Yamaha YSP-4300 - Page 118

IC2
IC3
IC7
IC4
IC6
CB2CB3
CB1
W1
W2
W5
CB6
IC12 IC11
W3
CB4
CB7
POWER (1) (Side A)
AC IN
5 k-ohms
10 W
5 k-ohms
10 W
YSP-CU4300
+26D
DGND
DAMP (CB913)
(YSP-CU4300)
DAMP
(CB910)
+26D
DGND
DGND
+12D
+26D
DIGITAL (W303)
DIGITAL
(CB106)
INPUT (1)
(CB6)
INPUT (3)
(CB72)
INPUT (4)
(W63)
DGND
+26D
DGND
DGND
+12D
S3.3
+3.3D
+3.3D
DGND
DGND
DGND
+12D
+3.3D
AC_PWR_DWN
26V_PRI
P_CON
S3.3
SGND
S6.3
SGND
S3.3
SGND
AW_PON
AW_RPT
S3.3 SGND SGND
+5AW SGND S3.3AW +3.3D SGND
5151
U, C, V, S, J models
U, C, V, S, J models
U, C, V, S, J models
T, K, A, B, G, F, L, H models
T, K, A, B, G, F, L, H models
ABCDEFGH I J
1
2
3
4
5
6
7
118
YSP-CU4300/YSP-CU3300/NS-WSW160
• Semiconductor Location
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（1）P.C.B. の C8、C44、C48
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 to discharge electricity. The time required for discharging is about 30 seconds per each.
C8, C44 and C48 on POWER (1) P.C.B.
Ref no. Location
D1 C4
D3 E4
D4 E4
D7 F4
D8 F5
D9 F4
D14 E3
D20 G4
Ref no. Location
IC2 E4
IC3 D3
IC4 F3
IC6 F3
IC7 D3
IC11 H5
IC12 H5
Q2 E4
YSP-CU4300 YSP-CU3300
DRAFT