Schematic Diagrams - Yamaha CRX-140 Service Manual

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SCHEMATIC DIAGRAMS

CRX-040
CRX-140
MAIN 1/5
1
CRX-040/CRX-140
CRX-040
CRX-040/CRX-140
2
3
4
5
6
7
8
9
IC101: R5523N001A-TR-F
IC102, 108: RP102N331D-TR-F
High side switch IC
Voltage regulator
V
4
5
V
IN
OUT
V
DD
1
GATE
CURRENT
EN 1
CONTROL
LIMIT
FLAG
Vref
DELAY
3 FLG
UVLO
CE
3
10
THERMAL
SHUTDOWN
2
Pin No.
Symbol
GND
1
VDD
2
GND
3
CE
4
NC
VOUT
5
D
E
F
CRX-140
CRX-040
USB
CURRENT LIMIT IC
5.1
5.1
IC101
0
0
0.6
0.3
5.1
0
5.1
0
3.3
IC108
5.1
0
3.3
5.1
IC102
5.1
0
3.3
5.1
IC103, 104, 107: BD9870FPS-E2
High stand voltage 1 channel step-down switching regulator
VCC
1
VREF
PWM COMP
DRIVER
5
V
OUT
OSC
STBY
5
STBY
CTL
LOGIC
OUT
2
Current Limit
TSD
OCP
2
GND
INV
Error AMP
4
Description
Input Pin
Ground Pin
SS
Chip Enable Pin ("H" Active)
No Connection
FIN
Output Pin
GND
G
H
CRX-140
CRX-140
CRX-040
<14.5>
<14.5>
14.9
14.9
<3.2>
2.3
<14.5>
14.9
2.7
<7.3>
14.8
14.9
7.8
<14.3>
<14.5>
0.6
14.2
<13.7>
<3.3>
6.8
<6.5>
6.8
0
0
CRX-140
CRX-040
<19.8>
19.7
<9.4>
8.8
IC103
0
IC104
12.0
19.7
<19.5>
IC105
12.0
19.7
<19.5>
0
IC105: NJM7812FA
IC106: NJM431U
Adjustable precision shunt regulator
Voltage regulator
INPUT
OUTPUT
1
2
3
REFERENCE
ANODE
CATHODE
COMMON
I
J
K
<2.9>
8.5
<9.1>
15.4
19.1
<15.3>
16.5
<16.1>
<3.5>
3.3
2.5
0
<11.3>
<16.0>
11.8
16.5
0.5
0.5
0
0
0
-22.1
-34.2
-21.4
<-21.5>
IC107
J135
CRX-040
0
CRX-140
no_use
0
0
CRX-140
★ 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
CRX-040/CRX-140/NS-BP80
MAIN (1)
CB101
<3.1>
<2.9>
<0>
<7.3>
<9.4>
Page 72
J5
<9.1>
to SUB (2)_W1
9.4
9.4
9.4
9.4
19.1
9.4
9.4
0
0
<0.4>
0.5
Page 72
J4
<8.3>
8.4
to SUB (2)_W2
<7.8>
7.9
-34.2
0.5
<0.4>
CB103
0
0
0
0
<19.0>
19.1
<7.8>
7.9
8.4
<8.3>
0
< > the voltage is CRX-140.
< >内の電圧はCRX-140です。
● 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。
67

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