Schematic Diagram - Vox AC15C1 Service Manual

SCHEMATIC DIAGRAM

C3
10pF 50V
C2
10pF 50V
C1
10pF 50V
JS1
TOP BOOST
R2
10K
BPJ-BBB-MONO
JS2
NORMAL
R3
C11
10K
R4
BPJ-BBB-MONO Ferrite
GND
C16
TCN2 CON1
R9
1 1
2 2 33K
3 3
R8
1Meg
J4E
R14
1K5
J1E
R22
470K
R24
820K
R23
330K
U1A
2
1
3
NJM2147
R25
120K
R26
47K
C21
560pF 100V
R27
1M
R18
10K
R7
22K
C22
10uF 350V
R6 R5
GND
100K
100K
C5 C4
C15
120pF 500V
10uF 350V
J2A
22nF 400V
J5A
C6
R1
C8
470pF 500V
120pF 500V
VR1
A500K
Normal Volume R34
J1B J1C
100K
J4B J4C
C67 VR2
A500K
TB Volume
V1
2 12AX7 7 J2D J5D
2 12AX7
R20 33K
J2E
Htr1a Htr2a
J5B
J4D R21
J2B
1Meg
J1D
C14
C7
R19
1K5
J1A
U4A
2
R46
1
NJM2147
3
47R
U3B
6
R37
7
NJM2147
5
47R
U3A
2
R36
1
NJM2147
3
47R
U2B
6
R35
7
NJM2147
5
47R
U2A
2
U1B
R33
6 1
NJM2147
7 3
NJM2147 47R
5
R31 47R
R30
330K
100pF C33
R29
4K7
R48 R47
Ferrite Ferrite
Ferrite Ferrite
R50 R53
R41
R28
C39 100pF
47R
1M
GND
C26
10uF 350V
GND
C32
V2
100nF 400V
7
C13
VR3
Htr1a Htr2a
56pF 500V
R40
Treble
R17 1M
C19
100K
220nF 63V
C20
J5C
J2C
22nF 400V
R15
R32 R42
VR4
C68
56K 1W 10K
A1M 47K
Bass
1nF 500V
C37 330pF 100V
R52
100K
U4B
6
7
AC15C2 is
NJM2147
5
C35 = 56nF 63V
R45 = 8K2
C35
100nF 63V VR5
B100K
R43
R45
220K
Use Screened cables for reverb leads
4K7
100pF C48
CON3 CON4
R64 R63
1 1
Ferrite Ferrite
2 2
Ferrite Ferrite
3 3 R62 R59
C40 100pF R39
REV SEND REV RETURN Q1
PIN3 connected to chassis J174
2 R38
10K
- 3 -
R75
22K 1W
R56
R51
100K
100K
C41
R81
VR8 10K
B220K
100nF 400V
Tone Cut
C38
C58
4.7nF 500V
C43
47pF 500V
R82
10K
100nF 400V
J8A J8B
J6B
J6A
V3
J8E J6E J6F J8F
2 12AX7 7
100nF 400V
R74
510K
Htr2a Htr1a
C50
VR7
B500K
R44 Depth
1K2
R49
1M
C34
100nF 400V
R55
3K9
U5A
2
R57
1
R93
NJM2147
3
56K
33K
R60
56K
R54 R58
22K 1K
C69
+27V
GND
3K3
Author: D Clarke
AC15C1 Preamp and Reverb
Checked By: Size: Number:
E Tomiyama A3 1
Date: 24/11/2009 Time: 17:37:31
File: V:\Altium\AC15ccV2\Releases\Release ISS3\Source\AC15C1.SchDoc
HT
VOUT+
VR9
A500K
Master Volume
VOUT-
TREM_OUT
R73
33K
R71
100K
C45 C46
R67
27K
22nF 400V
MF1
LND150N3-G
D C49
G
C44
S
10nF 500V
VR6
C2.2Meg
Speed
R68
Q2 C47
R66 R61
470R
2SC2910
10uF 350V
3.3Meg 1Meg
R72
10K
R69
10K
GND
+27V
R70
3K3
CON2 TCN3
R16 J3
1 1
Ferrite
2 2
3 3
R13
Ferrite
BJ-BBB-STEREO
R10 Ferrite
C12
22pF 50V
C10
22pF 50V
C9
22pF 50V
VOX R&D ltd.
64 Alston Drive
Bradwell Abbey
Revision:
ISS3
Milton Keynes
Sheet 1 of 2 Bucks, MK13 9HB