Schematic Diagrams - Yamaha NS-BP300 Service Manual

A B C
R-840/NS-BP300
DAB
1
2
A, B models
3
4
CB902
5
Page 63 B4
to FUNCTION (1)_CB303
6
7
8
9
10
70
D E F
3.3
3.5
3.3
0
0
0
1.8
0
1.8
0
0
3.3
0
0
0
G H I
IC901: PQ012GN01ZPH
Low power loss regulator
DC input DC output
1 3
(Vin) (Vo)
IC
Bias power supply
2
(VB)
5
GND
IC901
J K L
CB901
1.3
3.5
0
0
3.5
0
3.5
3.5
0
0
0
0
3.3
3.3
To DAB MODULE
3.3
3.5
3.5
0
3.3
0
3.5
0
0
1.7
1.8
1.8
0
0
0
0
★ All voltages are measured with a 10MΩ/V DC electronic voltmeter.
★ Components having special characteristics are marked
with parts having specifications equal to those originally installed.
★ Schematic diagram is subject to change without notice.
M N
and must be replaced