__4U7 63V 20%CAP T&R RAD. Yorkville Sound 50K KW, 50K KB

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3498

3450

3460

6408

4418

6824

6827

3414

3660

3498

4420

4417

6128

4799

4823

4980

4834

6123

4849

4897

4833

4829

4838

4827

4834

5256

5231

5317

5256

5887

5267

5408

5257

5376

5282

5420

5267

6451

6435

5260

5841

6824

6438

6824

YS #

5314

5422

5961

5879

5259

5314

5422

5404

REF

LD1

C38

C39

C40

C41

R15

R16

R17

R18

R19

R20

R21

R22

R10

R11

R12

R13

R14

C30

C31

C32

C33

C34

C35

C36

C37

C18

C19

C24

C25

C26

C27

C28

C29

C10

C12

C13

C14

C15

C16

C17

Description

100N 50V 10%CAP T&R BEAD X7R

__1N 50V 10%CAP T&R BEAD NPO

_33U 16V 20%CAP T&R RAD .2IN NP

100U 16V 20%CAP T&R 8X7MM .2EL

__4U7 63V 20%CAP T&R RAD .2

100N 50V 10%CAP T&R BEAD X7R

__1N 50V 10%CAP T&R BEAD NPO

_27P 100V 10%CAP T&R BEAD NPO

_47P 100V 10%CAP T&R BEAD NPO

__2U2 63V 20%CAP T&R RAD .2EL

__6N8 50V 5%CAP T&R BEAD X7R

_10U 16V 20%CAP T&R 5X7MM .2NP

680P 50V 10%CAP T&R BEAD NPO

100U 25V 20%CAP T&R RAD .2EL

__1U 63V 5%CAP T&R RAD .2FLM

220N 63V 5%CAP T&R RAD .2FLM

180N 50V 10%CAP T&R BEAD X7R

__1U 63V 5%CAP T&R RAD .2FLM

2200U 50V 20%CAP BLK 18X27MM EL

100U 25V 20%CAP T&R RAD .2EL

__4N7 250V 20%CAP BLK 'Y' 10MM AC

_22N 275V 20%CAP BLK 'X2' 15MM AC

_22U 50V 20%CAP T&R RAD .2EL

_47N 250V 10%CAP RAD POLYFILM BULK

1N5246B 16V0 0W5 ZENER 5% T&R

1N4007 1000V 1A0 DIODE T&R

1N5246B 16V0 0W5 ZENER 5% T&R

1N5402 200V 3A0 DIODE

INTERNATIONAL PC MOUNT FUSEHOLDER

XLR FEML PCB MT HORZ

1/4" JCK PCB MT HORZ

1/4" JCK PCB MT ALL-GOLD SKT

RCA DUAL PCB MT VERT GOLD .475"

