Yamaha RX-E400 - Block Diagram

ABCDEFGH
1
2
3
4
5
6
RX-E400
13
FLUORESCENT DISPLAY
V700
PJ250
MOTOR
DRIVE
IC211
Q701
Q703
Q702
IC100
INPUT SELECTOR
1 2 58 59
21 24
~
16 63 100 7 22 12 99
SEG-1~35DIG-1~16
OPERATION
KEY
SW701~707
95
96
98
97
KEY2 X IN
X OUT
10XOUT
10XIN
RLY. PW Q231
XL701
XL700
KEY1
KEY0
AVSS
12
94
DES
1
30 13
14
15
12 18 19
5
4
7
2
8
1
5
8
5 6
2 10
11
20
23
26
2
29
6
25
3
28
7
24
4
27
6
DES
10
CE
8
VOL-UP
7
VOL-DN
4
TH
14
MUT-A
9
PRO-I
1
RLY-SP
5
PRO-PS
17
SYS-I/O
11
CLK
13
DAT-0
F2
F1
12
15
16
17
DAT-I
MUT-T
STA
ST/MO
MAIN. P. C. B.
CB251
TERMINAL No.
25 28 29 30
DAT–I MUT–T STA ST/MO
6
3
2
16
OPE. P. C. B.
CB707
TERMINAL No.
OPE. P. C. B.
OPE. P. C. B.
23
8
7
5
24 26
CE CLK DAT–O
1110
4 3
VOL–UP VOL–DN
35
HP
5
3
7
1
9 22
8 4
17
19
RLY–SP
9
20
PRO–I
17
SYS-O
D702
1
18
SYS-I
4
27
MUT–A
D701
R709
Q700
+5V
13
92
PRO–PS
+5V
–VP
F2
F1
89 6436 62
~
66 88
~
INPUT
SELECTER
SW700
5 6
+5V
REMOTE
SENSOR
U700
21
+5V +5V
+5V
VCC VCC
AVCC
+5V-BK
RESET
PD
TIMER
–VP
ENC–B ENC–A
Rem
12S
MUTE
DRIVE
Q271, 273,
277
MUTING
Q250, Q251
POWER
AMP
Q252~255
Q259~262
Q263~266
Q267, 269
PROTECTION
Q272, 275, 276,
279, 280
C. R
R547
AC1+12V
AC3–12V
R345
R548
R358,
359
R346
MUTING
Q281~284
RELAY
DRIVE
Q274
SW250
R only
+12V
AUX
CD
MD REC
TAPE REC
MD PLAY
TAPE PLAY
±12V
±12V
±B
+12V
±12V
IC108
+B
PJ100
M
TONE CONTROL
IC210
BASS TREBLE
VR700
VOLUME
VR210
BALANCE
VR702
VR701
RY250
REST
D704
OPE P. C. B.
MAIN P. C. B.
SPEAKERS
SUB
WOOFER
DG
HP
L
R
HEAD
PHONES
JK700
REM
(SYSTEM CONNECTOR)
JK250
TE250
14
91
TH
Q256 ~ 258
IC700 µ–COM
TUNER
AM/FM
TIMER
10
11
13
15
2
R745
R551
-VP
D233
RY231
Q231
RY231
Q231
Q540
D270
D540
Q541
D541
Q278
D258
Q232
SUB
TRANSFORMER
12S
12S
G
T231
F232
F1
F2
AC1
+B
–B
–B
+B
–B
–VP
–30V
+12V
–12V
F231
TE231
POWER
TRANSFORMER
240V
220V
120V
120V
110V
0V
SW401
F401
C303
C304
D542
U, C, A, B, G
models
U, C, A, B, G
models
MAIN P. C. B.
R model
R model
G only
AC3
IC113
+12V
+5V
TUNER
2
12
13
4.332MHz
XL4
RDS (B,G only)
FM
ANT
GND
AM
ANT
RDS
IC109
LC72722
Q108
MAIN. P. C. B.
CB103
TERMINAL No.
7
RDS
14
3
2
1
DAT-I
MUT-T
STA
ST/MO
15
CE
13
CLK
6
TUL
4
TUR
9
5V
8
12V
TUNER
20
21
22
23
DAT O
CLK
DAT I
CE
TO: µ-COM
FROM: µ-COM
TO: INPUT
AM/FM TUNER
(TUNER PACK)
■ BLOCK DIAGRAM
• MAIN: See page19 → SCHEMATIC DIAGRM
• OPERATION: See page 20 → SCHEMATIC DIAGRM