Yamaha YAS-207 Service Manual page 34

A B
YAS-CU207/ATS-CU2070/NS-WSW42
1
2
3
4
Imax:26.2mA
Ityp:19mA
5
SMPS
DC:22V/3.27A
6
AC INPUT:
100V–240V,50/60Hz;
AC IN
• See page 45 →
7 SUB
CIRCUIT DIAGRAM
(AC)
34
C D
IC806
DC/DC 5V
EML3193B
EFF=76%
Imax:87.5mA
INPUT VOLTAGE:
Ityp:58.8mA
DC:4.5–36V
EFF=70%
OUTPUT CURRENT:
Imax:3.0A
• See page 45 →
AMP
SCHEMATIC DIAGRAM
E F
NS-WSW42
Power Supply Section Block Diagram
IC807
DC 3.3V REG
BL9198-33BAPRN
Imax:14.5mA
Ityp:8.7mA
INPUT VOLTAGE:
DC:2–6V
OUTPUT CURRENT:
Imax:300mA
PC:0.4W
IC808
DC 3.3V REG
BL9198-33BAPRN
Imax:63.3mA
Ityp:43.5mA
INPUT VOLTAGE:
DC:2–6V
OUTPUT CURRENT:
Imax:300mA
PC:0.4W
G H
IC805
POWER AMPLIFIER
Imax:5.3A TPA3116D2
Ityp:1.6A
INPUT VOLTAGE:
VCC:4.5V–26V
IC804
MCU
STM8S003F3
Imax:4.5mA
Ityp:3.7mA
INPUT VOLTAGE:
DC:2.95–5.5V
DC:3.3V
Imax:10mA
Ityp:5mA LED*Ppcs
BT Receiver
CSRA65700
INPUT VOLTAGE:
Imax:63.27mA Imax:16.27mA
Ityp:43.5mA Ityp:13mA DC:2.8–4.25V
IC809
DAC
PCM5100A
Imax:44mA
Ityp:30mA
INPUT VOLTAGE:
Imax:0.665mA DC:3.0–3.6V
Ityp:0.58mA
IC803
EEPROM
GT24C128
Imax:3.0mA
Ityp:0.5mA
INPUT VOLTAGE:
DC:1.8–5.5V
IC810
OP AMP
Imax:9mA DIO2032
Ityp:6mA
DC:2.5–5.5V
I J
2 ohms
+
Pmax:100W
-
Ptyp:30W (1/3 power)