GRN 3MM LED 2V2 20MA DIFFUSD

_10K 5C R/A 9MM HORIZONTAL P28

_50K B LIN 9MM HORIZONTAL P28

_10K 5B LIN 9MM HORIZONTAL P28

W250 4K99 1%MINI MF T&R RES

W250 562R 1% T&R RES

W250 180K 5% T&R RES

W250 120R 5% T&R RES

W250 27K 5% T&R RES

W250 10K 5% T&R RES

W250 100K 5% T&R RES

W250 4K7 5% T&R RES

W250 47K 5% T&R RES

W250 1K 5% T&R RES

W250 470R 5%MINI T&R RES

W250 47K 5% T&R RES

W250 20K0 1%MINI MF T&R RES

M578A Parts Reference List 1/22/2016

REF

X33

X34

X35

X36

X37

X38

X39

_C11

W13

W14

W15

W17

W18

X30

X31

X32

_C20

_C21

_C22

_C23

_R29

_R30

_R31

_R32

_X63

_X64

W10

W11

W12

R59

R60

R61

R51

R52

R53

R54

R55

R56

R57

R58

R43

R44

R45

R46

R47

R48

R49

R50

R35

R36

R37

R38

R39

R40

R41

R42

R23

R24

R25

R26

R27

R28

R33

R34

4597

5404

5318

5428

5314

5308

4864

4829

4599

4847

4599

3392

3417

4597

6882

3392

3451

3392

4824

6128

4823

6128

4666

4830

4692

4709

4825

4654

4873

6128

6840

6882

6755

YS #

6123

2036

4829

4873

4829

4823

4838

4829

4675

4666

Description

W250 20K0 1%MINI MF T&R RES

W250 36K0 1%FLAME PROOF T&R RES

W250 10K 5% T&R RES

W250 680R 5% T&R RES

W250 10K 5% T&R RES

W250 1K 5% T&R RES

W250 100K 5% T&R RES

W250 10K 5% T&R RES

W500 10R 5% T&R RES

W500 4R7 5% T&R RES

W250 15K 5% T&R RES

5W00 100R 5% BLK RES

5W00 22R 5% BLK RES

W250 1K8 5% T&R RES

W500 1K2 5% T&R RES

W250 1K5 5% T&R RES

W250 4K99 1%MINI MF T&R RES

W250 1K 5% T&R RES

W250 4K99 1%MINI MF T&R RES

W250 680R 5% T&R RES

W250 4K99 1%MINI MF T&R RES

MC33078P IC DUAL OP AMP

TL072CP IC FET DUAL OP AMP

LM3876T IC 40 WATT POWER AMP

TL072CP IC FET DUAL OP AMP

250 MALE TAB .2IN T&R

EYELET SMALL 0.089 OD PLATED

250 MALE TAB .2IN T&R

6-32 SNAP IN SCREW TERM

22AWG STRAN TC WIR T&R JMP

_27P 100V 10%CAP T&R BEAD NPO

220N 50V 10%CAP T&R BEAD X7R

__3N3 50V 10%CAP T&R BEAD Y5R

100N 50V 10%CAP T&R BEAD X7R

_47N 50V 10%CAP T&R BEAD X7R

W250 2K7 5% T&R RES

W250 10K 5% T&R RES

22AWG SOLID SC WIR T&R JMP

W250 2K2 5% T&R RES

22AWG SOLID SC WIR T&R JMP

REF YS # Description

A B C D E F G H I J K L M N O P Q

MIC_IN NUTRIX

CHANNEL 1

INPUT

+16V -16V

100N 50V

3660

MONO

J2 S

LEFT/MONO

J3 S

N69

CHANNEL 2

INPUT

RIGHT

Tie-net Name

100N

50V

100N

50V

+16V

100N

50V

100N

50V

-16V

1/4W

4K99

MINI

1/4W

4K99

MINI

R16

1/4W

470R

MINI

R17

1/4W

470R

MINI

R18

1/4W

470R

MINI

R19

1/4W

470R

MINI

100U

25V

C36

R52

1/4W

+16V

1/4W

562R

1/4W

562R

R21

1/4W

47K

3460

PCB MT

GOLD .475

R20

1/4W

47K

R22

1/4W

20K0

MINI

R23

1/4W

20K0

MINI

1/4W

4K99

MINI

BEAD

50V

MC33078P

U1:A

1/4W

4K99

MINI

BEAD

50V

33U 16V

GAIN-1

5C R/A

120R

10K P1:A

4418

100U

16V

C10

1/4W

180K

+16V

MC33078P

U1:C

N10

U1:B

-16V

R25

1/4W

36K0

FLMP

C16

47P

BEAD

100V

+16V

TL072

U2:C

U2:A

R24

1/4W

36K0

FLMP

-16V

C17

47P

BEAD

100V

RAD .2in

63V 2U2

C18

10K

5B LIN

4417

P4:A

GAIN-2

R10

1/4W

10K

1/4W

27K

N16

R12

1/4W

4K7

_C11

BEAD

100V

R11

1/4W

100K

TL072

RAD .2in

63V 4U7

