Crate gtx15a sch Schematic

DCBA

DCBA

D1

12

13

1N914

75V PIV

D2

1N914
75V PIV

IC1:D

R20

15K

C11

100 pF

200V

14

TLO-74

R2

270K

R21

3.3K

TP5

C2

100 pF
200V

C12

.0022
100V

C13

2.2

50V

C14

50V

1.5K

HIGH

1

R4

LOW

MID

TP2

3

IC1:A

2

TLO-74

R3

2.2K

C3

.001

100V

CW

P6

10K L

CW

P4

10K A

CW

P5

500 A

C1

1

2.2

50V

VOLUME

R5

2.2K

CW

P3

10K A

I

I

C

C

O

O

CHANNEL SELECT

R9

2.2K

S1

5

7

IC1:B

6

TLO-74

C5

.0033

R11

R6

100V

.015

100V

680

C6

22K

R7

22K

R10

I

I

C

C

O

O

1.5K

100V

C4

.22

TP6

SW1

R40

47K

R31

100K

R25

10
2W

5per

4

3

2

1

R23

2.2K

C15

.047

100V

R22

10K

3

2

IC2:A

1

TLO-72

R24

47K

C16

100 pF

200V

4-BIT ENCODER

CMN

TP3

SW1 "IN" (OVERDRIVE CHANNEL)

TP4

R8

2.2M

2N5210

R54

22K

D7

1N914

75V PIV

C20

10

35V

R14

47K

10

8

IC1:C

9

TLO-74

D6

Q2

G

J5

R55

47K

Q3

2N5210

R15

10K

C8

1

50V

S

D

Q1

J112

75V PIV

R17

22K

5

IC2:B

6

R26

2.2K

R27

2.2K

1N914

C17

.1

50V

R13

47K

100 pF

7

TLO-72

CW

P1

GAIN

10K L

RC1

1

2

3

4

RC2

1

2

3

4

5

C7

50V

R12

1K

1

D16

1N914

75V PIV

CD INPUT

C19

200V

R28

1K

R16

47K

1/8W

C10

100V

D8

1N914
75V PIV

C22

.22

100V

C23

10

35V

R33

R35

100

.001

1K

TP7

C21

100V

C9

100V

1

2

.22

C24

.022

.1

50V

IC3

TDA 2030

R34

47

LEVEL

R19

47K

4

R32

68K

CW

P2

250K L

100V PIV

1N4002TR

D9

D10

1N4002TR

100V PIV

R441R45

INPUT SIGNAL 50mV P-P @ 1KHz
GAIN & LEVEL @ "10"; LOW,MID,HIGH @ "5"

T.P.

1 0VDC50mV p-p

2

3 1.3mVDC5.5V p-p

4 1VDC6.0V p-p

5 1V p-p 1mVDC

6 6V p-p 1.5mVDC

7 1.2mVDC100mV p-p

8 14VDC.6V p-p

9 -14VDC.6V p-p

10 13VDC200mV p-p

11

12

TP12

R46

1

1

GTX-15(R) TEST POINTS

DC

AC

200mV p-p

16V p-p

R471R481R49

VOLTAGEVOLTAGE

.9mV p-p

R37

C25

.22

100V

.8mVDC120mV p-p

-13VDC

1

1

WAVEFORM

R38

470

C26

R39

.1

47

50V

R51R50

1

1 1

SW1 "OUT" (CLEAN CHANNEL)
INPUT SIGNAL 50mV P-P @ 1KHz
VOLUME @ "10"; LOW,MID,HIGH @ "5"

AC

R52

1

T.P.

1

2

3

4

5

6

7

8

9

10

11

12

4V p-p

R53

VOLTAGEVOLTAGE

0VDC50mV p-p

.8mVDC120mV p-p

1.3mVDC0V p-p

.8mVDC0V p-p

.6mVDC800mV p-p

1.2mVDC400mV p-p

.9mVDC20mV p-p

14VDC.6V p-p

-14VDC.6V p-p

13VDC200mV p-p

-13VDC200mV p-p

.4mV p-p

1

2

RING

RING_SW

TIP_SW

TIP

SLVE_SW

SLEEVE

TP1

C18

10

35V

R1

2.2K

R18

220

J1

1

1

J4

1

2

3

2

2

3

3

DC

J6

J3

J2

FE

FE

WAVEFORM

1

1

2

2

3

3

CAUTION:

CAUTION:

THIS SCHEMATIC IS PROVIDED FOR USE BY QUALIFIED PERSONNEL.

