A-905TX
MICROPROCESSOR CONNECTION DIAGRAM
Q701:HD404316E04H
1
2
3
4
5
6
7
8
9
10
11
34
35
36
37
38
39
40
41
42
43
44
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
SBASS-3
SBASS-2
SBASS-1
NC
NC
NC
NC
INP MUT
POWER2
VOL DOWN
VOL UP
TEST
RESET
OSC1
OSC2
GND
AVSS
SEL IN-1
SEL IN-2
KEY IN
905/909
RI OUT
N
C
N
C
PR
O
T
E
C
T
SB
A
SS
L
E
D
A
SB
A
SS
L
E
D
B
N
C
C
L
K
L
A
T
D
A
TA
C
E
N
C
N
C
N
C
M
U
T
L
E
D
R
E
L
A
Y
R
E
M
IN
PO
FF
V
C
C
A
V
C
C
D
IR
E
C
T
H
P I
N
R
I I
N
Q708
Q912
+5V
+5.6V
S401
PHONES
P583
Q704
+5V
ACOUSTIC
PRESENCE
INPUT
SELECTOR
R732
Q703
Q301
TC9273N-010
Q707
74HC595
GREEN
RED
Q702 TA7291S
Q505,Q506
MICROPROCESSOR
Q701
HD404316-E30H
U701
D723
Q415-Q418
R459
SPEAKER
RELAY
SWITCH
POWER FAILURE
DETECTOR
SOURCE DIRECT
SWITCH
PROTECTER DETECTOR
CIRCUIT
ACOUSTIC
PRESENCE
INDICATOR
ACOUSTIC
PRESENCE CIRCUIT
VOLUME
INDICATOR
SOURCE INDICATOR
DRIVER
INPUT SELECTOR
SYSTEM RESET
BUFFER
MOTOR VOLUME
DRIVER IC
POWER AMPLIFIER
CIRCUIT
POWER AMPLIFIRE
CONTROL
INPUT MUTING
VOLUME
REMOTE SENSOR
www . x i a o y u 1 6 3 . c o m
Q Q 3 7 6 3 1 5 1 5 0
9
9
2
8
9
4
2
9
8
T E L 1 3 9 4 2 2 9 6 5 1 3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
