Service Manuals, User Guides, Schematic Diagrams or docs for : . Various SM scena Crest fcv220fcv440_schematic_set1
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Schematic set
FCV 220 & FCV 440 Series power amplifiers
1. Preamp driver
2. Preamp driver OTA
3. Power supply interconnects
4. Power supply and fan driver
5. Output stage
6. NexSys preamp driver
7. NexSys power supply
8. NexSys output stage
8 7 6 5 4 3 2 1
R7
Z1 1N5930 2.7K/2W
R10 470
R24
D1
NOTE 2 C24
C1 0.1/100V 1N4148 C22
150pF
330pF
13
12
10
R23 C5 30pF R17 100 1
D D
1 2
2 15
10K/1% + 3
3 4
14 - C20
4 5
4
D3 D5 IC2B 330pF
5 6
1N4148 1N4148 2 -
STK3152
11
6 R2 7
R22 1 90.9K/1%
7 8
3 +
8 IC1A
10K/1% J8
J3 NE5532
C8 R18 100 CH A MODULE
D7 C10 15pF
8
CH A OCTAL 0.1/100V
1N4148 CH A OUT
R3 R8
R21 C3
NOTE 1 NOTE 2: 30pF 2.7K/2W
R14
CH A MODULE
Z2 100K/1W/2%
C2 1N5930 VR1
R19 RLY1
0.1/100V 5K
R12 T90N5D12-12
4.7/1W
1 6.65K/1%
C17 J9
2
3 0.1/100V 1
C15
C 4 R6 100/100V 2 C
5 100K C12
6 RELAY
0.47/250V 0.1/100V CH B OUT
BAR1 Z3
INPUT BARRIER 1N5359 C18
C16
100/100V R20
4.7/1W CH B MODULE
RLY2
T90N5D12-12
R9 470 SUPPLY GND
D8 D2
1N4148 1N4148 C19 SUPPLY GND
330pF
C6 30pF C23
150pF R15
R26 R25 C21
330pF 100
3
4
9
6
10K/1% NOTE 2 1
1 +
2
3 2 -
B IC2A B
4 D4 D6 6 -
STK3152
5
8
7
5
R27 1N4148 1N4148 7
6
7 5 +
1
SW1 MSSA2350
8 IC1B 2
10K/1% NE5532 R13 100K/1W/2% 3
J4 4
CH B OCTAL VR2 C9 5
R4 R28 C4
5K 6
NOTE 1 NOTE 2 30pF 15pF R16 100 7
R1 8
90.9K/1% R11
6.65K/1% J7
C7 CH B MODULE
0.1/100V
R29 R30
NOTE 3 NOTE 3
R3,R4 NOTE 1: FCV440 = 13.75K/1%
FCV220 = 15.1K/1%
R5
100K C13
R21,R24,R25,R28 NOTE 2: FCV440 = 27.18K/1% 0.47/250V
FCV220 = 19.6K/1%
A A
R29,R30 NOTE 3: FCV440 = 680/10W CREST AUDIO INC.
FCV220 = 520/10W
150 Florence Avenue
Hawthorne, NJ 07506
Title
PREAMP/DRIVER FCV220/FCV440
R7, R8 CHANGED FROM 4.7K TO 2.7K ON 4/8/92 Size Document Number Rev
B 21B1241
Date: Thursday, May 18, 2000 Sheet 1 of 1
8 7 6 5 4 3 2 1
8 7 6 5 4 3 2 1
D D
R10 470
R24 +24V
C24
C22
330pF 150pF
C1 0.1/100V NOTE 2
13
12
10
1 R17 100 1
2 D1 2
C5 30pF 15
3 3
8
+
1N4148 R6
4 +24V 4
R23 3 14 C20
5 + - 5
1 IC4B 330pF
6 220K 6
C30 2 IC2A R2 STK3152
11
7 10K/1% - 7
8 OPA2604 90.9K/1% 8
C29 C12
8
D5
4
J3 D3 CP C8 J8
CH A OCTAL 1N4148 1N4148 2 0.1/100V CH A MODULE
- 220pF C10 15pF R18 100
R22 1 1/63V CH A OUT
3 R44 R45
+ IC1A
10K/1% OPA2604 3.3K 6.8K
-24V
D7 JP1
4
1N4148 C14 R12 CH A MODULE
R14
J1 C31 R34
R3 VR1
CH A R21 C3 5K
NOTE 1 6.65K/1% 100K/1W/2% RLY1
NOTE 2: 30pF 10/16V/BP
BAR1 CP 3.3K +24V T90N5D12-24
Z1 R19
1 R7
J9
JP?
2 -24V 4.7/1W
C2 R35
3 200/1W 1
0.1/100V 1N5353 C17
4 2
5 0.1/100V 3
750 C15
6 100/100V HEADER 3
+24V R39 26-48-1036
16
15
14
13
12
11
10
INPUT BARRIER
9
R36 10K R42 0.1/100V
C CH B OUT C
47K
D2 C18
ANALOGGND 750 IC3 Z2 C16
1 1N4148 R38 NE5517AN 100/100V R20
ANALOGGND 6.8K
ATTENUATE CHA 2
3 C6 30pF R37 R40 4.7/1W
ATTENUATE CHB 1N5353 CH B MODULE
4
1
2
3
4
5
6
7
8
+15 V R25 R9 470
5 R26 1.5K 10K
DATA CH A +24V R8
6 R43 RLY2
DATA CH B 200/1W
7 10K/1% NOTE 2 47K
+24V C28 T90N5D12-24
-24V 8 D4 C23 C19 SUPPLY GND
DIGITAL GND 9 D6
1N4148 6 150pF 330pF
DIGITAL GND 10 -
R27 1N4148 7 220pF SUPPLY GND
11 -24V -24V R15
MSSA2350 5 IC1B R5 C21
SW1 +
J6 OPA2604 5 R41 330pF 100
3
4
9
6
10K/1% +
26-48-1116 7
220K 6 1
R28 C4 - IC2B 1.5K +
VR2 OPA2604
NOTE 2 30pF 5K 2
JP2 -
R4 D8 IC4A
1
2 NOTE 1 1N4148 STK3152
8
7
5
3
4 1
5 2
6 R13 100K/1W/2% 3
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