A
B
C
D
E
F
G
H
1
2
3
4
5
6
RX-E400
16
■
PRINTED CIRCUIT BOARD (Foil side)
MD
CD
AUX
TAPE
IN
OUT
IN
IN
IN
OUT
MAIN ( 2 ) P. C. B.
ETU
—12V
12V
CE
DAT O
CLK
DAT I
MUT T
STA
ST/MO
MAIN (1)
—
12V
12V
E
R
E
L
E
MAIN (3)
16
15
14
12
1
13
24
85
1
30
CE
CLK
TE
5V
RDS
TE
MUTT
ST/MO
DAT I
DAT O
NC
12V
TUL
TUR
STA
TUNER
W252
#4
4
MAIN ( 3 ) P. C. B.
-12
12
E
R
E
L
E
MAIN (2)
HP-L
HP-R
E
E
TOL
E
TOR
E
E
VOL-DN
VOL-UP
SGND
MAIN (1)
TINR
TFBR
TOR
E
E
TOL
TFBL
TINL
E
HPR
HPL
OPERA
TION
VOLUME
1
5
8
4
1
10
MAIN (1)
MAIN ( 4 ) P. C. B.
#5
W253
+B
G
+12
RE
BL
RE
W257
W256
W255
W251
MAIN (1)
POWER
TRANSFORMER
MAIN ( 7 ) P. C. B.
MAIN (6)
F1
F2
#6
CIRCUIT CHANGES BY MARKET.
U, C
R
A
B, G
C162, 163
X
X
X
O
XL100
X
X
X
O
C149, 153, 157
X
X
X
O
C154
X
X
X
O
R160
X
X
X
O
C138, 152
X
X
X
O
R139
X
X
X
O
C132
X
X
X
O
L102, 103
X
X
X
O
R138
X
X
X
O
Q108
X
X
X
O
R134
X
X
X
O
IC109
X
X
X
O
O : USED
X : NOT USED
Point
r
(Pin12 of IC109)
V : 2V/div
H : 0.1
µ
sec/div
DC range
1 : 1 probe
0V
Ref. No.
Location
D210
D2
D541
G2
●
Semiconductor Location
Ref. No.
Location
IC100
B3
IC108
B3
IC109
B3
IC113
B3
IC210
D2
IC211
E3
Ref. No.
Location
Q108
B3
Q541
F2