Alto X23 Manuale utente

ServiceManual

www.altoproaudio.com

Version: 1.1

Model: X23 (2-WAY STEREO 3-WAY MONO)

ACTIVE CROSSOVER

CONTENTS

1. Specification

2. Block Diagram

3. Schematic Diagram

4. Printed Circuit Board

5. Wiring Diagram

6. Test Procedure

7. Electrical Parts List

8. Exploded Views & Mechanical Parts List

9. Notes

LOW-MID Frequency Range

MID-HIGH Frequency Range

HUM & Noise

LOW Section (Output@0dB)

HIGH Section(Output @0dB)

S/N Ratio

Input Level

Output Level

CD Boost

Mute

Phase

Controls

Range 1 80Hz - 1KHz

Range 10 800Hz - 10KHz

AV=0dB, fc=800Hz

-106dBu

-97dBu

118dB

continuously variable

low, high continuously variable

rear panel switch

low, high front panel switches

rear panel switch

Physical

Dimensions

Weight

483(W) 194.5(D) 44(H)mm (19" 7.7" 1.7")

3.1Kg(6.84lb)

Electrical

Power Supply

Connector type

Type

Mains supply

Power Rating

3-pole IEC , grounded

Servo controlled , stabilized

8.5W

95-120V /210-240V ,60-50Hz

1. SPECIFICATION (X23)

1 2 3 4

4321

ATitle

Number RevisionSize

Date: 29-Oct-2002 Sheet of

File: D:\pc42\pc42\ALTO\ \X23\X23.ddb服務手冊 Drawn By:

100mA

FUSE

5 6

AC POWER SW

AC INPUT 210V-240V

AC PLUG

50Hz

102℃

PT-SCX-34

230V

115V

20V

BRIDGE

AND FILTER CIRCUIT

+15V

-15v

A -CHANNEL SIGNAL

CN-BAL-FEMALE-2

TL074

gain

FREQ. CONTOLL

80Hz - +920KHz

TL074

high out

gain

pass filter

over freq.

100Hz +1KHz

Low -MID 3

TL074

gain

LOW OUT

or low out

OR MID OUT

B-CHANNEL SIGNAL

CN-BAL-FEMALE-2

TL074

gain

FREQ. CONTOLL

80Hz - +920KHz

TL074

high out

gain

pass filter

over freq.

100Hz +1KHz

Low -MID 3

TL074

gain

LOW OUT

or low out

OR MID OUT

2.Block Diagram

1 2 3 4 5 6 78

7654321

X23.Sch

Titel

Size

File:

Date:

Drawn By:

Sheet

RevisionModel No:

27-Jan-2002

TASY J.S.

ALTO Mobile : X23 MAIN BOARD

11of

X23 V1.0

C101

104P/250VAC

+15V

-15V

R103

2R2 1/2W

R102

2R2 1/2W

J101

3P2.5

AGND

SW205

SW-PBA/6PC

IC201A

MC33079

IC201B

MC33079

D201

4148

D202

4148

D203

4148

D204

4148

C204

220P

-15V

+15V

CN-BAL(FEMALE)

IC201C

MC33079

IC201D

MC33079

IC202A

MC33079

IC202B

MC33079

VR201

10KB

C242

100/25V

R204

10K0

R201

10K0

R202

10K0

R203

10K0 R251

10K0

R205

10K0

R250

10K0

R252

10K0

SW201

SW-PBA/6PC

CD BOOST

C298

822(M)

R283

825R

C202

220P

R244

10K0

R241

15K0

R240

10K0

VR204D

B50K R261

10K0

R262

10K0

C264

182(M)

VR204C

B50K R259

10K0

R260

10K0

C261

182(M)

R243

3K57

VR204B

B50K R257

10K0

R258

10K0 C260

182(M)

VR204A

B50K

R255

10K0

R256

10K0 C257

182(M)

IC202C

MC33079

R245 3K57

IC202D

MC33079

R239

3K92

C210

153(M)

R278 6M8

9 8

IC205A

4066

C209

153(M)

R277 6M8

11 10

IC205B

4066

C211

153(M)

R274 6M8

4 3

IC205C

4066

C212

153(M)

