YORKVILLE ap4020 ys4020 Service Manual Download Page 18

SH

EAR

SH

EAR

SH
EAR

SH
EAR

VCD

CLINCH

ORIGIN

LONG AXIS

SHORT AXIS

INSERT

ORIGIN

10V00

Pcb Mech M1126

BlankSize - 14750x10850

TAB

NORMAL

SOCKET

SOCKET WITH DIRECTION

NORMAL LARGE

SOCKET UPSIDE DOWN

14"

4"

19"

BLK

BLK

2.5"

BLK 18"

YELL

10V00

RED 13"

RED 2.5"

BLK 3.5"

Top Assy

YELL

M1126

DO NOT STUFF WIRES OR SPEAKON
JACKS FOR SERVICE BOARDS.

SEE LAYOUT DOCUMENTATION

VT

R

V

T

R

VT

R

VT

R

VT

R

V

T

R

V

T

R

VT

R

VT

R

VT

R

V

T

R

V

T

R

E

B

C

E

B

C

V

T

R

GUIDE

ETCH

1-

2+

1+

2+

1+

2-

2-

NL4MP-1

1-

SPEAKON 4C

V

T

R

GUIDE

ETCH

V

T

R

GUIDE

ETCH

V

T

R

GUIDE

ETCH

1-

2+

1+

2+

1+

2-

2-

NL4MP-1

1-

SPEAKON 4C

Function

BIAS TRIM

Function

Function

Function

3676

6444

6934

6934

6880

6933

6934

6934

6934

5895

5834

6934

5882

5882

3628

5895

3820

6934

6880

6752

6934

6934

6934

5895

5895

5895

5895

3508

5895

3628

5895

10R

7K5

39K

4148

4N7

1K

1K

39R

2N2

4148

1K5

3K3

4148

39R0

4148

4007

4148

4148

BC550C

4K7

4148

151R

10K0

10K0

6N8

1N

22N

1R

1.0W

4148

1R

1.0W

39R

220R0

68R

4V7

100K

620R

2N2

17K8

BC550C

2K

39R0

1K

2N2

39R

4148

39R0

470P

3V0

10R

39R0

68K

13K

1U

63V

150R

12K

249R

18K

4148

4K7

16V0

12V0

3K

150R

470R

470R

4148

1K

2R2

470R

249R

39R

2R2

39R0

2R2

330R

22U

50V

10P

200R

68K

MAC224-

4

MR854 

33K

10U

16V

7K5

MR854 

2N5401

10P

4148

4K7

4K7

1K5

2N5551

10R

10K

4U7

63V

AS35F

N

4148

39R0

180K

4N35

220R

1R 1/2W

22K

TO220

{Watts}

MTP23P06

2N6517

220K

MJE350

470R

1N

MR854 

330U

25V

22U

50V

4148

151R

MJE340

4148

BAV21

MR854 

1N5

22N

270R

270R

MR854 

BC550C

BC560C

6800U 

63V

10N

10R

39K

22U

50V

MR854 

BC560C

4148

3K

160V

10U

220R

MJ

E350

BC560C

22N

MJE340

101R0

150K 2.0W

4U7

63V

220N 250V

220N 250V

1.0W 1K8

5.0W

1K5

25V

330U

10K

MJ

E350

220R

3V0

BAV21

16V0

4007

10K0

2N2

2K2

3K

220K

5.0W

0R1

5.0W

0R1

200R

1K

12K

BC560C

22R

22N

22K

2R2

BC560C

10K

0R47

1.0W

220R0

4K7

5.0W

0R15

5.0W

0R15

5.0W

1K5

2K

101R0

43K

200R

6800U 

63V

4UH

10K

1/2W

1/2W

10K

10K

1/2W

MBS4992

10K

1/2W

MR854 

2K

39R0

4148

47K

3K3

180K

4N35

1R 1/2W

33V0

TO220

{Watts}

IRF630NPBF

MR854 

MR854 

MR854 

14V0

BC550C

13K

22U

50V

6800U 

63V

63V

6800U 

6800U 

63V

6800U 

63V

MJ21195

5.0W

0R1

5.0W

0R1

MJ21195

MJ21196

4148

160V 10U

MJE340

BC550C

10U 63V

16V0

6800U 

63V

5.0W

0R1

MJ21195

MJ21195

MJ21196

5.0W

0R1

25V

330U

BC550C

22N

MJ21196

MJ21195

MJ21195

Body

MJ21196

MJ21196

MJ21196

MJL3281A

MJL1302A

3R9

2.0W

63V

6800U 

MJ21196

MJ21195

MJ21195

MJ21196

5R6

5.

