WK-1500
PITCH
BEND
WK-1500
GM SOUND KEYBOARD
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MIDI:
16-timbre multi-timbre receive (General MIDI Level 1)
Built-in speakers:
Input/Output Jacks
Power supply:
Headphones:
Output jacks:
12 cm diameter × 2 (output: 5 W + 5 W)
12 V DC
Stereo standard jack
Output impedance: 100 Ω
Output voltage 2.5 V (RMS) MAX
Standard jack (sustain, sostenuto, soft, rhythm start/stop)
IN, OUT
Approximately 6 minutes after the last operation
2-way AC or DC source
Assignable Jack:
MIDI terminals:
Auto power off:
Power source:
AC: AC adaptor
DC: 6D size dry batteries
Power consumption:
Dimensions (HWD):
Weight:
18 W
116.1 × 30.2 × 11.0 mm (45-3/4 × 11-7/8 × 4-5/16 inches)
6.8 kg (15.0 lbs) excluding batteries
ELECTRICAL
Current drain with 9 V DC:
No sound output
Maximum volume
480 mA ± 20%
with 10 polyphonic notes in tone No. 081
Volume; maximum
1720 mA ± 20%
Left channel 175 mV ± 20%
Left channel 1420 mV ± 20%
12.0 V
Phone output level (Vrms with 8 load each channel):
with key C2 pressed in tone No. 042
Line output level (Vrms with 47 k load each channel):
with key C2 pressed in tone No. 042
Minimum operating voltage:
— 3 —
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BLOCK DIAGRAM
LED driver
IC371
BA612
LED driver
Q104 ~ Q111
7-seg. LED
LEDs
MIDI
IN
OUT
La ~ Lg, Lp
P41
P40
KO1 ~ KO3
LS0 ~
LS7
KO Signal
Generator IC102
TC74HC174AF
KO0 ~
KO5
Buttons
CPU
LSI14
HD6433294A19F
Keyboard
KI1 ~ KI5
Power Switch
POWER
FI0 ~ FI7
SI0 ~ SI7
Reset IC
KC0 ~
KC7
IC5
RESET
RH5VL36AA
A0 ~
A14
D0~D7
Working Storage RAM
(64K-bit)
LSI105
SRM2264LM90-B
Key Controller
LSI107
HG52E35P
A0 ~ A14
A0 ~ A2
A0 ~ A3
RA0 ~ RA19
Effect RAM
(256K-bit)
LSI103
Sound Source ROM
DSP
LSI102
HG51B115FD
EA0 ~ EA14
(16M-bit)
LSI101
TC5316200CF-C112
LC33832M-70
ED0 ~ ED7
RD0 ~ RD15
WCK1
SLOP
BCK
D/A Converter
LSI104
UPD6376GS
DVDD
LVDD
AVDD
VC
VCC
VDD
Filter
IC101
Filter
IC101
Output
Main
Volume
Power Supply Circuit
IC401, Q401 ~ Q405
Speakers
Power Amplifier
IC402
LA4598
— 4 —
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CIRCUIT DESCRIPTION
KEY MATRIX
KC0
KC1
E1 (1)
E1 (2)
C2 (1)
C2 (2)
G#2 (1)
G#2 (2)
E3 (1)
E3 (2)
C4 (1)
C4 (2)
G#4 (1)
G#4 (2)
E5 (1)
E5 (2)
C6 (1)
C6 (2)
G#6 (1)
G#6 (2)
E7 (1)
E7 (2)
KC2
F1 (1)
F1 (2)
