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1

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B

C

C

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Product

 

Date:
Filename:

PCB#

M1238V05sch.sch2002

K4

Tue May 24, 2011

M1238

of

Sheet

Rev:

4

1

V05

Product

 

Date:
Filename:

PCB#

M1238V05sch.sch2002

K4

Tue May 24, 2011

M1238

of

Sheet

Rev:

4

1

V05

1/

4W 10K0

R43

.

1/

4W 22K

R18

.

1/

4W 1K0

R65

MINI

1/

4W

47K

R15

.

4148

D52

1/

4W 2K2

R77

.

1/

4W 2K2

R38

.

4148

D48

1/

2W 22R

R36

.

2

6

W

15:

B

4

6

W

15:

D

1/

4W 22K

R28

.

C20

100V

68N

RAD    .2in

R64

1/4W

.

220R

R62

1/4W

.

10K0

3

6

W15:C

3

6 W16:C

R46

1/4W

.

12R

8

8 W14:H

3

8 W14:C

1

8 W14:A

4

8 W14:D

4.75" 
8r 30WPGM

6

5

1

3

2

4

S

T

R

-

-

-

J1

LEFT 

C21

50V

68N

BEAD

R160

1/4W

.

10K0

R133

1/4W

.

10K0

C22

100V

68N

RAD    .2in

1/

4W 1M

R30

.

BAV21

D4

1/

4W

10K0

R14

.

1/

4W 10K0

R4

.

1/

4W 22K

R57

.

1/

4W

47K

R54

.

BAV21

D8

1N5240BRL 

D7

0W5

10V0

BAV21

D9

Q18
5104

MPSA56

TO92

1/

4W 1M

R32

.

1/

4W 10K0

R33

.

1N5240BRL 

D1

0W5

10V0

BAV21

D2

1/

4W

2K

R167

.

1/

4W

10K0

R123

.

R168

1/4W

.

10K0

R164

1/4W

.

10K0

R58

1/4W

.

2K2

1/

4W 10K0

R40

.

R19

1/4W

.

2K2

MPSA56

Q4
5104

TO92

R182

1/4W

.

2K

1/

4W 10K0

R1

.

R170

1/4W

.

4K3

C87

100V

100P

BEAD

R169

1/4W

.

4K3

C86

100V

100P

BEAD

5104

TO92

Q15

MPSA56

R60

1/4W

.

10K0

R34

1/4W

.

220R

5X7MM  .2in

22U

C13

50V

R25

1/4W

.

220R

5104

TO92

MPSA56

Q3

R21

1/4W

.

10K0

1/

4W

470K

R154

.

4148

D53

R56

1/4W

.

10K0

R68

1/4W

.

33K

R41

1/4W

.

10K0

R2

1/4W

.

10K0

63V

C69

100N

63V

C68

100N

1/

4W 2K49

R153

.

63V

C71

100N

63V

C72

100N

R150

1/4W

.

1K3

R146

1/4W

.

22K

1/

4W 100K

R74

.

50V

C32

680P

1/

4W 100K

R35

.

50V

C15

680P

R23

1/4W

.

10K0

(VCC)

LM13600N

Dual VCA

6745

U3:D

63V

C67

100N

63V

C66

100N

NTC

10K

R134:A

6467

1/

4W 1K8

R52

.

TO92

BC560C

Q17

5102

1/

4W 22K

R42

.

1/

4W

2K2

R27

.

1/

4W 1K8

R13

.

63V

C83

100N

5

6

W15:E

1

6

W15:A

4148

D49

NTC

10K

R135:A

6467

RAD    .2in

C31

4U7

63V

RAD    .2in

68U

C25

25V

1/

4W 3K3

R44

.

RAD    .2in

C14

4U7

63V

1/

4W

680R

R11

.

RAD    .2in

68U

C8

25V

5

6 W16:E

1

6 W16:A

R141

1/4W

MINI

20K0

1/

4W 470K

R138

.

1/

4W 10K0

R139

.

BD139

TO126

6774

Q21

{Function}

1/

4W 270R

R61

.

50V

C18

1N

BD139

TO126

6774

Q10

{Function}

1/

4W

15K

R10

.

1/

4W 270R

R22

.

3

W2:C 4

R142

1/4W

.

390K

C74

100V

47P

BEAD

R76

1/4W

.

12R

50V

C23

100N

R37

1/4W

.

12R

50V

C6

100N

R7

1/4W

.

12R

2

W5:B

4

1/

2W 22R

R75

.

5.

0W 0R27

R55

.

