Fender Rumble-75 Schematic

8	7	6	5			4	3	2	1

R E V I S I O N S

R11

260mVAC

REV.

DESCRIPTION

DATE

APPROVED

430mVAC

R23

TP22

*215mVAC

62k

250k15A

A

PR850

19-AUG-09

I D K

TP19

VOLUME

C37

R46

CW

+16V

324mVAC

323mVAC

100mVAC

TP25

1.5k

+16V

Q3

680pF

TP23

*0mVAC

TP18

J175

C7

R58

324mVAC

R92

C67

R120

4.7k

TP24

D1

R39

R57

C42

C39

3

U7-A

22k

22

1k

430mVAC

*When ENABLE

J1

10k

33pF

47k

1

S2-B

50V

C88

1.87VAC*

button is pressed in

C29

R50

R118

R7

C19

R25

.01

.01

2

TL074

3

U8-A

INPUT 1

12

U2-D

C1

TP20

2

U2-A

R59

C32

C54

R84

U8-C

100k

220pF

U2-B

R66

R73

1

9

68k

TL074

14

5

62k

TL074

1

39k

330k

750k

4.7

47k

2

TL074

8

J5

13

7

1

3

C45

PUNCH

D2

22

6

TL074

R32

Q2

C36

.022

R48

4.7

22k

10

TL074

R119

LINE OUT

R6

J113

(80Hz)

(400Hz)

(1.2kHz)

(5kHz)

100k

47k

R86

1M

R14

180pF

1k

C10

Q6

.22

C58

100k

C82

R62

R78

R85

R93

R38

MPSA63

R53

R65

33k

50kB CW

50kB

CW 50kB

CW 50kB

R87

R90

220pF

10k

-16V

D9

D8

75k

CW

D

470pF

BASS

LOW MID

HI MID

TREBLE

33pF

D

-16V

R31

56k

CW

C17

C35

R51

R83

47

47

R13

R1

4.7k

R35

R64

10k

100k

250k15A

C16

CW

R45

22

.047

22k

1M

47k

10kB

R36

R52

100mVAC

GAIN

S3-A

C68

C2

BLEND

100k

15k

.0068

TP17

22

SCOOP

C41

S2-A

22

C49

D11

.1

C34

PUNCH

C56

C61

.22

R91

J2

RED

R47

C43

.068

R79

R80

.047

R81

.015

R88

6.8k

R8

INPUT 2

D12

4.7k

22

S3-B

R56

C52

4.7k

C50

5.6k

C57

6.8k

C62

6.8k

68k

SCOOP

22k

RED

.01

.01

.0015

560pF

R76

R68

R67

U7-D

U7-C

U7-B

U8-D

U8-B

12

10

5

12

5

*TP17 -18. Remove the plug from J1 and

14

8

7

14

7

18k

100k

100k

13

TL074

9

TL074

6

TL074

13

TL074

6

TL074

insert it into J2 for the (*) measurements.

