Yamaha NP-S2000 Service Manual page 56

A B
NP-S2000
1
POWER (2) P.C.B.
(Side A)
2
3
4
5
POWER TRANSFORMER
for Control section
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
7
of each capacitor indicated below to discharge electricity. The time required for discharging is about 30 seconds per each.
C359-C361, C373 on POWER (2) P.C.B.
56
C D
5 k-ohms
10 W
IC354
IC353
1 4 1 4
IN COM OUT
IC352
IN COM OUT
IC351
5 k-ohms 5 k-ohms
10 W 10 W
E F
POWER (3) P.C.B.
ACFL2
ACFL1
FLGND
+VP
DAC (3)
(W702)
POWER TRANSFORMER
for Audio section
PRV_D
DGND
+3.3D
DGND
+7D
-12D
DGND
+12D
DAC (1)
(CB401)
CB604
POWER TRANSFORMER
for Control section
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。
POWER（2）P.C.B. の C359 ∼ C361、C373
G H I
(Side A)
AC IN
CB602 CB601
7 1
IC601
8 14
CB605
DAC (2)
(CB202)
J
to chassis
(B, G, J models)
• Semiconductor Location
Ref no. Location Ref no. Location
D352 C5 IC353 D4
D353 B3 IC354 D4
D354 C3 IC601 H4
D356 C4 IC602 H5
D604 I3 IC603 I5
D610 I5 Q351 D3
IC351 D5 Q601 H6
IC352 D5 Q603 I4