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YDP-323 BLOCK DIAGRAM
1
PANEL
REC, PLAY
2
(LD1) (LD2)
CN1
CN5
DM
DRIVER
CLK33 (XI)
X1
3
+3.3D
33.8688MHz
1,4
3
12
ICN
(+4.2V)
+3.3D
5
RESET
4
1-3
16 (ICN)
IC1
5P
MRSTN
DGND
MIDIRX
MIDITX, MIDICN
+3.3D
29,43,53
PROGRAM
MRSTN
14
WAVE
(RESET)
(MASK 64Mbit)
IC8 56P
33,52
4
DGND
+3.3D
37,47
FLASH ROM
MRSTN
14
(4Mbit)
(RESET)
IC15 48P
27,46
DGND
+3.3D
DRAM
1,6,22
(4Mbit)
IC21 44P
23,29,39,44
DGND
+5D
DGND
CN2
CN3
5P
5
5P
CN1
CN2
DJACK
+5D
DGND
+5D
8
6
TR1
IC1
Photo
8P
Coupler
5
2,3
TR2
+5D
JK1
JK2
IN
OUT
MIDI
6
YDP-323 CIRCUIT BOARD LAYOUT & WIRING
NOTE8) Wire harness is careful so that keycover rod may not be touch.
7
d
e
f
8
S3
d
e
c
M3
M8
b
CN1
P1
9
PANEL
S3
P2
M7
MVR
WH
CN2
S2
a
HP
WH
S2
A
10
DETAIL A:
M7
WH
a
HP circuit board
S2
11
PL circuit board
2NC-WE89380-3
3
12
YDP-323
A
B
C
END BLOCK ASSEMBLY L
TP1
MVR
FG
LED
SW
MASTER VOLUME
MATRIX
MATRIX
+5D
VR1
DEMO/SONG,
PIANO/VOICE,
SELECT, REC,
X1
PLAY,
8.38MHz
METRONOME
SW [0-5]
LD [0, 1]
+5D
CN2
9P
8P
9P
7P
CN4
+5D
LED
TA1
+3.3D
+2.5D
1, 3
X2
57, 58
18-23
2, 24, 47
4, 15, 46
10MHz
1,3,5,14,33,45,56,
66, 90, 120
89, 119
65,77,88,104,118
8
9
DGND
SWL01
MASTER CPU
29
5
KSNICN, KSNACK, KSNRX, KSNCLK
37
37
36
38
IC4
34
39
128P
36
44
SPOFFN
26
MUTEN
35, 27
41
HPSW
+3.3D
44, 40
30
29,43,53
PROGRAM
WAVE
14
16
(MASK 64Mbit)
CLK33 (XI)
IC16 56P
33,52
+3.3D
12
64, 41
16
DGND
16
14
(ICN)
IC29 14P
BUFFER
16
SWL01
8
12
11
1
44
SLAVE CPU
MCLK
9
8
2
42
BICK
IC7
5
6
3
40
128P
SDTI
2
3
4
43
LRCK
16
1
4 10 13 7
2, 24, 34, 36, 38
4, 15, 46
DGND
47, 66, 90, 120
89, 119
SWLICN
1,3,5,14,33,45,48-63,
+3.3D
+2.5D
65,77,88,104,118
DGND
OUT1
+3.3D
DGND
OUT2 REG
+2.5D
5P
5P
DGND
JK3
PEDAL
CN1
PEDAL
6P
PEDAL UNIT
SOFT
DAMPER
SOSTENUTO
NOTE6)
i
g
i
h
i
M5
P1
j
M2
M3
M7
f
M2
CN5
CN10
CN4
CN2
k
CN3
g
CN2
CN1
DM
P2
DJACK
h
CN7
CN3
M4
CN5
CN1
M1
P1
M5
l
GHD EBUS
Location
Part No.
Part Name
M1
(WE30650) Connector assembly PH
M2
(WE95320) Connector assembly MIDI
M3
(WE30950) Connector assembly PH
M4
(WE32710) Connector assembly PH
M5
WF740600 Connector assembly KB
M6
(WE95330) Connector assembly PS
M7
(WE31650) Connector assembly PH
M8
(WE95310) Connector assembly SP
P1
(WE95340) Connector assembly PN
P2
(WE95350) Connector assembly MV
S3
(WF42250) GND wire
S1
VS353700 Connector assembly PSW
S2
(WE30010) Connector assembly PH
WH
VT890700 GND wire
NOTE) The parts with "( )" in "Part No." are not available as service parts.
