Yamaha YMC-700 Service Manual page 85

A B C
MAIN 2/5
1
Q Q
7
3
2
3
4
5
CB50
0
5.0
T E
L 1 3 9 4
2.3
2.0
3.3
3.3
3.3
3.3
6
3.3
3.3
1.5
0
1.7
Page 82 F9 0
1.7
to DIGITAL_CB384
0
1.7
0
1.7
0
1.7
0
1.7
7
0
3.3
3.3
0
8
9
w w w
.
10
D E F
1 5 1
6 3
5.0
5.0
-5.0
2.7
IC55
2.7 2.7
5.0
0
IC55
0 0
0
2 2 9 6 5 1 3
to MAIN 1/5
CB51
x a o
y
i
http://www.xiaoyu163.com G H
YMC-700 YMC-500
5
0 8
SUB
WOOFER
0.8
0
0
IC54
IC54
0.8 0
0
0
0
-5.0
-5.0
0
0
-5.0 5.0
DIGITAL AMPLIFIER
12.0 12.0
3.3 0
0 0
0 28.0
28.0
3.3
1.7 14.0
3.3
0
0
0
0
14.0
0 28.0
0 0
0
0
0 28.0
14.0
0
0 0
1.7 0
3.3 14.0
28.0
0
28.0
0
0
0
12.0 0
12.0 12.0
DIGITAL AMPLIFIER
12.0 12.0
0
3.3
0 0
Q Q
28.0 3 7 6 3
0
28.0
3.3
1.7
14.0
3.3
0
0
0
0
14.0
0 28.0
0 0
0 0
0 28.0
0 14.0
0
0
1.7 0
3.3 14.0
0 28.0
28.0
0
0 0
12.0 0
12.0 12.0
DIGITAL AMPLIFIER
12.0 12.0
3.3 0
0 0
0 28.0
28.0
3.3
0 0
3.3 0
0 0
0
0
0 28.0
0 0
0
0 28.0
14.0
0
0 0
0
1.7
14.0
3.3
28.0
0
0 28.0
0 0
12.0
12.0 12.0
u 1 6 3
.
I J K
2 4
9 9
to MAIN 3/5
OTW
SD
M1
M2
M3
RESET_AB
RESET_CD
PWM_D
PWM_C
CENTER
PWM_B
SURROUND L
PWM_A
0
14.0
14.0
1 5 1 5 0 8 9 2
14.0
L
14.0
SURROUND
14.0
R
14.0
14.0
L
14.0
14.0
R
14.0
0
FRONT L
m
c o
L M N
YMC-700/YMC-500
2
IC51-53: TAS5342LDDV 8 9 9
100 W stereo digital amplifier power stage
21 VDD
4
Under-
voltage
2 4
Protection
Internal Pullup VREG 12 VREG
Resistors to VREG
5 Power
On
15
Reset
11 AGND
Protection
14 and
I/O Logic
13 Temp.
Sense 10 GND
7
Overload
Isense 9 OC_ADJ
17 Protection
23 GVDD_D
24 BST_D
26, 27 PVDD_D
PWM Gate
Timing 28 OUT_D
18 Ctrl.
Rcv. Drive
BTL/PBTL-Configuration
Pulldown Resistor
29 GND_D
22 GVDD_C
33 BST_C
32 PVDD_C
PWM Gate
16 31 OUT_C
Ctrl. Timing
Rcv. Drive
BTL/PBTL-Configuration
Pulldown Resistor
30 GND_C
1 GVDD_B
34 BST_B
35 PVDD_B
PWM Gate
36 OUT_B
8 Ctrl. Timing
Rcv. Drive
BTL/PBTL-Configuration
Pulldown Resistor
37 GND_B
44 GVDD_A
43 BST_A
40, 41 PVDD_A
Gate
PWM
6 Ctrl. Timing 39 OUT_A
Drive
Rcv.
BTL/PBTL-Configuration
Pulldown Resistor
38 GND_A
CENTER
4 9 8 2 9 9
SPEAKERS
FRONT
IC54: NJM4565M
Dual operational amplifier
V+
8
2, 6
–INPUT OUTPUT
1, 7
+INPUT
3, 5
V–
4
IC55: NJM2904M (TE3)
Single supply dual operational amplifier
1 8 1. A OUTPUT
2. A-INPUT
A
3. A+INPUT
2 7
4. GND
5. B+INPUT
3 B 6
6. B-INPUT
7. B OUTPUT
4 5 8. V
+
★ All voltages are measured with a 10MΩ/V DC electronic voltmeter.
★ Components having special characteristics are marked
and must be replaced
with parts having specifications equal to those originally installed.
★ Schematic diagram is subject to change without notice.
85