0W

B

A

10V00

BRIDGE

10V00

AP-4020

M1126

R65

R39A

R42A

D13A

C9

R45A

R44A

R31

C10

D17A

R51A

TP6

R69A

X1

X4

D22A

R61A

X2

D21A

D30

D23A

X19

X35

X12

X13

D7

X14

Q8

R42

D5

R17

R18

TP5

R6

X8

C2

X15

C34

X33

C13

R49

D4

R33

R14

R51

R2

ZD1

2

X6

R71

R

30

C20A

R56A

Q

17A

R53A

R32

R46

C15

R47

D19A

R63A

X25

C16

ZD1

0

R66A

R48

R36

X11

R35A

X22

X29

C8

R15

R16

R19

R70

D3

R23

ZD7

X23

ZD4

R20

R7

R26

R87

D9

X32

R40

R27

R43

R9

X16

R12

X17

R4

R1

R3

X10

R74

C18A

EY10

C23A

R84

R39

X18

X24

Q30

W4

OUTPUT  -

D13

R64

C21

W5

X28

R41A

W9

WHT 7"

-55V

X3

D20

TP10

X31

Q13A

C22A

D14A

R50A

R46A

R47A

Q12A

R65A

R70A

C26A

X9

Q31

TP5A

D20A

R62A

R89

U1

R81

R44

R37

Q12

X20

TP7

Q7

R25

Q41

R86

C33

D18

EY1

BLK

EY5

RED

EY2

RED

C7

C3

D2

TP4

R5

Q4

0

X7

EY7

YELL

EY4

YELL

EY8

BLK

EY3

BLK

D1

D10

D22

C1

TP8

C30

R34

R50

TP1

TP9

D16

Q1

Q2

W6

RED 12"

+100V

X5

C23

W8

GND

BLK 8"

C19

R59A

R38A

C19A

D21

Q

14A

D15A

R43A

C28A

R40A

Q15A

WC7

YELL

Q

21A

XC

38

H3

Q16A

R64A

R60A

C25A

C14

C11

R72

R45

C29A

R67A

Q19A

H1

R80

ZD1

1

D11

ZD9

D31

R55A

C4

R21

R22

R24

X30

R60

R59

R82

X26

EY6

BLK

R35

R8

Q3

XZ

D

3

R11

C12

R38

R41

Q10

RT1

R85

R55

R10

R53

R52

R29

R73

J1

R57A

X21

W11

BLUE

R13

R83

C27

L1

R69

R68

R66

Q29

R67

D17

R49A

R58A

D18A

R205

R68A

R88

U2

R28

ZD13

Q11

D19

D15

D14

EY9

YELL

X27

ZD5

M1126          1/2
AP4020

Q9

R40B

C5

W7

YELL 10"

+55V

LOC

BEC

C22

C24

C29

C28

Q23

R56

R57

Q24

Q16

D16A

C27A

H4

Q18A

H2

Q20A

W1

W10

-100V

BLUE 6"

C32

ZD8

C25

R61

Q27

Q28

Q18

R58

AP4020

M1126 2/2

C6

Q4

C31

Q14

Q21

Q22

Q15

Q17

J2

Q13

Q5

Q6

R62

C26

Q20

Q25

Q26

Q19

R63

Summary of Contents for ap4020 ys4020

Page 1: ...ayout 4 Service Kit M1146 m1126 5 Power Amp Module AP4020 U S A Yorkville Sound Inc 4625 Witmer Industrial Estate Niagara Falls New York 14305 USA Voice 716 297 2920 Fax 716 297 3689 WORLD HEADQUARTERS 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 WEB www yorkville com MODEL TYPE YS4...

Page 2: ...lacement of the obsolete outlet The AC supply cord should be routed so that it is unlikely that it will be damaged If the AC supply cord is damaged DO NOT OPERATE THE UNIT Unplug this apparatus during lightning storms or when unused for long periods of time Service The unit should be serviced only by qualified service personnel AVIS AFIN DE REDUIRE LES RISQUE DE CHOC ELECTRIQUE N ENLEVEZ PAS LE CO...

