Yamaha T3n, Service Manual

Page: 21 / 107

T5n/T4n/T3n
21
INPUT
OUTPUT
GND
– +
– +
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
• NJM4558M (TE2) (X5804A00)
Operational Amplifier
INT: IC601, 604-612
• NJM431U (TE1) (X6770A00)
Variable Shunt Regulator
PAT: IC202, 203
• NJM79L06UA (TE1) (X7917A00)
Regulator -6V
INT: IC413
• NJM7815FA (XD853A00)
Reg15V
PST: IC105, 108, 109
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
circuitry
V REF
3 k
5 k
COM
S
S
R
50
∝
A
• UC3525AN (X5952A00)
Switching Regulator
PST: IC101
1
2
3
4
8
7
6
5
A OUTPUT
V-
A -INPUT
A
- +
B
+ -
A +INPUT
V+
B +INPUT
B OUTPUT
B -INPUT
•
µ
PC4570G2-E1-A (X7351A00)
Dual Operational Amplifier
INT: IC602, 603
CATHOD
REFERENCE
ANODE
(A)
CATHODE
(K)
REFERENCE (R)
ANODE
COMMON
OUTPUT
INPUT
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