C
D
E
88 Keys (GHD_EBUS)
KEYBOARD
(A-1 ~ C7)
GHD M
GHD H
MK SUB
GHD EBUS L
F2 # )
(C5 #
~
(G2
~
C5)
~
C7)
(A-1
CN1
CN5
CN3
CN1
CN2
CN1
10,24
LKS
CN3
CN4
CN2
CN3
CN4
CN3
IC1
64P
SDA
13
40
SCL
14
/E-IC
41
36
+5D
GND
CN1
7P
7P
CN10
+5D
DGND
MAEQ
+3.3D
1, 4, 10
CPU
(E-HOST)
19, 20, 21
IC24
48P
48
DAMPER
47
SOSTE
46
SOFT
3. 6. 7
41-45
DGND
CN2
CN7
MUTEN (/MUTE)
MUTEN
SPOFFN (/SPOFF)
SPOFFN
HPSW
HPSW (/HPIN)
+12V
+5A
LPF
8
IC14 8P
6, 7, 8, 14
L
11
2
1
12
3
DAC
IC11
16P
7
R
9
6
5
10
+12V
+12V
PON
5
13
4
AGND
AGND
AGND
AGND
IC5
IC10
IC1
OUT
+5
IN
+12
OUT
+5D
+5A
+12V
+12V
REG
REG
DGND
AGND
AGND
IC2
+12V
OUT
+5
+5D
REG
ICN
DGND
AGND
CN1
CN4
+5D
+5D
DGND
DGND
CONTENTS
YDP-323 OVERALL CIRCUIT DIAGRAM
DJACK................................2
MK SUB...............................3
DM................................2
MVR.................................3
GHD EBUS L........................3
PANEL.................................2
GHD H.................................3
PEDAL.................................2
GHD M.................................3
PL.....................................3
HP.........................................3
PS....................................3
MAEQ..................................3
l
v
m
w
j
NOTE7) Wire harness is careful so that keyboard hammer
may not be touch.
o
q
CN2
M6
M6
MAEQ
CN1
CN6
p
CN4
CN2
M4
v
m
w
M8
M1
n
Description
Fix Position
l
v
m w
DM CN1 - MAEQ CN4
j
i
g
h
DM CN2 - DJACK CN1
j
i
f
e
DM CN3 - DJACK CN2
l
DM CN7 - MAEQ CN2
i
j
k
DM CN10 - Keyboard
p
MAEQ CN1 - PS CN2
j
i
f
e
d
c
b
MAEQ CN5 - HP CN1
n
p
o
q
r
- Speaker R
MAEQ CN6
- Speaker L
w m v
l
k
j
i
f
b
c
d
e
f
i
- DM CN4
PANEL CN1
- DM CN5
b
c
d
e
f
g
h
k
j
i
f
e
d
c
b
MAEQ CN3 - MVR CN2
MV TP1 - Keybed
b
c
PS CN1 - Power switch
y
r
s
t
x
u
a
HP CN2 - PL
a
HP - Keybed
D
E
F
WARNING
Components having special characteristics are marked Z and must be replaced
with parts having specification equal to those originally installed.
Note : See parts list for details of circuit board component parts.
8P
CN3
L
R
L
R
+12V
+12V
+18V
10,17
8
IC6 8P
IC7,10 14P
IC4 17P
IC9,11 8P
5
7
2
15
13,14
1
7
11
3
EQ
4
4
5
AGND
/MUTE
AGND
AGND
OP AMP
POWER AMP
+12V
/MUTE
/SPOFF
/MUTE
TR1
MUTE2
+B
TR2
+12V
4
RY1
IC3 16P
12
5
13
3
6
AGND
POWER AMP
OP AMP
+12V
8
IC5 8P
2
1
7
6
PS
4
!
AGND
CN1
CN2
+B
+B
DB1
+18V
+18V
AGND
IN
+18V
DGND
IN
+12V
o
q
r
n
y
r
s
t
CN1
x
S1
PS
y
M8
u
S1
POWER
Note
4P-350
5P-250
5P-350
11P-150
Main Unit
7P-530
5P-150
7P-850
4P
e
9P/7P
8P-850
End Block Assembly L
End Block Assembly R
2P-150
Front Rail Assembly
L = 150 mm
HP Circuit Board
2NC-WE89380-4
1
F
G
H
YDP-323
SPEAKERS
RY2
CN6
L
R
+12V
TR3
MUTE2
HP
PL
CN1
LED
/HPIN
/HPIN
HP_L
HP_R
AGND
CN5
HP1
HP2
PHONES
!
!
!
!
!
28CA1-8834704
1
NOTE1) The symbol sign of union parts.
: Insulation lock tie
: Filament tape
: Cord binder
: Cable holder
NOTE2) Reference for assembly wiring only.
WH S2
NOTE3) Wire harness
is fixed to side arm with filament tape.
NOTE6)
WH S2
NOTE4) Wire harness
should be passed on the side of side arm
NOTE11)
assembly.
NOTE5) PS cover is used for U.S.A. model only.
M2 M3 S1
NOTE6)
is careful so that a keycover rod may not be touch.
M8
NOTE9) Red and brown of
is connected to Speaker-R.
M8
NOTE10) SP wire harness
is careful so that Z angle may not be touch.
y
NOTE11) Cable holder
is not used for U model.
YDP-323
G
H
1
2
3
4
5
6
7
8
9
10
11
12
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