Printed Circuit Boards - Yamaha NS-BP300 Service Manual

A B
R-840/NS-BP300

■ PRINTED CIRCUIT BOARDS

1
FUNCTION (1) P.C.B.
(Side A)
2
MAIN (4)
(W1)
MAIN (3)
(CB801)
3
LED_TIMER CB103
LED_STBY
LED_PWR
LED_EON
ISA
1
5
ISB
REM
HP_N_DET
+5CPU
4 3
+5M
MG
FL_SDT
FL_SCK
FL_N_CS
FL_N_IC
I_KEY0
LED_PD
PWR_SW
F2
F1
FLGND
+VP
4
IC102
I_CNTR
I_LRBAL
1 4
I_BAS
8 5
I_TRE
M_PS
1
20
MGND
15 11
MVOL+ 16
IC103
MVOL-
MG
I_VOL
+5CPU
FG
5
MAIN (5)
(W51)
No replacement part available.
C
6
7
50
C D
POINT A XL301 (Pin 14 of IC301)
POINT B XL101 (Pin 10 of IC101)
MAIN (2)
FUNCTION (2)
D
(W401)
(W702)
A, B models
2 1
CB108
CB106
IC108
5 8
IC106 IC104
4 1 4 5 4 5 4 5 4 5
3 1 3 1 3 1
31 50
3 1
IC105 IC107
30 51
5 6
10
1 80
100 81
CB102
B
MAIN (1)
(CB503)
(for factory)
E F
POINT C XL102 (Pin 13 of IC101)
DAB
(CB902)
FM TUNER
A, B models
A, B models A B, G models A, B models
16 1
CB303
9 8
4 5
1 8
5
4
CB305
MAIN (1)
(CB502)
MAIN (5)
(CB53)
G H
POINT D 1 / CB103 (+5BU), 2 / CB103 (N_RST)
CB103 1
(+5BU)
CB103 2
(N_RST)
POWER ON POWER OFF
FUNCTION (2)
(W701)
CB301
CB302
4 5
4 5
1 8
8
1
6
5
1 10
IC302
1 4
IC306
8 5
W301
8
IC308
1
• Semiconductor Location
Ref no. Location Ref no. Location
D105 C3 IC105
D106 C3 IC106
D111 B3 IC107
D112 D5 IC108
D301 H3 IC109
D302 H3 IC301
IC101 D5 IC302
IC102 B4 IC304
IC103 C4 IC305
IC104 D4 IC306
I J
CB103 1
(+5BU)
CB103 2
(N_RST)
POWER ON
SYSTEM
TO:PLAYER
CONNECTOR
Writing port
L/R PLAYER
AUDIO
IN
L/R AUX
SUBWOOFER OUTPUT
Ref no. Location Ref no. Location
D4 IC307 H4 Q113 D4
D4 IC308 G5 Q114 C4
D4 Q101 E5 Q115 C5
C4 Q102 D5 Q116 C5
B3 Q104 C4 Q301 F3
F3 Q106 D4 Q306 G5
G4 Q107 C4 Q309 G5
E4 Q109 C4 Q310 H5
G4 Q110 C4 Q312 F5
H4 Q112 D4 Q313 F5