BRN

W6

SPKR/ R-MID

W3

SPKR/L-MID

_BLU

+

MID

SP4

+

MID

SP2

6

5

1

3

4

2

S

T

R

-

-

-

J2

RIGHT 

R157

1/4W

.

10K0

R161

1/4W

.

10K0

1/

4W 1M

R69

.

TO92

MPSA42

Q19
5113

C5

100V

68N

RAD    .2in

1/

4W

10K0

R53

.

1/

4W 1M

R71

.

1/

4W 10K0

R72

.

4148

D11

M

LIN

P2:A

4032

10K

CH-4 GAIN 

BAV21

D3

R184

1/4W

MINI

1K0

2

6

W

16:

B

1/

4W

2K

R166

.

1/

4W

10K0

R122

.

4

6

W

16:

D

1/

4W 22K

R67

.

C3

100V

68N

RAD    .2in

1/

4W 1K0

R26

MINI

R183

1/4W

.

2K

U1:B

MC33079P

R73

1/4W

.

220R

1/

4W

47K

R155

.

Q38
5113

MPSA42

TO92

1/

4W 1M

R147

.

1/

4W

2K2

R66

.

Q36

5104

TO92

MPSA56

1/

4W 4K7

R136

.

1/

4W 22K

R3

.

TO92

BC560C

Q6

5102

1/

4W 20K0

R137

MINI

1/

4W 3K3

R5

.

R6

1/4W

.

3K3

1/

4W

680R

R50

.

R45

1/4W

.

3K3

1/

4W 47R

R78

.

RAD    .2in

2U2

C73

63V

1/

4W 3K3

R140

.

50V

C1

1N

1/

4W 47R

R39

.

1/

4W

15K

R49

.

50V

C34

1N

50V

C17

1N

400V

C33

10N

MJF6388

6815

Q35

T221D

400V

C16

10N

100V

C91

4U7

SP3

HORN

100V

C90

4U7

M

LIN

P2:B

4032

10K

CH-4 GAIN 

U3:E

LOW-FREQ--AMP[B4]

C19

100V

68N

RAD    .2in

R17

1/4W

.

10K0

R29

1/4W

.

33K

W51:A 2

TP4

R63

1/4W

.

47K

TP3

TP1

7

8 W14:G

1

4 W47:A

1

W5:A

4

C80

100V

100P

BEAD

R163

1/4W

MINI

20K0

1/

4W 4K3

R121

.

LOW-FREQ--AMP[B4]

C79

100V

100P

BEAD

R159

1/4W

MINI

20K0

R165

1/4W

.

10K0

R162

1/4W

MINI

20K0

4X7MM  .2in

C81

4U7

63V

U8:A

TL072

R158

1/4W

MINI

20K0

LOW-FREQ--AMP[B4]

1N5240BRL 

D12

0W5

10V0

5X7MM  .2in

22U

C29

50V

TO92

MPSA56

Q14
5104

R59

1/4W

.

4K7

U1:A

MC33079P

4148

D5

1N5240BRL 

D6

0W5

10V0

R20

1/4W

.

4K7

1/

4W 10K0

R9

.

R181

1/4W

MINI

1K0

R151

1/4W

.

82K5

R149

1/4W

.

10K0

R152

1/4W

.

82K5

TO92

5113

Q37

MPSA42

NTC

10K

R156:A

6467

TO92

Q20
5119

2N5638

TO92

BC560C

Q16
5102

U1:C

MC33079P

POWER-SUPPLY[K2]
LOW-FREQ--AMP[D8]

TO92

Q9
5119

2N5638

U3:A

LM13600N

R8

1/4W

.

22M

(VCC)

LM13600N

Dual VCA

6745

U3:C

63V

C84

100N

U2:B

NE5532N

W51:B 2

W49:A 2

W49:B 2

4148

D50

R144

1/4W

FLMP

11R3
R145

1/4W

FLMP

11R3

TIP147

6903

Q22

TO218

TO92

BC550C

Q13
5101

CUT OUT R49, R51
UNTIL 2 TO 4 mV
IS ACROSS TP3 AND
TP4 WITH AMP COLD

100V

C12

15P

TP2

TIP147

6903

Q11

TO218

R24

1/4W

.

47K

TO92

BC550C

Q2
5101

1/

4W

10K0

R12

.

RAD    .2in

22U

C7

50V

5.

0W

0R27

R16

.

FAN1

10X13MM   

C85

10U

160V

5" 8R
30WPGM

4

W5:D

4

1

W2:A

4

4.75" 
8r 30WPGM

5" 8R
30WPGM

2

8 W14:B

4

4

W47:D

4

4

W2:D

1/

4W 4K3

R115

.

