A
B
C
D
E
F
G
H
1
2
3
4
5
6
RX-E400
15
■
PRINTED CIRCUIT BOARD (Foil side)
MAIN ( 1 ) P. C. B.
SYSTEM
CONNECTOR
SUBWOOFER
R
L
SPEAKERS
MAIN (3)
SGND
VOL-
UP
VOL-
DN
E
E
T-OUT
-R
E
T-OUT
-L
E
E
HP-
R
HP-
L
MAIN (4)
MAIN (2)
ST/MO
MUT
T
ST
A
DA
T
I
CLK
DA
T
O
CE
12
Ð12
ETU
B
G
12
MAIN (6)
DG F2 F1 S12 PR
Y
MAIN (7)
+B
E
+12
DG PR
Y
S12 F2 F1
OPERA
TION
OPERATION
SYS
I/O
TH
DES
VOL
UP
CE
DA
T
I
MUT
A
ST
A
RL
Y
S
P
ÐVP
PRO
PS
VOL
DN
PRO
I
CLK
DA
T
O
MUT
T
SYS
I/O
#7
W250
RE
W257
BL
W256
RE
W255
FREQUENCY
STEP
(R only)
CIRCUIT CHANGES BY MARKET.
U, C
R
A
B, G
C310, 311
X
X
O
O
C305, 306
X
X
O
O
SW250
X
O
X
X
O : USED
X : NOT USED
Ref. No.
Location
D251
F3
D252
B4
D253
E3
D254
G3
D255
C3
D256
C3
D257
C4
D258
C3
D270
C4
D540
C4
D542
C4
●
Semiconductor Location
Ref. No.
Location
Q250
E4
Q251
F4
Q252
F3
Q253
F4
Q254
F3
Q255
F3
Q256
F3
Q257
F2
Q258
F3
Q259
F3
Q260
F3
Q261
E2
Q262
F2
Q263
E3
Q264
E3
Q265
F3
Q266
G3
Q267A
F2
Q267C
G2
Ref. No.
Location
Q269A
E2
Q269C
E2
Q271
B4
Q272
G3
Q273
B4
Q274
C3
Q275
E3
Q276
F3
Q277
B4
Q278
C3
Q279
G3
Q280
G3
Q281
D4
Q282
D4
Q283
D4
Q284
D4
Q540
C4