Yamaha RX-E400 - Page 16

ABCDEFGH
1
2
3
4
5
6
RX-E400
16
■ PRINTED CIRCUIT BOARD (Foil side)
MD CD AUXTAPE
IN OUT IN IN INOUT
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
OPERATION
VOLUME
1
58
41
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 µsec/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