Crest Audio PFA-600 Schematic

PFA600Poweramplifiers

1.Displayboard

2.Inputboard

3.Preamp

4.Powersupplydriver

5.Powersupplyboard

6.Relayboard

7.Voltagemonitor

8.Outputmodule

Schematicset

8

D D

7

R42

91/10W

6

5

4

3

2

J3

RELAY CH. B

1

RELAY CH. A

2

RELAY GROUND

3

RELAY GROUND

4

LED GROUND

5

ACTIVE CH. B

6

TEMP/DC CH. B

7

SIGNAL CH. B

8

CLIP CH. B

9

CLIP CH. A

10

SIGNAL CH. A

11

TEMP/DC CH. A

12

ACTIVE CH. A

13

26-48-1136

1

C3

7

LM614

IC1B

R9

2.7K

Z3

IC1E

R34

4.7K

1N5344

Z4
1N5344

Z5
1N5344

1N5927

R24
1K/1%

D18

1N4148

Z2

R32

390K

C6

100/25V

C5

Q3

Z1

1N5927

R21

1K

1K/1%

D19

1N4148

-

6

+

5

R31

390K

0.1/100V

R23

8

13

LM614

9

499/1%

R33

4.7K

R35

499/1%

R37

2.2K

R36

R10

2.7K

2N5551
Q4

R22
1K

-

15

+

14

IC1D

LM614

470/6.3V

D10

1N4148

16

R8

100K

D8
1N4148

C4

TR2
MAC97A

C7

100/25V

R12

5K/5W

C2
1/50V

2N5551

2.7K

R6

R4

1N4004

10K

D2

D4

1N4148

1N4148

D21

J2

+24V. OUT

1

SIGNAL CH. A

2

CLIP CH. A

3

CONTROL V. CH. A

4

LIMIT CH. A

5

MUTE CH. A

6

AMP OUT CH. A

7

TEMP SENSOR + CH. A

8

TEMP SENSOR OUT CH. A

9

TEMP SENSOR GND. CH.ATEMP SENSOR GND CH. B

10

GROUND

11

GROUND

12

GROUND

13

+24V. IN CH. A

14

+24V. IN CH. B

15

26-48-1156

Q2

D6
1N4148

R14

10K

D20

1N4004

D14

1N4148

1N4148

R20

7.5K

R18

2.7K

12

+

10

11

-

IC1C

LM614

R39 100K

R30

D16

10K

R26
47K

4.3K

R28

R16

2.7K

Q6
MPSA75

R44
15

D12

1N4148

R5

2.7K

R3

10K

Q1
2N5551

R7
100K

2N5551

C C

FAN +

26-48-1156

J1

15
14
13
12
11
10

9
8
7
6
5
4
3
2
1

A/B MUTE
SIGNAL CH. B
CLIP CH. B
CONTROL V. CH. B
LIMIT CH. B
MUTE CH. B

AMP OUT CH. B
TEMP SENSOR + CH. B
TEMP SENSOR OUT CH. B

GROUND

GROUND

GROUND

FAN GROUND

D3
1N4148

D5
1N4148D71N4148

C1
1/50V

D9
1N4148

R11

TR1

5K/5W

R13

10K

MAC97A

C8
100/25V

470/6.3V

D11

1N4148

D13

1N4148

B B

1

IC1A

LM614

R38

R25

100K

47K

2.7K

R17

2.7K

R15

MPSA75

Q5

R43

R27

4.3K

15

R19

7.5K

-

2

+

3

D15

1N4148

4 13

R29

10K

D17

1N4148

D22

1N4004

A A

D23

1N4004

CREST AUDIO INC.
150 Florence Ave.
Hawthorne, NJ 07506

Title

PFA600 DISPLAY/PROTECT DRIVER

Size Document Number Rev

21C1169

C

8

7

6

5

4

3

Date: Sheet of

2

1 0Tuesday, June 27, 2000

1

8

D D

7

6

5

4

3

2

1

J1

1
2

J3

3
4
5
6
7
8

PTC15XD 5KAP

VR1

PL08

VR2

C C

PTC15XD 5KAP

J2

17
16
15
14
13
12
11
10
9
8
7

6
1
2
3
4
5

5

4

3

2

1
6

26-48-1175

PL08

7
8

R1 680/10W

R2 680/10W

BAR1

B B

1
2
3
4
5
6

.25 LUG

72706-C-50-81

CREST AUDIO INC.

