P-250
P-250
P-250
A
B
C
D
E
F
G
H
I
J
K
L
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
G
H
I
J
K
L
1
2
3
4
5
6
7
8
9
P-250 BLOCK DIAGRAM
D[0-31]
A[1-23]
16MHz
AUX PEDAL
SOFT
SUSTAIN
SOSTENUTO
+3.3D
PC/MAC
/IRQIF
MUTE
RD/WR
1MCLK
/IRQSWP
MIDI IN
MIDIOUT
/SPOFF
HPIN
CAS
RAS3L
CKE
CKIO
DQMLL
DQMLU
DQMUL
DQMUU
RESET
/PEDAL IN
PEDAL IN 1
PEDAL IN 2
PEDAL IN 3
X5
RD/WR
CAS
RAS3L
CKE
CKIO
DQMLL
DQMLU
DQMUL
DQMUU
/SDRAMCS
/SDRAMCS
PROGWP
RD
DQMLU
/DSCS
RD
/DSCS
/ROMCS
DIC
SWPCS (16-CS)
/W
AIT
D[0-15]
A[2-13]
D[16-31]
A[2-13]
D[0-15]
A[1-21]
D[0-15]
A[2-20]
D[0-15]
A[1-16]
LMD[0-15]
LMA[0-26]
HMD[0-15]
HMA[0-26]
HRD[0-15]
RA[0-10, 12, 13]
LRD[0-15]
D[0-15]
A[1-6]
6MHz
X1
DATA
LRCK
SCKI
BCK
MUTE
/D
A
C
IC
L+, L-
R+, R-
OUT1-L
7
1
OUT1-R
256FS
64FS
/MUTE
TR1
TR2
/MUTE, /SPOFF
HPIN
+12A, -12A
D+
D-
VBUS
5, 6
3
/DACIC
+5D
GND
ESDA
ESCL
/EIC
11.2896MHz
X3
+3.3A
+5A
+12V
+1.5D
+3.3D
+VCC-ADJ
+5D, DGND
+3.3D, DGND
/ROMCS
+3.3D
TR3,4
+3.3D
+3.3D
1,3,9,15,
29,35,41,
43,49,55,
75,81
+3.3D
37,38
+3.3D
37,38
+3.3D
37,38
+3.3D
37,38
MEL01
BCLK
+3.3D
+1.5D
+3.3D
21,35,47,59,
71,85,97,111,
163,183,205
+3.3D
+3.3D
+3.3D
+3.3D
+3.3D
+12V
+12V
8
6
2
1
7
2
6
3
2
5
6
1
7
-12V
-12V
4
OP AMP
+3.3A
+5A
9
23,24,28
+12V, -12V
+VCC-INT
(+3.3D)
3,29,81,134,
145,150,154,
175
HOST
SELECT
PC/MAC
MIDIRX
MIDITX
1MCLK
MIDI OUT
1R
1D
1Y
1Z
1A
1B
1MCLK
SOFT
SOSTENUTO
SUSTAIN
PEDAL Assembly
ASSIGNABLE FOOT PEDAL
4
2
AUXPEDAL, /PEDAL IN
VBUS, D-, D+
SW1
MIDI IN
2
3
6
+5D
TR1, 2
TR3, 4
+3.3D
+3.3D
+5D
16
5
8
8.38MHz
X10
SDA
SCL
BEND
MOD
/E-IC
SW
LED
SW
LED
SA[0-5], LA[0-7], D
A[0-8]
VR30
MIN
SONG BALANCE
ANI0
+5D
GND
GND
MAX
VR90
CONTRAST
+5D
+5D
+5D
+5D
GHD
Keyboard
8.38MHz
X1
SD
A
SCL
/E-IC
+5D
GND
SDA
SCL
/E-IC
+5D
(A-1
~
F2#)
(G2
~
C5)
(C5#
~
C7)
8.38MHz
X10
SDA
SCL
/E-IC
VR300
MIN
MID
ANI0
ANI1
ANI2
ANI3
ANI4
+5D
GND
MAX
VR200
MIN
LOW-MID
MAX
VR100
MIN
LOW
MAX
VR400
MIN
HIGH-MID
MAX
VR500
MIN
HIGH
MAX
+5D
/MUTE, /SPOFF
HPIN
+12A, -12A
+12
-12
AGND
/MUTE
POWER
AMP
MUTING
CIRCUIT
+3.3D
+B (RELAY)
DGND
+12
-12
A
GND
RY200
12
13
5,6
2,3
+5D
DGND
RY1
TR2-4
3
2
1
1
1
15
RE
F2
F3
BR
RE
TR1, IC2
2
3
D1, 2
F1
VR20
MIN
MASTER VOLUME
MAX
HPIN
/MUTEC
/MUTE
/MUTE
MUTING
CIRCUIT
TR700
TR710
+B
/MUTEC
/SPOFF
TR720
/MUTE
5
16
YE
YE
-VCC (AMP)
+VCC (AMP)
1
28CA1-8824689
+12A
+12A
-12A
-12A
8
4
4
-12A
+12A
18
20
+12A
+12C
-12A
+12
-12
+12C
+12
-VCC
+VCC
9,13
8,12,14
2
3
F1
*
*
The U model is a polarized type.
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