background image

7

1

2

3

4

5

6

8

A

B

C

D

E

C461

104(M)

R461

4.7/0.5W

R342

5.6K

C441

2.2/50V

R332

5.6K

R420

5.6KF

R320

5.6KF

C411

47P

R310

10K

U305-B

7

6

5

NJM2068M

-

+

R315

5.6K

R481

56K

PROT

C320

2.2\50V

SW301-B
JSS2319

U303-B

7

6

5

NJM2068M

-

+

U304-B

7

6

5

NJM2068M

-

+

C313

823M"TL"

R414

10K

SW301-A
JSS2319

R413

5.6K

TER02-B

WT-9519

C415

823M"TL"

C321

68P

C420

2.2\50V

C421

68P

R421

22KF

R321
22KF

R447

2.7K

R445

1K

R443

22

R444

22

R433

22

VEE

VEE

R361

4.7/0.5W

R381

56K

Q351

C3200GR

C351

100P

D351

1SS133

R352

10K

R351

1.5K

R371

13.7KF

C371

100/16V

R372
820F

R360

0.1/3W

Q335

TIP35C

Q345

TIP36C

Q344

A1023Y

Q334

C1027Y

R350

120

R336

47

R346

47

Q343

C3198GR

R337
3.9K

Q340

C3200GR

Q333

A1266GR

C331

2.2/50V

R335

1K

R334

22

R333

22

R312

10K

R344

22

R343

22

R345

1K

R347

2.7K

Q341

A1266GR

Q342

A1266GR

Q332

C3198GR

Q331

C3198GR

C442
100P

C342

100P

R434

22

R435

1K

Q431

C3198GR

Q432

C3198GR

R370

0.1/3W

R442

5.6K

A

Q442

A1266GR

Q441

A1266GR

Q433

A1266GR

C432
100P

Q440

C3200GR

R437

3.9K

Q443

C3198GR

R446

47

C340

473(M)

R331

1K

C440
473(M)

R462

680/2W

R362

680/2W

R451

1.5K

R471

13.7KF

VCC

R472

820F

C471

100/16V

C493

47P

Q435
TIP35C

Q445
TIP36C

Q444

A1023Y

Q434

C1027Y

C341

2.2/50V

C492

104(M)"TL"

R441

1K

R450

120

U307-B

7

5

6

NJM2068M

+

-

Q451

C3200GR

R341
1K

R436

47

C325

10/16V"SRE"

VCC

R431

1K

R496

6.8K

C431

2.2/50V

C305

22P

R493

39K

C451
100P

R497
150K

D451

1SS133

C361

104(M)

R452
10K

VR303-A

20KB

C332
100P

R432
5.6K

C306

22P

R492

1K

R491

1K

R411

10K

C405

22P

VR302A

50KC

C393

47P

R465

1K

C392

104(M)"TL"

U310-B

7

6

5

NJM2068LD

-

+

U306-B

7

5

6

NJM2068M

+

-

R396
6.8K

R393

39K

R466

1K

REAR-L

VR302C

50KC

REAR-R

R365

1K

R397
150K

R366

1K

U310-A

1

3

2

NJM2068LD

+

-

C303

22/16V"SRE"

R302
47KF

R301
22KF

VR303-B

20KB

C304

10P

R303
47KF

C406

22P

R311

10K

VR302D

50KC

R423
270K

U301-A

1

2

3

NJM2068LD

-

+

R424
270K

R324
270K

R470

0.1/3W

R392

1K

R306
47KF

R307

1K

C315

823M"TL"

C423

22/16V"SRE"

R391

1K

R313

5.6K

R314

10K

C311

47P

C424

22/16V"SRE"

VR302B

50KC

C491

104(M)"TL"

R412

10K

U307-A

1

3

2

NJM2068M

+

-

U306-A

1

3

2

NJM2068M

+

-

C413

823M"RL"

U304-A

1

2

3

NJM2068M

-

+

R407

1K

U303-A

1

2

3

NJM2068M

-

+

R415

5.6K

C324

22/16V"SRE"

U305-A

1

2

3

NJM2068M

-

+

C323

22/16V"SRE"

R410

10K

C391

104(M)"TL"

