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1
2
Pre-Amp Audio Input
Fault
SK11
+15V
Q60
1
BC859B
2
3
Q7
4
BC856B
5
6
R208
7
8
470R SM
D
WTRAP2.5X8V
-15V
SW1NA
2PCO_VERT
Pre_Outputs
R35P
SK1A
R80P 0R0 SM
0R0 SM
1
L&R Inputs
F
PRE1
ATE_PAD
N
PRE2
ATE_PAD
R65P
SK1B
C28
0R0 SM
470P SM
RLY5NA
RLY 51SB12T
SW1NC
SW1NB
RLY5NB
2PCO_VERT
SCREEN
SCREEN
SCREEN
SCREEN
C
2PCO_VERT
RLY 51SB12T
3rd Ch. Power
SKT1
1
ACDet
+SUP
Replace with same
!
2
+15V
type component only
3
4
5
6
-SUP
JST 6W HEADER
Chassis Connection
FIX1
FIX4 FIX5 FIX6 FIX7
FIX3
SH1
FIX8 FIX9
EMC Shield
L
1
C46
SK4
4N7 MAINS
E
Y2
B
C47
EC3
TX WIRE CLIP
4N7 MAINS
N
RLY6A
NEUTRAL
ATE_PAD
EMCMAINS
RLY SPDT 24V
PD5
TXN
TOOLING
ATE_PAD
FD_2
TH3
Dark Grey
FIDUCIAL
PTHMA NS
Orange
FD_1
CAGECLAMP3
F5
TH2
PTHMA NS
FIDUCIAL
PD7
PD8
SJB
TOOLING
TOOLING
AS4A_115V
S J B
Y1
SJB
TX W RE CL P
DDM
F4
PCB MATERIAL
FR4, 2 OZ Cu
DDH
AS2A5
FR4_2OZ
A2 Horizontal
Paper Marker
A
Kit Masks:
DD_A2H
DDV
DD1
1) For Integrated Amp use...
N, F inclusive
A2 Vertical
Drilling Detail
Paper Marker
Issue Box
2) For Power Amp use...
DD_A2V
DD_ISSUE
P,S,F inclusive
BARCD
BARCODE LABEL
BARCODE
1
2
3
VI Cut-out latch
SGND1
+
ATE_PAD
VIRESET1
ATE_PAD
R128
PWRAMPL
l829ct3_6 SCH
22K SM
R26
VI Latch
VI Cut
22K SM
ABiasRef
Input
Output
LOut
F
ABSUP
R47
68K SM
N
PWRAMPR
l829ct4_6 SCH
VI Latch
VI Cut
ABiasRef
Input
Output
R83P 0R0 SM
ROut
R48
180R SM
-SUP
PCB
SH2
EMC Shield
PCB
L829PB
TX1
ACDet
L831TX
Fault
ORANGE
BLUE
230V
EMCPHONO
-15V
BROWN
GREEN
115V
+
BLACK
BLUE
SK9
0V
D49
Green
GRN/YEL
CAGECLAMP1
TX2
BAS16W SM
L825TX
0V
7
13
ACD1
RLY DPDT 12V
5
ATE_PAD
11V
D18
115V
TX115
ATE_PAD
RLY7A
1N4003F
SK7
C44
1
0V
Blue
2
3
4N7 MAINS
12
TX230
D19
ATE_PAD
2
1N4003F
11V
230V
11
ACD2
ATE_PAD
DDD
Designators ending in...
Drilling
N - For integrated amp only,
Detail
P - For power amp only,
DR LL_DWG
R - For power amp with remote only,
UPDTBX
S - For power amp with no remote
Update Box
only,
UPDATE_BOX
X - Other end of wire link.
PS
Photo Strip
PHOTO_STR P
3
4
5
4
HP1
R4
5
L
SK5
330R 1W CF
2
R224
LHC
HP2
R5
3
RHC
1
330R 1W CF
10R MF
HPSKT
6
7
RLY4A
R
SPKB1
RLY SPST SPKR
ATE_PAD
CAMCON_G
CAMCON_G
RLY2A
SK2A
SK2B
RLY SPST SPKR
Top+
Bot+
SK2C
CAMCON_G
SPKA1
CHASS
ATE_PAD
SPKB2
Top-
Bot-
RLY3A
ATE_PAD
RLY SPST SPKR
RLY1A
SK3A
SK3B
RLY SPST SPKR
Top+
Bot+
SK3C
CAMCON_G
SPKA2
CHASS
ATE_PAD
+UREG
Top-
Bot-
Fan
LVProt
FAN
RVProt
Powerup
ACDet
Fault
RESET
Q_57
CONTROL
l829ct2_6 SCH
Q42
Reset Circuit
R202
BC847B
100K SM
D42
BAS16W SM
Q_48
R216
+
1K0 SM
R35
1K0 SM
D44
D45
24V 3W SM
1N4003F
HS2NA
+UREG
TO220HS08REG
+8V
UREG1
I
O
Vin
Vout
ATE_PAD
Z7
7808
+
Digital Supply
FIX2
C94
10N SM
DRAWING TITLE
Alpha 10 Amp Main
Circuit Diagram
23425
Notes:
A & R Cambridge Ltd.
Pembroke Avenue
Denny Industrial Centre
Waterbeach
Filename
Cambridge CB5 9PB
J:\PROJECTS\A10amp\L829pb_Main_PCB\Circuits_&_PCB\wip\L829ct1_6.prj
4
5
6
LOut
!
!
ROut
D1
15V 400MW
Q1
2SC5248
HS6N
TO220HS23TR
+PRE
+15V Regulator
Z1
LM317T
+15V
I
O
Vin
Vout
HS1A
TO220HS13REG
+
+
+
C101
47N PE
+
+
+
HS3A
Z2
LM337T
I
O
Vin
Vout
-15V
TO220HS23REG
-PRE
-15V Regulator
Q4
2SA1964
HS8N
Q12
TO220HS23TR
D2
BC847B
15V 400MW
!
!
+UREG
Q_55
Q39
Q_56
R232
Fan
BC849B
1K0 SM
PDIG1
ATE_PAD
+
LOut
ROut
97_1085
SJB
22-9-97
Hardware Remote RX
97_1086
SJB
26-9-97
C6 & C8 change from 10u to 22u
97_1096
SJB
22-10-97
No Change
97_1102
SJB
11-11-97
HS2N change to larger size
98_1042
SJB
9-7-98
PCB Issue 2 to 3 changes
ECO No.
INITIALS
DATE
Drawn by:
Date Printed
SJB
10-Jul-1998
6
7
8
+SUP
PSUP1
ATE_PAD
!
D
+ C18
10M EL 63V
+
TXGND
ATE_PAD
SK8
1
Grey
2
Light Green
3
Light Green
4
G ey
AC1
PGND1
ATE_PAD
ATE_PAD
AC2
ATE_PAD
ACDet
C
+
+ C19
10M EL 63V
!
NSUP1
ATE_PAD
+15V
-SUP
B
C38
680P PP
Q59F
Z3C
Z4C
TL072 SM
2SC5248
TL072 SM
FANOUT
ATE_PAD
C39
SKT2
SKT3
680P PP
2
1
1
2
-15V
+5V
Control Supply
MOLEX2MV
PMPU1
MOLEX2MV
Z6
+8V
7805
ATE_PAD
I
O
Vin
Vout
+
2
A
3
4
5
6
DESCRIPTION OF CHANGE
ISSUE
Sheet
1
of
5
L829CT1
DRAWING NO.
7
8