Yamaha YSP-4300 Service Manual page 135

A B C
YSP-CU4300 YSP-CU3300
POWER 2/2
1
0.20mA 0.23mA
2
INPUT VOLUME - VOLUME +
DGND
3
4
5
C901
0.1/50(F)
C902
0.1/16
C903
100/6.3
6
7
8
9
10
D E F
JB-PH
KEY1
4
DGND
3
Page 130 M3
3.3 S3.3
2
to DIGITAL_CB703
STBY_SW
1
W951
(On/Standby)
Key detection for A/D port
STANDBY/ON
Key input (A/D) pull-up resistance 10 k-ohms
0 Ω
POWER (3)
Detected voltage value
0 – 0.165 V
at 131 pin
POWER (3)
A/D value
0 – 5
(3.3 V=255)
KEY1
INPUT
011BT267GINK
V901
R982
220K
C2412K(Q/R/S)
C904
1 0 0 0 P ( B ) Q 9 0 1
C905 R902
no_use
100
C906
no_use
C907
no_use
TO INPUT
Page 131 L3
to INPUT (1)_CB7
G H
+4.3 kΩ +6.8 kΩ ∞
0.825 – 1.155 V 1.155 – 1.485 V 3.2 – 3.3 V
25 – 35 35 – 45 100
VOLUME + VOLUME - Key off
POWER (2)
STATUS
indicator
R911
POWER LED(GREEN)
820
AMBER
R912
SD LED(AMBER)
680
R913
HD LED(BLUE)
1.8K
BLUE
SURROUND
indicator
I J K
POWER (2)
Page 131 F7
to INPUT (1)_CB3
Page 131 F9
to INPUT (1)_CB9
RESISTOR
REMARKS PARTS NAME
NO MARK CARBON FILM RESISTOR (P=5)
CARBON FILM RESISTOR (P=10)
METAL OXIDE FILM RESISTOR
METAL FILM RESISTOR
METAL PLATE RESISTOR
FIRE PROOF CARBON FILM RESISTOR
CEMENT MOLDED RESISTOR
SEMI VARIABLE RESISTOR
CHIP RESISTOR
CAPACITOR
REMARKS PARTS NAME
NO MARK ELECTROLYTIC CAPACITOR
TANTALUM CAPACITOR
NO MARK CERAMIC CAPACITOR
CERAMIC TUBULAR CAPACITOR
POLYESTER FILM CAPACITOR
POLYSTYRENE FILM CAPACITOR
MICA CAPACITOR
P POLYPROPYLENE FILM CAPACITOR
SEMICONDUCTIVE CERAMIC CAPACITOR
★ 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
YSP-CU4300/YSP-CU3300/NS-WSW160
YSP-CU3300:ZE37250
YSP-CU4300:ZE37240
W971
IR_OUT
DGND
JB-PH
SAN-PH
POWER (4)
POWER (4)
YSP-CU3300:ZE37270
YSP-CU4300:ZE37260
W981
IR_OUT
DGND
JB-PH
SAN-PH
POWER (5)
POWER (5)
NOTICE
(model)
J JAPAN
U U.S.A
C CANADA
R GENERAL
T CHINA
K KOREA
A AUSTRALIA
B BRITISH
G EUROPE
L SINGAPORE
E SOUTH EUROPE
V TAIWAN
F RUSSIAN
P LATIN AMERICA
S BRAZIL
H THAI
● 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あります。
135