C#2 (1)
C#2 (2)
A2 (1)
A2 (2)
F3 (1)
F3 (2)
C#4 (1)
C#4 (2)
A4 (1)
A4 (2)
F5 (1)
F5 (2)
C#6 (1)
C#6 (2)
A6 (1)
A6 (2)
F7 (1)
F7 (2)
KC3
KC4
G1 (1)
G1 (2)
D#2 (1)
D#2 (2)
B2 (1)
B2 (2)
G3 (1)
G3 (2)
D#4 (1)
D#4 (2)
B4 (1)
B4 (2)
G5 (1)
G5 (2)
D#6 (1)
D#6 (2)
B6 (1)
B6 (2)
G7 (1)
G7 (2)
KC5
G#1 (1)
G#1 (2)
E2 (1)
E2 (2)
C3 (1)
C3 (2)
G#3 (1)
G#3 (2)
E4 (1)
E4 (2)
C5 (1)
C5 (2)
G#5 (1)
G#5 (2)
E6 (1)
E6 (2)
C7 (1)
C7 (2)
KC6
A1 (1)
A1 (2)
F2 (1)
F2 (2)
C#3 (1)
C#3 (2)
A3 (1)
A3 (2)
F4 (1)
F4 (2)
C#5 (1)
C#5 (2)
A5 (1)
A5 (2)
F6 (1)
F6 (2)
C#7 (1)
C#7 (2)
KC7
FI0
SI0
F#1 (1)
F#1 (2)
D2 (1)
A#1 (1)
A#1 (2)
F#2 (1)
F#2 (2)
D3 (1)
FI1
SI1
FI2
SI2
FI3
SI3
FI4
SI4
FI5
SI5
FI6
SI6
FI7
SI7
FI8
SI8
FI9
SI9
B1 (1)
B1 (2)
G2 (1)
G2 (2)
D#3 (1)
D#3 (2)
B3 (1)
B3 (2)
G4 (1)
G4 (2)
D#5 (1)
D#5 (2)
B5 (1)
B5 (2)
G6 (1)
G6 (2)
D#7 (1)
D#7 (2)
D2 (2)
A#2 (1)
A#2 (2)
F#3 (1)
F#3 (2)
D4 (1)
D3 (2)
A#3 (1)
A#3 (2)
F#4 (1)
F#4 (2)
D5 (1)
D4 (2)
A#4 (1)
A#4 (2)
F#5 (1)
F#5 (2)
D6 (1)
D5 (2)
A#5 (1)
A#5 (2)
F#6 (1)
F#6 (2)
D7 (1)
D6 (2)
A#6 (1)
A#6 (2)
F#7 (1)
F#7 (2)
D7 (2)
Note: Each key has two contacts, the first conatct (1) and second contact (2).
Key
FI
First contact (1)
Second contact (2)
KC
SI
— 5 —
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NOMENCLATURE OF KEYS
F#1 G#1A#1
C#2 D#2 F#2 G#2A#2
C#3 D#3 F#3 G#3A#3
C#4 D#4 F#4 G#4A#4
C#5 D#5
F#5 G#5A#5
C#6 D#6 F#6 G#6A#6
C#7 D#7
F#7
E1 F1 G1 A1 B1 C2 D2 E2 F2 G2 A2 B2 C3 D3 E3 F3 G3 A3 B3 C4 D4 E4 F4 G4 A4 B4 C5 D5 E5 F5 G5 A5 B5 C6 D6 E6 F6 G6 A6 B6 C7 D7 E7 F7 G7
BUTTON MATRIX
KI1
KI2
KI3
KI4
KI5
KI6
KI7
CH8/
CHORD3
CH10/
RHYTHM
KO0
KO1
KO2
KO3
KO4
KO5
KO6
KO7
KO8
KO9
SPLIT
LAYER
CH7/CHORD2
CH9/BASS
TRANSPOSE MAGICAL
MIDI
RHYTHM
TONE
PAD
/TUNE
PRESET
CH6/
CHORD1
CH2/
UPPER2
CH3/
LOWER1
CH4/LOWER2 CH5/PAD
TOUCH
RESPONSE
DIGITAL
EFFECT
3
2
6
5
9
DEMO
CH1/
UPPER1
8
1
0
F
4
–
7
ACM
VOLUME
SONG
MEMORY
MODULATION
MIXER
INTRO
C
+
D
SYNCH/
ENDING
NORMAL/
FILL–IN
VAR./FILL-IN
E
START/
STOP
TEMPO
DOWN
MODE
A
CH12/TR2
A
B
CH13/TR3
B
TEMPO UP
CH11/TR1
CH14/TR4 CH15/TR5
CH16/TR6
E
BANK
SELECT
C
D
STORE
POWER SUPPLY CIRCUIT
The power supply circuit generates six voltages as shown in the following table. VDD voltage is always
generated. The others are controlled by APO signal output from the CPU.
