Yamaha RX-V550 Service Manual page 72

A B
RX-V550/HTR-5750
RX-V450/HTR-5740/DSP-AX450
I PRINTED CIRCUIT BOARD (Foil side)
1
POWER (1) P. C. B. (Lead Type Device)
FUNCTION (1)
2
SR
E
FR
E
C
E
SL
E
FL
E
SBR
E
SBL
3
4
POWER (2) P. C. B.
5
R, L models only
6
7
72
C D
MAIN (1)
(Lead Type Device)
VI
YE
RE
OR
BE WH
SUBTRANS
POWER TRANSFORMER
E F G
FUNCTION (1)
+5D1
+5D2
+5
-5
MAIN (1)
+12
-12
HPG
POWER TRANSFORMER
RX-V550/HTR-5750
Circuit No.
CB291-294
F3
SW291
W291
RX-V450/HTR-5740/DSP-AX450
Circuit No.
CB291-294
F3
SW291
W291
X: NOT USED
O: USED / APPLICABLE
H I
POWER
TRANSFORMER
U, C, T, K, A, B, G, E L, R
X O
X O
X O
X O
• Semiconductor Location
J, U, C, T, K, A, B, G, E L, R Ref. no. Location Ref. no. Location Ref. no. Location
D301 E4 IC304 I5 Q305
X O
X O D302 C4 IC305 H5 Q306
X O D312 J3 IC306 I5 Q307
X O D313 I3 Q301 E4 Q308
IC301 E5 Q302 C4 Q309
IC302 J5 Q303 F4 Q310
IC303 I5 Q304 C4 Q311
J K
MAIN (1)
MAIN (1)
E
DG
DG
Ref. no. Location
D4 Q312 C3
E4 Q313 F2
C4 Q314 C2
F4 Q315 D3
C4 Q323 D4
D4 Q325 D4
E3 Q327 D2