Block Diagram - Yamaha R-S300 Service Manual

A B

■ BLOCK DIAGRAM

1
→
FUNCTION
SCHEMATIC DIAGRAM
2
EQ AMP
PHONO
IC601
NJM2068MD-TE2
FM/AM ANT FM/AM TUNER
3
CD
DOCK
DOCK
→
SCHEMATIC DIAGRAM
+5V
PB
TAPE
REC
(REC)
PB
4 LINE1
REC
(REC)
LINE2 IN
5
MUTE
SUBWOOFER
OUT
→
MAIN
SCHEMATIC DIAGRAM
IN
6
REMOTE
IR LED
OUT
(U, C, A models)
→
7
FUNCTION
SCHEMATIC DIAGRAM
C D
OPERATION
PURE DIRECT
56
IC401
57
INPUT SELECTOR
SW801
VOLUME
+12V
VR951 VR903
(RDS)
58
59
IC309
62
63
NJM4580E
78
79
76
77
74
75
72
73
68
69
MICROPROCESSOR
IC102
SERIAL DATA
NJM4580E
XL501
L+R
LPF
20MHz
13
90Hz/12dB oct
15
IR FL DISPLAY
OPERATION KEY
SP A/B
E F
→
SCHEMATIC DIAGRAM
POWER AMPLIFIER
MUTE
NJM2068MD-TE2
IC901
0 dB
TONE CONTROL
VR902 VR901
I / DC / THERMAL PROTECTION
POWER RELAY
IC1
5.6V
MICROPROCESSOR
IR RECEIVER
IC502
STBY IND
93
A/D
R5F364A6NFA
POWER AMPLIFIER
82
OPERATION
DISPLAY
IR REMOTE
SW102
POWER
FL
-Vp
MANAGEMENT
DIRECT PRE AMP
SW
SELECTOR
TUNER
+12V
LOGIC
+5V
INPUT VOLUME
SELECTOR
PRE AMP
G H
SPEAKERS
SP A Lch
29.0dB
A
SP B Lch
L CH
SP A Rch
B
SP B Rch
HEADPHONE
A
SPEAKER
RELAY
R CH
A
B
B
RY137
HEADPHONE
JK701
RELAY
SUB-TRANSFORMER
T1
D24
RY1
Q2
POWER RELAY
POWER
IMPEDANCE SELECTOR
TRANSFORMER
SW101
F1
RY1
D111
+B
C134
-B C135
220-240
110-120
+15V
SW1
+7V Q6
D14
VOLTAGE SELECTOR
Q406
FL FILAMENT
(RECEIVER)
Q407
+7V Q7
-15V
D26
I J
R-S300
MAIN
→
SCHEMATIC DIAGRAM
PHONES
AC IN
(R model)
+5V
DOCK
PORT
37