Name
VDD
Voltage
+5.2 V
+5.3 V
+5.1 V
+5.2 V
+12 V
For operation of
CPU, Reset IC, Working storage RAM, KO signal generator
DVDD
AVDD
LVDD
VCC
DSP, Key touch LSI, Sound source ROM, Effect RAM
DAC, Filter
LED Driver
Pilot lamp
VC
+12 V
Power amplifier
— 6 —
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CPU (LSI14: HD6433294A19F)
The 16-bit CPU contains a 32k-bit ROM, a 1k-bit RAM, seven 8-bit I/O ports, an A/D convertor and MIDIl
interfaces. The CPU accesses to the working storage RAM, the DSP and the key touch LSI. The CPU
interprets MIDI message using the working storage RAM. The CPU also controls buttons and LEDs.
The following table shows the pin functions of LSI14.
Pin No.
Terminal
P50/TXD
P51/RXD
P52/SCK
-RESET
-NMI
In/Out
Out
In
Function
1
2
MIDI signal output
MIDI signal input
3
Out
In
Reset signal output
Reset signal input
4
5
In
Power ON trigger signal input
+5 V source
6
VCC
In
7
-STBY
VSS
In
Standby signal input. Connected to +5 V.
Ground (0 V) source
8
In
9, 10
11, 12
13
XTAL, EXTAL
MD1, MD0
AVSS
P70
In
20 MHz clock input
In
Mode selection input
Ground (0 V) source
In
14
In
Analog input terminal for the pitch bend wheel
Input terminals from keys (KI1 ~ KI7)
+5 V source
15 ~ 21
22
P71 ~ P77
AVCC
Out
In
23 ~ 30
31
P60 ~ P67
VCC
Out
In
LED drive signal output
+5 V source
32 ~ 48
40
A0 ~ A15
VSS
Out
In
Address bus
Ground (0 V) source
49 ~ 56
57
D0 ~ D7
P40
In/Out
Out
Out
Out
Out
In
Data bus
Clock for KO signal generator
KO signal data
58
P41
59
P42
APO signal output
60
P43
Read enable signal output
Write enable signal output
Not used
61
P44
62
P45
—
63
P46
Out
—
10 MHz clock output
Not used. Connected to +5 V source.
64
P47
DIGITAL SIGNAL PROCESSOR (LSI11: HG51B155FD-1)
Upon receipt of note numbers and their velocities, the DSP reads sound and velocity data from the sound
source ROM in accordance with the selected tone; the DSP can read rhythm data simultaneously when a
rhythm pattern is selected. Then it provides 16-bit serial signal containing data of the melody, chord,
bass, and percussion to the DAC. When an effect selected, the DSP adds the effect to the sound data
using a 256k-bit RAM.
The following table shows the pin functions of LSI11.
— 7 —
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Pin No.
1 ~ 8
9, 10
11
Terminal
CD0 ~ CD7
CE1, TRSB
GND7
In/Out
In/Out
—
Function
Data bus
Not used
In
Ground (0 V) source
12
CK16
Out
In
Terminal for 24.576 MHz clock check point
+5 V source
13
VCC6
14
CK0
In
Clock input. Connected to terminal CK16.
Not used
15
TCKB
—
16
VCC1
In
+5 V source
17
GND1
In
Ground (0 V) source
18, 19
20
XT0, XT1
SGL
In/Out
In
24.576 MHz clock input/output
System control terminal. Single chip system: Open
Chip select signal input
Address bus
21
CCSB
CA0 ~ CA3
CE0
In
22 ~ 25
26
In
In
Not used. Connected to ground.
