Crest FA2401 set, 21a1386 Schematic
8
7
6
5
4
3
2
1
1
R15
LED7
2
3
4
1K/0.5W
R4
D D
2.2K/0.5W
LED6
Z5
1N5920
PROTECT
POWER ON
LED4
CLIP
R6
1.5K/0.5W
Z1
1N59XX
R8
1K
R14
20
C C
CH B
R10
10K
Z3
1N59XX
D9
1K/2W
1N4148
D10
5
6
7
8
9
10
11
12
13
J1 09-48-2131
PWR SUP PCB
R2
AUX GND
DATA CH B
IGM B
SPKR LEVEL B
CLIP B
RELAY B
+15 V
RELAY A
CLIP A
SPKR LEVEL A
IGM A
DATA CH A
AUX GND
D5 1N4004
D6 1N4004
D7 1N4004
LED2
SIGNAL
VR2
CH B
5K
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
J2
26-48-1156
ANALOG GND
RET CH B
SEND CH B
RELAY CH B
RELAY CH A
RELAY GND
-24V
+24V
AUX GND
AUX GND
DIG GND
DIG GND
ANALOG GND
RET CH A
SEND CH A
1N4148
MPSA75
D8 1N4004
R1
Q2
D11
1K/2W
D1 1N4004
VR1
5K
CH A
1N4148
D2 1N4004
LED1
SIGNAL
R3
LED3
R16
10/1W
D3 1N4004
2.2K/0.5W
LED5
B B
Z6
1N5920
PROTECT
CLIP
R5
1.5K/0.5W
Z2
1N59XX
R7
1K
R9
10K
Z4
1N59XX
D13
1N4148
R13
20
CH A
D14
1N4148
MPSA75
D4 1N4004
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
ATT. CH A
ATT. CH B
ANALOG GND
+24 V
-24 V
GROUND
DATA CH A
DATA CH B
+15 V
ANALOG GND
CLIP CH B
CLIP CH A
GROUND
DIG. GND
DIG. GND
J2
A A
Q1
D15
DSUB 15
PREAMP
CREST AUDIO
100 EISENHOWER DRIVE
1N4148
PARAMUS, NJ 07652
Size Document Number Rev
A
21A1386
8
7
6
5
4
3
2
Date: Sheet of
0 0Thursday, January 24, 2002
1
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