Ic Block Diagram - Yamaha STAGEPAS 300 Service Manual

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IC BLOCK DIAGRAM

M65850FP (AAX62760)
Digital Echo
FILTER: IC602
NC
1
LPF1 IN
2
LPF1 OUT
3
OP1 OUT 4
OP1 IN
5
CC1 6
CC2 7
7
GND
8
LB1407-E LF (AAX68710)
AC/DC Voltage Level Meter
VR: IC604
TE
L 13942296513
Vcc 1
2
Rch
Vref 3
IN +
4
IN --
5
OUT
6
GND
7
7
NJM2068M-D TE1 (AAX62750)
Dual Operational Amplifier
FILTER: IC103, 107, 204, 603
INPUT: IC101, 201, 501, 701
VR: IC102, 105, 106, 202, 203, 302,
402, 502, 503, 702, 703
Output A
1
Inverting
2
Input A - +
www
Non-Inverting
3
Input A
-DC Voltage Supply
4 -V
.
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IC
CLOCK
NC
16 OSCILLATOR
Vcc REF 13
15
1/2 Vcc
CLOCK
14
REF
13
16
NC
AUTO
OP2 IN
12 RESET
11 OP2 OUT
1
NC
LPF2 IN
10 8
LPF1
LPF2 OUT
9
2
LPF1 IN LPF1 OUT
Vref
14
D7
13 D6
12 D5
D4
11
IN +
4
10 D3
IN --
5
D2
9
D1
8
8
6
OUT
TOP249Y (AAX63650)
Switching Controller
POWER: IC802,804
1
3
5
2
4
+DC Voltage
+V 8
Supply
1: CONTROL
Output B 2: LINE-SENSE
7
3: EXTERNAL
Inverting
CURRENT LIMIT
6
+ -
Input B
4: SOURCE
Non-Inverting
5: FREQUENCY
5
x ao
Input B
7: DRAIN
y
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8
CC2 OP2 IN OP2 OUT LPF2 IN
14 7 12 11
D / A
DO1
CLOCK
MO
MAIN CONTROL
RESET
MI
D1 DO0
A / D
3 4 5 6
OP1 OUT OP1 IN CC1
Q Q
Vcc Rch D7 D6
3 6 7 1 3
3 1 2 14 13
R7 R6
5.83 kΩ 4.12 kΩ
-- --
COM COM
7 6
+ +
7
GND
V C
CONTROL (C) 1
Z C
SHUNT REGULATOR/
ERROR AMPLIFIER
–
+
5.8 V
7 I FB
V I (LIMIT)
CURRENT
LIMIT
ADJUST
ON/OFF
V BG +V T
EXTERNAL
3
CURRENT LIMIT (X)
LINE-SENSE (L) 2
1 V
V BG
OV/UV
u163
LINE
DC MAX
SENSE
FREQUENCY (F) 5
.
R E
2 9 9 4 2 8
LPF2 OUT
10 9
LPF2
20Kbit
SRAM
8 15
GND Vcc
12, 11, 10, 9
D1
1 5 0 5 8 2 9 9 4
8
R1
1 kΩ
--
COM
1
+
0
INTERNAL
1 SUPPLY
+
SOFT START
5.8 V
–
4.8 V
INTERNAL UV
COMPARATOR
SOFT
START
÷ 8
SHUTDOWN/
AUTO-RESTART
m
HYSTERETIC
STOP LOGIC THERMAL
SHUTDOWN
STOP SOFT-
START
co
D MAX
DC MAX
CLOCK
HALF
S Q
SAW –
FREQ.
R
+
OSCILLATOR WITH JITTER
PWM
COMPARATOR
LIGHT LOAD
FREQUENCY
REDUCTION
STAGEPAS 300
9 9
2 8 9 9
7 DRAIN (D)
–
+
CURRENT LIMIT
COMPARATOR
CONTROLLED
TURN-ON
GATE DRIVER
LEADING
EDGE
BLANKING
4 SOURCE (S)
15