Alto MAXI Q PC Service Manual

MODEL: MAXI-Q PC

www.altoproaudio.com

Version 1.0

CONTENT

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

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

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

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

5. Wiring Diagram………………………………………………………………...7

6. PCB Layout……………………………………………………………………..8

7. Exploded View & Mechanical Parts List…………………………….20

8. BOM…………………………………...........................................................28

1. Introduction

Single rack unit.

2 COMBO input connectors are compatible with balanced XLR and JACK.

2 outputs with balanced XLR connector.

A/D and D/A converters for a 117dB dynamic range.

Delay lines up to 2715ms for each channel.

10 Factory presets and 128 user presets by large memory capacity.

Switching power supply.

5 Parameter EQ, 30 Graphic EQ output phase control.

RS485 interference for user connect several MAXI-Q PC sets to computer

in seria.

Remote control

- 1 -

2. Technical Specification

INPUT section

Output Section Connectors

DSP Section A/D converters

Features

General Performance

General

Connectors

Nominal input sensitivity Input Impedance

Maximum Input Level Input Gain -30 / +6 dB variable in 0.5 dB steps

Output Impedance Nominal Output Level Maximum Out put Level Output Gain

D/A converters Internal dynamics Sampling frequency

Delay Step Max Delay time

EQ Gain

EQ Bandwidth PEQ freq GEQ freq

Memories

Communications Frequency Response

Dynamic range

Channel Separation Distortion (THD)

Input Meter

Output Metering

Dimensions Weight Power supply

2 x COMBO

0 dB (0.775 V) 30kOhm, electronically balanced

+20dBu

2 x XLR-M 600 Ohms, electronically balanced

0 dBu +20 dBu

-30 / +6 dB variable in 0.5 dB steps

24 bit 24 bit

40 bit 48 kHz

21 microseconds minimum 2715ms +/15dB, variable in 0.5dB steps

0.05 to 3.00 octaves, variable in 0.05 steps

15.6 Hz to 16 kHz

25 Hz to 20 kHz

FACTORY PRESETS are 10 + 128 USER PRESETS 9-pin RS232, XLR-F RS485 IN, XLR-M RS485 OUT

20Hz - 20kHz, 0.25dB >117dB 20Hz to 20kHz

>100dB 20Hz to 20kHz

0.05%, 20Hz to 20kHz

-24dB, -18dB, -12dB, -6dB, CLIP relative to Clip point (+20dBu)

483 44 300

4.0 Kg see label on the unit

mm

- 2 -

3. Block Diagram

D

6

C

B

A

Left O utput

54321

Dac OUT1

Right Outp ut

OUT1

Dac

GEQ P EQ

MAXI-Q PC BLOCK DIAGRAM

InputGain Delay 30 Band 5 Band Input Gain OutputGain Mute Meter

IN1

Left O utput

D

C

InputGain Delay 30 Band 5 Band Input Gain OutputGain Mute Meter

IN1

Right Outp ut

1 2 3 4 56

B

A

- 3 -

4. Schematic Diagram

D

4

+5V

C

DISP2

LED-7SEG-2

Q2

BC560

R2

10K

R4

4K7

8

3

dp

5

g

A2

A1

10

f

9

e

1

d

2

c

4

b

6

a

7

B

A

321

+5V

C2

100N

+5V

C1

CN1

1

10u/16V

2

CON2

CN3

1K2

R19

1

Q1

BC560

R1

10K

R3

4K7

R8

10K

R7

10K

R6

10K

R5

10K

2

CON2

R10

R9

SW4

SW3

SW2

SW1

8

3

470R

CN2

DISP1

LED-7SEG-2

A2

A1

LED1

PRESET

1

LED2

2

dp

5

g

10

f

9

e

1

d

2

c

4

b

6

a

7

ID

3

470R

R11

R12

R13

R14

R15

R16

R17

R18

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

CN2*10

1 2 34

D

C

B

A

- 4 -

D

84

IC4C

+12V

10U

100N

10U

100N

100R

A_A16

NC32NC

DCAS

AA17

TP13

135

A_WEB

A_A17

165

AA17

5 6

+12V

16

29

DOE

AA18

TP12

1

136

166

AA18

7 8

C70

100N

C8

10U

+5VA

HM5118160ALJ-70

EN29F040

+5VD

R89

140

139

A_DE

A_LCAS_W0

A_A18

A_A19

167

168

TP34

AR6 4K7*4

1 2

84

IC1C

MC33078

84

IC2C

MC33078

84

IC3C

MC33078

262821

23

322

(DRAM 1M*16)

