Printed Circuit Board - Yamaha DSP-A5 Service Manual

A B
Q Q
3 7 6 3 1 5 1 5 0
PRINTED CIRCUIT BOARD (Foil side)
1
P. C. B. MAIN (4)
W521B
2
W523B
W524B
W525B
3
T E
L 1 3 9 4 2 2 9 6 5 1 3
4
Semiconductor Location
Ref. No.
Ref. No. Location Location
Q506 G3
D501 F2
5 Q507 G3
D502 G3
D503 Q508 F3
G3
D506 F2 Q509 G3
D527 F2 Q510 F3
w w w
D531 F2 Q511 G3
D751 E3 Q512 G2
D752 G2 Q513 G3
D759 E3 Q514 G2
D760 E3 Q515 F3
.
Q516
D762 E3 F4
Q517
D763 E3 G3
6
C
P. C. B. MAIN (3)
PRY
PRY
SI2
SI2
MG
MG
W521A
W521 RE
W525A
W524A
W525 OR
W524 WH
W523 BL
W522 BE
Ref. No. Location
Q518 G2
Q519 F3
Q520 F2
Q544 F2
Q554 F2
Q557 F2
x a o
y
i
D E
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8
TO: TO: TO:
MAIN (1) MAIN (1) MAIN (2)
W509
W504
W507
BL
W504
BL
W522A
#16
RE
W523A
BE
W507
W508
Q Q
3 7 6 3
J only
(R,T,B,G only)
IMPEDANCE SELECTOR
u 1 6 3
.
E-36/J-34
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F
2 4
9 9 8
P. C. B. MAIN (6)
W508
BL
R,T,B,G only
+25
–25
+10
+5D
+5
–5
+12
–12
VG
1 5 1 5 0 8 9 2 4
#110
#110
#110
TO: INPUT (1)
m
c o
G H
DSP-A5
2
9 9
E
+B
+BV
VC
NFC
VRR
NFRR
VRL
NERL
VR
NFR
VL
NFL
–BV
9 8 2 9 9
E-37/J-35