R75

R69

R77

R74

R82

R89

Return signal to J1 for remaining measurements

C53

.001

C48

6.8k

100k

270k

270k

270k

270k

R30

Q4

.01

C46

220pF

J175

3.3k

72mVAC

315mVAC*

C14

D10

TP21

.47

*When ENABLE

button is pressed in

-15.5VDC

TP16

D13

MUTE_1ST

+15.3VDC*

495mVAC

R10

*When ENABLE

TP26

1N4448

button is pressed IN

J175

100k

Q5

+16V

R26

R28

C75

Q9

33k

15k

1

J3

EXTERNAL FOOTSWITCH

L

R122

KTA1266

C9

C76

R29

AUX IN

300

Q8

R

C23

15k

LATCHING SWITCH

100pF

1

R123

R42

C80

C78

R107

R106

.47

WJ1

WJ3

U2-C

R27

47k

220pF

47k

220pF

C

J6

1.2k

10k

RED

9

C

RED

D16

FOOTSWITCH

R44

8

S1-A

WJ4

RED

TL074

10

33k

S1-B

2.2k

WJ2

OVERDRIVE

R20

C87

BLACK

BLACK

10k

+16V

220pF

C38

ENABLE

R43

22

*OPTIONAL LED

3 +

7

R41

C27

3.3k

R21

2

BI

8

5

4.7

BO

4.7k

100

D

4 -

CV

1

U1-A

R100

515mVAC

LM13700

15k

TP27

-16V

C40

5.0VAC

C90

R60

R55

TP29

R101

U10-B

.001

47k

5

1k

U10-A

22

7

3

R110

D20

R54

68k

6

4560

1

2

4560

47

27k

D19

R99

R98

R61

P3

PW3

PA BREAKAWAY A

10k

47k

27k

C24

PA BREAKAWAY A

+25VA

C73

R111

+16V

+25VA

STANDBY

STBYA

13

22

100pF

47

C83

MUTE_1ST

MUTEA

50V

220pF

2

6

U6-A

10

MUTEA

MUTE

7

U6-B

C33

GA

3

TDA7294

14

9

TDA7294

.1

D33

STBYA

STBY

8

15

R121

+25V

C11

C44

C59

C8

C70

4

-25VA

1.5k

.1

.1

.1

.1

4.7

1

-25V

C28

+25V

J4

OUTPUT POWER TEST:

HEAD PHONES

11

4 U2-E

4 U8-E

4 U7-E

8 U10-C

8 U9-C

.1

R97

515mVAC

D35

GA

-25VA

GAA

8ohm RESISTIVE LOAD CONNECTED BETWEEN P1 & P2

TP28

LM13700

TL074

TL074

TL074

4560

4560

RATED LINE VOLTAGE SUPPLIED TO UNIT

15k

WJ7

WJ5

6 U1-C

DGND

11

11

11

4

4

RED

D36

D21

SIGNAL APPLIED TO AUX-IN JACK (J3)

MAX HP OUTPUT, Vo = 2.99Vrms

RED

AMPGND

RED

1N4003

OUTPUT VOLTAGE MEASURED WITH A DVM BETWEEN P1 & P2

R96

280mW @ 0.1% THD INTO

5

U9-B

WJ6

OSCILLOSCOPE PROBE MAY BE CONNECTED TO P1 and/or P2, BUT

C79

32ohms (MIN) PER CHANNEL

WJ8

POWER

P1

7

3

U9-A

C12

C13

C60

C51

C74

BLACK

DO NOT GROUND THE BLACK (-) SPEAKER CONNECTION (P1)!

R108

220pF BOTH CHANNELS DRIVEN, 100Hz

BLACK

68k

6

4560

1

.1

.1

.1

.1

4.7

UNDER THESE CONDITIONS, VERIFY THE FOLLOWING:

2

4560

C47

FREQ

100Hz

1kHz

47

22

R72

D22

R95

R94

50V

Fr2.7

1N4003

LIMITER ON

69W (23.5Vrms)

69W (23.5Vrms)

2W

<0.3% THD

<0.3% THD

R104

10k

47k

C55

27k

LIMITER OFF*

75W (24.5Vrms)

75W (24.5Vrms)

