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A
B
RX-E400
PRINTED CIRCUIT BOARD (Foil side)
1
MAIN ( 2 ) P. C. B.
MD
TAPE
IN
OUT
IN
OUT
2
CE
DAT I
CLK
DAT O
16
TE
NC
5V
12V
RDS
TUL
TE
TUR
MUTT
STA
ST/MO
15
3
4
W252
4
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
5
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
16
6
C
CD
AUX
IN
IN
30
1
ETU
—12V
12V
CE
DAT O
CLK
DAT I
MUT T
STA
ST/MO
#4
MAIN (3)
Semiconductor Location
Point r (Pin12 of IC109)
Ref. No.
H : 0.1 µsec/div
V : 2V/div
D210
D541
DC range
1 : 1 probe
0V
D
E
MAIN ( 3 ) P. C. B.
MAIN (2)
HP-L
HP-R
E
E
TOL
E
TOR
E
E
TINR
VOL-DN
TFBR
VOL-UP
TOR
SGND
E
E
TOL
TFBL
TINL
E
HPR
HPL
1
10
5
8
4
1
VOLUME
MAIN (1)
Location
Ref. No.
Location
Ref. No.
Location
D2
IC100
B3
Q108
B3
G2
IC108
B3
Q541
F2
IC109
B3
IC113
B3
IC210
D2
IC211
E3
F
G
MAIN ( 4 ) P. C. B.
#5
+B
G
W253
MAIN (1)
+12
MAIN ( 7 ) P. C. B.
W257
RE
POWER
TRANSFORMER
W256
BL
W255
RE
#6
W251
MAIN (6)
H
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