U8:B

TL072

4X7MM  .2in

C82

4U7

63V

R171

1/4W

.

10K0

BAV21

D10

16V

C28

10U

C2

100V

68N

RAD    .2in

TO92

MPSA42

Q8
5113

C4

100V

68N

RAD    .2in

U7:C

MC33079P

Q7
5104

MPSA56

TO92

1/

4W 10K0

R48

.

16V

C11

10U

1/

4W 100K

R148

.

U3:B

LM13600N

Q39
5102

BC560C

TO92

TO92

BC560C

Q5
5102

R47

1/4W

.

22M

U7:B

MC33079P

C27

100V

10P

BEAD

100V

C30

15P

5.

0W

0R27

R70

.

U2:A

NE5532N

4148

D51

R143

1/4W

MINI

1K0

CUT OUT R10 , R12 
UNTIL 2 TO 4 mV
IS ACROSS TP1 AND
TP2 WITH AMP COLD

C10

100V

10P

BEAD

TIP142

6902

Q1

TO218

5.

0W

0R27

R31

.

1/

4W

10K0

R51

.

TIP142

6902

Q12

TO218

RAD    .2in

22U

C24

50V

FAN2

SP1

HORN

4

V+

11

V-

U1:E

4

V+

11

V-

U7:E

8

V+

4

V-

U2:C

8

V+

4

V-

U8:C

GND=GROUND
AG=AMP GROUND
SG=SIGNAL GROUND

U7:A

MC33079P

U1:D

MC33079P

U7:D

MC33079P

Summary of Contents for K4 YS1045

Page 1: ...A Voice 716 297 2920 Fax 716 297 3689 WORLD HEADQUARTERS WEB ACCESS http www yorkville com CANADA Yorkville Sound 550 Granite Court Pickering Ontario L1W 3Y8 CANADA Voice 905 837 8481 Fax 905 837 8746 Quality and Innovation Since 1963 Printed in Canada SERVICE MANUAL K4 MODEL TYPE YS1045 ...

Page 2: ...ed or objects have fallen into the apparatus the apparatus has been exposed to rain or moisture does not operate normally or has been dropped AVIS AFIN DE REDUIRE LES RISQUE DE CHOC ELECTRIQUE N ENLEVEZ PAS LE COUVERT OU LE PANNEAU ARRIERE NE CONTIENT AUCUNE PIECE REPARABLE PAR L UTILISATEUR CONSULTEZ UN TECHNICIEN QUALIFIE POUR L ENTRETIENT CE PRODUIT EST POUR L USAGE À L INTÉREUR SEULEMENT Instr...

Page 3: ...5 0 5 5 10 10 15 15 0 5 5 10 10 Voicing Solid State Twin Tube Left Mono Preamp Ch 1 Input 1 Right Left Mono Ch 1 Input 2 Right Left Mono Ch 2 Input Right Left Mono Ch 3 Input Ch 3 Input Right Clip Clip Clip Left Right Ch 2 Input Balanced Lead CH 1 CH 2 CH 3 Hard Soft High Low 15 15 0 5 5 10 10 15 15 0 5 5 10 10 15 15 0 5 5 10 10 Bypass 1 2 3 4 Out In Lead Level OD Trim Bass Gain Mid Treble Bass Mi...

Page 4: ... 2 inputs Stereo pair 1 4 inch TRS mono XLR Channel 2 controls Gain 3 band EQ Channel 3 inputs Stereo pair of 1 4 inch TRS stereo RCA Channel 3 controls Gain Channel 4 inputs Stereo pair of balanced 1 4 inch TRS Channel 4 controls Gain Master Volume Control Yes Input Sensitivity mV Ch 1 2 500mV Ch 3 250mV Line Out type configuration Stereo XLR Post EQ Pre Master Ground Lift Line Out Sensitivity Vr...

Page 5: ...250 100R 5 T R RES 4 6110 W250 1K0 1 MINI MF T R RES 25 3810 4 NYLON CABLE TIE 9 4852 W250 100R 5 T R RES 5 6116 W250 10K0 1 MINI MF T R RES 54 3826 STRAIN RELIEF HEYCO 1150 1 4857 W250 220R 5 T R RES 4 6123 W250 20K0 1 MINI MF T R RES 7 3851 1 2 PLASTIC SPACER 1 4857 W250 220R 5 T R RES 4 6123 W250 20K0 1 MINI MF T R RES 28 3903 4 CIR PCB CONN BOTTOM 156 2 4859 W250 150R 5 T R RES 8 6128 W250 4K9...

