Yamaha YSP-4300 - Page 124

W206
W203
W201
CB205
W204
CB206
W5B1
W5B2
W5B3
CB23
W2A
W2B
W9A
CB308
CB307
W8A
CB304
W5A3
W9B
W8B
W5A2
W5A1
IC3
CB301
IC303
CB302
MAIN (1) (Side A) MAIN (2) (Side A)
MAIN (3) (Side A) MAIN (4) (Side A)
Sub-transformer
DSP (1)
(CB502)
DSP (1)
(CB503)
DGND
TX
+5V
RST
RX
MODE
3.3V
SEL0
GSEL2
SIG
DGND
STATUS_LED
P-CON
AGND
SEL1
DGND
GSEL1
PROT
1 – 3(Reset) A – C
(For factory)
-15
DGND
AGND
+15
MAIN
PROT
-15
DGND
AGND
+15
MAIN
PROT
DGND
+5V
P-CON
DGND
+5V
P-CON
WH
RE
DRIVER
SUBWOOFER
-
+
5 k-ohms
10 W
5 k-ohms
10 W
RE
RE
BL
WH
BE
Power
transformer
INCOMOUT
AC IN
LINK
indicator
Group ID switch
(Writing port)
ABCDEFGH I J
1
2
3
4
5
6
7
124
YSP-CU4300/YSP-CU3300/NS-WSW160
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.
C23 and C24 on MAIN (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。
MAIN（1）P.C.B. の C23、C24
Ref no. Location
D3 F3
D201 E5
D314 H4
IC303 G4
Q1 D4
Q2 D4
Q14 E3
Q15 D3
Q18A D2
Q18C E2
Q326 H3
• Semiconductor Location
NS-WSW160
DRAFT