Aiwa xc-rw700 Service Manual page 53

IC BLOCK DIAGRAM - 7/7
QQ
3 7 63 1515 0
IC, M56788FP
Vm1
38
IN1+ 40
IN1- 37
36
OUT1
+
VM1(+)
34
-
-
VM1(-) 35
+
+
VM2(+) 32
-
-
VM2(-) 31
+
OUT2 30
IN2- 28
IN2+ 27
22
VREFO
VBS1
-
+
23
VREF
VREF
VBS2
41
REGB
VREG
42
REG+
TE
L 13942296513
IC, M62352GP
GND
20
www
BUFFER
OP AMP
1
.
Vss
(VrefL)
http://www.xiaoyu163.com
VBS1
+ R
-
E1
R
VBS1
Vrefm1
CH1
x5
VBS1
CH2
x5
VBS1
-
+
E2
1.25v
-
+
24 26
MUTE1
SS.GND
DI
Ao2 Ao1
17
18
19
-
-
8-BIT
D-A
R-2R D-A
1
Ch2
8-BIT
L
LATCH
.....
(12)
8-BIT
L
L
LATCH
Ch3 5
4
8-BIT
D-A D-A
R-2R D-A
- - -
x ao
y
4
2 3
i
Ao5
Ao3 Ao4
http://www.xiaoyu163.com
8
VBS1 VBS2
39 4
Vm1 Vm2
-
-
Vrefm2
VREFO
BIAS Hi:Sleep
VBS1
SLEEP
Low,Open
MUTE ON
1– 4
5CH
CH
TSD
25 7 11 29 33
MUTE2
Q Q
3 GND(4PINS) 6 7 1 3
CLK LD Do
16
15 14
12-BIT SHIFT REGISTER
D0 1 2 3 4 5 6 D7 D8 9 10 D11
ADDRESS
DECODER
(8)
.....
(12)
L
L L
8
6
7
D-A
D-A D-A
-
- -
u163
7
5
6
.
Ao6
Ao7 Ao8
-53-
2 9 9 4 2 8
Vm2
VBS2
-
+
R
E3
R
VBS2
+
CH3
-
-
x8
+
VBS2
+
CH4
-
-
x8
+
VBS2
-
+
E4
VBS2
+
CH5
-
-
x8
+
VBS2
-
+
E5
1 5 0 5 8 2 9 9 4
Ao12 Ao11
Vcc
13 12 11
- -
D-A D-A
12 11
L
L
(12)
L
L
10
9
D-A
D-A
m
-
-
co
8 9 10
Ao10 V
Ao9
DD
(VrefU)
9 9
5
IN3-
3
8 IN3+
2
OUT3
1 CH3IN
10 VM3(+)
9 VM3(-)
12
VM4(+)
13 VM4(-)
20 IN4-
19 IN4+
21 OUT4
VM5(+)
14
15 VM5(-)
17 IN5-
IN5+
18
OUT5
16
2 8 9 9