Ic Block Diagram - Yamaha Stagepas 500 Service Manual

STAGEPAS 500
QQ
3 7 63 1515 0

IC BLOCK DIAGRAM

FA3641N (X8570A00)
PWM Control
POWER: IC803
RTRch 1 8
2
FB 7
IS(+)/IS(-) 3
6
GND 4
5
LB1407-E LF (AAX68710)
AC/DC Voltage Level Meter
CONTROL2 (2/3): IC604
TE
L 13942296513
1 14
Vcc
2
Rch 13
3
Vref 12
IN +
4
11
IN --
5
10
OUT
6 9
GND
7 7 8
8
NJM2068M-D TE1 (AAX62750)
Dual Operational Amplifier
CONTROL1 (1/3): IC101, 201, 501, 701, 704
CONTROL2 (2/3): IC102, 104-106, 108, 202,
203, 205, 206, 302, 402,
502, 503, 702, 703, 901,
902
CONTROL3 (3/3): IC541, 542
DSP: IC103, 107, 204, 603, 1009,
1011
www
Output A
1 +V 8
Inverting
2 7
Input A
- +
Non-Inverting
3 6
+ -
Input A
.
-DC Voltage Supply
4 -V 5
18
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（ICブロック図）
REF 7
5V VCC
ENB
5V REF
CS
REF
VCC
3.0V
+
OUT
–
FB 2
Dmax
70% OSC
RM RT
+
–
RT
Vref Vcc Rch
3 1 2
D7
D6
D5
D4
IN +
4
D3
IN --
5
D2
D1
6 7
OUT GND
+DC Voltage
Supply
x ao
Output B
y
Inverting
Input B
i
Non-Inverting
Input B
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8
CS
8
6.5 A
0.82V~0.68V
15.5V
+
–
UVLO
15.5V
+ 0.9mA
+
–
–
16.5V/9V
8.5V~7.9V
0.8V
ENB
4V
–
–
– PWM
+
FF
R
QB
0.24V
Q
– S
+
1 3
IS +
12, 11, 10, 9
Q Q
D7 D6
3 6 7 1 3
14 13
R7 R6 R1
5.83 kΩ 4.12 kΩ 1 kΩ
-- -- --
COM COM COM
7 6 1
+ + +
µPC494GS-T2-A (X8569A00)
Switching Regulator
POWER: IC802
Non-Inv. Inv. Ref Output
Input Input Out Control Vcc
16 15 14 13 12
+
–
ERROR
REFERENCE
AMP
2 REGULATOR
ERROR
AMP OSCILLATOR
+
–
1
0.1V
u163
1 2 3 4 5
Non-Inv. Inv. Feed- Dead-
C
T
Input Input Back Time
.
Control
2 9 9 4 2 8
VCC
6
+
–
5
OUT
OUTPUT
GND
4
D1
1 5 0 5 8 2 9 9 4
8
C E E
2 2 1
11 10 9
m
co
6 7 8
R GND C
T 1
9 9
2 8 9 9