Yamaha CRX-E400 Service Manual page 15

A B
PRINTED CIRCUIT BOARD (Foil side)
1
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
2
SYSTEM
CONNECTOR
SUBWOOFER
L
3
SPEAKERS
R
FREQUENCY
STEP
(R only)
4
5
6
C D
MAIN ( 1 ) P. C. B.
MAIN (7)
MAIN (4)
MAIN (2)
E F
Semiconductor Location
Ref. No. Location
Ref. No. Location
Q250 E4
D251 F3
Q251 F4
D252 B4
Q252 F3
D253 E3
D254 G3 Q253 F4
D255 C3 Q254 F3
D256 C3 Q255 F3
D257 C4 Q256 F3
D258 C3 Q257 F2
D270 C4 Q258 F3
D540 C4 Q259 F3
D542 C4 Q260 F3
Q261 E2
Q262 F2
Q263 E3
Q264 E3
Q265 F3
Q266 G3
Q267A F2
Q267C G2
MAIN (6)
#7
MAIN (3) W250
OPERATION
G H
RX-E400
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
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