Alto DPA 6000, Service Manual

Page: 12 / 73

1
2
34
A B C D
4
3
2
1
D C B A
R1 4K
7
R2 4K
7
R3 10K
R4 10K
R5 10K
R6 10K
R7 10K
R8 10K
C1 100N
C2 10uF
/1
6V
TR
1
B
C
560
TR
2
BC5
60
DL
1
VO
L
U
M
E
DL
4
HU
M
C
ANC
E
L
DL
5
NOI
SE
GAT
E
DL
6
MU
L
T
IC
O
M
P
DL
7
P
R
ES
ET
S
DL
8
ED
IT
DL
9
CH
S
E
L
DL
10
CO
M
M
DL
11
SI
GNAL
1 2 3 4 5 6 7 8 9 10 11 12 13 14
CN
1
C
N
-HD7
X2
GND
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18 19 20
CN
2
C
N
-HD1
0X
2
GND
+5
V
D
SW
1
UP
SW
2
EN
T
E
R
SW
3
DOW
N
SW
4
SELEC
T
+5
V
D
GND
RE
D
G
R
GND
+5
V
D
+5
V
D
1
2
3
4
5
CN
3
C
ON5
1
2
3
4
5
CN
4
C
ON5
DP
A
-DI
S.
Sc
h
Ti
te
l
Si
ze
File
:
Da
te
:
Dr
aw
n B
y:
Sh
eet
Re
vi
si
on
M
ode
l No:
12-
A
pr
-2004
C.
C.
LI
N
A
LTO :
DP
A
4000 Di
spl
ay B
oa
rd 1
1
1o
f
D
PA
4000
VER
030728
A4
04_8