Vox AC15C1 Service Manual page 8

1 2
A
C29
HTR1a
100nF
R12
3K3
C25
SG1
R11
3K3
C17
C27
HTR2a
100nF
VOUT+
J10A J9A
R89
220K
B
TREM_OUT
R86
220K
VOUT-
J10I J9I
R85
1Meg
C
GND
+27V +27V +27V
U1C U2C U3C
10nF 100V
C18
D NJM2147 NJM2147 NJM2147
GND
10nF 100V
-27V -27V
C200
-27V
1 2
3
C30
100nF HT
D1
KBU4A
C28
100nF
J10B
V4
J9B
Tube EL84 9 R76
R65
2
470R 1/2W
3K3
Htr1 Htr2
J9C J10C
J9D J10D
J9E J10E
J9F J10F
R77 R79
J9G J10G
120R 5W
3K3
J9H J10H
C54
2
220uF 50V
9
GND
Tube EL84
R83
470R 1/2W
V5
+27V +27V
10nF 100V
U4C U5C C42
NJM2147 NJM2147
GND
10nF 100V
C201
-27V
-27V
3
4 5
R80
1K 5W
C53
C62
C52
C59
10nF 500V
F1
T250mAL
GND
TCN1 CON5
LED1
1 1
RED LED
2 2
POWER ON
!
J7
T2 16 Ohm
1/4" Spade ISS6
J11 8 Ohm
1/4" Spade
J12
OP TX
1/4" Spade
P1
Chassis Earth
AC Reactive Attenuator
Drawing Number:
VD-A30015
CHANGE HISTORY
6 23/06/15 Update ATT Wiring,C581 & R641 added
5 10/04/15 Parts Added For Attenuator Integration
Issue Date Change
4 5
6
1nF 1KV
1nF 1KV
C61 C65
D4 D7
R88
180R 5W
J19
1N4007 1N4007 1/4" Spade
C60 C64
R87
180R 5W
1nF 1KV 1nF 1KV
J18
1/4" Spade
D3 D6
J23
1N4007 1N4007
1/4" Spade
J22
J17
1/4" Spade
J20
STANDBY
1/4" Spade
1/4" Spade
!
J21
R92
1/4" Spade
5K6 1W
D10
Diode 1N4007
D9
+27V
R84
220R 1/2W
1N4007
C57 C63
D5
1000uF 35V 1000uF 50V
27V 1.3W
GND
C55 C56
D2
1000uF 35V 1000uF 50V
27V 1.3W
D8
R78
220R 1/2W
-27V
1N4007
USE EXISTING DPDT
J16
R641
ISS6
Ferrite
ISS6
1/4" Spade
C581
4.7nF 500V
ISS6
J14
ISS5
1/4" Spade
P5
Designed By: Checked By:
D Clarke *
VOX Amplification ltd.
1 Harrison Close
DC
Knowlhill
Milton Keynes
DC
Bucks, MK5 8PA
Signed
6
7 8
!
! !
MAINS TRANSFORMER
F4
1
L
3
SCK15105MSY E
2
SURGE GUARD 1
N
!
Power Switch
!
Chassis Earth
!
F3
2R2 FUSIBLE
!
F2
T6.3AL
Htr2 Htr1
R90 R91
220R 1/2W 220R 1/2W
J13
BPJ-BBB-MONO
J15
BPJ-BBB-MONO
J24
Not Fitted
1/4" Spade
J25
SAFETY CRITICAL COMPONENT
Not Fitted ! REPLACE ONLY WITH THE SAME
!
TYPE & RATING
1/4" Spade
IF IN DOUBT CONTACT SUPPLIER
Date:
09/09/2015
Title Revision: Sheet
AC15CH Power
7 2 of 2
7 8
A
B
C
D