Page 3: ...6 8701 4 40 KEPS NUT ZINC 20 4832 1 4W 22K 5 T R RES 6 7004 2SA2121 0 TO3P PNP TRAN TK 2 8793 4 40 HEX NUT ZINC 3 6118 1 4W 22K 5 MINI T R RES 1 7005 2SC5949 0 TO3 NPN TRANSISTOR TK 2 8760 6 32 KEPS NUT TIN PLATED 64 4833 1 4W 27K 5 T R RES 1 6745 LM13600N IC XCONDUCTANCE AMP 2 8800 6 32 KEPS NUT ZINC 4 4840 1 4W 33K 5 T R RES 3 6840 MC33078P IC DUAL OP AMP 5 8854 6 32 X 1 4 0 D HEX NUT ZINC CLEAR...

Page 4: ...iting the audio signal at U2 The charging attack and discharging release times of the limiter are 80mS and 3 5 seconds respectively Resistors R50 and R7 provide the charging path and resistor R51 provides the dis charge path The limiter can be defeated by placing the limiter switch S2 in the in position which disconnects Q5 and the charging discharging circuitry from V The activity LED circuit con...

Page 5: ...ction of D19A D20A and D23A The signal at the junction of R61A and R62A drives the succeeding current amplifier Current Amplifier Section The current amplifier receives a high voltage audio signal from the voltage amplifier and provides the current drive necessary to drive speaker cabinets The current amplifier is a two tier complimentary output driver design controlled by a complimentary darlingt...

Page 6: ...uced to about 6 volts measured dri ving an 8 ohm load Zener ZD8 protects the gate source junction of Q11 and also pro vides a supply current path through R29 for the floating battery NOTE The Power supply voltages given are those when the amplifier is not driving a speaker load This will allow yo to check the tier switching with the cover of the amplifi er off and the amplifier therefore running c...

Page 7: ... occurs With the voltage amplifiers now disabled there is no signal driving the output transistors Q13 to Q28 The current limit circuit protecting the output transistors Q13 to Q28 turns off and D204 and or D205 are not forward biased and Q202 turns off Through Q203 and Q201 the relay is turned back on and the voltage amplifiers are now active again dri ving the output transistors If current limit...

Page 8: ...n cables have been cut or pinched through their insulation If the fan is running at full speed at power up this usually indicates a problem with the fan circuitry on the M1127 board but it can also be caused by M1126 cir cuit problems A damaged AS35 temperature sensor located under the M1126 heatsinks can cause erratic fan behavior No output on either or both channels could be caused by intermitte...

Page 9: ...2 4390 10K Channel A R33 1 4W MINI 10K R48 1 4W MINI 10K R30 1 4W MINI 1K TO92 BC560C Q4 5102 R52 1 4W MINI 1K 1 4W 22M R65 1 4W 22M R15 R17 1 4W MINI 4K7 R61 1 8W FLMP 249R 100V C7 100N 100V C6 100N R27 1 4W MINI 47K R136 1 4W 1K2 C2 100V 220P R5 1 4W MINI 8M2 R4 1 4W MINI 470K 1N5225B 3V0 ZD3 0W5 C18 100V 47P C21 63V 220N R41 1 4W MINI 1K R39 1 4W 15K R44 1 4W MINI 1K RED LD6 L Clip 5906 BC560C ...

Page 10: ...K LM13600N 4K7 RED 100N 78K7 14K7 249R 249R 47K 62K 4148 620R 249R 14K7 220R 470R 220P 15K 220P 100K 47K 249R 47P 82K 1K2 BC560C 220R 249R GRN 10K 15K 15K BC560C 22M MPSA63 LM13600N 10K AUD 10K AUD 21in 14C LCLP RCLP LVGND RSIG RREF LREF BRPRTCT ACT RREF LREF V V RSPRE RSIG LIMABLE AP4020 4040 6V00 LSPOST PRTCT V V LSPRE RSPOST M1128 LSPOST R17 R8 X17 R37 X22 X19 R18 R25 LD6 R28 C127 R19 C37 R55 C...

Page 11: ...RIPTION OF CHANGE M1128 DRILL HISTORY AP 4020 3 5 4 2 1 DATE MODEL S VER DESCRIPTION OF CHANGE M1128 PCB_DATABASE_HISTORY AP 4020 OCT 97 1 00 FIRST PRODUCTION APR 17 98 2 00 5664 RIBBON CABLE CONNECTIONS CHANGED FOR PROTECT CIRCUIT DEC 09 98 3 00 PC 5736 TRACES CHANGED POT SUPPORT SCREWS ADDED ...