C12

U2:B

_C11

_C20

_C21

_C22

_C23

_R29

_R30

_R31

_R32

_X63

_X64

MULTI VALUE PARTS

M578A M578B

27P 5404 47P 5408

NotStuffed

47N 5308

0R0 4599

NotStuffed

Stuffed

NotStuffed

100N 5314

68N 5310

2K2 4847

NotStuffed

Stuffed

M578A

M578B

_X64

M578A

M578B

_C23

50V

R34

R36

100K

C13

100N 50V

BASS

50K

B LIN

P3:A

4420

B LIN

50K

4420

P2:A

TREBLE

C14

R14

1/4W

47K

BEAD

50V

R13

1/4W

4K7

R15

1/4W

C15

27P 100V

TL072

U3:A

BLK

TRANS_PRIM

BLK

XF1

#1309

120VAC

60 Hz

C38

22N

TRANS_PRIM

'X2' 15MM

275V 5

BLK

SPDT2

W10

BLK

AC_BLK

AC_HOT

GRN

CHASSIS GND

C37

4N7

'Y' 10MM

250V

AC_RET

BLK

WHT

+35VDC

SEC_IN

RED

XF_S2

1N5402

SEC_GND

1N5402

W11

YEL

1N5402

SEC_IN

1N5402

W12

RED

XF_S1

LD1

GRN

-35VDC

R49

1/4W

1K5

2200U

50V

C33

R45

1/4W

1K8

R46

1/4W

1K8

2200U

50V

C32

R47

1/2W

1K2

R48

1/2W

1K2

100U

C35

25V

+16V

1N5246B

16V0

0W5

100U

C34

25V

1N5246B

16V0

0W5

-16V

10U

16V

C24

R35

680P

50V

C26

680P

50V

C25

_C21

C27

25V

100U

R28

1/4W

10K

C19

6N8

BEAD

50V

R27

1/4W

10K

NC1

NC2

NC3

_C20

50V

_R29

63V

C31

R42

1/4W

15K

LM3876T

1N5246B

16V0

0W5

R26

1/4W

10K

4007

_R30

1/4W

_C22

50V

_R31

1/4W

_R32

+16V

TL072

U3:C

U3:B

-16V

R55

4K99

MINI

4K99

1/4W

R53

MINI

4K99

1/4W

R56

-16V

U5:A

U5:C

TL072

+16V

MINI

4K99

1/4W

R54

MINI

4K99

1/4W

R61

TL072

U5:B

MINI

4K99

1/4W

R59

MINI

4K99

1/4W

R58

+35VDC

MINI

4K99

1/4W

R60

CHASSIS_GND

GRN W5

CHASSIS_GND1

T R S

Gold Gold Gold

PHONES

R43

100R

W13

RED

SPKR(+)

WHT

R44

5.0W

22R

W14

TWEET(-)

R33

1/4W

680R

C41

47N 250V

R57

1/4W

680R

EFX_SEND

T R S

Gold Gold Gold

LINE_IN

220N

63V

C29

R38

10R

R39

10R

180N

50V

C30

R40

4R7

R41

4R7

SP1

10in #7322 4R

W15

BLK

SPKR(-)

SP2

3.75in #7429 4R

1TWEEET_MINI

R37

10K

63V

C28

-35VDC

L M N

Product

50KB/50KW

Sheet1

Date: Mon Jul 13, 2015

Filename:

PCB# X578 Sheet

Rev: V6.20

X578V07sch.sch2006

O P

1 of 2

A B C D E F G H

N16

N62

N30

N36

N35

X62

X61

X45

X10

X58

X60

X59

X17

X54

N16

N62

N30

N36

N35

+16V

-16V

N34

1TWEEET_MINI

X55

+16V

X56

-16V

X47

X39

N34

X25

-16V

X22

1TWEEET_MINI

-35VDC

1TWEEET_MINI

+16V

-35VDC

-16V

N30

N16

X57

X34

X11

X37

X12

X40

X19

X50

-16V

X29

X28

X15

X33

1TWEEET_MINI

-35VDC

1TWEEET_MINI

-35VDC

N47

1TWEEET_MINI

+16V

-35VDC

N30

N16

-16V

X14

X26

X30

X18

-35VDC

N47

BEC1

EC6 XC59

XC60 XC61

XC48

XC53

XC55

EC4

XC57

XC47

XC54

XC49

XC58

TJH1

TJH2

XC23

XC38

XC37

XC9

XC21

XC26

XC31

XC33

XC40

XC29

XC43 XC10 XC66 XC67

XC15

XC19

XC22

XC2

XC3 XC4 XC5 XC14 XC50 XC52

XC6

XC44

XC20

B C D

ERNIE

3417

W17

3417

W18

BERT

N13

N73

N72

N15

P1:B

P2:B

P3:B

P4:B

N57

X31

X32

X41

X35

+35VDC

X42

-35VDC

N13

N73

N72

N15

+16V

N47

N57

X21

X16

X44

X43

N57

+35VDC

-35VDC

+16V

N47

N57

-16V

N31

N32

N38

X36

X53

X13

X48

X52

X38

X51

X20

-16V

N31

N32

N38

F G H

I J K L M N O P

"STYLE_P28"

