Yamaha HTR-4064 Service Manual page 88

A B
RX-V471/HTR-4064
1
VIDEO (3)
(Side A)
5 k-ohms
10 W
2
3
4 5
1 8
4
5
6
Notes)
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
7 to discharge electricity.
The time required for discharging is about 30 seconds per each.
C3706 on VIDEO (3) P.C.B.
88
C D
DIGITAL
(CB43)
GND
GND
5.5V
5.5V
A
R
K
W3702A
W3701A
CB372 CB373
R, S models
OPERATION (11)
• Semiconductor Location
(W4505A)(W4505B)
(R, S models)
Ref no. Location
D3701 C5
D3704 D3
IC371 B4
IC372 C3
IC373 C3
IC374 E3
注意）
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。
VIDEO（3）P.C.B. の C3706
E F G
DEST
PRY
MCPU_N_RST
ACPWR_DET
DGND
+3.3M
DIGITAL
(CB55)
AC IN
WH
BE
H I
VIDEO (4)
(Side A)
U, C, T, K, A, B, G, F, L, J models
POWER TRANSFORMER
W3701B W3702B
BE WH
VIDEO (5)
(Side A)
POWER TRANSFORMER
CB347
CB348
VIDEO (1)
OPERATION (1)
(CB346)
(CB403)
J