Page 12: ... 100V S1 B FILTER SW C33 68N 100V C34 68N 100V 1 4W R23 0 1 9K76 C9 220P 100V 4148 D7 U3 A MC33078P 8 V 4 V U4 C 8 V 4 V U3 C MC33078P U4 B C13 100V 100N S T R J4 S T R J3 C15 100N 50V COM M R L MONO STEREO BRIDGED 3705 S3 D 1 4W R6 33K U4 A MC33078P 1 8W R112 10R C16 100N 50V W1 3570 U1 B MC33078P COM M R L 3705 S3 A MONO STEREO BRIDGED 13 10 7 4 1 9 11 12 8 2 3 5 6 VER MODEL S DATE DESCRIPTION O...

Page 13: ...19 10K0 WITH JUMPER X119 PC 6873 REDO SOLDERMASK M1129 Database History CONVERT TO PCAD2002 PC 6944 ROUTE GAUGE PC 6914 ADD TARGETS AUG 15 2005 5 2 6 3 4 1 DATE MODEL S VER DESCRIPTION OF CHANGE D V N D D D V V V N N N M1129 DRILL HISTORY APR 03 2003 V06 N AUG 15 2005 V07 CONVERT TO PCAD2002 AP2020 AP4020 AP4040 AM1CE LIMITER FILTER SW GND LIFT LINE_IN 3436 3417 3436 3436 6435 3705 9K76 10K0 9K76 ...

Page 14: ...2 2 W35 B 12 R214 8K2 1 2W 1 4W R216 1K 0W5 18V0 ZD208 MJF6668 Q205 4148 D201A 16V 33U C202A D202A 4148 C205 100U 25V C TO 221D MJF6388 B E MJF6668 B E TO 92 BC560C C BC550C 6 W36 F 8 3 W36 C 8 230 VAC 50 Hz LINE BROWN BLACK LEAD TO 245VAC INPUT VOLTAGE FOR 230VAC INPUT VOLTAGE OPERATION TRANSFORMER SHOWN WIRED FOR WHITE WC18 BLUE WC10 WC6 YELLOW WC3 GREY WC14 7 W36 G 8 8 W36 H 8 5 W36 E 8 1 W36 A...

Page 15: ...BC550C RELAY 1A PC C RELAY 2C 12V00 TP9 TP10 X1 X39 R245 ZD211 X23 X5 ZD210 R234 R226 W34 GRN ZD205 X10 W7 RED D202B R204B X21 R202B X17 X26 X25 R2 W32 TRANS PRIM BLACK Q210 R238 R240 R244 C216 R243 D240 W30 WHITE AC C1 W4 YELL R242 W13 BRIDGE W3 YELL W24 BRIDGE W8 RED W26 YEL XFRM CT W2 WHT W1 C210 W6 BLUE 100V W10 BLACK W11 BLACK C207 D201B C214B C202B R203B DUMMY X16 C206 C205 C201A C201B C215 ...

Page 16: ......

Page 17: ...10R MBS4992 Q29 A 1 1_ Function J2 A 3628 SPEAKON 4C 2 2_ Function J1 B 3628 SPEAKON 4C 1 1_ Function J1 A 3628 SPEAKON 4C 1 4W R64A FUSIBLE 101R0 VCC GND OUT AS35FN Q31 1 4W R51A 1K5 BC550C Q17A 1 4W R42A 39K 2N5401 Q13A 1 4W R71 100K D21A 4148 4148 D15A 4148 D16A 1 4W R41A 7K5 1 4W R44A 1K 4148 D19A D20A 4148 1 4W R47A 1K5 1 4W R49A 2K 1 4W R57A FUSIBLE 101R0 1 4W R84 FLMP 200R 1 4W R2 68R 1 4W ...

Page 18: ...U 63V 4 U H 10K 1 2W 1 2W 10K 10K 1 2W MBS4992 10K 1 2W MR854 2K 39R0 4148 47K 3K3 180K 4N35 1R 1 2W 33V0 TO220 Watts IRF630NPBF MR854 MR854 MR854 14V0 BC550C 13K 22U 50V 6800U 63V 63V 6800U 6800U 63V 6800U 63V MJ21195 5 0W 0R1 5 0W 0R1 MJ21195 MJ21196 4148 160V 10U MJE340 BC550C 10U 63V 16V0 6800U 63V 5 0W 0R1 MJ21195 MJ21195 MJ21196 5 0W 0R1 25V 330U BC550C 22N MJ21196 MJ21195 MJ21195 Body MJ211...