A A

150 Florence Ave.
Hawthorne, NJ 07506
Title

PFA600 INPUT PCB

Size Document Number Rev

21A1171

A

8

7

6

5

4

3

2

Date: Sheet of

1 1Tuesday, June 27, 2000

1

8

7

6

5

4

3

2

1

R8

100K

R5

4.7K

Q2

TURN ON DELAY

VCC+

D5

1N4148

D6

1N4148

C4

30pF

R6
10K

C1

100/35V

D7

1N4148

C7

0.1/50V

D1

1N4148

D D

15K

R2
330K

VCC-

13
12
11
10

9
8
7
6
5
4
3
2
1

J2-M
26-48-1135

R1

C3 0.1/50V

SIP1A

10K/0.2%

SIP1C

Q1
2N5401

R4
22K

2N5551

R3

10K

D4

1N4148

10K/0.2%

C C

R12
12K

SIP1D

48.7K/1%

R7

10K

R13

220K

C6 30pF

SIP1B

48.7K/1%

-

6

+

5

C5
470pF

IC1B
NE5532AN

VCC+

R9

10K

2.2K

R11

MPSA75

Q3

R10

100K

D2
1N4148

47/35V

C2

D3
1N4148

D13
1N4148

R31

4.7K

R32

1.0K/1%

R33
22K

C13

R30 47K

84

3

+

7

VCC-

2

-

2.2/5%/100V

IC1A
NE5532AN

R15

10K/1%

1

IC3C
LM339N

C8

10/35V

-

8

14

+

9

R39
SELECTED

VCC-

R34

499/1%

1
2
3
4
5
6
7
8 9

NE5517AN

VCC-

ATTENUATION/MUTE

R41
1K/0.1%

IC4

NOTE 4

R45 100K/0.1%

R83

16
15
14
13
12
11
10

R43
1K/0.1%

R37
47K

R35

1.0K/1%

R36

3.3K

R47

100K/0.1%

VCC+

Z1 1N5353

C14 470uF

C16 470uF

0.47/250V

Z3 1N5938

BALANCED INPUT/GAIN

VCC

R38

R40

SELECTED

-

6

1

+

7

R42
1K/0.1%

R44
1K/0.1%

R46 100K/0.1%

R48

100K/0.1%

R55

VCC+

2N5401

2.2K
Z4 1N5938

Q5

R53

VCC-

100K

R54
1M

D14

1N4148

D15

1N4148

R56

0.47/250V

C17 470uF

C15 470uF

Z2 1N5353

R50

10K

IC3D
LM339N

R51
1M

11

+

13

10

-

R52
100K

2N5551
Q4

2.2K

R18

2.2K

0.001/50V

R27

2.2K

R29

2.2K

312

+

2
IC3A

-

LM339N

R28
10K

ATTENUATOR DRIVER

R19
10K

C10

1N4148

R20

549/1%

IC3B

LM339N

D21

R81
10K

2.2K

R49

D12

1N4148

10K

C9

2.2/5%/100V

R16

150K

15
14
13
12
11
10

9
8
7
6
5
4
3
2
1

J3-M

B B

26-48-1155

R21

100K

R82

NOTE 4

VR1

NOTE 4

D8

1N4148

R22 10K

D10 1N4148

D11 1N4148

R23 10K

C12 1/50V

C11
1/50V

D9

1N4148

VCC+

R24

680K

5

+

7

6

IC2B

-

RC4559

R25

680K

VCC- VCC-

R17 4.7K

VCC+

84

2

1

3

+-IC2A

RC4559

VCC-

SERVO/HIGH PASS CURRENT LIMITER

R26

1K

VCC+

5
4

SIGNAL DETECTOR CLIP DETECTOR AMPLIFIER FRONT END/IC POWER SUPPLY

C18

0.1uF

R57

100

R58
100

C20

C21

0.1uF
C19

2N5401

VCC+

R65

NOTE 3

R59
511/1%

2N5551

R69
NOTE 1

Q14
2N5551

Q10

Q6

2N5551

R73
0

R74

R76
NOTE 2

R78

2.7K

R79

11K/1%/1W

R80

549/1%

R77
NOTE 2

R75

47

D18

SF14

D19

SF14

30pF

C22

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17

J1-F

09-52-3173

D16

1N4148

D17

1N4148

Q8
2N5551

R61

68.1/1%

R63

8.25K/1%

R62

68.1/1%

Q9
2N5401

2N5551
Q12

R67

68.1/1%

R64

8.25K/1%

R68

68.1/1%

2N5401
Q13

R71
100

R72
100

47

Q11

R70
NOTE 1

2N5401

Q15
2N5401

Q7

R60
511/1%

R66

NOTE 3

VCC-

NOTE 1: 6.8K 2W 5%

NOTE 2: 20K 2W 5%

NOTE 3:680 10W 5%

A A

CREST AUDIO INC.

