Yamaha RX-V740 Service Manual page 72

A B
RX-V740/RX-V740RDS/DSP-AX740
RX-V640/RX-V640RDS/HTR-5660/DSP-AX640/DSP-AX640SE
1
I PRINTED CIRCUIT BOARD (Foil side)
OPERATION (1) P. C. B.
FUNCTION (4)
2
HPMT
VRB
VRA
/HP
ISB
ISA
REM1
PSW
/BLK
CKFD
DTFD
CEFD
ADKEY1
ADKEY0
RM–
+5M
RM+
VP
MG
3
OPERATION (3) P. C. B.
(Lead Type Device)
4
MG
VRB
VRA
5
VOLUME
6
• Semiconductor Location
Ref. No. Location
D551 F5
Circuit No.
D501
D552 F5
R509
IC551 H4
7 R524~527
SW516~519
Q551 G4
X: NOT USED
Q552 H4
O: USED / APPLICABLE
72
C D
(Lead Type Device)
1 2 5 20
NC
TOR
E
TOL
–12
+12
OPERATION (6)
J, R, T, K, L U, C,A B, G
X O X
X O X
X X O
X X O
E F G
DSP-AX640SE
28
PRESET/TUNING
A/B/C/D/E
OPERATION (2) P. C. B.
H I
65 68 69
8 1
STEREO
PROGRAM
OPERATION (5)
(Lead Type Device)
STANDBY/ON
Power Transformer
J
INPUT
6CH INPUT
INPUT
MODE
SPEAKERS
B A