Yamaha DP-U50 Service Manual - Page 27

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Yamaha DP-U50 Service Manual
A
B
I

BLOCK DIAGRAM

1
+3.3S
IC412
+5S1
XL402
12MHz
3
USB DEVICE
6
CONTROLLER
L401
DMNS
USB
7
DPLS
USS-820DT
IC418A
IC418B
2
COAX IN
PC
IC418C
OPT IN
SIGNAL
DETECTOR
IC418E
IC418D
AUX 1
OPT IN
DUTY CORRECT
IC401
OPT OUT
3
IC445A
L
2
1
11-14
10
L
INPUT
PC IN
SELECTOR
R
6
7
R
17-20
21
IC474A
IC445B
LC75342M
L
AUX 1 IN
R
1, 2, 30
L
AUX 2 IN
R
4
SERIAL CONTROL
LOOP BACK
5
See page E-38/J-36
(DSP)
6
C
XL404
+3.3S
+5S1
+3.3S
11.2896MHz
4
36 35
46
47
32
DATA BUS
30
IRQN (USBINT)
DATA BUS
31
SOFN (USBSOF)
29
SUSPN
IC430
34
TXFIFO
RXFIFO
IDCSN (USBCS)
28
DUAL PORT SRAM
RWUPN
32
RESET (USBRST)
USB
S/P CONV
143
CI0
USB
P/S
CONV
146
CI2
SEL
143
SELB
148
YO
118
PAI13
119
PAI14
DIT
PAO11
PAI15
175
PAO10
EMBEDDED
ARRAY
16IN 12OUT
D-RST
+5A
PATCH BAY
IC475
LC27287B
IC478A
18
5
7
106
PAI3
17
9
A/D
IC478B
CONVERTER
3
1
16
IC477
IC478C
CS5360
10
8
13
IC478D
12
14
14
PLL
7, 8, 12
DFS CONTROL
134-136
CFS CONTROL
137, 138, 140
CLOCK
MUX
SFS CONTROL
91, 92, 94
150-152
SERIAL I/F
SERIAL I/F
CCB
SZ
SERIAL CONTROL
SERIAL CONTROL
DFS CONTROL
D
E
ADDRESS BUS
XL403
7MHz
34
72
74
38
36
24
33
34
USBINT
26
USBSOF
25
SUSPN
104
USBCS
45
RWUPN
105
GARST
USBRST
102
CPU
36
(USBRST)
CPUCLK
CPUCLK
37
83
GACS
EACS
35
40
DMVDD
DMVDD
38
IC436
112
FIFOIRQ
EAINT
HD6417014
5
28
106 - 108, 110
40 CAPTIN
172
PAO7
PAO9
31 32 43
30
D-RST
PAI8
XL401
24.576MHZ
1
2
152
MAIN DSP
DOLBY DIGITAL
PAO9
174
14
DTS
DIR
DECODER
113
PAI8
48
PAO3
35
168
PAO3
101-105
XFS CONTROL
49-51, 53, 54
SUB DSP
PAO4
169
PAO4
42
L/R
VIRTUAL 3D
PAO5
170
PAO5
41
LS/RS
SEL
BASS
PAO6
171
PAO6
40
C/LFE
RE-DIRECTION
PAI7
PAI7
5
112
SEL
AC3D3
IC417
YSS928
PAI4
107
PAI4
PAI5
108
PAI5
PAI6
109
PAI6
SERIAL I/F
120-123
SERIAL CONTROL
149-151
SX
28, 29
SFS CONTROL
D-RST
+5A
SF MUTE
IC458A
24
PAO0
16
2
1
L
DAC
27
Q417
17
3
IC439
AD1854
3-5
7
R
12
5
Q418
13
6
SFS CONTROL
2, 25, 26
IC458B
D-RST
+5A
MIX MUTE
IC454A
24
USBDAC0
1
L
16
2
27
Q410
17
3
DAC
IC440
3-5
R
AD1854
12
5
7
Q411
13
6
2, 25, 26
IC454B
E-26/J-24
F
DATA BUS
DC-ON
AC-DET(+12S)
POWER
DETECT/
RESET
+5D-SUB
RESET
Q416, 419
11
28
+5S1
4M FLASH ROM
IC438
15
26
RYBY
84
88
FLASHCS
41
SRAMCS
44
REM
REMOTE
85
U301
SENSOR
A/D1
91
KEY
SW301-308
P-SW
POWER
99
SW310
SW
E-A/E-B
86, 87
PS
92
SW309
(PROTECTION)
VOLUME
MUTE CONTROL
89
POWER
FL
V301
61-64
FL DRIVER
42, 49 -51
IC301
55
D305
4M
DRAM
-21V
POW
IC432
FL2
FL1
FUNCTION LED
D301-304
Q30, 31
+5A
IC10
D15
68-71
LED-PC, A1, A2, TU
I/O PORT
POW
G
L/R
38
SDOA0
LS/RS
37
SDOA1
+5D-SW (+5M)
IC11
D16
C/LFE
36
SDOA2
POW
G
+15A
Q17
+9V
IC12
D8
Q26-29
PAI4
62
PAI4
G
PAI5
61
PAI5
60
PAI6
PAI6
59
SDOB3
Q18
-15A
127
SDOB3
D9
156
PAI4
154
PAI5
G
128
PAI6
L/R
4
SDOA0
3
SDOA1
LS/RS
-21V
Q24
157
SDOA2
C/LFE
+ 12S (AC-DET)
D14
+5D-SUB
IC3
+2.5V
G
+5M
+3.3V
+3.3V
IC413
+2.5V
IC406
VOLUME
A-MUTE
IC473A
IC471A
IC470A
2
1
Q424
2
1
2
1
9
5
Q427
IC474B
LC75342M
Q423
7
7
6
7
6
6
22
26
Q428
IC470B
IC473B
IC471B
IC8
3
8
+
IC6A
IC7A
4
2
3
1
6
8
5
7
IC6B
IC7B
G
H
DP-U50
29
24
SRAM
IC447
22
See page E-39/J-37
(OPE)
YE
YE
See page E-39/J-37
(MAIN)
OR
OR
F1
RE
BE
BL
BE
RE
GR
BL
A-MUTE
Q420
L
PRE OUT
Q421
R
S-MUTE
SUB
Q19, 20
WOOFER
A-MUTE
Q1
PHONES
Q2
E-27/J-25