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