C72

R109

-16V

D28

.1

<0.3% THD

<0.3% THD

B

D27

*When ENABLE button is pressed IN

100pF

47

B

R103

-25V

C77

27k

R102

+16V

+29.5VDC

+27VDC

+15.5VDC

22

1k

P5

PW5

PA BREAKAWAY B

BLACK

-

TP3

TP5

TP7

R105

+16V

C15

+25V

PA BREAKAWAY B

+25VB

12" 8-ohm SPEAKER

7815

27k

STANDBY

STBYB

22

5.0VAC

WHITE

+

R112

22.5VAC

R70

U4

13

TP30

D30

R115

R117

0VDC **

R63

50V

33k

IN

OUT

+25VB

MUTE_2ND

MUTEB

TP1

2

6

100k

47k

10M

47

1

3

U3-A

+7.0VDC

C63

1/2W

ADJ

10

7

C20

GB

3

TDA7294

14

TP11

4700

2

MUTEB

MUTE

U3-B

MUTE_2ND

D32

**With plug inserted

40V

C25

9

TDA7294

+25V

.1

C30

15

in HEADPHONES jack

P4

C66

D26

D25

47

.1

D18

C21

STBYB

STBY

8

6A4

6A4

4

-25V

-25VB

.1

22

MUTE_1ST

CS1

CS2

R49

1

C18

250V

+25V

.1

C64

47

-25VB

STANDBY

+7.0VDC

+9.5VDC

D

D17

C22

GB

TP9

TP10

.1

D23

D24

CHRGND

AMPGND

DGND

C31

C26

22

GBB

250V

6A4

47

.1

D29

6A4

AMPGND

1N4003

R114

C71

C69

R113

C65

1

G

47

100

4700

GND

P2

33k

47k

R2

16V

16V

40V

R71

7915

S Q10

2

3

C84

22.5VAC

6.8k

IN

OUT

TP2

47

U5

R116

D31

.047

1/2W

Fr2.7

1N4003

-25V

2W

-29.5VDC

-27VDC

-16V

-15.5VDC

AMPGND

TP4

TP6

TP8

R3

C81

.1

100k

+13.4VDC

+25V

+4.3VDC

TP15

TP14

D7

R34

R33

-25V

-16V

R18

33k

9.1k

0VDC

2k

TP13

R17

D14

Q7

4.7k

J113

-15.5VDC

R24

R40

8. THIS POWER AMPLIFIER OPERATES IN A BRIDGED CONFIGURATION.

TYPICAL POWER

TP12

10k

NEVER CONNECT THE BLACK (-) SPEAKER OUTPUT DIRECTLY (OR INDIRECTLY

POWER TRANSFORMER

-16V

10

+ 14

ON/OFF SWITCH

D4

D3

D5

D6

12

9

BI

10M

THROUGH GROUNDED OSCILLOSCOPE PROBE) TO GROUND!

A

UP

FUSE RATING

INPUT VOLTAGE

LABEL

BO

D

15

A

13

7. AC AND DC VOLTAGES ARE READ TO GROUND WITH A DVM UNDER

U1-B

CV

-

2A

4B

LINE VOLTAGE

F1 VALUE

100V

076-RB75J

R4

R9

R12

R15

LM13700 16

R22

THE FOLLOWING CONDITIONS:

Q1

10k

UNIT AT RATED LINE VOLTAGE

DGND

8 OHM RESISTIVE LOAD AT P7-P8

THIS DOCUMENT CONTAINS INFORMATION OF

R

100-120V

F2A L 250V

120V

076-RB75U

MPSA63

4.7k

33k

33k

33k

1A

3B

D15

NO INPUT SIGNAL FOR TP1-16

A PROPRIETARY NATURE TO FENDER MUSICAL

C3

C4

C5

C6

R16

100mVRMS, 100Hz SINEWAVE INPUT SIGNAL AT J1

220-240V

F1A L 250V

220-240V

076-RB75E

INSTRUMENTS AND IS SUBMITTED TO YOU IN

MUSICAL INSTRUMENTS

1

1

1

1

33k

ALL CONTROLS AT 12 O'CLOCK (50% ROTATION)

REAR VIEW

R5

ENABLE SWITCH S1 OUT (OFF), EXCEPT AS NOTED* FOR TP16,20,21,29-31

CONFIDENCE AND SHALL NOT BE DISCLOSED OR

6.8k

10k

33k

VOLTAGES MAY VARY BY +/-20%

Corona, CA

U.S.A.

R19

R37

1.5VAC

TRANSMITTED TO OTHERS WITHOUT AUTHORIZ-

3mVAC*

6. LAST REFERENCE DESIGNATORS: C90, D36, F1, J6, P9, PW5, Q10,

ATION FROM FENDER MUSICAL INSTRUMENTS.

TP31

R123, S3, U10. NOT USED: D34

F1

P7

SERVICE DIAGRAM, COMBINED

BLACK

3B

4B

BLACK

P6

*When ENABLE

5. THIS SCHEMATIC IS FOR PCB FABRICATION P/N 850VKI011 AND

CHECKED BY:

TITLE:

(schematic)

L

RED

-25V

BLACK

TO P4

button is pressed in

PCB ASSEMBLY P/N 850KKI010.

RUMBLE 75

GRN/YEL

C89

DGND

DATE:

4. ALL DIODES ARE 1N4448.

.1

DGND

BASS AMPLIFIER

N

WHITE

1A

2A

WHITE

250VAC

YEL

3. ALL POLARIZED CAPACITORS IN uF, 20%; 25V MINIMUM.

APPROVED BY:

P8

SIZE

DRAWING NUMBER

REV.

POWER

P9

2. ALL UNPOLARIZED CAPACITORS IN uF, 10% OR BETTER; 50V MINIMUM.

DATE:

SWITCH

WHITE

RED

(POWER SUPPLY BYPASS CAPACITORS ARE 20%).

D

850KKI012

A

1. ALL RESISTORS IN OHMS, 5%; 1/4W.

DRAWN: IDK/dBL

ENGR: IDK/dBL

NOTES:

(UNLESS OTHERWISE NOTED)

DATABASE FILE: Z850S.SCH

RELEASE DATE: 19-AUG-09

SHEET:

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