Yamaha RX-V681 Service Manual page 106

A B
RX-V681/RX-A760
1
MAIN (1)
(Side A)
PHONO AUDIO1 AUDIO2
L/R
2
RX-V681:
OPERATION (4)
(CB382)
RX-A760:
OPERATION (4) ( )
CB382
-12V
+12V
E
AUXE
AUXL
AUXR
MICE
3 MIC
TUE
TUL
TUR
DASBL
AGND
DASBR
AGND
DASL
AGND
DIGITAL (1)
DASR
AGND
(CB946)
DAC
4
AGND
DASW
AGND
DAFL
AGND
DAFR
NPL
NPE
NPR
AGND
ADL
AGND
ADR
DIGITAL (1)
(CB948)
5
6
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.
7
The time required for discharging is about 30 seconds per each.
C1084, C1085 on MAIN (1) P.C.B.
106
C D
ADTL RX-V681:
DIGITAL (1)
AGND
OPERATION (4)
(CB949)
ADTR
RX-A760:
OPERATION (4) (
RX-V681:
OPERATION (7)
ZONE OUT
AV5 AV6
RX-A760:
ZONE 2
OPERATION (7) (
L/R L/R L/R L/R L/R
HPR
E
HPL
HP_N_DET
W102B
BL
W103A
E F
RX-V681 RX-A760
(CB384)
SURROUND CENTER
)
CB384
R L
+/- +/- +/-
(CB308)
PRE OUT
SUBWOOFER
)
CB302
1/2
W110
W103B
IN
COM
OUT
COM
IN
OUT
BL
W101C
BE
W108
W109
W104A
W101B
RE
W101D
BE
G H
SPEAKERS
EXTRA SP2
FRONT SURROUND BACK
ZONE2/BI-AMP
R L R L
+/- +/- +/- +/-
W104B
W105
GND
5.5V
CB101
W101A
RE
5 k-ohms
10 W
5 k-ohms
10 W
• Semiconductor Location
Ref no. Location Ref no. Location
D1040 H4 Q1027
D1051 F3 Q1028
IC103 F3 Q1029
IC104 F3 Q1030
Q1015 E5 Q1031
Q1016 D5 Q1032
Q1017 D5 Q1033
Q1018 C5 Q1034
Q1019 C5 Q1035
Q1020 B5
Q1036
Q1021 B5 Q1037
Q1022 G6 Q1038
Q1023 F6 Q1039
Q1024 E6 Q1040
Q1025 E6 Q1041
Q1026 D6
I J
RX-V681:
OPERATION (8)
(CB391)
RX-A760:
OPERATION (8) ( )
CB391
RX-V681:
OPERATION (3)
(W3707)
RX-A760:
OPERATION (3) ( )
W3707
AC12
POWER
E
AC12 TRANSFORMER
POWER
TRANSFORMER
DIGITAL (1)
(CB80)
DIGITAL (1)
(CB78)
Ref no. Location Ref no. Location
C6 Q1042 B6 Q1053C E6
B6 Q1043 G6 Q1054A C6
G5 Q1044 F6 Q1054C D6
G5 Q1045 E6 Q1055A C6
F5 Q1046 D6 Q1055C C6
E5 Q1047 C6 Q1056A B6
D5 Q1048 C6 Q1056C B6
C5 Q1049 C6 Q1067 G5
B5 Q1050A G6 Q1068 G5
G6 Q1050C G6 Q1069 G5
G6 Q1051A F6 Q1070 G5
F6 Q1051C F6 Q1071 G5
E6 Q1052A E6 Q1072 B5
D6 Q1052C F6 Q1532 C4
C6 Q1053A D6 Q1533 C4