DRAS

DCAS

DOE

R86 100R

R87 100R

31

34

32

D_OE

D_CA5

80

D0 LCD

D1 LCD

84

IC19B

24LC256-I/SN

3216

+5VD

R95

4K7

R96

4K7

100R

R92

TP33

125

132

133

A_CS0

A_CS1

A_CS2

A_UCAS_W1

A_A20

A_A21

A_A22

A_A23

169

170

171

AR5 4K7*4

3 4

5 6

7 8

DGND

IC9C

DWR

33

D_WR

7

IC19A

100R

134

103

A_CS3

P23/ALE96P00/D2867P01/D2968P02/D3069P03/D31

C69

100N

C7

10U

AK5383VS

R85 100R

R88 100R

RED208

MODE

SDL5SCL6E01E12E2

PWM LCD

97

104

P30/A30

P31/A31

P24/ACK

R73

4K7

DGND

-12V

C39

100N

C40

10U

C61

10U

27

DGND

2 1

C60

10U

C38

10U

C37

100N

C74

100N

C73

10U

3

126

INT0

70

MUTE

84

C84

100U

C83

100N

TP32

C91

100N

DGND

24LC256-I/SN

DGND DGND

INTER2

127

128

129

INT1

INT2

INT3

MC33078

IC5C

MC33078

IC6C

MC33078

IC7C

MC33078

IC8C

MC33078

R64

10K0

C36

22P

R66

4K70

C34

R24

3K90

R58

2K20

R60

2K20

C55

10U

22

AOUTL-

MCLK3PDN4BICK5SDATA6LRCK7SMUTE8DFS9DEM010DEM111DIF012DIF113DIF214CKS026CKS127CKS228P/S

IC12A

RST

IC17B

EN29F040

RED208

12345

6

CN2

6P-2.5

8

7654321

+5VD

21

C79

10U

C80

100N

+5VD

C71

10U

C72

100N

-12V

+12V

+5VA

DGND

IC12B

AK4393VF

8 7

IC9B

AK5383VS

DD0

DD1

DD2

DD02DD13DD24DD35DD47DD58DD69DD7

A017A118A219A320A423A524A625A726A8

IC13A

DA0

DA1

DA2

DA0

DA1

DA2

DA3

AR10

100R*4

1 2

3 4

5 6

7 8

D_A035D_A136D_A239D_A340D_A441D_A542D_A643D_A744D_A845D_A9

D_D0

D_D1

D_D2

IC18B

201

202

203

204

1 2

3 4

5 6

7 8

DD0

DD1

DD2

DD3

AR4

100R*4

AA3

AA2

AA1

AA0

TP27

TP28

TP29

TP30

12

A0

A111A210A39A48A57A66A75A827A9

D013D114D215D317D418D519D620D7

IC17A

TP1

TP2

TP3

TP4

D0D1D2D3D4D5D6

105

106

109

110

A_D0

A_D1

A_D2

A_A0

A_A1

A_A2

IC18A

182

181

179

180

AA0

AA1

AA2

AA3

2415

DGND

1716

IC12C

AK4393VF

+5VA

DD3

DD4

DD5

DD6

DD7

DD8

DD9

DD10

DD11

DD12

10

34

DD833DD9

DD1035DD1136DD1238DD1339DD1440DD15

A928NC11NC12NC15WR13RAS14OCAS30CCAS31OE

27

DA3

DA4

DA5

DA6

DA7

DA8

DA9

DA4

DA5

DA6

DA7

DA8

DA9

AR9

100R*4

R93

100R

R94

1 2

3 4

5 6

7 8

46

D_A1049D_A1150D_A1251D_A1352D_A1453D_A1554D_A1655D_A1756D_A1857D_A1958D_CS030D_CS1

D_D3

D_D4

D_D5

D_D6

