Yamaha YSP 1000 - Digital Sound Projector Five CH..., Service Manual

Page: 52 / 92

YSP-1000
52
2
A B C D E F G H I J
1
3
4
5
7
6
■
PRINTED CIRCUIT BOARD (Foil side)
INPUT (1) P.C.B. (Side A)
1
14
7
8
INPUT (2)
(W505)
DSP
(W1)
AMP (2)
(W501)
GND
GND
+12A
+5VA
S3.3
+12B
AGND
AGND
AGND
+12A
+12V
+12V
+5VA(ADC DAC)
GND
GND
-24V
S3.3
S3.3BK
RESET
PW_DOWN
POW_RY
TEMP
AGND
MGND
+12V
MGND MGND
+5V +5V
AMP (1)
(W701)
MGND
+12V
MGND MGND
+5V +5V
AC IN
1
3
1
3
3
1
1 3
1
3
5 k-ohms
10 W
Q502 C3
Q503 D2
Q505 G4
Q506 C4
• Semiconductor Location
D501 C3
D503 F3
D510 G5
D515 F5
D516 F4
D517 F4
Ref. No. Location
D518 F5
D522 D4
D523 D5
D524 D4
D528 C4
D531 F6
D542 C5
IC501 D3
IC502 E3
IC503 D2
IC504 F6
IC506 B3
IC507 E5
IC509 B4
IC510 B4
IC511 C3
IC512 F6
Q501 F3
Ref. No. Location Ref. No. Location Ref. No. Location Ref. No. Location
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。
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
to exist there.
Before starting any repair work, perform discharge by connecting a discharge resistor (5 k-ohms/10 W) between C523 terminals.
X : NOT USED
O : USED / APPLICABLE
Circuit No.
C501 U, C, V, J T, K, A, B, G, L
X O