150 Florence Ave.
Hawthorne, NJ 07506

Title

PFA600 PREAMP/FRONT END

Size Document Number Rev

21C1124-PFA

C

8

7

6

5

4

3

Date: Sheet of

2

1 0Tuesday, June 27, 2000

1

8

7

6

5

4

3

2

1

R12

2K

C4

0.01/50V

D D

R2
510

R5

10K

R4

620

C11

10/50V

1/63V

C5

0.018/50V

Q6

2SC3281

C7

TIP112

Q7

R13

10K

L1
1mH

R3

C9

560PF

C8

C10

1/63V

Z2

1N5930

D4

SF14

D3

SF14

C12

1/63V

6.2K

0.1/50V

C C

C1 0.1/50V

R1 1K

C2 1/50V

C3

4.7nF 2%

B B

2N5551

Q1

3

116

12
10

9

IC1

UC3825

8
7 4
6 2

5

R6

1.21K/1%

0.1/50V

R17

10K

15
13
11
14

C6

R16

1K

R7

4.7/1W

D1

1N5819

1N5819

Z1

1N4691

D2

R8

10/1W

10/1W

301 1%

R15

1K 1%

R9

R14

Q2

2SC3346

Q3
2SA1329

C13
10/50V

2.2/1W

Q4
2SC3346

2.2/1W

Q5
2SA1329

R10

R11

D5

SF14

D6

SF14

1
2
3
4
5
6
7
8
9
10
11
12
13

J1

09-48-2131

1
2
3
4

J2

26-48-1045

GATE Q8
GATE Q9
CURR.LIMIT
CURR.LIMIT
GROUND
GROUND
GROUND
+24V IN
+24V IN
LOOP
LOOP
GROUND
GROUND

ENABLE
GROUND
ENABLE
GROUND

CREST AUDIO INC.

