Laney CD640 Schematic
Laney
Classic British Amplification
Newlyn Road, Cradley Heath, West Midlands. B64 6B£
www.laney.co.uk
CD640
Service Information
Line
SW1
5JACK1
-12dB(40dB)
5C8
47U/16V
5C9
47U/16V
Pad
5R20
22K
5R36
2.7K
5VR2
10KB
5R11
100
5C3
47U/16V
5R18
6.8K
Mic
5JACK2
SW1
5R17
6.8K
NC
GND
GND
GND
+15V
+48V
-15V
IC4
JP7X2
5C19
222
47U/50V
MAIN
E
M
5C10
5R19
2.2K
47U/50V
5C11
5R15
1K
1K
5R16
5D5
4148
5C18
222
5C17
222
5K1
SW DPDT
5C7
470U/16V
5D4
4148
5D3
4148
0V
5R13
560
0V
0.6V
-8V
5R21
4.7K
-8V
0.6V
5R22
10K
A1015
5Q2
4.7K
5R10
5Q1
A1015
5R9
10K
4148
5D7
4148
5D1
5D6
4148
22P
5C21
4148
5D2
5R26
22K
6
5
5R8
2.2K
2
31
Mid
5R49
15K
5C12
5C6
47U/16V
5R6
2.2K
5R7
47K
472
5C1
222
5R39
12K
5R4
4.7K
8
-38dB
7
1C3
4558
5C21
22P
22K
5R38
-38dB
5R25
4558
2.7K
IC3
4
2
3
5R48
15K
658
5R47
12K
8
4
4
47U/16V
5C24
-25dB -25dB
1
IC1
4558
Mon
5R5
10K
7
5C5
47U/16V
IC2
4558
5VR4
10KB
5R41
4.7K
5R35
10K
Level
5C16
103
5VR3
50KB
5VR7
10KB
50KB
5VR1
5C15
47U/16V
5C2
5C24
472
5R45
4.7K
5R43
22K
Bass
223
5R1
100K
5C14
103
Treble
5R42
4.7K
5R2
1K
IC1
47U/16V
4558
5
6
4.7K
5C20 100P
2
3
IC2
4558
5R3
100P
5C23
5C1
7
1
47U/16V
5C4
100
5R12
Fx
5VR5
10KB
-18dB
10K
5R37
-10dB
5R34
10K
Laney
CD640 Input Circuit
12/05/2003
SK.A97.148
Line
SW1
5JACK1
J?
PHONEJACK STEREO SW
Mic
5JACK2
SW1
NC
GND
GND
GND
+15V
+48V
-15V
IC4
JP7X2
5C8
47U/50V
5C10
5R19
2.2K
5C19
222
47U/50V
5C11
MAIN
E
M
-12dB(40dB)
47U/16V
5C9
47U/16V
5R17
1K
1K
5R18
R?
RES2
5C10
222
R?
RES2
5D5
4148
5C11
222
47U/16V
5C8
5C9
47U/16V
22K
5R31
22K
5R20
22K
Pad
5C7
470U/16V
5D4
4148
5D3
4148
5R46
5R16
10K
5R15
10K
0V
5R13
560
0V
0.6V
-8V
5R21
4.7K
-8V
0.6V
5R22
10K
A1015
5Q2
4.7K
5R10
5Q1
A1015
5R9
10K
4148
5D7
4148
5D1
5D6
4148
5R36
2.7K
22P
5C21
4148
5D2
5R26
22K
6
5
5R8
2.2K
2
31
5R11
100
5VR2
10KB
5C3
47U/16V
Mid
5VR4
10KB
5R41
4.7K
5R35
10K
5C16
103
5VR3
50KB
5VR7
10KB
50KB
5VR1
5C15
47U/16V
5C2
5C24
472
5R45
4.7K
5R43
22K
Bass
223
5R1
100K
5C14
103
5R42
4.7K
Level
5R2
1K
Treble
IC1
47U/16V
4558
5
6
4.7K
5C20 100P
2
3
IC2
4558
5R3
100P
5C23
5C1
7
1
47U/16V
5C4
100
5R12
Fx
5VR5
10KB
-18dB
10K
5R37
-10dB
5R34
10K
5R49
15K
5C12
5C6
47U/16V
5R6
2.2K
5R7
47K
472
5C1
222
5R39
12K
5R4
4.7K
8
-38dB
7
1C3
4558
5C21
22P
22K
5R38
-38dB
5R25
4558
2.7K
IC3
4
2
3
5R48
15K
658
5R47
12K
8
4
4
47U/16V
-25dB -25dB
5C24
1
IC1
4558
Mon
5R5
10K
7
5C5
47U/16V
IC2
4558
Laney
CD640 Dual Mono Input Circuit
12/05/2003
SK.8.A97.150
SK.8.A97.154
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