R369
200K

R460

0.1/3W

C401

102P

R408

820

C402

22/16V"SRE"

C403

22/16V"SRE"

R402
47KF

R401
22KF

C404

10P

R403
47KF

U301-B

7

6

5

NJM2068LD

-

+

C301

102P

RCA301-B

DJB-562D

C302

22/16V"SRE"

R405
47KF

C455

10/16V"SRE"

R406
47KF

R355

15KF

C356 22P

R356 91KF

R323
270K

R308

820

VR301-B

20KB

C355

10/16V"SRE"

C456

39P

R455
15KF

R457

9.31KF

R456 47KF

U302-A

8

3
2

1

NJM2068M

R422

10K

U302-B

NJM2068M

7

5

6

4

VR301-A

20KB

R322

10K

RCA301-A
DJB-562D

R305
47KF

HI-INPUT

HI301

LAD1140-04PBK

C425

10/16V"SRE"

SW302

JSS2219

CLIP

CLIP

D369

1SS133

C495
473P

C496
473P

C396
473P

C395
473P

D469

1SS133

R469
200K

37.78V

0.89V

0.38V

0V

-0.61V

0.57V

-37.74V

-0.94V

-0.28V

-0.41V

37.78V

0.89V

0.38V

0V

-0.41V

-0.94V

-37.74V

-0.61V

0.57V

-0.28V

-38.86V

37.78V

37.78V

-15V

+15V

-15V

-38.86V

38.86V

+15V

+15V

-15V

+15V

STEREO

MONO

LOW INPUT L-CH

LOW INPUT R-CH

-15V

FLAT

FLAT

HPF

HPF

LPF

LPF

R/LOUT

R/ROUT

+

-

-

+

50Hz 0~12dB BASSBOOST

32-320Hz VARIABLE X-OVER

24

Содержание 7540a

Страница 1: ...Reference Series 7540a 7541a 4 CHANNEL POWER AMPLIFIER SERVICE MANUAL Infinity Systems Inc 250 Crossways Park Dr Woodbury New York 11797 Rev3 10 2005...

Страница 2: ...78W RMS x 2 channels 4 ohms 1 THD N Signal to noise ratio 81dBA reference 1W into 4 ohms Dynamic power 164W 2 ohms Effective damping factor 6 315 4 ohms Frequency response 10Hz 100kHz 3dB Maximum inpu...

Страница 3: ...Reference 7540a 7541a 2...

Страница 4: ...e should be selected based on total amplifier current draw see chart at right REMOTE CONNECTION Connect the amplifier s Remote REMOTE terminal to the source unit s RemoteTurn On lead using a minimum o...

Страница 5: ...inimum speaker impedance for bridged operation is 4 ohms NOTE Bass Boost only affects rear channels APPLICATIONS 7540a 7541a Figure 7 7540a 7541a amplifier in 4 channel stereo operation to drive front...

Страница 6: ...ttery Apply power to the audio system and play a dynamic music track 3 On the source unit increase the volume control to 3 4 volume Slowly increase the INPUT LEVEL control s toward three o clock until...

Страница 7: ...g is not blocked at mounting location verify that speaker system impedance is within specified limits PROBLEM No audio PROTECT and POWER LEDs flash CAUSE and SOLUTION Voltage less than 9V on BATT conn...

Страница 8: ...Reference 7540a 7541a 7...

Страница 9: ...7 1 2 3 4 5 6 8 A B C D E Reference 7540a 7541a 8...

Страница 10: ...Power Amplifier Reference 7540a 7541a 9...

Страница 11: ...7540a 7541a BLOCK DIAGRAM Power Amplifier Reference 7540a 7541a 10...

Страница 12: ...m R291 150 2W C16 47 25V J116 6m m Q432 C3198GR R191 150 2W Q281 C3198GR J90 12 5m m Q181 C3198GR C05 2200 25V WL Q144 A1023Y R62 4 7KF C421 68P J147 10m m R161 4 7 0 5W R450 120 Q134 C1027Y C241 2 2...

