Yamaha YSP-4300 Service Manual page 111

A B
1
P.C.B. MAIN (2)
MAIN (2)
2
T2
Power
Transformer
P-CON
3
T301
Sub-
Transformer
4
IC303
Regulator
KIA7805PI
+5V
5
6
7
C D
Power Supply Section Block Diagram
→
SCHEMATIC DIAGRAM
W5
P.C.B. MAIN (3)
IC201
Ope-Amp
Filter
NJM4580E
+5V +5V
CB304
W204
P.C.B. AWCD2A
E F
NS-WSW160
P.C.B. MAIN (1)
→
MAIN (3)
SCHEMATIC DIAGRAM
IC202
Ope-Amp
Filter
±15 ±15
NJM4580E W203 CB23
D201
Status LED
P.C.B. DSP (1)
5V
W206 CB503
P.C.B. DSP (2)
DSP (2)
→
SCHEMATIC DIAGRAM
+5V +5V +5V
CB101 CB601 CB602
G H
YSP-CU4300/YSP-CU3300/NS-WSW160
Q1,2
Regulator
W5 ±15
Q3-6,8,10-12,18
Power Amplifier
Q1
FET Switch DAC
5V RZR020P01TL PCM1781DBQR
IC504
Regulator Regulator
RP132H331D-T1-F RP130Q181D
+3.3V
DSP
YSS952-QZE2
IC508
Regulator Microprocessor
+5V RP132H331D-T1-F R5F21266SNFP
CB501 M3.3V
DSP (1)
I J
MAIN (1)
→
SCHEMATIC DIAGRAM
IC505
IC506
+1.8V
IC503
IC501
→
SCHEMATIC DIAGRAM
111