Yamaha RX-V675 Service Manual page 118

A B
RX-V675/HTR-6066/RX-A730/TSR-6750
1
OPERATION (3)
2
3
4
5
CB374
POWER TRANSFORMER
6
7
118
C D
(Side A)
5 k-ohms
10 W
IC372
K
IC373
IC375
1 7
CB371 IC374
W3704
AC IN
DIGITAL (1)
(CB944)
E F
RX-A730
OPERATION (4)
• Semiconductor Location
Ref no. Location
D3701 C4
D3704 E4
D3716 D4
IC372 D3
IC373 E3
IC374 D6
IC375 C4
Q3801 J4
Q3802 J4
Q3803 J4
Q3804 J4
MAIN (1)
(CB153)
A
TUL
R
TUR
TUE
MIC
E
AUXL
AUXR
E
E
+12V
-12V
W3703
W3707
DIGITAL (1)
(CB942)
Safety measures
• Some internal parts in this product contain high voltages and are dangerous. Be sure to take safety measures during servicing, such
as wearing insulating gloves.
• Note that the capacitors indicated below are dangerous even after the power is turned off because an electric charge remains and a
high voltage continues to exist there. Before starting any repair work, connect a discharging resistor (5 k-ohms/10 W) to the terminals
of each capacitor indicated below to discharge electricity. The time required for discharging is about 30 seconds per each.
MAIN (1)
C3706 on OPERATION (3) P.C.B.
(CB102)
G H I
(Side A)
OPERATION (2)
(CB345)
AUXR
E
AUXL
+12V
MIC
-12V
NC
NC
PS2_PRT
MAIN (1)
DCDC_PON
+5AE
+5A
TUR
TUE
TUL
OPTICAL COAXIAL OPTICAL
AV 1 AV2 AV3 AV4
J
DIGITAL (1)
(CB945)
+3.3A
+5A
+5AE
DC_TRG
AV1_D
+5DSP
AV2_D
DGND
AV3_D
DGND
AV4_D
(W110)
DGND
RMS_OUT
RM+
E
RM-
+18V
JK383 JK381
JK382
OUT IN
REMOTE TRIGGER
OUT