LM3876T

POTENTIOMETERS/SWITCHES AND KNOBS

MODEL(S):5OKB/50KW M578A/M578B {TITLE}

REF

FUNCTION

GAIN-1

TREBLE

BASS

GAIN-2

POT/SW YS#

#4418

#4420

#4417

KNOB

#8641

MODELS:

# COMP#

_C11

_C20

_C21

_C22

_C23

_R29

_R30

_R31

_R32

_X63

_X64

50KW 50KB

M578A

27P 5404

220N 5318

3N3 5428

NotStuffed

47N 5308

2K7 4864

10K 4829

0R0 4599

NotStuffed

Stuffed

NotStuffed

M578B

47P 5408

100N 5314

1N5 5424

100N 5314

68N 5310

3K9 4850

4K7 4827

2K2 4847

NotStuffed

Stuffed

MULTI VALUE PARTS

{MODEL C}

{BOARD C}

{MODEL D}

{BOARD D}

J K L

MODEL(S):-

PC#

X578 PENDING CHANGES

50KB, 50KW

PENDING CHANGE

*PLACE IMPLEMENTED CHANGES INTO BOARD HISTORY

X578 PCB DATABASE HISTORY

MODEL(S):-

50KB/50KW

DATE VER# DESCRIPTION OF CHANGE

JAN-2000

APR-2000

20-APR-2000

23-NOV-2000

1.P0

1.0P2

1.0P3

2.00

PC#____ DERIVED FROM M512

POTS CHANGED TO STYLE 28

GROUNDS UPDATED, RCA JKS WIRES->JMPR

DELETE D11->D14, C12 15P->27P

PC#6248 #3417 BRKTS MOVED DOWN .010

PC#6346 R21,ZD4 MOVED DOWN

07-FEB-2001 2.10 PC#6316 50KW C38 150N->220N

18-APR-2002 3.00 NEW PADS FOR FUSEHOLDER

08-NOV-2002 4.00 PC#6576 RESIZE TO ALLOW SHEARING

10-JUL-2003

2-SEP-2003

22-SEP-2003

5.00P0

5.00P1

BEFORE ASSEMBLY NEW TAB HOLE SIZE

PCAD2002 REDRAW,16V MIC PHANTOM,EFX GND REREF

REV. C27, MOVE F1, ROUTING&DRILL HOLES CHANGED

25-NOV-2003

11-DEC-2003

9-FEB-2004

MAR-01-2005

24-MAY-2005

07-JUL-2009

6.10

6.20

09-JUL-2015 VO7

D V

5.00P1.2

5.00

6.00

Moved F1 to give room to W7

Change copper pour by X27 to stop the perception of a short

Fixed position of shear holes

Corrected J7 to be #3523

GT:FIXED AC CE CLEARANCES

PC#6904: ADD TARGETS TO CORNERS OF THE BOARD

ADDED SCORE AND REMOVED SOME ROUTES

Board changed from single to double sided.

Product

50KB/50KW

ECO

Date: Mon Jul 13, 2015

Filename:

PCB# X578 Sheet

Rev: V6.20

X578V07sch.sch2006

O P

2 of 2

M N

ClinchRepeats - [email protected]@6.400

StepAndRepeat - [email protected],[email protected]

BREAK PANEL IN 2 ALONG THIS SCORE LINE BEFORE CLINCHING.