Write enable signal
27
CWRB
CRDB
—
In
28
In
Read enable signal
29 ~ 32
33
—
Not used
RESB
TESB
In
Reset signal input
34
In
Not used. Connected to +5 V.
Not used
35 ~ 39
40 ~ 49
52 ~ 57
50
—
—
RD0 ~ RD15
In
Data bus for the sound source ROM
VCC2
GND2
RA23
RA22
RA21
In
+5 V source
51
In
Ground (0 V) source
58
Out
Out
Out
Not used
59
Chip select signal for the sound source ROM
Not used
60
61 ~ 73
75 ~ 82
74
RA0 ~ RA20
Out
Address bus for the sound source ROM
GND5
WOK2
VCC3
GND3
WOK1
SOLM
SOLP
BOK
In
Out
In
Ground (0 V) source
Not used
83
84
+5 V source
85
In
Ground (0 V) source
Word clock for the DAC
Not used
86
Out
Out
Out
Out
—
87
88
Serial sound data output
Bit clock output
Not used
89
90 ~ 92
93
—
VCC5
In
+5 V source
94, 95
97 ~ 105
107, 109
110, 112
96
EA0 ~ EA14
EWEB
Out
Out
Address bus for the effect RAM
Write enable signal for the effect RAM
— 8 —
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Pin No.
106
Terminal
EOEB
In/Out
Out
In
Function
Read enable signal output for the effect RAM
+5 V source
108
VCC7
111
ECEB
Out
—
Chip select signal output for the effect RAM
Not used
113 ~ 117
118
ED11 ~ ED15
VCC4
In
+5 V source
119
GND4
In
Ground (0 V) source
120 ~ 122
123 ~ 130
131
ED8 ~ ED10
ED0 ~ ED7
GND6
—
Not used
In/Out
In
Data bus for the effect RAM
Ground (0 V) source
132 ~ 134
135, 136
—
—
Not used. Connected to ground.
Not used
—
—
Block diagram of DSP and DAC circuit
Sound Source ROM
LSI12
MX23C2410MC-12CA51
SOLP: Sound data
BOK: Bit clock
CE
A0 ~ A20
Q0 ~ Q15
WOK1: Word clock
RD0 ~
RD15
RA0 ~
RA20
RA22
DAC
IC11
D0 ~ D7
A0 ~ A3
SOLP
BOK
ROUT
SI
DSP
CLK
LSI11
LOUT
WOK1
LSIB
KO signal
generator
CCSB
CRDB
LRCK
RDAB
WRAB
RESET
UPD6376GS
HG51B155FD-1
LSI17
CWRB
RESB
PG
X11
UPD65611GB
EWEB
ECEB EOEB
24.576 MHz
EA0 ~
EA14
ED0 ~
ED7
WE
OE
CS
I/01 ~ I/08
A0 ~ A14
Effect RAM (256K-bit)
LSI13
LC33832M-70-TLM
— 9 —
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DAC (IC11: UPD6376GS)
The DAC receives 16-bit serial data output from the DSP. The data contains digital sound data of the
melody, chord, bass, and percussion for the right and left channels. The DAC converts the data into
analog waveforms by each channel and output them separately.
The following table shows the pin functions of IC11.
Pin No.
Terminal
SEL
In/Out
In
Function
Mode selection terminal. Connected to ground.
Ground (0 V) source for the internal digit circuit
Not used.
1
2
D.GND
NC
In
3
—
In
4
DVDD
A.GND
R.OUT
A.VDD
R.REF
L.REF
L.OUT
A.GND
LRCK
LRSEL
SI
+5 V source for the internal digital circuit
Ground (0 V) source for the right channel
Right channel sound waveform output
+5 V source for the internal analog circuit
Right channel reference voltage terminal
Left channel reference voltage terminal
Left channel sound waveform output
Ground (0 V) source for the left channel
Word clock input
5
In
6
Out
In
7, 8
9
In
10
11
12
13
14
15
16
In
Out
In
In
In
Not used. Connected to ground.
