Internal View; Service Precautions / サービス時の注意事項 - Yamaha CD-S3000 Service Manual

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CD-S3000

■ INTERNAL VIEW

Top view
1
9
Front view
10
13
■ 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.
C914 to C917 on FRONT (1) P.C.B.
C955 on FRONT (2) P.C.B.
C305 to C308 on AUDIO P.C.B.
For details, refer to "PRINTED CIRCUIT BOARDS".
Precaution for handling measuring instrument
Since the audio signal output of this unit is BALANCED
OUT connected, the ground side of the measuring
instrument to be connected to the audio signal output
connector MUST be kept in floating condition.
12
2
3
4
8
7
6
5
11
12
FRONT (1) P.C.B.
1
DIGITAL P.C.B.
2
3
FRONT (2) P.C.B.
AUDIO P.C.B.
4
5
POWER TRANSFORMER for AUDIO
FRONT (7) P.C.B.
6
7
MODULE BOARD
LOADER MECHANISM UNIT
8
9
POWER TRANSFORMER for DIGITAL/FRONT
FRONT (5) P.C.B.
10
11
FRONT (3) P.C.B.
FRONT (4) P.C.B.
12
FRONT (6) P.C.B.
13
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
FRONT(2)P.C.B. の C955
AUDIO P.C.B. の C305 ∼ C308
詳しくは PRINTED CIRCUIT BOARDS を参照してくだ
さい。
計測機器取り扱い上の注意
本機の音声出力は BALANCED OUT 接続となっていま
すので、音声出力端子に接続する計測器のアース側は
フローティング状態に保つ必要があります。

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