R273 6M8

IC205D

4066

R276

10K0

R275

100K

SW204

SW-PBA/2P

D205 6V8 1/2W

D206 6V8 1/2W

R281

560R

R282 560R

147

IC205E

4066

+15V

-15V

RANGE

X1X10

S-HL2

S-HG2

411

IC202E

MC33079

411

IC201E

MC33079

C203

104P

C206

104P

411

IC203E

MC33079

411

IC204E

MC33079

C243

100/25V

C244

100/25V

C238

470/25V

C237

470/25V

C208

104P(C)

C207

104P(C)

XOVER FREQ 80Hz + 920Hz

STEREO/MONO

R288

10K

C267

47/25V

C266

47/25V

R242 2K49

SW203

SW-PBA/2P

VR203

10KB

R230

4K99

R231

27K4

IC203A

MC33079

IC203B

MC33079

R228

100K

R227

7K50

R226 10K0

R272

2K67

R229

10K0

R279

1K50

D207

LED

HIGH CLIP

-15V

LED-HG2

+15V

IC203C

MC33079

R295

10K0

R263

10K0

R264

10K0

R210

150R

C228

220P

C227

182(M)

C230

100/25V

R211

100K

IC203D

MC33079

R296

10K0

R266

10K0

R265

10K0

R213

150R

C235

220P

C234

182(M)

C232

100/25V

R212

100K

3X11

HIGH

HIGH PHASE

SW206

SW-PBA/2P

33 X12

S-HG2

SW202

SW-PBA/2P

VR202

10KB

R225

4K99

R224

27K4

IC204A

MC33079

IC204B

MC33079

R222

100K

R220

7K50

R221 10K0

R271

2K67

R223

10K0

R268

1K50

D2061

LED

HIGH CLIP

-15V

LED-HL2

+15V

IC204C

MC33079

R254

10K0

R290

10K0

R291

10K0

R206

150R

C218

220P

C217

182(M)

C220

100/25V

R207

100K

IC204D

MC33079

R289

10K0

R293

10K0

R292

10K0

R209

150R

C225

220P

C224

182(M)

C222

100/25V

R208

100K

3X9

LOW

33 X10

S-HL2

R253

10K0

R294

10K0

R284

10K0

C231

220P

R285

10K0

R286

10K0

C233

220P

R287

10K0

C213

104P

C214

104P

C263

100/25V

C265

100/25V

3. Schematic Diagram

1234

321

ATitle

Number RevisionSize

Date: 27-Jan-2002 Sheet of

File: D:\pc42\pc42\pc42\S-OVER\SCX202S\SCX202S\SCX202S.ddbDrawn By:

SCX POWER Schematic

DB1

RB154

104P

IC1

L7815

IC2

L7915

1000/16V

104P

3CN2

3P2.5

+15V

-15V

CN5

2P2.5

1.2K

+15V

-15V

CN3

3P2.5

C18

1000/35V

C19

1000/35V

CN?

CON3

4.Printed Circuit Diagram

X23(M) PCB LAYOUT

PCB : X23(M) Top Layer

PCB : X23(M) Top Solder Mask

PCB : X23(M) Top Overlay

PCB : X23(M) Bottom Layer

PCB : X23(M) Bottom Solder Mask

PCB : X23(M) Bottom Overlay

PCB : X23(M) Drill Drawing Plots

Hole Size Hole Count

24mil (0.6mm) 73

31mil (0.8mm) 68

39mil (1.0mm) 36

47mil (1.2mm) 36

59mil (1.5mm) 2

87mil (2.2mm) 6

150mil (3.8mm) 4

Totals 225

SCX223IO PCB LAYOUT

PCB : SCX223IO Bottom Layer

PCB : SCX223IO Bottom Solder Mask

PCB : SCX223IO Top Overlay

PCB : SCX223IO Drill Drawing Plots

Hole Size Hole Count

31mil (0.8mm) 24

39mil (1.0mm) 14

47mil (1.2mm) 6

55mil (1.4mm) 18

63mil (1.6mm) 12

150mil (3.8mm) 2

Totals 76

XPWR PCB LAYOUT

PCB : XPWR Bottom Layer PCB : XPWR Bottom Solder Mask

PCB : XPWR Bottom Overlay PCB : XPWR Top Overlay

PCB : XPWR Drill Drawing Plots

Hole Size Hole Count

31mil (0.8mm) 14

39mil (1.0mm) 22

63mil (1.6mm) 3

98mil (2.5mm) 4

138mil (3.5mm) 4

Totals 90

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