D_D71D_D82D_D93D_D104D_D115D_D126D_D137D_D148D_D1511P04/D2671P05/D2772P06/D2873P07/D2974P08/D3075P09/D31

205

206

207

1 2

3 4

5 6

7 8

1 2

3 4

5 6

7 8

1 2

3 4

DD4

DD5

DD6

DD7

DD8

DD9

DD10

DD11

DD12

DD13

AR3

AR1

100R*4

AA13

AA12

AA11

AA10

AA9

AA8

AA7

AA6

AA5

AA4

TP26

TP5

TP25

TP6

TP23

TP24

21

TP7

TP8

TP19

TP20

TP21

TP22

26

A1023A1125A124A1328A1429A153A162A1730A18

WE31OE24CE

TP9

TP17

TP18

TP10

D7

R91

D7

+5VD

117

118

121

111

A_D3

A_A3

178

AA4

+5VD

122

112

113

114

115

116

A_D4

A_D5

A_D6

A_D7

A_D8

A_D9

A_D10

A_D11

A_D12

A_A4

A_A5

A_A6

A_A7

A_A8

A_A9

A_A10

A_A11

A_A12

160

159

158

151

152

153

154

155

156

AA5

AA6

AA7

AA8

AA9

AA10

AA11

AA12

AA13

AA10

AA11

AA12

AA13

R76

10K

AR7

4K7*4

1 2

3 4

5 6

7 8

+5VD

C67

C53

DGND

19 18

C68

C56

DD13

DD14

DD15

41

DWR

DRAS

100R

5 6

7 8

DD14

DD15

AR2

100R*4

AA16

AA15

AA14

TP14

TP15

TP16

22

TP11

10K

R90

123

124

A_D13

A_D14

A_D15

A_A13

A_A14

A_A15

162

163

164

AA14

AA15

AA16

AA15

AA16

AA14

1 2

3 4

C

-12V

1 2

3 4

5 6

7 8

9 10

11 12

13 14

CN1

R5

10K

DGND

C5

10U

7

IC8B

MC33078

5

6

R62

DGND

R61

10K0

1

680P

IC8A

MC33078

3

2

R59

2K20

C35

C33

2N2

R55

R57

2K20

C54

10U

23

AOUTL+

+5VD

C6

10U

1

R25

10K0

C19

22P

3

DGND

DGND DGND

2

DGND

R23

4K70

R27

10K0

7

C20

680P

R29

3K90

5

6

R30

2K20

R28

2K20

C21

2N2

R67

2K20

R63

2K20

C57

10U

C58

10U

20

21

AOUTR-

AOUTR+

AK4393VF

25

DGND

82K0

680P

3K90

DATA OUT1

DATA OUT2

DATA OUT3

BCLK

(3.072MHZ)

AR8

100R*4

1 2

3 4

5 6

7 8

20

21

17

DAC012DAC113DAC214DAC315DAC416DAC5

CK256FS

P12/BIR083P13/BIR184P14/BIR285P15/BIR386P16/BIR487P17/BIR588P18/BIR689P19/BIR790P20/BIR891MD0_O64MD0_I59MD1_O65MD1_I60MD2_O66MD2_I61P25/SDI98P26/SDO99P27/SCK

IC18C

E LCD

D4 LCD

D5 LCD

D6 LCD

D7 LCD

RS LCD

R/W LCD

IC16D

IC16C

IC16E

IC16F

74HC04

89

1011

1213

5 6

DGND

312Re

Di

Ro

De

6

1234567

CN3

TRANSCEIVER

7 4

RXP

RXN

IC21A

A28b-14B

DGND DGND

R6

10K

DGND

IC4A

MC33078

R26

82K0

DGND

IC4B

MC33078

C22

680P

DGND DGND

R65

3K90

DATA OUT2

(48KHZ)

