Yamaha STAGEPAS 500, Руководство по обслуживанию

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18
STAGEPAS 500
IC BLOCK DIAGRAM
NJM2068M-D TE1 (AAX62750)
Dual Operational Amplifier
CONTROL1 (1/3):
CONTROL2 (2/3):
CONTROL3 (3/3):
DSP:
1
2
3
4 -V
8
7
6
5
Output A
+V
Non-Inverting
Input A
-DC Voltage Supply
+DC Voltage
Supply
Output B
Inverting
Input B
Non-Inverting
Input B
Inverting
Input A + -
+ -
FA3641N (X8570A00)
PWM Control
POWER: IC803
IN --
IN +
OUT GND
Vref D7
R7
5.83 k
Ω
R6
4.12 k
Ω
R1
1 k
Ω
D6
--
+
12, 11, 10, 9
D1 Vcc Rch
COM
1
--
+
COM
6
--
+
COM
7
LB1407-E LF (AAX68710)
AC/DC Voltage Level Meter
CONTROL2 (2/3): IC604
2
3
4
5
6
8 1 13 14
7
1
2
3
4
5
6
7
14
13
12
11
10
9
8 7 8
Vcc
Rch
Vref
IN+
IN--
OUT
GND
D7
D6
D5
D4
D3
D2
D1
IC101, 201, 501, 701, 704
IC102, 104-106, 108, 202,
203, 205, 206, 302, 402,
502, 503, 702, 703, 901,
902
IC541, 542
IC103, 107, 204, 603, 1009,
1011
µ
PC494GS-T2-A (X8569A00)
Switching Regulator
POWER: IC802
ERROR
AMP
2
REFERENCE
REGULATOR
OSCILLATOR
0.1V
ERROR
AMP
1
+
–
+
–
1 2 3 4 5 6 7 8
16 15 14 13 12 11 10 9
Non-Inv.
Input
Non-Inv.
Input
Inv.
Input
Inv.
Input
Ref
Out
Feed-
Back
Output
Control
Dead-
Time
Control
GND
Vcc C
2
C
1
C
T
R
T
E
2
E
1
7
2
1 3
4
6 8
VCC CS
OUT
GND
IS + RT
FB
REF
OUTPUT
ENB
UVLO
16.5V/9V
0.8V
4V
3.0V
Dmax
70%
0.24V
FF
PWM
5V REF
8.5V~7.9V
0.82V~0.68V
15.5V
15.5V
6.5 A
0.9mA
+
–
+
–
+
–
+
–
+
–
+
–
+
–
5
–
–
–
+
5V VCC
ENB
R
S
QB
Q
OSC
RM RT
1
2
3
4
8
7
6
5
RTRch
FB
IS(+)/IS(-)
GND
CS
REF
VCC
OUT
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