Yamaha RX-V373 Service Manual page 78

A B
RX-V373/HTR-3065
1
MAIN (1)
(Side A)
2
OPERATION (4)
(CB192)
+5D
AV1_D
AV2_D
DGND
AV3_D
AV4_D
DGND
AGND
ADL
AGND
3
AGND
ADR
AGND
MIC
AGND
AUXR
AGND
AUXL
AUXE
DA_FL
AGND
DA_FR
AGND
DA_C
AGND
DA_SW
AGND
DA_SL
4
AGND
DA_SR
AGND
F_MT
C_MT
S_MT
+12A
-12A
OPERATION (4)
(CB191)
5
6
1
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.
C46, C47 on MAIN (1) P.C.B.
安全対策
・ この製品の内部には高電圧部分があり危険です。修理の際は、絶縁性の手袋を使用するなどの安全対策を行ってください。
7
・ 下記のコンデンサには電源を OFF にした後も電荷が残り、高電圧が維持されており危険です。修理作業前に放電用抵抗
（5 k Ω /10 W）を下記の各コンデンサの端子間に接続して放電してください。放電所用時間は各々約 30 秒間です。
MAIN（1）P.C.B. の C46、C47
78
C D E
AV 1 AV 2 AV 3 AV 4 AV 5 AV OUT
OPTICAL COAXIAL COAXIAL OPTICAL
(CD) (TV)
L/R L/R
PJ24
PJ21
IC2
15
F G
AUDIO1 AUDIO2 AUDIO SUBWOOFER
OUT
OUT
L/R L/R L/R
PJ22
PJ26
CB2
W1
IC1
1
TUL
TUR
TUE
NC
SW_MT
R2A_MOSI
R2A_SCK
DGND
DGND
DC_PRT
DIGITAL
I_PRT
AMP_OLV
(CB222) AMP_LMT
TRANS_RY
HP_N_DET
HPRY
SPRY_S
OPERATION (2)
SPRY_C
SPRY_F
PS_PRT (CB134)
THM3
H I
SPEAKERS
R FRONT L
+/- +/-
SURROUND CENTER
R L
+/- +/- +/-
19
OPERATION (5)
(CB166)
J
ACH
ACH
E
E
ACL
ACL
POWER TRANSFORMER
• Semiconductor Location
Ref no. Location
D1 H5
D2 H6
D9 G3
D10 D5
D11 E5
D12 H3
D13 G4
D14 H3
D15 G4
D16 F5
D17 F4
D19 H5
D20 I2
D22 I3
IC1 G6
IC2 C6
Q1 I6
Q2 H6
Q3 H5
Q4 I6
Q5 I5
Q6 H5
Q7 G5
Q8 E5
Q9 C5
Q10 F5
Q11 G5
Q12 E5
Q21 I2
Q22 E5