Page 6: ... 3 Line Out L L Bus GND Lift R Bus Gain Master L Master R HP L Tweeter Woofer R Tweeter L Mid R Mid HP L Amp LF Amp R Amp Ch 4 Gain L Ch 4 Gain L Gain L Gain R 1 2 3 4 5 EQ EQ L EQ R Voicing Select R Voicing Select L 1 2 3 4 5 L Bus R Bus L Bus R Bus Channel 4 Monitor Channel Sub Out Headphone T Left R Right S Gnd Solid State Tube Gain Trim L R Line Out R GND Lift Solid State Tube Gain Trim R Lead...

Page 7: ...een changed Continue pushing the chassis forward until it is out of the cabinet If the chassis snags on the cabinet vinyl reverse the process and push it out the back of the cabinet You may find it worthwhile to insert thin strips of plastic as shims between the chassis and cabinet down the sides to reduce the chance of snagging 5 Once the chassis is removed using a small Phillips screwdriver remo...

Page 8: ... Continuez ensuite de pousser le châssis vers l avant jusqu à ce qu il soit sortie de l enceinte Si en le sortant par l avant le châssis se trouve coincé sur le vinyle de l enceinte renversez le processus et poussez le vers l arrière de l enceinte Vous trouverez peut être préférable d insérer de minces bandes de plastique comme cale entre le châssis et le cabinet pour réduire les chances d accroch...

Page 9: ...ng dampening foam inside to help reduce a great deal of rattling Special foam and rubber washers are also used for mounting the chassis to the cabinet The top 5 chassis mounting bolts are not fully tightened this helps prevent the transference of the sound energy to the chassis from the speakers Over tightening the top 5 bolts may result in rattle and buzz If chassis is removed and replaced we rec...

Page 10: ... Black 15 inch Orange 19 inch Brown 18 inch Red 18 inch White RT V RED WHITE RT V BLACK WHITE BROWN C93 5933 4U7 100V YELLOW ORANGE 100V 4U7 K4 FINISHING Wiring Diagram FINISHING K4 speaker wiring 00 1v1 pdf 7405 7405 7286 7286 7388 L E F T T W EETER L E F T M ID RIGH T M I D RIGH T T W E E T E R WOOFER ...

Page 11: ... CH 4 GAIN BAV21 D3 R184 1 4W MINI 1K0 2 6 W16 B 1 4W 2K R166 1 4W 10K0 R122 4 6 W16 D 1 4W 22K R67 C3 100V 68N RAD 2in 1 4W 1K0 R26 MINI R183 1 4W 2K U1 B MC33079P R73 1 4W 220R 1 4W 47K R155 Q38 5113 MPSA42 TO92 1 4W 1M R147 1 4W 2K2 R66 Q36 5104 TO92 MPSA56 1 4W 4K7 R136 1 4W 22K R3 TO92 BC560C Q6 5102 1 4W 20K0 R137 MINI 1 4W 3K3 R5 R6 1 4W 3K3 1 4W 680R R50 R45 1 4W 3K3 1 4W 47R R78 RAD 2in 2...

Page 12: ...0N 4 V 8 V U14 C R100 1 4W 10K0 C41 50V 470N BEAD R175 1 4W 4K99 U15 E VCC LM13600N Dual VCA 6745 U15 D R87 1 4W 2K87 4148 D27 R187 1 4W 470R R186 1 4W 220K 1 4W 4K12 R119 Q32 5102 BC560C TO92 1 4W 4K12 R80 R189 1 4W MINI 20K0 1 4W 150R R120 1 4W 150R R81 6788 Q33 TO126 BD238 5 0W 0R18 R101 R203 1 4W 200K R193 1 4W 15K R208 1 4W 15K 1 4W 49K9 R205 R109 1 2W 150R 50V C44 68N 50V C36 68N R82 1 2W 15...

Page 13: ...PSA13 2N5401 B E TO 92 BC560C C BC550C 3392 W17 SW BLK R128 1 4W 1M 3392 W21 SW WHT 3 2 1 3575 2 6 W36 B 1 6 W36 A 6 6 W36 F 5 6 W36 E 4148 D36 1 4W 5K6 R126 1N5251BRL D33 0W5 22V0 6840_PC 6882_PC 2 1 4 3 _W1 18X35MM 3300U C62 50V 18X35MM 3300U C63 50V 18X35MM 3300U C59 50V 4007 D34 16X36MM 220U C55 160V 3 2 1 3575 R127 1 0W FLMP 1R IN REF OUT MC7915CT 6871 U11 IN REF OUT MC7815CT 6872 U9 W20 CHAS...