Page 19: ...MJE340 MJE350 N C MT1 MT2 MBS4942 MAC224 MJL3281A MJL1302 E C B TO 92 MPSA63 MPSA43 MPSA13 2N5551 MPSA56 2N5401 2N6517 11 8 5 2 12 9 6 13 10 7 3 4 1 MAY 16 03 JAN 24 02 MAY 31 01 8 30 8 10 7 00 PC 6607 C10 C15 C20A 5427 5208 2n2 400V PC 6506 ZD10 ZD11 4V7 3V0 PC 6381 ADD C33 C34 R86 R87 PC 6385 C2 C4 1n 2n2 D D D D SEP 2004 AUG 12 99 V 8 20 V 8 00 6 00 N REDO SOLDERMASK PC 6514 Q13 Q20 6900 6909 Q...

Page 20: ...te for one s lack of electronic capability Before starting look at the board for repair and locate the version number It is very important that you follow the procedure for the appropriate circuit board version number A complimentary service manual for the AP4020 power amplifier is sup plied with this M1146KIT STEP 1 Locate the assembly drawing for the version number printed on the M1146 or M1126 ...

Page 21: ... there is still a damaged part on the board instantly turn ing it on could blow up the board and you would be back where you started Connect the power wires and ground to the power supply Connect a digi tal multimeter to test pins 8 and 9 to measure the bias quiescent current and place a scope probe on the speaker output Be sure to turn the quies cent current trimpot RT1 fully counter clockwise No...

Page 22: ...1146 KIT 1N5242B 1N5242B 6450 6450 M1146 KIT 6854 5113 5114 5260 5260 5102 5102 5102 5102 5102 5101 5101 5101 5101 5101 5101 6444 MAC224 4 4749 0R15 5 WATT 4749 0R15 5 WATT 4745 0R1 5 WATT 4745 0R1 5 WATT 4745 0R1 5 WATT 4745 0R1 5 WATT 6990 MJL3281A 6989 MJL1302A 6874 6873 MJE350 MJE340 4974 4973 4607 4607 4645 4645 6201 6201 6201 4911 4911 4804 4804 4973 4977 4977 4982 4982 4591 4593 4593 4606 4...

Page 23: ...0K R25 220K R24 1U 10v C8 4K7 R23 D5 350V 2N6517 Q7 2K2 R21 330R R74 2K R73 MT1 MT2 G TRIAC_MAC224 Q30 20K R35A 16v 10u C21 33K R64 10R R65 39R R32 39R R48 1R 0 5W R28 1R 0 5W R44 120v 220n C11 120v 220n C14 20K R40B 3R9 2W R62 150v 10n C19 BP1 BP2 16V 500mW ZD7 MR854 D20 TP4 TP5 TP7 TP6 TP9 TP10 TP1 D9 TP8 18K R70 4uH L1 5R6 5W R63 3 3K3 R68A 47K R205 10u 120v BC550 Q20A BC560 Q21A 3K3 R69A 10K R...

Page 24: ...D30 1N4004 J18 J17 R82 200R Q29 MBS4992 L 1 4uH R33 1R 1W C14 220N 250V 22N D20 MR854 R36 91K ZD10 4V7 WC6 J10 EY3 EY9 R70 18K R67A 10K Q5 MJL3281A ZD11 4V7 R55 220R0 R28 1 2W 1R D15A 4148 R68 22K 0 5W ZD13 33V R40B 20K C30 22N J14 EY2 R69 22K 0 5W R40 1K C19 10N 250V R50 270R R43 470R D17A 4148 C8 1U 63V EY5 D31 1N4004 R80 220R 1 2 R32 39R C 2 9 5896 80V 4700u R39A 7K5 R41A 7K5 R9 249R R38A 56K R...

Page 25: ...M1127 5 00 R E D G R EY G R EY AP4020CE AC WIRING OCT 24 2000 GREEN YELLOW 1196E 680n N L 4 17 17 15 17 WHITE BLACK GREY YELLOW RED RED GREY SHOWN WIRED FOR 230V BROWN BLACK BROWN BLUE ...

Page 26: ...M1127 5 00 R E D G R EY G R EY AP4020CE AC WIRING OCT 24 2000 GREEN YELLOW 1196E 680n N L 4 17 17 15 17 WHITE BLACK GREY YELLOW RED RED GREY SHOWN WIRED FOR 245V BROWN BLACK BLUE BROWN ...

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