M613 REVISION HISTORY

MODEL(S):- YCV50

# DATE

VER# DESCRIPTION OF CHANGE

1SEPT-23-2004 1.00 GT:DERIVED FROM M581 V11.00

2OCT-15-2004 2.00 GT: PC#6748 R101 -> 2K2 (4847), R55 -> 4K7 (4827), D24 ->

3 .

.

20V0 (6465), ADD R104: 150K/2W (4790)

4 .

.

Increased route cutaway on preamp board

5 .

.

R53->3K9 (4850), R62->270K (4879), C19->100N (5865)

6

DEC-02-2004

.

GT:PC#6776 MOVED TOP MULTIPLE TO ADD ZIPPER

7

MAR-04-2005

2.10

GT:PC#6836:R78 27K #4833 --> 18K7 #5021 for bias

8

APR-26-2005

2.20

GT:PC#6865:STDBY FIX, ADDED #4599 x 3 AND #5299 x 1

9 .

.

GT:PC#6889: X61 #4599 --> 1K #4823 RESISTOR

10

MAY-27-2005

3.00

GT:PC#6886:ADD #4520 TRIMPOT 10K, R78->#4876 16R

11 .

.

AH: Moved some parts, Autoinsert needs more space

12 .

.

PC#6937, MODIFY TUBE SOCKET ROUTING AND DRILLING

13 .

.

PC#6965, MOVE ARC TRACE AWAY FROM TUBES

 

1 .

.

PC#6967, INCREASE CLEARANCS NEAR OUTPUT TUBES

2

NOV-25-2005

.

PC#7041:GT:UPDATED BIAS NOTE FOR R91&R92

3

DEC-14-2005

3.01

PC#7053:GT:R53 4850 3K9->4864 2K7, NEW BIAS FOR CE

4 .

4.00

BALVINDER CORRECTED TESTNODE PADS

5 .

.

SPACED W8 TRACE 6MM FROM SCREW HOLE

6 .

.

UPDATED K1,K2 FOR CLINCH

7

MAY-17-2006

.

PC#7125:GT:CHANGE #3914 RCA JACK TO #6541.

8 .

.

PC#7091:ENLARGE HOLE SIZE FOR #3522 KINK LEADS (S3

9 .

.

TO S6)

SEE LAYOUT DIAGRAM

 

 

 

 

M581 DRILL HISTORY

MODEL(S):-

YCV50

 

 

#

DATE

VER#

 

DESCRIPTION OF CHANGE

1

D

V

 

N

2

D

V

 

N

3

D

V

 

N

4

D

V

 

N

5

D

V

 

N

6

D

V

 

N

 

 

 

 

M581 PENDING CHANGES

MODEL(S):-

YCV50

 

 

#

PC#

PENDING CHANGE

1

PC

X

 

 

2

PC

X

 

 

3

PC

X

 

 

4

PC

X

 

 

5

PC

X

 

 

6

PC

X

 

 

*PLACE IMPLEMENTED CHANGES INTO BOARD HISTORY

 

 

 

 

 

 

PRODUCTION NOTES

1. RTV MUST BE ADDED TO THE FOLLOWING CAPS

5. R63 #6467: APPLY THERMAL

C1,C16,C19,C17,C70 BETWEEN C84,C28,C60,C15

COMPOUND GENEROUSLY

BETWEEN C49,C50, ADDED TO C15,C7,C8,C3,C9

BETWEEN PART AND HEATSINK

C56,C14,C6,C10,C4,C2 AND C12

6. NA: BIAS 350mV ACROSS R91

2. C53 IS 22N FOR BOTH NORTH AMERICA AND CE

AND 350mV ACROSS R92

3. C3,C7,C6 MUST BE LOW PROFILE PT#5631

CE: BIAS 300mV ACROSS R91

4. C8,C9 MUST BE LOW PROFILE PT#5879

AND 300mV ACROSS R92

10 D

V

N

11 D

V

N

12 D

V

N

13 D

V

N

1

D

V

N

2

D

V

N

3

D

V

N

4

D

V

N

5

D

V

N

6

D

V

N

7

D

V

N

8

D

V

N

9

D

V

N

10

D

V

N

11

D

V

N

12

D

V

N

13

D

V

N

 

 

M613 POT LIST

 

MODEL(S):-

YCV50 TUBE AMP

 

REF

FUNCTION

PART#

KNOB

AS OF

P1

DRIVE

 

#4425

#8430

11/00

P2

TREBLE

 

#4424

#8430

11/00

P3

BASS

 

#4425

#8430

11/00

P4

MID

 

#4423

#8430

11/00

P5

MASTER

 

#4425

#8430

11/00

P6

MID

 

#4423

#8430

11/00

P7

BASS

 

#4425

#8430

11/00

P8

TREBLE

 

#4424

#8430

11/00

P9

CLEAN VOLUME

#4425

#8430

11/00

P10

MASTER VOLUME

#4423

#8430

23/04

P11

REVERB

 

#4424

#8430

11/00

.

.

 

.

.

.

"STYLE_P32"

3796 on this device only.

Z352

LEAD/PIN REFERENCE

IRF830

MJE340

MPSA56

 

COM1 COM2

 

 

 

MPSA06

BC550C

NC1

NC2

 

 

NO1

NO2

 

 

 

 

 

4N35

 

 

NE5532N

 

 

 

C B E

G2

G1

 

H

 

H

3700_DRW

G D S

E C B

E B C

 

 

5

1P

4

5

 

 

4

6

TO-220

TO-126

TO-92

TO-92

P 3

6

NC

2K 3

 

 

7 1G

 

 

 

 

H 2

7

H

2G 2

 

 

8 1K

 

 

 

 

1

8 K

 

2P

1

 

9

 

 

 

 

NC

G3

 

 

 

HT

Lots of goop

2 of 8701

on the thermistor.

2 of 3850

2 of 8829

-to hold z352 in place

PCB

2 of 8741

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Yorkville Sound YCV50, YS1003 service manual Production Notes
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