Yamaha PC2001N, Руководство по обслуживанию

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PC6501N/PC4801N/PC3301N/PC2001N
17
■
IC BLOCK DIAGRAM
（IC ブロック図）
• NJM4558M (TE2) (X5804A00)
IN: IC601~IC606
• NJM2068M-D (TE2) (X3505A00)
IN: IC402~IC407, IC410
• M5238AFP (X6317A00)
IN: IC401
OP AMP
• NJM13600M (TE2) (X5042A00)
IN: IC409
OP AMP
• TC7WH14FU (XY806A00)
IN: IC804
INVERTER
• DS36276M (X2155A00)
IN: IC802
TRANSCEIVER
• UC3525AN (X5952A00)
PS: IC101
REGULATOR
– +
– +
1
2
3
4
8
7
6
5
Output A
Non-Inverting
Input A
Ground
+DC Voltage
Supply
Output B
Inverting
Input B
Non-Inverting
Input B
Inverting
Input A
– + – +
A B
1 AMP BIAS INPUT A
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
DIODE BIAS A
+INPUT A
–INPUT A
OUTPUT A
V–
BUFFER INPUT A
BUFFER OUTPUT A
AMP BIAS INPUT B
DIODE BIAS B
+INPUT B
–INPUT B
OUTPUT B
V+
BUFFER INPUT B
BUFFER OUTPUT B
1
2
3
4
7
6
5
8 1A
3Y
2A
GND
Vcc
1Y
3A
2Y
1
2
3
4
R
8
7
6
5
RO
DE
DI
V
CC
DO/RI
DO/RI
GND
RE
D
Reference
Regulator
UVLO
Lockout
OSC
Flip
Flop
PWM
Latch
NOR
NOR
Error
Amp
1 INV. INPUT
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
N.I. INPUT
SYNC
OSC. OUTPUT
C
T
R
T
DISCHARGE
SOFT-START
V REF
+V
IN
OUTPUT B
V
C
GROUND
OUTPUT A
SHUTDOWN
COMPENSATION
15 +V
IN
12
16 4
3
6
5
9
1
2
13
11
14
GROUND
SYNC
R
T
C
T
COMPENSATION
INV. INPUT
N.I. INPUT
V
C
OUTPUT A
OUTPUT B
8 SOFT-START
10 SHUTDOWN
7 DISCHARGE
V REF
OSC
OUT
To Internal
circurity
V REF
3 k
Ω
5 k
Ω
COM
S
S
R
50
µ
A
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