DIGIT IN

LRCK

D2 LCD

D3 LCD

+5VD

81

P11/CK3282P10/CK32

196

197

198

ADC0

ADC1

SD IN

PWM LCD

12

AR14A 470R78AR11D 470R34AR11B 470R

CN5

470R

R104

SD IN

ADC2

SD OUT

AR11C 470R

194

195

186

187

188

189

190

191

192

M4_LA

M4_WS

P21/AD094P22/AD195ADCIN

1011

33K

STB SWT

5 6

7 8

STB LED

MOD0

149

D0 LCD

AR12A 470R

1 2

9 10

D1 LCD

MOD1

MOD2

MOD3

MOD4

TESTE

REFCLK

183

177

DGND

1213

33K

R102

D2 LCD

D4 LCD

78

AR12C 470R

AR13D 470R34AR13B 470R78AR14D 470R34AR14B 470R

5 6

11 12

13 14

15 16

17 18

78

AR12D 470R34AR12B 470R

AR13C 470R

5 6

D3 LCD

D5 LCD

MOD5

REFOUT

173

R79

IC22F

19 20

AR13A 470R

193

MOD6

MOD7

RST29XTIN24XTOUT

150R

IC16A 74HC04D

74HC14

C115

100N

C116

100N

D6 LCD

A28b-20B

AR14C 470R

1 2

D7 LCD

3 4

1 2

5 6

199

ADC3

100

SD CLK1 2

IC22E

74HC14

R101

SD OUT

3 4

AR11A 470R

1 2

5 6

SD CLK

19

18

176

BB_LE22BB_LA

CK64FS

FSYNC_I

FSYNC_O

MAX485EESA

MUTE

8

A28b-8B

B

DATA OUT3

RST

SYSCLK

12.288MHZ

+5VD

STB LED

STB SWT

101

102

P28/STB0

P29/STB1

RED208

25

+5VD

R82

150R

R77

IC16B

74HC04D

R81

220R

R80

47K

XT1

24.576MHZ

DGND DGND

E LCDR/W LCD

RS LCD

DGND

8

RST

Q9Q

SD10CD

IC15B

12

74HC74D

R78

220R

Q5Q

IC15A

74HC74D

SD4CD

CLK3D

2

100R

15P

C96

15P

C94

DGND DGND

IC22D

74HC14DT

IC22C

74HC14DT

D9

RLS4148

R98

330R

+5VD

IC20

MAX709L-CSA

LRCK

13

CLK11D

DGND

6

1

R100

100R

89

5 6

R97

100K

IC22B

3 4

IC22A

1 2

R99

2

7

8

3

NC

RST

VCC

GND

NC

NC4NC5NC

1

6

DGND+5VD

C101

100N

C110

100N

C92

100N

C89

100N

C93

100N

C103

100N

DGND

1U

C107

100N

C112

C108

100N

C111

100N

C109

100N

C106

100N

74HC14DT

C102

100N

C97

100N

74HC14DT

10K

IC18D

MMS-REDLG

DGND DGND DGND

DIGIT IN

184185

200208

172174

157161

137138

IC18E

119120

MMS-REDLG

107108

9293

7879

6263

4748

3738

2326

910

C100

C98

147148

175

27 28

76 77

130 131

10U

100N

COLLEGARE TRA

DGND

A

3

2

IC1A

MC33078

1

5

6

7

IC1B

C9

C10

10U

R31

22R

R32

C59

10N

4

5

AINL-

AINL+

RST10MCLK17SCLK14LRCK13SDATA15FSYNC16SMODE112SMODE211DFS18HPFE19TEST20ZCAL6CAL

IC9A

SYSCLK

RST

BCLK

LRCK

+5VD

PIN 147 E 148

141142

C105

143145

144

146

+5VD +5VD

C99

2

1

MC33078

10U

C23

10U

22R

R68

22R

24

+5VD

147

IC22G

147

IC16G

147

IC15C

85

IC21B

2142

6

IC13B

1

IC18G

RED208

C104

100N

10U

R83

100R

R84

100R

IC18F

RED208

100N

3

AINR-

74HC14

74HC04

74HC74

MAX485EESA

HM5118160

150

IC5A

MC33078

5

6

IC5B

7

MC33078

10U

C24

R69

22R

C62

10N

25

AINR+

AK5383VS

9

DGND

C113

100N

C95

100N

C88

100N

C114

100N

C85

100N

37

22

10U

C81

C82

100N

DGND

DGND DGND DGND DGND DGND DGND DGND

1 2 3 4 5 6 78

D

C

B

A

- 5 -