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2
3
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5
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7
8
9
10
11
12
A
B
C
D
E
F
G
H
A
B
C
D
E
F
G
H
1
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YDP-323
YDP-323
YDP-323
<Page. 1>
DETAIL A:
A
DJACK
MAEQ
GHD EBUS
POWER
PANEL
MVR
HP
DM
PS
HP circuit board
PL circuit board
CN2
CN1
CN2
CN1
M1
(WE30650) Connector assembly PH
DM CN1 - MAEQ CN4
l
v
m w
4P-350
M2
(WE95320) Connector assembly MIDI
DM CN2 - DJACK CN1
j
i
g
h
5P-250
M3
(WE30950) Connector assembly PH
DM CN3 - DJACK CN2
j
i
f
e
5P-350
M4
(WE32710) Connector assembly PH
DM CN7 - MAEQ CN2
l
11P-150
M5
WF740600 Connector assembly KB
DM CN10 - Keyboard
i
j
k
7P-530
M6
(WE95330) Connector assembly PS
MAEQ CN1 - PS CN2
p
5P-150
M7
(WE31650) Connector assembly PH
MAEQ CN5 - HP CN1
j
i
f
e
d
c
b
7P-850
M8
(WE95310) Connector assembly SP
MAEQ CN6
- Speaker R
n
p
o
q
r
4P
- Speaker L
w m v
l
k
j
i
f
e
P1
(WE95340) Connector assembly PN
PANEL CN1
- DM CN4
b
c
d
e
f
i
9P/7P
- DM CN5
b
c
d
e
f
g
h
P2
(WE95350) Connector assembly MV
MAEQ CN3 - MVR CN2
k
j
i
f
e
d
c
b
8P-850
S3
(WF42250) GND wire
MV TP1 - Keybed
b
c
S1
VS353700 Connector assembly PSW
PS CN1 - Power switch
y
r
s
t
x
u
S2
(WE30010) Connector assembly PH
HP CN2 - PL
a
2P-150
WH
VT890700 GND wire
HP - Keybed
a
L = 150 mm
Main Unit
End Block Assembly L
End Block Assembly R
Front Rail Assembly
HP Circuit Board
S2
P2
S2
WH
WH
S2
M7
M7
S3
S3
M3
M2
M5
M2
M3
M7
P1
P2
P1
M1
M5
M4
M8
M6
M6
M1
S1
S1
M8
M4
M8
WH
a
a
b
c
d
e
g
i
j
o
q
r
y
s
t
x
u
k
l
m
n
p
v
w
h
f
CN2
CN1
CN1
CN10
CN4
CN2
CN2
CN2
CN1
CN6
CN4
CN3
CN3
CN7
CN1
CN1
CN5
CN5
CN2
P1
NOTE8) Wire harness is careful so that keycover rod may not be touch.
NOTE6)
NOTE7) Wire harness is careful so that keyboard hammer
may not be touch.
d
f
i
i
l
v
o
q
r
m
w
n
j
e
g
h
y
NOTE6)
NOTE11)
Location
Part No.
Part Name
Description
Fix Position
Note
NOTE) The parts with "( )" in "Part No." are not available as service parts.
2NC-WE89380-3
3
2NC-WE89380-4
1
NOTE1) The symbol sign of union parts.
: Insulation lock tie
: Filament tape
: Cord binder
: Cable holder
NOTE2) Reference for assembly wiring only.
NOTE3) Wire harness
WH
S2
is fixed to side arm with filament tape.
NOTE4) Wire harness
WH
S2
should be passed on the side of side arm
assembly.
NOTE5) PS cover is used for U.S.A. model only.
NOTE6)
M2
M3
S1
is careful so that a keycover rod may not be touch.
NOTE9) Red and brown of
M8
is connected to Speaker-R.
NOTE10) SP wire harness
M8
is careful so that Z angle may not be touch.
