Alto SR400A Service Manual Download Page 22

PC00281

SR400A

SR400A_ALTO_230V

REVISED: 2006/5/30

LEVEL 

PART NO  DESCRIPTION

SPECIFICATION

QTY

REFERENCE 

├0001---------------------------------

MG00349

screw

M3*16

12

├0002---------------------------------

MD00562

iron net

SR 400A ALTO_V1.0

1

│└0001-------------------------------

MD00540

iron net

SR400A_V1.0

1

│ └0001------------------------------

MD00539

iron net

SR400A_V1.5

1

│  └0001-----------------------------

MD00538

iron net

1.2t*607*392mm_V1.1

1

├0003---------------------------------

MG00511

screw

M4*37_V1.0

6

├0004---------------------------------

NI02923

high pitch  horn

280*206.5*17mm black

1

├0005---------------------------------

MG00350

screw

M5*30

12

├0006---------------------------------

NI03153

horn

SR400A black_V1.0

1

├0007---------------------------------

ND00231

sponge

15*50*50mm

1

├0008---------------------------------

MG00495

screw

M6*13*1.0PH

3

├0009---------------------------------

NI02924

fixed bracket

84.9*114.3*15mm black

1

├0010---------------------------------

HG00082

speaker

PA-DE34 Zn P-AUDIO 8Ω

1

├0011---------------------------------

NC00217

box

SR-400A 12 inch PLYWOOD_V1.0

1

│├0001-------------------------------

NI03152

handle

85.6*207*7 black_V1.0

2

│├0002-------------------------------

NI03151

handle cover

SR400A;SR500SA black_V1.0

2

│├0003-------------------------------

MI01870

fixed bracket

SR400A_V1.1

5

││└0001-----------------------------

MI01871

fixed bracket

SR400A 3.0t*70*70_V1.1

1

││ ├0001----------------------------

MJ01240

single light board

3.0t*1950*1185mm 54kg

1

││ └0002----------------------------

ME00125

iron pillar

M10*9*1PH_V1.1

2

│├0004-------------------------------

MG00464

screw

M10*30*1.5PH

10

│├0005-------------------------------

MG00031

screw

M4*12

40

│└0006-------------------------------

NC00218

box

SR-400A 12 inch PLYWOOD

1

│ ├0001------------------------------

ME00085

nut

M4

8

│ ├0002------------------------------

ME00082

nut

M5

12

│ ├0003------------------------------

ME00083

nut

M6

4

│ ├0004------------------------------

MG00353

screw

M6*30

4

│ ├0005------------------------------

MH01704

handle

ELVIS φ110*96_V1.0

1

│ │└0001----------------------------

MH00801

bracket

φ110*96_V1.1

1

│ ├0006------------------------------

NI02426

foot cushion

φ37*15.5mm

4

│ ├0007------------------------------

MG00360

screw

M4*25mm

4

│ ├0008------------------------------

MG00338

screw

M4*30mm

8

│ ├0009------------------------------

MG00361

screw

M4*20mm

12

│ ├0010------------------------------

ND00381

absorb sound sponge

30*300*400mm_V1.0

1

│ └0011------------------------------

ND00382

absorb sound sponge

30*400*750mm_V1.0

1

├0012---------------------------------

MG00351

screw

M4*16

10

├0013---------------------------------

ND00367

EV foam

2.0t*100*18mm black_V1.0

2

├0014---------------------------------

ND00368

EV foam

2.0t*378*18mm black_V1.0

2

├0015---------------------------------

ND00374

EV foam

2.0t*948*18mm black_V1.0

1

├0016---------------------------------

ND00397

EV foam

φ204.5*φ186.5*2 black_V1.0

1

├0017---------------------------------

HK01410

speaker

12" 150W 4Ω PS 4HA(#2289_LP318.65)