THIS SCHEMATIC IS PROVIDED FOR USE BY QUALIFIED PERSONNEL.
TO AVOID RISK OF ELECTRIC SHOCK, REFER SERVICING TO QUALIFIED

TO AVOID RISK OF ELECTRIC SHOCK, REFER SERVICING TO QUALIFIED
SERVICE PERSONNEL. DO NOT PERFORM ANY SERVICING BEYOND

SERVICE PERSONNEL. DO NOT PERFORM ANY SERVICING BEYOND
THAT EXPLAINED IN THE OPERATING INSTRUCTIONS.

THAT EXPLAINED IN THE OPERATING INSTRUCTIONS.

4

4

NOTES:

NOTES:

1) CAUTION: SHOCK HAZARD!!

1) CAUTION: SHOCK HAZARD!!
THIS UNIT CONTAINS HAZARDOUS VOLTAGE. DISCONNECT POWER

THIS UNIT CONTAINS HAZARDOUS VOLTAGE. DISCONNECT POWER
AND BE SURE POWER SUPPLY IS DISCHARGED BEFORE

AND BE SURE POWER SUPPLY IS DISCHARGED BEFORE
TOUCHING INTERNAL PARTS.

TOUCHING INTERNAL PARTS.

2) UNLESS NOTED, RESISTOR VALUES IN OHMS, 1/4W-5% TOL.

2) UNLESS NOTED, RESISTOR VALUES IN OHMS, 1/4W-5% TOL.
CAPACITOR VALUES IN MICROFARADS, 50V-10% TOL.

CAPACITOR VALUES IN MICROFARADS, 50V-10% TOL.

3) VOLTAGES ARE MEASURED WITH 1 MEGOHM OSCILLOSCOPE

3) VOLTAGES ARE MEASURED WITH 1 MEGOHM OSCILLOSCOPE

AND 10 MEGOHM DIGITAL VOLTMETER.

AND 10 MEGOHM DIGITAL VOLTMETER.

D12

1N4002TR

100V PIV

D11

1N4002TR

100V PIV

J7

1

2

3

D13

1N4002TR

100V PIV

D14

1N4002TR

100V PIV

C28

2200
25V

C30

2200

25V

DCBA

DCBA

R41

220

R42

220

TP9

TP8

C29

22
16V

C31

22
16V

TP10

TP11

ADDED -02 CONFIGURATION

ADDED -02 CONFIGURATION

04/11/03

04/11/03

B

B

INITIAL ISSUE

INITIAL ISSUE

9-11-02

9-11-02

A

A

REV Date DESCRIPTION

REV Date DESCRIPTION

THE INFORMATION CONTAINED ON THIS DRAWING IS PROPRIETARY TO

THE INFORMATION CONTAINED ON THIS DRAWING IS PROPRIETARY TO

Signatures:

Signatures:

RLB

Drawn:

Drawn:

Checked:

Checked:

Released:

Released:

Plot Date:

Plot Date:

Fri Apr 11, 2003

Fri Apr 11, 2003

Plot Time:

Plot Time:

Tolerance:

Tolerance:

RLB

Drawing Size:

Drawing Size:

Drawing Type: Schematic

Drawing Type: Schematic

Class Code:

Class Code:

1

1

Sheet

Sheet

E

E

ST. LOUIS MUSIC, INC

ST. LOUIS MUSIC, INC

Date:

Date:

9-11-02

9-11-02

C

C

NONE

NONE

of

of

1

1

R00980

R00980

Ecr(s)/Ecn(s)

Ecr(s)/Ecn(s)

First Used On:

First Used On:

Drawing Title:

Drawing Title:

Drawing Number:

Drawing Number:

WFB

WFB

Chgd By Appvd by

Chgd By Appvd by

11880 Borman Drive, St. Louis, MO 63146

11880 Borman Drive, St. Louis, MO 63146

GTX15a

GTX15a

GUITAR AMP

GUITAR AMP

07S196-XX

07S196-XX

F

F

Date

Date

4

4