AlternatePCB1 - M578B

CLINCH

ORIGIN

INTO WAVE

V07

3417

W17

50KW

M578A

V07

50KB

M578B

25V

100U

C28

C31

LM3876T

6755

C24

10U

16V

BEC

LOC

C29

220N

R40

1/2W

4R7

1/2W

4R7

1/2W

10R

1/2W

10R

3417

BLK

W15

W18

RED

W13

R44

22R

5.0W

4709

WHT

W14

C10

100U

16V

4418

10K

BOT

5C R/A

WIP TOP

33U

16V

562R

MC33078P

6840

3498

INSERT

VCD

ORIGIN

SPKR(-)

SPKR(+)

R43

100R

5.0W

4692

TWEET(-)

CHASSIS GND

GRN

C37

M578A

M578B

50KW

50KB

_X63

_X64

NotStuffed

Stuffed

50KW

M578A

V07

50KB

M578B

5887

2200U

50V

C33

C38

6435

22N

275V

Yorkville

2015

C12

10K

C34

25V

100U

25V

100U

C35

R26

R45

R46

1K8

* *

27K

C40

22U

50V

22U

50V

C39

R51

4K99

R50

100U

25V

C36

3660

X578

2U2

63V

C18

TL072

6882

4417

10K

BOT WIP

5B LIN

TOP

R25

36K0

R22

20K0

R16

20K0

470R

R23

470R

R17

3498

470R

R18

R19

3498

C15

27P

TL072

6882

GND

L R

WHT

3460

RED

V07

100N

4K99

R56

4K99

_C22

4K99

R53

R61

R60

TL072

6882

4420

BOT

50K

WIP

BASS

TOP

C14

B LIN

R12

C13

100N

4K7

SEE LAYOUT DOCUMENTATION

2200U

50V

5887

R59

R54

R55

R58

4K99

4420

50K

BOT WIP TOP

B LIN

TREBLE

C32

W11

YEL

GRN

CHASSIS_GND

EFX_SEND

3498

RED

LINE_IN

3450

W12

RED

BLK

W10

BLK

AC_HOT

R49

1K5

J8 3450

Go Go

6408

GRN

LD1

Go Go

50KW 50KB

N GR

WHT

BLACK

RED

BLUE

WHITE

WOOFER

10in #7322 4R

TWEETER

3.75in #7429 4R

SEE LAYOUT DIAGRAM

MULTI VALUE PARTS

M578A - 50KW / M578B - 50KB PRODUCTION NOTES

MODELS:

1. USE RTV ON C32, C33, R43, R44

2. W4 HAS GREEN WIRE FOR N.A. AND NO WIRE FOR S VERSION

3. DO NOT STUFF C37 FOR S VERSION

4. W9 AND W10 HAVE 18AWG BLACK WIRE FOR N.A. AND BLACK

DOUBLE INSUL. FOR S

5. FOR S VERSION, USE T400MA #2462 FUSE

6. BREAK PANEL IN 2 ALONG SCORE LINE WHERE INDICATED

IN THE LAYOUT.

THIS BOARD CONTAINS PARTS

WITH MULTIPLE IDENTITIES --->

COMP#

_C11

_C20

_C21

_C22

_C23

_R29

_R30

_R31

_R32

_X63

_X64

50KW 50KB

M578A M578B

27P 5404

220N 5318

47P 5408

100N 5314

3N3 5428 1N5 5424

NotStuffed

47N 5308

100N 5314

68N 5310

2K7 4864 3K9 4850

10K 4829

0R0 4599

4K7 4827

NotStuffed 2K2 4847

Stuffed NotStuffed

NotStuffed

Stuffed

{MODEL C} {MODEL D}

{BOARD C}

{BOARD D}

LM3876T

"STYLE_P28"