1

│├0001-------------------------------

HG00117

voice coil-RS

A0844A_ BK 65-40-335/16-3

1

│├0002-------------------------------

NH00294

cone

U-SONICS NO:CP240/17-SC277A/6-F

1

│├0003-------------------------------

NH00243

cushion

C0810A_GR 318/6+2

1

│├0004-------------------------------

ND00310

spider-RS

D0839A_CT 65-145/17C3 CNX

1

│├0005-------------------------------

NH00233

cover

E0649A_CP 108/C

1

│├0006-------------------------------

MH01649

T type middle pillar

H0811A_PN 65/1450.10 D30

1

│├0007-------------------------------

MH01825

washer

I0812A_PS 65/1450.8 W J_V1.1

1

│├0008-------------------------------

MH01647

magnet

G0450A_D154*73*19mm

1

│├0009-------------------------------

MI01957

holder

L0712B_CR 318/J  N

1

│├0010-------------------------------

HC00426

terminal

M0021B_PT2.1

1

││├0001-----------------------------

HC00496

connect terminal

0.8*13*16.3mm

1

││├0002-----------------------------

HC00495

connect terminal

0.8*13*16.3mm

1

││└0003-----------------------------

NI02583

terminal block

3.5*24.5*3t

1

│├0011-------------------------------

MH01110

rivet

M0500A_OU-30

2

│├0012-------------------------------

HA02493

strand

TA4X4YKA42W*110mm

2

││└0001-----------------------------

HA02079

strand

TA4X4YKA42W*1M

110

│├0013-------------------------------

ND00228

sponge

S0720B_NYLON NET D45

1

│└0014-------------------------------

NE16129

lable

HK01410_V1.0

1

│ ├0001------------------------------

NI00014

membrane

0.035*1M

1

│ └0002------------------------------

NH00012

bond paper

0.04*1M

1

├0018---------------------------------

HK04468

faceplate

SR400A-ALTO-230V

1

│├0001-------------------------------

MA05400

panel

SR400A ALTO_V1.1

1

││└0001-----------------------------

MA04000

panel

SR-300A

1

││ └0001----------------------------

MA03999

panel

SR300A 1.5t*202*26.5*404_V1.1

1

││  ├0001---------------------------

MJ00088

single light board

1.5*2135*1220 30.67kg

1

││  ├0002---------------------------

MI00318

connect terminal

PFM-15SA

1

08-1

Summary of Contents for SR400A

Page 1: ...Service Manual ALTO REV 2 Model SR400A...

Page 2: ...CONTENTS 1 Specifications 2 Block Diagram 3 Schematic Diagram 4 Printed Circuit Board 5 Test Procedures 6 Structural Drawing 7 Exploded View Mechanical Parts List 8 Electrical Parts List...

Page 3: ...d____ 70V V V Load____ 100V V V Aux At 1KHz FLAT Rated W 5 Maximum at Output 10 THD Aux 1KHz dB Load W W FLAT 7 Hum or Noise VR Line Max Low 7 mV mV DSP OFF VR Line Max Hi 7 mV mV DSP OFF 8 100HZ dB 1...

Page 4: ...22KHz HI 50 0 5 dBV 60 dB 0 5 1 25Hz 22KHz 24V dB dB MIC UNBAL dB dB MIC dB dB LINE dB dB 24V dB dB MIC 2 UNBAL dB dB MIC dB dB LINE dB dB 24V dB dB MIC 3 UNBAL dB dB MIC dB dB LINE dB dB 24V dB dB M...

Page 5: ...OW V V V V HI POWER SUPPLY SWITCH LOW SPEAKER HI SPEAKER LOW V LOW V HI V HI V AC INPUT 238094 DSP MODULE HPF LPF Title Size A3 Number Date File Sheet of Drawn By Revision SR400A SR400A BLOCK DIAGRAM...

Page 6: ...2 13 14 CN1 CN 7PX2 F C17 47u 63V 1 2 3 _ IC1A 33079 C7 22P R4 10K R5 10K C6 0 0033u R3 6K8 14 13 12 _ IC3D 33079 1 3 2 DL1 SIGN LIMIT R9 1K2 15V 15V 5VD 15V 15V NC 1 OUT 2 NC 3 GND 4 GND 5 NC 6 V 7 N...

