Yamaha TSX-130 Service Manual page 61

A B C
POWER 1/2
1
2
3
4
CB1
CB2 CB3
W11A W11B
5
POWER (7)
6
AC IN
7
8
POWER (1)
9
10
D E F
TSX-130/TSX-120 TSX-130
(69.7)
(165.2) (165.2)
(0)
(235.8)
(69.3)
(235.8)
(235.8)
(164.9)
(1.2)
(0)
CONTROL (1.2)
IC (1.4)
(3.2)
(0)
(5.1)
(0.6)
(0.6) (1.0)
(0.2) (16.7) (16.7) (0.2)
(0.5)
(1.3)
(2.1)
(0)
(0.8)
(2.9) (0.6) (16.7)
(0)
Primary ground
IC1: L6566BTR
Multi mode controller for SMPS
VREF SS AOMP VFF
10 14 9 15
15 uA
6.4V
TIME - OVPL
OVP
SOFT-START OUT OFF2
LOW CLAMP 1 mA
HV 1 &
& DISABLE +
FAULT MNGT
7.7V
LINE VOLTAGE Q
FEEDFORWARD
Reference
VOLTAGE
voltages
REGULATOR 7
Vcc 5 Internal supply LEB
&
ADAPTIVE UVLO UVLO 1.5 V
- + - + + -
Vcc VIn PWM OCP Vcc
UVLO_SHF
400 uA
+
6
FMOD
- - Hiccup-mode
14V
OCP logic
5.7V BURST-MODE
+
OCP2
4
OSC 13 OSCILLATOR R
Q DRIVER
MODE SELECTION S
&
MODE/SC 12
TURN-ON LOGIC
TIME
50 mV ZERO CURRENT
- OUT OVPL
100 mV DETECTOR
4.5V
ZCD 11 +
OFF2
-
OVERVOLTAGE OVP
LATCH
PROTECTION +
8
IC_LATCH
16 -
AC_OK AC_FAIL
DISABLE
15 uA 0.450V
3 V +
0.485V UVLO
3
GND
G H I
TSX-120
0
13.3
0
11.1
(3.2)
(0)
10.0
0 14.6
11.7
(16.7)
(0)
11.7
0 11.7
11.7
0
40.5 40.5
41.5
39.9
18.2
18.5
0
0 3.4
0
AC35.4
2.7 12.3
11.8
7.1
3.0
0
3.3
0
3.2
0
0
AC7.1
IC11: BD9870FPS-E2
IC4: NJM431U
High stand voltage 1 channel step-down switching regulator
Adjustable precision shunt regulator
VCC
1
CS
VREF
PWM COMP DRIVER
1 2 3
OSC
REFERENCE ANODE CATHODE
STBY
5
STBY
GD
CTL
LOGIC OUT
2
OCP
TSD
INV
Error AMP
4
GIS
SS
FIN
GND
J K
IC11
10.0
2.5
0
14.6 11.9
IC13
11.9
14.6
0
1.6
5.2
5.3
5.2
5.3
0.4
0 5.2
0
40.5 32.8
33.3
33.3
16.6
0
1 2
E
3.3
2.7 14.0 0
14.0 13.9 7.6
13.3
0
7.0
7.0
0
IC13: NJM7812FA
POINT E 1 / Q8, 2 / Q9
Voltage regulator
INPUT
Q8 (E) 1
OUTPUT
Q9 (C) 2
COMMON
POWER cable ON
★ All voltages are measured with a 10MΩ/V DC electronic voltmeter.
★ Components having special characteristics are marked
and must be replaced
with parts having specifications equal to those originally installed.
★ Schematic diagram is subject to change without notice.
L M N
TSX-130/TSX-120
Page 59 M2
to CD_CB610
TSX-130
W2
Page 60 L5
to MAIN_CB214
W3
Page 60 L5
to MAIN_CB209
W4
Page 60 L4
to MAIN_CB215
W5
Page 60 L3
to MAIN_CB208
Q8 (E) 1
Q9 (C) 2
POWER cable OFF POWER cable ON
● 電圧は、内部抵抗 10MΩの電圧計で測定したものです。
● 印のある部品は、安全性確保部品を示しています。部品の交換が必要な場合、
パーツリストに記載されている部品を使用してください。
● 本回路図は標準回路図です。改良のため予告なく変更することがございます。
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