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A
B
1
I PRINTED CIRCUIT BOARD (Foil side)
INPUT (1) P.C.B. (Side A)
2
3
4
INPUT(2)
(CB4)
AGND
+12V
AGND
D+12
GND
GND
+5A
S3.3
5
RESET
S3.3BK
PW_DOWN
POW_RY
-24V
6
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 C523 is dangerous even after the power is turned off because an electric charge remains and a high voltage continues
7
to exist there.
Before starting any repair work, perform discharge by connecting a discharge resistor (5 k-ohms/10 W) between C523 terminals.
C
D
INPUT(3)
(CB901)
DSP
AMP
(CB10)
(CB708)
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。
・ C523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 kΩ/10 W) をC523の端子間に接続して放電してください。
E
F
G
5 k-ohms
10 W
H
I
Ref No. Location
AC IN
D501
D3
D503
F3
D510
G6
D515
F5
D516
E4
D517
E4
D518
E5
D522
D5
D523
C5
D524
D4
D528
D4
D537
E5
IC501
D3
IC502
F3
IC503
D3
IC504
E5
IC506
C3
IC507
E6
IC509
C6
IC510
C4
IC511
E5
Q501
F3
Q502
C3
Q503
C3
Q505
F5
Q506
C3
Q507
B6
Circuit No.
U, C, T, K, A, B, G, L, V
J504, 506
X
C511, 512
O
C530
O
X : NOT USED
O : USED / APPLICABLE
J
YSP-800
J
O
X
X
49

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