SEE LAYOUT DIAGRAM

MODEL(S):-

PC#

M___ PENDING CHANGES

{MODEL}

PENDING CHANGE

POTENTIOMETERS/SWITCHES AND KNOBS

MODEL(S):5OKB/50KW M578A/M578B {TITLE}

REF

FUNCTION

GAIN-1

TREBLE

BASS

GAIN-2

POT/SW YS#

#4418

#4420

#4417

KNOB

#8641

*PLACE IMPLEMENTED CHANGES INTO BOARD HISTORY

NOTE FOR MARCONI: CHECK N115, N117, N118, N119 MOVEMENT

X578 PCB DATABASE HISTORY

MODEL(S):-

50KB/50KW

DATE

JAN-2000

APR-2000

20-APR-2000

23-NOV-2000

07-FEB-2001

18-APR-2002

08-NOV-2002

10-JUL-2003

2-SEP-2003

22-SEP-2003

25-NOV-2003

11-DEC-2003

9-FEB-2004

MAR-01-2005

24-MAY-2005

07-JUL-2009

09-JUL-2015

5.00

6.00

6.10

6.20

VO7

VER# DESCRIPTION OF CHANGE

1.P0

1.0P2

1.0P3

2.00

PC#____ DERIVED FROM M512

POTS CHANGED TO STYLE 28

GROUNDS UPDATED, RCA JKS WIRES->JMPR

DELETE D11->D14, C12 15P->27P

PC#6248 #3417 BRKTS MOVED DOWN .010

2.10

3.00

4.00

5.00P0

5.00P1

PC#6346 R21,ZD4 MOVED DOWN

PC#6316 50KW C38 150N->220N

NEW PADS FOR FUSEHOLDER

PC#6576 RESIZE TO ALLOW SHEARING

BEFORE ASSEMBLY NEW TAB HOLE SIZE

REV. C27, MOVE F1, ROUTING&DRILL HOLES CHANGED

Moved F1 to give room to W7

Change copper pour by X27 to stop the perception of a short

Fixed position of shear holes

Corrected J7 to be #3523

GT:FIXED AC CE CLEARANCES

PC#6904: ADD TARGETS TO CORNERS OF THE BOARD

ADDED SCORE AND REMOVED SOME ROUTES

Board changed from single to double sided.

ClinchRepeats - [email protected]@6.400

StepAndRepeat - [email protected],[email protected]

BREAK PANEL IN 2 ALONG THIS SCORE LINE BEFORE CLINCHING.

CLINCH

ORIGIN

AlternatePCB2 - M578A

INTO WAVE

V07

C10

100U

16V

4418

10K

BOT

5C R/A

WIP TOP

33U

16V

562R

MC33078P

6840

3498

INSERT

VCD

ORIGIN

3417

W17

50KW

M578A

V07

50KB

M578B

50KW

M578A

V07

50KB

M578B

M578A 50KW

M578B 50KB

_X63 Stuffed

_X64 NotStuffed

Yorkville

C 2015

C12

25V

100U

C28

C31

LM3876T

10K

6755

C34

25V

100U

25V

100U

C35

R26

R45

R46

1K8

C24

10U

16V

BEC

LOC

* *

C29

220N

R40

1/2W

4R7

1/2W

4R7

1/2W

10R

1/2W

10R

5887

2200U

50V

C33

2200U

50V

5887

3417

BLK

W15

W18

RED

W13

R44

22R

5.0W

4709

WHT

W14

SPKR(-)

SPKR(+)

R43

100R

5.0W

4692

TWEET(-)

CHASSIS GND

GRN

C32

W11

YEL

27K

C40

22U

50V

22U

50V

C39

R51

4K99

R50

100U

25V

C36

3660

X578

2U2

63V

C18

TL072

6882

4417

10K

BOT

5B LIN

WIP TOP

R25

36K0

R22

20K0

R23

R16 470R

470R

R17

3498

470R

R18

R19

3498

C15

27P

TL072

6882

GND

L R

WHT 3460 RED

V07

NotStuffed

4K99

R56

4K99

_C22

4K99

R53

R61

R60

TL072

6882

4420

BOT

50K

WIP

BASS

TOP

C14

B LIN

R12

C13

100N

4K7

SEE LAYOUT DOCUMENTATION

GRN

CHASSIS_GND

R59

R54

R55

R58

4K99

4420

50K

BOT WIP TOP

B LIN

TREBLE

EFX_SEND

3498

50KW

RED

LINE_IN

3450

W12

RED

R49

1K5

J8 3450

50KB

C38

6435

22N

275V

BLK

W10

BLK

N GR

C37

WHT

BLK

AC_HOT

6408

GRN

LD1

BLACK

RED

BLUE

WHITE

WOOFER

10in #7322 4R

TWEETER

3.75in #7429 4R

SEE LAYOUT DIAGRAM

MULTI VALUE PARTS

M578A - 50KW / M578B - 50KB PRODUCTION NOTES

MODELS:

1. USE RTV ON C32, C33, R43, R44

2. W4 HAS GREEN WIRE FOR N.A. AND NO WIRE FOR S VERSION

3. DO NOT STUFF C37 FOR S VERSION

4. W9 AND W10 HAVE 18AWG BLACK WIRE FOR N.A. AND BLACK

DOUBLE INSUL. FOR S

5. FOR S VERSION, USE T400MA #2462 FUSE

6. BREAK PANEL IN 2 ALONG SCORE LINE WHERE INDICATED

IN THE LAYOUT.