NOTE11) Cable holder
y
is not used for U model.
+B
MUTE2
+3.3D
ICN
(+4.2V)
D
A
MPER
SOSTE
SOFT
88 Keys (GHD_EBUS)
(A-1 ~ C7)
(A-1
~
F2#)
(G2
~
C5)
(C5#
~
C7)
SDA
SCL
/E-IC
+5D
GND
SW [0-5]
LD [0, 1]
REC, PLAY
(LD1) (LD2)
DEMO/SONG,
PIANO/VOICE,
SELECT, REC,
PLAY,
METRONOME
SD
A
SCL
/E-IC
E-IC
, SD
A, SCL
+5D
KEYBOARD
SW
MATRIX
LED
MATRIX
END BLOCK ASSEMBLY L
PEDAL UNIT
CN1
6P
+5D
+5D
+3.3D
D
AMP
SOSTE
SOFT
SOFT
SOSTENUTO
DAMPER
MIDI ICN
MIDIRX
MIDITX
+5D
Photo
Coupler
OP AMP
OP AMP
POWER AMP
POWER AMP
+5D
+5D
+5D
+5D
DGND
DGND
DGND
+5D
FG
TP1
+5D
MIDIRX
MIDITX, MIDICN
+3.3D
1-3
3
CLK33 (XI)
CLK33 (XI)
MRSTN
(RESET)
MRSTN
MRSTN
(RESET)
KSNICN, KSNACK, KSNRX, KSNCLK
DAMPER
SOSTE
SOFT
SPOFFN
MUTEN
HPSW
4
5
+3.3D
1,4
+3.3D
SYD
, SDO
SWLICN
16
16
16
16
12
9
5
2
1
4 10 13 7
1
2
3
4
5
14
8
6
3
8
+B
+18V
+B
+18V
AGND
DGND
+12V
AGND
AGND
DGND
DGND
+3.3D
+2.5D
OUT1
OUT2 REG
+3.3D
+3.3D
+3.3D
8
+12V
+5A
+3.3D
+3.3D
+3.3D
+2.5D
+3.3D
+2.5D
LPF
SWLICN
8
+12V
2
15
7
11
4
5
4
8
+12V
+12V
+12V
+18V
SPOFFN
MUTEN
HPSW
+12V
AGND
SPOFFN (/SPOFF)
MUTEN (/MUTE)
HPSW (/HPIN)
/HPIN
+12V
+12V
AGND
AGND
+5A
ICN
OUT
IN
+18V
AGND
+12V
OUT
IN
+5D
L
R
L
R
+12V
/HPIN
FG
LED
4
6
+12V
AGND
4
AGND
4
AGND
13
DGND
DGND
DGND
33,52
DGND
33,52
DGND
27,46
DGND
23,29,39,44
DGND
DGND
DGND
AGND
AGND
AGND
AGND
HP_L
HP_R
10,17
/MUTE
MUTE2
/SPOFF
/MUTE
+12V
/MUTE
F1
J2
1
5
15
12
!
J1
Note) J1: OPEN
J2: SHORT
2
!
+B
+18V
+12V
+5D
DGND
OUT
IN
DGND
DGND
DGND
29,43,53
29,43,53
37,47
1,6,22
1,3,5,14,33,45,56,
65,77,88,104,118
1,3,5,14,33,45,48-63,
65,77,88,104,118
13,14
28CA1-8834704
1
DJACK................................2
DM................................2
GHD EBUS L........................3
GHD H.................................3
GHD M.................................3
HP.........................................3
MAEQ..................................3
MK SUB...............................3
MVR.................................3
PANEL.................................2
PEDAL.................................2
PL.....................................3
PS....................................3
CONTENTS
YDP-323 OVERALL CIRCUIT DIAGRAM
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.
■
YDP-323 BLOCK DIAGRAM
■
YDP-323 CIRCUIT BOARD LAYOUT & WIRING