Yamaha RX-V750, Service Manual

Page: 65 / 128

A B C D E F G H
1
2
3
4
5
6
RX-V750/DSP-AX750/DSP-AX750SE
RX-V650/HTR-5760
65
■
PRINTED CIRCUIT BOARD (Foil side)
DSP
CB1
FUNCTION (4)
CB901
OPERATION (1)
CB801
FUNCTION (1)
CB304
FUNCTION (5)
CB461
FUNCTION (1)
CB303
FUNCTION (3)
CB602
CONVERSION (1)
CB704
AM/FM TUNER
MAIN (2)
CB122
MAIN (1)
CB3
RX-V750 (U, C, A)
RX-V650 (U, C, A) only
13 24
12 1
1
30
50
51
80 81
100
31
2
3 CH1 3 CH2
RX-V650, HTR-5760 only
FUNCTION (2) P.C.B.
(Lead Type Device)
FUNCTION (2) P.C.B.
(Surface Mount Device)
Circuit No.
R549
R553
R552
R555
R501
R502, 586–588
CB501
C516–522, 524
Q507
D508
J501
R561, 589–597
IC503
XL502
C525–534
L501
Q508
Q503
C512
R566, 571, 577
W503
C523
J
O
O
X
X
X
O
O
O
O
O
O
X
X
X
X
X
X
X
X
X
X
O
U, C
X
O
O
X
X
O
O
O
O
O
O
X
X
X
X
X
X
O
O
O
O
O
R, L
X
X
O
O
X
O
O
O
O
O
O
X
X
X
X
X
X
X
X
X
X
O
T, K
O
X
X
O
X
O
O
O
O
O
O
X
X
X
X
X
X
X
X
X
X
O
A
O
X
X
O
X
O
O
O
O
O
O
X
X
X
X
X
X
O
O
O
O
O
B
O
X
X
O
O
X
X
X
X
X
O
X
X
X
X
X
X
X
X
X
X
X
G
O
X
X
O
X
O
O
O
O
O
X
O
O
O
O
O
O
X
X
X
X
O
X: NOT USED
O: USED/APPLICABLE
V750, V650 AX750SE V750
B, G, E
O
X
X
O
X
O
O
O
O
O
X
O
O
O
O
O
O
X
X
X
X
O
V650 AX750
U, C
X
O
O
X
X
O
O
O
O
O
O
X
X
X
X
X
X
X
X
X
X
O
T, K
O
X
X
O
X
O
O
O
O
O
O
X
X
X
X
X
X
X
X
X
X
O
A
O
X
X
O
X
O
O
O
O
O
O
X
X
X
X
X
X
X
X
X
X
O
HTR-5760
Point
w
(Pin 13 of IC502)
V : 2V/div, H : 40nsec/div
DC, 1 : 1 probe
0V
Point
e
CH 1 : Cathode of D501
CH 2 : Pin 12 of IC502
V : 5V/div (CH 1)
V : 5V/div (CH 2)
DC, 1 : 1 probe, H : 4.0sec/div
CH 2
CH 1
↑
AC POWER ON
(Connect the power cable)
↑
AC POWER OFF
(Disconnect the power cable)