Yamaha CD-S3000 Service Manual page 54

A B
CD-S3000
1
2
3
to POWER TRANSFORMER
(for DIGITAL/FRONT P.C.B.)
4
5
to POWER TRANSFORMER
(for DIGITAL/FRONT P.C.B.)
6
7
54
C D E
FRONT (1)
(Side A)
5 k-ohms 5 k-ohms
10 W 10 W
BR
GR
RE
BL
W902
FRONT (3)
(CB908)
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.
C914–C917 on FRONT (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。
・ 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。
FRONT（1）P.C.B. の C914 C917
F G
DIGITAL
(CB410)
OUT
GND
Vcc
OUT
GND
Vcc
OUT
GND
Vcc
OUT
GND
Vcc
H I
CB902
IC905 IC909
5 k-ohms 5 k-ohms
10 W 10 W
J
• Semiconductor Location
Ref no. Location
D910 E5
D911 G5
D912 D4
D913 D3
IC901 G4
IC902 E4
IC903 G5
IC904 E3
IC905 H4
IC906 H4
Q901 E5
Q902 F5