3/SDA

P1.2/SCL/T0

P89LPC921

VDD

GND

U3

AL1402

IN

C3

C1

100N

74HC153

GND

MODE0

FMT0

FMT1

MODE1

OPDI GIN

SVCO

WDCLK

BCLK

OUT12

OUT34

OUT56

VDD

GND

P0.1/KB1

P0.2/KB2

P0.3/KB3

P0.5/KB5

P0.6/KB6

P0.7/KB7

16

U4B

8

GND

OPDIGTHRU

L4

DLM21A102SP T

C34

100P

L5

DLM21A102SP T

P0.4KB4

VDD

P1.0/TX

P1.1/RX

U6G
74HC04

GND

VDD

LINMODE

MUT E

ERROR

HOLDEER

DVCO

USER3

USER2

USER1

USER0

OUT78

C35

100P

20

19

18

17

16

15

14

13

12

11

14

7

C2

100N

AGND

+3.3V

VCC

VDD

GND

24

23

22

21

20

19

18

17

16

15

14

13

C19

2u2F

GND

U8C

4580M

AGND

VDD

GND

TX
RX
RESE T

C25

8

100N

4

EXT_CLK

C31
100N

+3.3V

GND

SEL _MD I V

RST

CDT O

CCLK
CDT I
CSN

SEL _M0
SEL _M1

SEL_MCLK
SEL_SYNC

CN2

5

4

3

2

1

HEADER 5

VCC

AGND

C4
100N

RST

SYSCL K
BCLK

LRCLK

SDOUT0

SEL _MDI V

SEL _M0
SEL _M1

RST

SYSCL K
SDOUT0
BCLK
LRCLK

CSN
CDT I
CCLK
CDT O

EXT_CLK

SEL_SYNC

SEL _MCL K

LRCLK

TP1

SYSCL K

8

U9C

MC4580

4

AGND

VDD

GND

AGND

VCC

1

5

4

3

9

10

14

13

11

2

12

15

GND

100N

C24

U1A

RST

MCLK

SCLK

LRCK

SDOUT

MDI V

M1

M0

HPF

M/S

I2S/LJ

OVFL

CS5361

1

2

3

4

5

6

7

8

9

10

11

12

GND

U2

V1

TRANS

PDN

MCLK

SDT I

BI CK

LRCK

FS0/ CSN

FS1/ CDTI

FS2/ CCLK

FS3/ SDTO

C1

AK4103A

GND

C33
56P

AINL-

AINL+

AINR+

AINR-

1

2

3

4

5

6

7

14

U5C

74HC393

7

GND

VO

U4A

1E

S1

1I3

1I2

1I1

1I0

1Y

74HC153

R36 100R

17

16

22

21

20

2E

2I3

2I2

2I1

2I0

2Y

VDD

GND

S0

U1

DIF2

DIF1

DIF0

TXP

TXN

VSS

VDD

CKS1

CKS0

BLS

ANS

100N

C6

C14
10N

C15
10N

15

14

13

12

11

10

9

100R

R35

100R

R6

100R

R3

100R

R10 5K1

C22 22P

R4 5K 1

1

U9A
4580M

U8B
4580M

7

R8 5K 1

C27 22P

R12 5K1

R27

24

23

22

21

20

19

18

17

16

15

14

13

VDD

GND

C5

2u2F

GND

GND

330R

R14 56 R

U6C
74HC04

6

R20 10 M

22.5792MHz
X2

C21
18P

GND

C29

2

10uF

3

5

C30

6

10uF

R26
100R

GND

C23
18P

C26 22P

R5 5K 1

7

U9B
4580M

U8A
4580M

1

R7 5K 1

C28 22P

C17

100N

TF1

LT-0806M

C32

100N

TF2

LT-0806M

5

GND

4

C13
2u2F

DLM21A102SPT

3

1

4

2

3

1

4

2

U6D

74HC04

8

R13 10M

24.576MHz
X1

C16
18P

GND

R9
10K

6

5

AGND

3

2

R11
10K

L3

CN-BAL-MALE-2

GND

2

3

1

GND

C18
18P

GND

D

VDD

CN1

1

2

3

4

HEADER 6

C

P2
BNC

XLR1

L2

DLM21A102SPT

B

9

A

321

5. Wiring Diagram

- 9 -

4

D

CN2

MP2INOUT

CN1

P2

M P2DIGOU T

CN1

紅
白
黑
紅

藍

紅

C

黑

白

黑

白

藍

黃

PT -MP8D

GND

PGND

紅黑

CN1

CN2

MP2MAIN

B

CN3

CN7

CN8

CN6

FUS E

CN4

CN5

白紅

黑紅

D

C

B

AC Socket

A

CN1

MP2DIS P

1 2 34

CN1

MP2DISP

POWER LED

紅

黑

GR

A

PO WER SW