Yamaha Aventage RX-A770, Service Manual

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18
RX-V683/RX-A770
RX-V683/RX-A770
Top view
Front view
9
o q r
m j k l n
v u t s p
1 8 2 3 4 5 6 7
■
SERVICE PRECAUTIONS /
サービス時の注意事項
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.
C218 4 and 218 5 on MAIN (1) P.C.B.
For details, refer to
“
PRINTED CIRCUIT BOARDS
”
.
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。
• 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
C218 4
、
C218 5
詳しくは “
PRINTED CIRCUIT BOARDS
” を参照してく
ださい。
a
OPERATION (2) P.C.B.
b
OPERATION (13) P.C.B.
c MAIN (2) P.C.B. (R model)
d
Network Module
e
DIGITAL (1) P.C.B.
f
U, C models: TUNER Module
A, B, G, F models:
OPERATION ( 9 ) P.C.B. + DAB Module
g OPERATION (3) P.C.B.
h
OPERATION (1 5 ) P.C.B.
i
MAIN ( 5 ) P.C.B.
j
MAIN ( 4 ) P.C.B.
k MAIN (3) P.C.B.
l
MAIN (1) P.C.B
m
MAIN (6) P.C.B.
n
POWER TRANSFORMER
o OPERATION (18) P.C.B.
p
OPERATION (10) P.C.B.
q
OPERATION (1) P.C.B.
r
OPERATION (7) P.C.B.
s OPERATION (1 4 ) P.C.B.
t
OPERATION ( 5 ) P.C.B.
u
DIGITAL (2) P.C.B.
v
OPERATION (1 9 ) P.C.B.
RX-A770