Crest Audio FA-901 Schematic
8
7
6
5
4
3
2
1
R1
D D
1K/2W
LED3
D1 1N4004
D2 1N4004
R3
100
CLIP
Z3
1N4733
RELAY B
RELAY A
SIG GND
A RETURN
A SEND
C C
B SEND
B RETURN
SIG GND
8
7
6
5
4
3
2
1
D3 1N4004
D4 1N4004
VR1
5K
R14 3.32K/1%
J2
PREAMP CONN.
GROUND
GROUND
CLIP B+
SIGNAL B
CLIP BMUTE B
+20 V.
MUTE A
CLIP ASIGNAL A
B B
CLIP A+
GROUND
GROUND
1
2
3
4
5
6
7
8
9
10
11
12
13
J1
PWR SUPPLY CONN
R11
1K/0.5W
Q1 MPSA75
R9
2.2K
GRN
LED7
R7
100/1W
D9
1N4004
LED1
SIGNAL
TEMP/DC
VR2
5K
LED5
46
5
R12
2.7K
R2
1K/2W
R15
3.32K/1%
21
0C1
CLM5010
R5
27
D5
D6 1N4004
D7 1N4004
D8
5
1N4004
1N4004
46
21
0C2
CLM5010
R4
100
LED2
SIGNAL
R6
27
Z4
1N4733
LED4 CLIP
12/8/92 OC1, OC2
BECAME VTL5C6
TEMP/DC
LED6
Q2 MPSA75
R13
2.7K
D10
1N4004
R8
100/1W
A A
R10
2.2K
11/22/95 CHANGED R12, R13
AS PER ECO 811R
CREST AUDIO INC.
150 FLORENCE AVE.
HAWTHORNE, NJ 07506
Title
FA601/901/1201 DISPLAY
Size Document Number Rev
21A1003
A
8
7
6
5
4
3
2
Date: Sheet of
0 0Thursday, January 24, 2002
1
8
7
6
5
4
3
2
1
R7
1N5930
Z1
C1 0.1/100V
D1
1N4148
R24
NOTE 2
330pF
C22
R10 470
C24
150pF
4.7K/2W
D D
1
2
3
4
5
6
7
8
R23
10K/1%
R22
D3
1N4148
D5
1N4148
10K/1%
CH A OCTAL
21
3
J1
CH A XLR
R3
NOTE 1
R21
NOTE 2:
D7
1N4148
C3
30pF
C2
0.1/100V
1
2
BAR1
J6
3
4
5
6
Z3
1N5359
1
2
3
4
5
6
D8
1N4148
1
2
3
4
5
6
7
8
SW1
MSSA2350
R26
10K/1%
R27
10K/1%
D4
1N4148
C C
INPUT BARRIER
SIG SEND/RET
B B
J4
CH B OCTAL
21
R4
NOTE 1
R28
NOTE 2
3
CH B XLR
A A
J2
NOTE 1:
NOTE 2:
NOTE 3: FA601 = 680/10W
8
7
FA601 = 13.3K/1%
FA901 = 12.7K/1%
FA1201 = 12.4K/1%
FA2401 = 12.4K/1%
FA601 = 30.1K/1%
FA901 = 36.5K/1%
FA1201 = 40.2K/1%
FA2401 = 44.2K/1%
FA901 = 820/10W
FA1201 = 1K/10W
6
C5 30pF
84
2
-
3
+
1N4148
1N4148
30pF
IC1A
NE5532
1N5930
D2
D6
C4
5
1
R6
100K
Z2
C6 30pF
R25
NOTE 2
6
-
5
+
IC1B
NE5532
90.9K/1%
C7
0.1/100V
C8
0.1/100VJ3
7
90.9K/1%
1/63V
R1
R5
100K
C12
R2
4
15
14
IC2B
STK3152
C10 15pF
R12
3.32K/1%
C14
10/16V/BP
R9 470
C21
330pF
IC2A
STK3152
R11
3.32K/1%
C13
1/63V
+
-
1
2
C9
15pF
13
+
-
12
349
8
10/16V/BP
10
11
100/100V
100/100V
7
C11
R17 100
R18 100
100K/1W/2%
C15
C16
C23
150pF
6
5
R13 100K/1W/2%
R14
R15
100
R16 100
3
C20
330pF
4.7K/2W
R19
4.7/1W
C17
0.1/100V
0.1/100V
C18
R20
4.7/1W
C19
330pF
NOTE 3
R8
R29
1
2
3
4
5
6
7
8
J8
CH A MODULE
CH A OUT
CH A MODULE
RLY1
T90N5D12-12
J9
1
2
RELAY
CH B OUT
CH B MODULE
RLY2
T90N5D12-12
SUPPLY GND
SUPPLY GND
1
2
3
4
5
6
BAR2
OUTPUT BARRIER
1
2
3
4
5
6
7
8
J7
CH B MODULE
R30
NOTE 3
CREST AUDIO INC.
150 Florence Avenue
Hawthorne, NJ 07506
Title
PREAMP/DRIVER FOR FA SERIES
Size Document Number Rev
21B0982
B
Date: Sheet of
2
1 1Thursday, January 24, 2002
1
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