Страница 13: ...60 J19 TH01 R22 R152 R42 R43 J20 R251 D54 Q02 Q11 Q12 J131 R447 D151 C142 Q21 R437 Q01 C461 Q33 R150 J126 R452 D04 Q23 J06 D451 J71 R62 C132 R52 C421 Q433 Q432 J103 R291 C241 J170 Q281 R191 Q181 J89 Q...

Страница 14: ...Reference 7540a 7541a 13...

Страница 15: ...Reference 7540a 7541a 14...

Страница 16: ...R CARBON FILM 1 5WJ 1K OHM R31 42 52 92 107 127 128 131 135 141 36 R145 165 166 207 227 228 231 235 241 245 R265 266 307 331 335 341 345 365 366 407 R431 435 441 445 465 466 RES 00 00598 RESISTOR CARB...

Страница 17: ...2 147 148 J149 208 209 210 215 223 224 226 227 JUP 00 00052 JUMPER 0OHM JUMPER 11m m J126 127 167 168 205 5 JUP 00 00046 JUMPER 0OHM JUMPER 12 5m m J44 45 46 47 48 49 50 71 72 81 23 J82 89 90 91 92 93...

Страница 18: ...491 492 4 RES 08 00201 RESISTOR SMD 0805 1 10WJ 5 6K OHM R113 115 213 215 313 315 413 415 8 RES 08 00210 RESISTOR SMD 0805 1 10WJ 6 8K OHM R396 496 2 RES 08 00132 RESISTOR SMD 0805 1 10WJ 10K OHM R110...

Страница 19: ...TOR RES 00 00417 1 5WF 13 7K OHM R171 271 371 471 2 REF 7541a RESISTOR RES 00 00508 1 5WF 33K OHM R171 271 371 471 REF 7540a RESISTOR RES 08 00225 SMD 0805 1 10WJ 820 OHM R108 208 308 408 3 REF 7541a...

Страница 20: ...Reference 7540a 7541a 19...

Страница 21: ...Reference 7540a 7541a 20...

Страница 22: ...Reference 7540a 7541a 21...

Страница 23: ...R41 220 0 5W Q23 A1266GR C04 2200 25 WL D04 1SS133 R60 10 5KF R42 1K R43 47 R53 47 R52 1K D03 1SS133 Q33 A1266GR R51 220 0 5W D01 1N5404 L03 CL 310 FH01 30Ax2 R46 47 T01 44PHI 4T 11T 8T 8T Q54 FQP50N0...

Страница 24: ...Q151 C3200GR C151 100P D151 1SS133 R152 10K C161 104 M R161 4 7 0 5W R151 1 5K R171 13 7KF C171 100 16V R172 820F C291 220 16V D291 1N4744 15V R291 150 2W R160 0 1 3W Q135 TIP35C Q145 TIP36C Q144 A10...

Страница 25: ...K R411 10K C405 22P VR302A 50KC C393 47P R465 1K C392 104 M TL U310 B 7 6 5 NJM2068LD U306 B 7 5 6 NJM2068M R396 6 8K R393 39K R466 1K REAR L VR302C 50KC REAR R R365 1K R397 150K R366 1K U310 A 1 3 2...

Страница 26: ...R60 10 5KF R42 1K R43 47 R53 47 R52 1K D03 1SS133 Q33 A1266GR R51 220 0 5W D01 1N5404 L03 CL 310 FH01 30Ax2 R46 47 T01 44PHI 4T 11T 8T 8T Q54 FQP50N06 Q43 FQP50N06 Q21 C3198BL D41 YG225D2 D42 YG225D2...

Страница 27: ...V R291 150 2W R160 0 1 3W Q135 TIP35C Q145 TIP36C Q144 A1023Y Q134 C1027Y R150 120 R136 47 R146 47 Q143 C3198GR R137 3 9K Q140 C3200GR Q133 A1266GR D191 1N4744 15V C191 220 16V R191 150 2W R135 1K R13...

Страница 28: ...REAR L VR302C 50KC REAR R R365 1K R397 150K R366 1K U310 A 1 3 2 NJM2068LD C303 22 16V SRE R302 47KF R301 22KF VR303 B 20KB C304 10P R303 47KF C406 22P R311 10K VR302D 50KC R423 270K U301 A 1 2 3 NJM...

Страница 29: ......

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