Crest FA901 set, 21c1059 output module Schematic

8

D D

7

6

5

4

3

2

1

D1 1N4004

2N5551

C2

2N5401

R61

NOT USED

R63
470

C11

0.01/50V

Q28

D7

1N4148

341

2
9

785

IC1

LA2500

Q29

1N4148

0.01/50V

R62

6

100/1W

D8

C10

R3

Q2
2SC2336BQ

R6

10/1W

150/1W

150/1W

R7

10/1W

Q3
2SA1006BQ

Q4
2SC3281

R11

2.2/1W

R4

R8

R5

51/2W

R12

2.2/1W

Q5
2SA1302

R64
470

R9
30/2W

R10
30/2W

Q6
2SC3281

R25

0.33/5W

R26

0.33/5W

Q7
2SA1302

R15

2.2/1W

R16

2.2/1W

Q10
2SC3281

R29

0.33/5W

R30

0.33/5W

R18

2.2/1W

Q11
2SA1302

R17

2.2/1W

Q12
2SC3281

R31

0.33/5W

R32

0.33/5W

Q13
2SA1302

R21

2.2/1W

R22

2.2/1W

Q14
2SC3281

R35

0.33/5W

R36

0.33/5W

Q15
2SA1302

R23

2.2/1W

R24

2.2/1W

Q18
2SC3281

R37

0.33/5W

R38

0.33/5W

Q19
2SA1302

R45

15K

R39 100K

R41

150/1%

R42

150/1%

R40 100K

R46

15K

R43

100/1%

R44

100/1%

2N5551

2N5401

100K

R48
100K

Q22

R49

Q20
2N5551

Q21
2N5401

15K

Q24
2N5401

R53
270K

Q26
2N5401

R55 220

D3
1N4004

D4
1N4004

FR204

D5

C7

0.1/100V

1/5W

L1

2uH

R59

R60

2/5W

R54 220

Q27
2N5551

Q25
2N5551

R50
15K

FR204

D6

0.047/630V

C6

0.1/100V

C5

R47

Q23

+ 75 V.

GROUND

OUT

- 75 V.

NOT USED

Z1
1N5925A

Z2

1N5941A

0.001/50V

C1

C C

8
7
6
5
4
3
2
1

J1

INPUT

100/6.3V

1N4148

D10

1N4148

D9

0.001/50V

R66

15K

2SC3068

PTC15LB/100

C8

13K

C9

0.1/100V

R1

680

Q1

R2

620

VR1

R67

R65

Z3

B B

1N5941A

Z4
1N5925A

15K

R68

13K

D2 1N4004

IC2

32

1

LM35DP

R56
1K

TEMP/CLIP

J2

1
2
3
4
5
6
7

TEMP SENSOR POWER

TEMP SENSOR OUT

POWER SUPPLY GROUND

POWER SUPPLY GROUND

A A

OUTPUT SIGNAL

CLIP ­CLIP +

CREST AUDIO INC.

150 Florence Ave.
Hawthorne, NJ 07506
Title

FA901 OUTPUT STAGE

Size Document Number Rev

21C1059

C

8

7

6

5

4

3

Date: Sheet of

2

1 1Thursday, May 18, 2000

1

1