A A

150 FLORENCE AVE.
HAWTHORNE, NJ 07506

REV NOTES: 10/6/94 CHANGED Z1 FROM 1N829 TO 1N4691, R17 FROM 100K TO 10K

Title

PFA600 POWER SUPPLY DRIVER

Size Document Number Rev

21A1173

A

8

7

6

5

4

3

2

Date: Sheet of

1 1Tuesday, June 27, 2000

1

8

7

6

5

4

3

2

1

F2

TO J2,

PINS 1&2,

DRIVER PCB

D D

GATE Q8

GATE Q9
CURR.LIMIT
CURR.LIMIT

+24V OUT
+24V OUT

GROUND
GROUND
GROUND

LOOP

LOOP
GROUND
GROUND

26-03-4020

2
1

J3

1
2
3
4
5
6
7
8

9
10
11
12
13

22 GA.

22 GA.

100C

ON HEAT SINK

J1

26-48-1135

DIRECT

CONNECTION

TO J1 OF

C C

DRIVER PCB,
# 26A1173

Q9-5

1.5K
R6

T2-1

T2-2,3

R1

33/5W

T2-4

R7

1.5K

Q8-5

B B

ON HEAT SINK

ON HEAT SINK

F1

FUSE

Q9-5
Q9-4

Q9-4

Q8-4

Q8-4
Q8-5

Q9

IRFK4H100

T2-1

50T

T2-2,3

50T

T2-4

CUR XFMR

IRFK4H100

Q8

12

32

1N5333A

2T

5

2T

6

PWR XFMR

7

2T

8

2T

9

Z1

L1-E

100uH

T1

T1

1

1 2

D7A

FEP6DT

9 10

C13

1/63V

2

3

3 2

D7B

FEP6DT

10

5T

11

12

5T

13

14

5T

15

16

5T

17

1 2

D9A

FEP16JT

D9B

3 2

1 2

D11A

FEP16JT

D11B

3 2

1 2

D8A

FEN16JT

D8B

3 2

1 2

D10A

FEN16JT

D10B

3 2

C3

1n/1600V

R4

100/25W

C4

1n/1600V

R5

100/25W

1

L1-A

100uH

L1-B

100uH

3

5

L1-C

100uH

L1-D

100uH

7

IC1

LM7805

IN OUT

GND

2

15000/70V

15000/70V

4

6

15000/70V

15000/70V

8

Z2

1N4749

C5

C6

C7

C8

C14
25uF/35V

C9

2.2/100V

C10

2.2/100V

C11

2.2/100V

C12

2.2/100V

D3

1N4004

J2

26-48-1085

1
2
3
4
5
6
7
8

D2
1N4004

+28VDC
+28VDC
GROUND
GROUND
GROUND
GROUND

-45VDC
+45VDC

RED1
RED2

RED/BLK1
RED/BLK2

BLK1
BLK2
BLK3
BLK4

GRN/BLK1
GRN/BLK2

GRN1
GRN2

D1

HER155

L1-F

25uH

1112 4

D6A

FEP6DT

D6B

FEP6DT

1

50/25W

R2

D5

MBR1645

3

C1
10n/1000V

C15

20MF/100V

T2

C2
10n/1000V

3

50/25W

R3

D4

MBR1645

1

Z3

5KP36A

REV NOTES: 10/6/94 ADDED Z3, CHANGED R6, R7 TO 1.5K

50A L2

BR1

A A

GND FROM BATTERY

+ FROM CIRCUIT BREAKER

8

7

6

1mH

5

CREST AUDIO INC
150 FLORENCE AVE.
HAWTHORNE, NJ 07506

Title

PFA600 POWER SUPPLY MAIN BOARD

Size Document Number Rev

21B1183

B

4

3

Date: Sheet of

2

1 1Tuesday, June 27, 2000

1

8

D D

7

6

5

4

3

2

1

AMP OUT CH. A

GROUND

AMP OUT CH. A

GROUND

AMP OUT CH. A

GROUND

AMP OUT CH. B

C C

AMP OUT CH. B

GROUND

GROUND

AMP OUT CH. B

GROUND

1
2
3
4
5
6
7
8

9
10
11
12

72512-50-55-C

FROM CH. A OUT
FROM CH. B OUT

PWR SUPPLY GND

BAR 1

PWR SUPPLY GNDPWR SUPPLY GND

R2

10/10W

L1

2uH

R3

1/10W

10/10W

0.047/630V
L2

2uH

R4

1/10W

C1

R1

RL1

FRL-24

RL2

LED2

PROTECT

CLIP

SIGNAL

LED8

LED1

ACTIVE

LED3

SIGNALLED4

LED5

CLIPLED6

LED7

PROTECT

J3

1
2
3
4
5
6
7
8
9
10
11
12
13

26-48-1135

RELAY CH. B
RELAY CH. A
RELAY GROUND
RELAY GROUND
LED GROUND
ACTIVE CH. A
TEMP/DC CH. A
SIGNAL CH. A
CLIP CH. A
CLIP CH. B
SIGNAL CH. B
TEMP/DC CH. B
ACTIVE CH. B

FRL-24

B B

C2

ACTIVE

0.047/630V

CREST AUDIO INC.

A A

150 Florence Ave.
Hawthorne, NJ 07506
Title

PFA600 RELAY/LED PCB

Size Document Number Rev

26A1170

A

8

7

6

5

4

3

2

Date: Sheet of

0 0Tuesday, June 27, 2000

1

8

D D

7

6

5

4

3

2

1

F1

3A/MINI

1N4004

Q1

2SC2336

D1

R4

D4

1N4004

R9

10K

R5

680/1W

R1

10K/1%

C C

RL1
FRL-24

D2
1N4148

R3

1K/1W

10/25V

C2

Z1

1N5927

84

3

+

2

-

IC1A

AD712

Z2

1N5913

6

-

5

+

IC1B

B B

AD712

2.2K
D5

1N4004

R10

LED1
O.V.

10K

>30V

1

D3

1N4004

R6

2.2K

LED2

NORMAL

<30V

7

R8

10K

R7

D6

1N4004

D7

1N4004

Q2
MPSA13

1
2
3
4
5
6
7
8
9
10
11
12

J1

26-48-1125

+24V IN
+24V IN
GROUND
GROUND
GROUND
+24V OUT
REMOTE
REMOTE
CH. A ENABLE
CH. A ENABLE
CH. B ENABLE
CH. B ENABLE

2.2K

3.32K/1%

R2

C1

10/25V

Z3

1N5917

U.V.

R11

10K

LED3

<19V

R8,R11 AND Q2 ARE NOT USEDNOTE:

CREST AUDIO INC.

R3 CHANGED FROM 10K TO 1K/1W ON 4/7/92

A A

R4 CHANGED FROM 1K/1W TO 680/1W ON 4/7/92

150 Florence Ave.
Hawthorne, NJ 07506
Title

PFA600 VOLTAGE MONITOR/CONTROLLER

Size Document Number Rev

26A1172

A

8

7

6

5

4

3

2

Date: Sheet of

0 0Tuesday, June 27, 2000

1