Yamaha DP-U50 Service Manual page 28

A B
DP-U50
Q Q
3 7 6 3 1 5 1 5 0
I
PRINTED CIRCUIT BOARD (Foil side)
1
2
CENTER
LFE
AGND
RCH
LCH
+5A
+12V
+15V
AC DET
+5D SUB
3
T MUTE
SW MUTE
T E
L 1 3 9 4 2 2 9 6 5 1 3
CLK
VOLCE2
PRT I
SP ON
A MUTE
POW
E_B
KEY0
+5S
LED A1
LED TU
+5M
CCBDI
FLCE
REM
4
5
w w w
E-28/J-26
6
C
DSP P.C.B.
(Lead Type Device)
5 8
1
4
1
8
8 1
5 4
5 4
20
11
1
10
AGND
RLCH
RRCH
14 15
14 15
AGND
AGND
+9V
1 28 1 28
-15V
DGND
+5D SW
T-FAULT
PHONE
DATA
VOLCE1
PRT DC 132
E
PS
121 160
1
120
E_A
P SW
89
LED PC
88
LED A2
/ICD
GNDD
CCBCLK
GNDD
81 40
80 41
40
21
1
57
20 1
56
25 48
29
28
24 1
x a o
. i
D http://www.xiaoyu163.com E
1 15
ANALOG
30 16
PC IN
4
5
8
1
AUX 1 IN
AUX 2 IN
PRE OUT
2
DIGITAL
Q Q
USB
3 7
1
COAX IN
PC
8 14
44
45
OPT IN
1
7
AUX 1
OPT IN
OPT OUT
84 U, C, A, B, G only
85
1
7
112
8
14
1
1 4
4
8 5
u 1 6 3
y
3
E-29/J-27
http://www.xiaoyu163.com
F
2 4
8 9 9
G Semiconductor Location
Ref. No. Location Ref. No. Location
D413 C2 IC401 D5
D414 C2 IC406 C3
D415 C2 IC412 D3
D416 C2 IC413 C5
D417 C2 IC416 D5
D418 C2 IC417 C4
D419 C2 IC418 D4
D420 C2 IC430 D3
D437 C5 IC432 C4
D440 D2 IC436 D5
D441 D2 IC438 C5
D442 D2 IC439 C3
D443 D2 IC440 C3
D444 D2 IC454 C2
D445 D2 IC458 C2
D446 D2 IC471 D2
D447 D2 IC473 D1
IC474 D2
IC475 D3
IC477 C2
IC478 D2
Ref. No. Location
Q401 D3
Q402 C2
Q403 C2
Q404 C2
Q405 C2
Q410 C1
Q411 C2
Q417 C1
Q418 C2
Q420 D3
Q421 D3
Q423 D2
Q424 D2
Q427 D2
Q428 D2
6 3 1 5 1 5 0 8 9
m
NOTE)
c o
The DSP P.C.B. actually has a four-layer pattern structure (part face pattern, internal pattern
1, internal pattern 2 and solder face pattern) but it is shown as "part face pattern + solder
.
face pattern" in this diagram.
NOTE)
DSP P.C.B.は、4層パターン構造（部品面パターン、内層1パターン、内層2パターン、ハンダ面パ
ターン）ですが、本図のDSP P.C.B.は、部品面パターン＋ハンダ面パターンを表記しております。
G H
2
8 9 9
Point q (Pin 1 of IC417)
V : 2V/div, H : 50 nsec/div
DC, 1 : 1 probe
0V
Point w (Pin 4 of IC430)
V : 1V/div, H : 50 nsec/div
DC, 1 : 1 probe
0V
Point e (Pin 74 of IC436)
V : 2V/div, H : 0.1 µsec/div
DC, 1 : 1 probe
0V
2 4 9 8 2 9 9
Point r (Pin 47 of IC475)
V : 2V/div, H : 50 nsec/div
DC, 1 : 1 probe
0V