Yamaha RX-E400 - Page 15

ABCDEFGH
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 STA DAT I CLK DAT O CE 12 Ð12 ETU
B G 12
MAIN (6)
DG
F2 F1
S12
PRY
MAIN (7)
+B
E
+12
DG PRY S12 F2 F1
OPERATION
OPERATION
SYS I/O TH DES VOL UP CE DAT I MUT A STA
RLY SP
ÐVP
PRO PS
VOL DN
PRO I
CLK
DAT 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