Page 14: ...82K5 2K05 275V 22N 470N 100N 47K 22R 1 2W 2N5638 4007 4148 MPSA42 160V 220U 33P 33P 1U 10K0 1U 100N 1U 1R 1 0W 50V 22U 50V 22U 10K0 MPSA56 MPSA56 160V 10U 1M 2U2 63V 2K2 47K 400V 10N 2K 100N 100N TL072 4U7 63V 68U 25V 680P 47K BC550C BC560C 50V 3300U 50V 3300U 6A2 6A2 6A2 5K6 BC550C 2N5638 22M BAV21 TO220 MC7815CT 220U 160V TO220 MC7815CT Yellow TL072 LIN 10K TO218 TIP142 TO218 TIP142 B od y M J 2...

Page 15: ......

Page 16: ...SEE LAYOUT DIAGRAM 8841 3977 Yellow spring 8841 ...

Page 17: ...220P 100V C2 220P C53 100V 22N 63V C180 100N 8 V 4 V U6 C V1 A 2X_TRIODE_HCT 63V C188 100N R36 1 4W 1K R130 1 4W MINI 4K99 1 4W 33K R52 8 V 4 V U25 C 63V C25 100N R133 1 4W 1K 63V C183 100N 1 4W 100K R209 7 8 13 14 6 N P MC14007 U7 B 1 4W 113K R23 10X13MM 10U C15 160V 5X7MM 2in 22U C23 50V Tie net Name Copper Tie Here 50V C193 100N R164 1 4W 1M D B LIN P1 A 4477 100K CH1 GAIN R112 1 4W 3K 100V C83...

Page 18: ...K R183 RAD 2in C117 4U7 63V 1 4W 100K R180 1 4W 100K R181 STUDIO C60 63V 1U 1 4W 2K49 R205 R101 1 4W 220R R297 1 4W 2K R83 1 4W 1K 10X13MM 10U C66 160V 1 4W 20K0 R102 MINI 50V C192 100N R103 1 4W 10K 100V C7 220P 100V C6 220P C63 100V 22N 1 4W 100K R208 V2 A 2X_TRIODE_HCT R153 1 4W MINI 4K99 R37 1 4W 1K 1 4W 33K R90 R154 1 4W 1K 63V C43 100N 10X13MM 10U C16 160V 63V C191 100N R186 1 4W 1M 63V C81 ...

Page 19: ... 8 V 4 V U24 C 63V C13 100N 8 V 4 V U15 C R226 1 4W MINI 20K0 4 V 11 V U21 E R231 1 4W 49K9 400V C133 1N 400V C75 1N 4 V 11 V U19 E 63V C173 100N 63V C171 100N 8 V 4 V U23 C 4148 D28 3 6 W11 C R246 1 4W MINI 180K R317 1 4W 1K 8X7MM 2in 100U C158 16V RED LD4 CLIP U23 B MC33078P U23 A MC33078P R282 1 4W 0 1 681R0 RAD 2in C151 4U7 63V C145 50V 33N R287 1 4W 0 1 681R0 C140 50V 680P 1 4W20K0 R224 MINI ...

Page 20: ... 100K 100N 10K 100N 2K 4K99 4K7 100K 1K 2K 10K 100N 249R 100N 4148 4148 100N 4148 1K 33N 63V 4U7 4K7 3K 2U2 63V 100N 100N 220P 330N 2U2 63V 113K 2U2 63V 1U 160V 10U 50V 22U 2K21 50V 22U 100N 100N 180K 10U 16V 100K 100N 39N 150N 2K 4N7 NE5532N 1U 4K99 100U 16V 100N 4U7 63V 20K0 4K7 10K 10K0 100N 3K74 MC33078P 4148 NE5532N 4148 4148 10U 63V 33K 10U 63V BLK MC33079P 160V 10U 50V 22U 50V 22U 18R 1 2W ...

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Page 23: ...N R T V R T V GUIDE ETCH 1 2 3 4 PCB CONN 4 CIR BOTTOM 156 1 2 3 4 PCB CONN 4 CIR BOTTOM 156 3903 3538 3903 100V 4U7 100V 4U7 K4 V100P0 K4 M1240 M1240 V100P0 W30 BLK AG W41 RED WOOFER W35 L MID WHT W37 R MID BRN W2 W47 W1 L TWEETER YEL W4 R TWEETER ORN W40 WHT WOOFER C90 C91 W5 ...

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