THIS BOARD CONTAINS PARTS

WITH MULTIPLE IDENTITIES --->

COMP#

_C11

_C20

_C21

_C22

_C23

_R29

_R30

_R31

_R32

_X63

_X64

50KW 50KB

M578A M578B

27P 5404

220N 5318

47P 5408

100N 5314

3N3 5428 1N5 5424

NotStuffed

47N 5308

100N 5314

68N 5310

2K7 4864 3K9 4850

10K 4829

0R0 4599

4K7 4827

NotStuffed 2K2 4847

Stuffed NotStuffed

NotStuffed

Stuffed

{MODEL C} {MODEL D}

{BOARD C}

{BOARD D}

LM3876T

"STYLE_P28"

SEE LAYOUT DIAGRAM

MODEL(S):-

PC#

M___ PENDING CHANGES

{MODEL}

PENDING CHANGE

POTENTIOMETERS/SWITCHES AND KNOBS

MODEL(S):5OKB/50KW M578A/M578B {TITLE}

REF

FUNCTION

GAIN-1

TREBLE

BASS

GAIN-2

POT/SW YS#

#4418

#4420

#4417

KNOB

#8641

*PLACE IMPLEMENTED CHANGES INTO BOARD HISTORY

NOTE FOR MARCONI: CHECK N115, N117, N118, N119 MOVEMENT

X578 PCB DATABASE HISTORY

MODEL(S):-

50KB/50KW

DATE

JAN-2000

APR-2000

20-APR-2000

23-NOV-2000

07-FEB-2001

18-APR-2002

08-NOV-2002

10-JUL-2003

2-SEP-2003

22-SEP-2003

25-NOV-2003

11-DEC-2003

9-FEB-2004

MAR-01-2005

24-MAY-2005

07-JUL-2009

09-JUL-2015

5.00

6.00

6.10

6.20

VO7

VER# DESCRIPTION OF CHANGE

1.P0

1.0P2

1.0P3

2.00

PC#____ DERIVED FROM M512

POTS CHANGED TO STYLE 28

GROUNDS UPDATED, RCA JKS WIRES->JMPR

DELETE D11->D14, C12 15P->27P

PC#6248 #3417 BRKTS MOVED DOWN .010

2.10

3.00

4.00

5.00P0

5.00P1

PC#6346 R21,ZD4 MOVED DOWN

PC#6316 50KW C38 150N->220N

NEW PADS FOR FUSEHOLDER

PC#6576 RESIZE TO ALLOW SHEARING

BEFORE ASSEMBLY NEW TAB HOLE SIZE

REV. C27, MOVE F1, ROUTING&DRILL HOLES CHANGED

Moved F1 to give room to W7

Change copper pour by X27 to stop the perception of a short

Fixed position of shear holes

Corrected J7 to be #3523

GT:FIXED AC CE CLEARANCES

PC#6904: ADD TARGETS TO CORNERS OF THE BOARD

ADDED SCORE AND REMOVED SOME ROUTES

Board changed from single to double sided.

5 0 K B /5 0 K W

E X P O R T A C

W I R I N G

J un 2 7 , 2 0 0 1

1309

# 8 4 8 6

L O C K W A S H E R

C H A S S I S

R E D

YE L

4" BLAC K DBL/INS

Здравствуйте! Я — ИИ-чат-бот, специально обученный помогать вам с Yorkville Sound 50K KW Manuel utilisateur. Я внимательно изучил документ и могу помочь вам найти точную информацию, которая вам нужна, или объяснить её простыми и понятными словами. Если вам нужна помощь с определёнными функциями, шагами устранения неполадок или общими рекомендациями, задавайте свои вопросы. Чем больше деталей вы предоставите о своих запросах или потребностях, тем точнее и эффективнее я смогу вам помочь!