Page 7: ...4 T6 3A F2 T6 3A D1 KBPC25 D4 GBU8D D2 1N4002 C2 0 01uF400V C1 400V 10N S1 S4 S3 S5 S2 VCC1 VCC1 VCC2 VCC2 Vac KBU806 BP25 06PWS Title Size A4 Number Date File Sheet of Drawn By Revision SR400A P 3131...

Page 8: ...R14 10E R26 4E7 C27 0 0047U 7 6 5 _ IC6B MC33078 1 2 3 4 8 _ IC6A MC33078 1 2 3 4 8 _ IC5A MC33078 7 6 5 _ IC5B MC33078 R78 15K R77 22K R80 1K R76 1K R75 47K R74 100K R71 15K R70 47K R73 10E R11 10K D...

Page 9: ...04 1...

Page 10: ...TOPLAYER TOPOVERLAY BOTTOMLAYER 04 2...

Page 11: ...04 4...

Page 12: ...04 3...

Page 13: ...to amplifier high output Par 3 Initial test Increase slowly the VARIAC voltage up to the nominal value 230Vac Check the transformer sec voltages with multimeter without signal on input S1 S2 90V 1 5Va...

Page 14: ...ifier Decrease to zero the signal generator then adjust VR1 trimmer to have a 5mV 0 5mVdc voltage drop across R13 R15 0 22 power resistors Par 8 HIGH amplifier check Select a 10KHz frequency with 0dB...

Page 15: ...peaker Module Test Condition 1 Short circuit 2P pins of CN1 on DSP board 313115 1 board 2 LINE INPUT 1kHz LOW output 2V 4Ohm 3 The upper curve is for treble output frequency response and the lower one...

Page 16: ...05 4...

Page 17: ...06 1...

Page 18: ...06 2...

Page 19: ...06 3...

Page 20: ...07 1...

Page 21: ...14 NI03152 headle ABS 85 6 207 7 black _V1 0 2 15 MG00361 black screw pill M4 20mm 12 16 NI031151 handle cover ABS SR 400A SR 500SA black_V1 0 2 17 NC00217 K speaker wooden box SR 400A 12 inch PLYWOO...

Page 22: ...61 screw M4 20mm 12 0010 ND00381 absorb sound sponge 30 300 400mm_V1 0 1 0011 ND00382 absorb sound sponge 30 400 750mm_V1 0 1 0012 MG00351 screw M4 16 10 0013 ND00367 EV foam 2 0t 100 18mm black_V1 0...

Page 23: ...G00363 copper pillar M3 14 0 5PH 3 0032 MG00024 screw M3 7 0 5PH 19 0033 MG00027 screw M3 12 13 0034 MG00042 screw M3 10 2 0035 MG00327 screw M3 10 0 5PH 4 0036 MG00069 screw M4 16 1 0037 MF00014 wash...

Page 24: ...Y5E 2 C21 C24 0028 CA00040 ceramic capacitor 0 001uF Z5V 1 C1 0029 CA00069 ceramic capacitor 390PF Y5E 2 C39 C40 0030 CH00017 laminated capacitor 0 1uF 50V Y5V PH5 2 C16 C19 0031 CC00012 mylar capaci...

Page 25: ...JY 5030 030G 180 1 MIC2 0036 HC00582 balance MIC jack NCJ6FI V NEUTRIK 1 MIC1 0037 TC00004 transformer SEV1924 03 EE 19 1 L1 0038 CG00018 filter EMI FILTER LF 22UH WAH TAYI 2 L2 L3 0039 NI02532 LED sp...

Page 26: ...I00063 SMD ceramic capacitor 0603 470PF 50V NPO 5 4 C8 C10 C11 C13 0025 CI00075 SMD ceramic capacitor 0603 0 1uF 50V Y5V 80 20 28 C3 C4 C5 C6 C7 C15 C16 C17 C18 C19 C21 C2 8 C29 C30 0026 CI00266 SMD c...

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