Sound data input
In
CLK
In
Bit clock input
KEY CONTROLLER (LSI16: HG52E35P)
The key controller generates key scan signals and provides them to the keyboard. By counting the time
between first-key input signal FI and second-key SI from the keyboard, the key controller detects key
velocity. The note number and its velocity data are read at regular intervals by the CPU.
Key Controller
LSI16
HG52E35P
RDAB
Keyboard
WRAB
CRDB
CWRB
CKI
LSI17
KC0
KC7
KC
CLKA
HGB
Key scan signal
Key input signal
HG52E35P
CCSB
First contact
FI
RESET
RESB
CD0
FI0
SI0
SI9
Data bus
CD7
SI
FI9
Second contact
CA0 ~ CA2
Address bus
— 10 —
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The following table shows the pin functions of LSI16.
Pin No.
Terminal
REQB
FI8 ~ FI10,
SI8 ~ SI10
VCC
In/Out
Function
1
Out
Not used.
2, 3, 60 ~ 63
In
Not used. Connected to +5 V.
4
5
In
In
+5 V source
CRDB
Read enable signal input
Write enable signal input
Chip select signal input
Not used. Connected to +5 V.
Reset signal input
6
CWRB
CCSB
In
7
In
8, 9, 11
10
T, STBY, W
RESB
In
In
12
CKI
In
10 MHz clock input
13, 14
15
TMD, TST
CKO
In
Not used. Connected to ground.
Not used.
Out
In
16
GND
Ground (0 V) source
17
XIN
In
Not used. Connected to ground.
Not used.
18
XOUT
Out
Not used. Connected to ground.
19
TRES
CD0 ~ CD7
GND
In
In/Out
In
20 ~ 23, 25 ~ 28
Data bus
Ground (0 V) source
24
29 ~ 31
CA0 ~ CA2
VCC
In
Address bus
+5 V source
32
In
33 ~ 39, 41 ~ 43,
53 ~ 55, 57 ~ 63
40
FI0 ~ FI9,
SI0 ~ SI9
VCC
In
Key input signal input
+5 V source
In
Out
In
44 ~ 47, 49 ~ 52
48, 56
KC0 ~ KC7
GND
Key scan signal
Ground (0 V) source
+5 V source
64
VCC
In
FILTER BLOCK
Since the sound signals from the DAC are stepped waveforms, the filter block is added to smooth the
waveforms.
AVDD
AVDD
C333(H)
Q210/211
2SC1740
50 V 0.47 µ
-
16 V 10 µ
From the DAC
1 K
1 K
1 K
+
To main volume
IC203
M5218APR
AG
AG
AG
— 11 —
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POWER AMPLIFIER (IC201: LA4620)
The power amplifier is a two-channel amplifier with standby switch.
Boot11
OUT11
PoGND1
19
20
21
+
IN11+
3
Input
Amp.
Pre-drive
Amp.
Power
Amp.
IN11–
5
–
–
RL Short
Protector
IN12–
4
Input
Amp.
Pre-drive
Amp.
Power
Amp.
22 OUT12
+
Boot12
23
Terminal
Protection
Circuit
Pop Noise
Prevention
Circuit
Ripple
Filter
1
VCC1
PriGND
6
Boot21
18
17
15
14
12
+
IN21+
IN21–
9
7
Input
Amp.
Pre-drive
Amp.
Power
Amp.
OUT21
PoGND2
OUT22
Boot22
–
–
RL Short
Protector
IN22–
8
Input
Amp.
Pre-drive
Amp.
Power
Amp.
+
16
2
10
11
13
NC
DC
MUTE
VCC2
ADJ
LED DRIVING
LVDD
La ~ Lg, Lp
LD0 ~ LD7
CPU
LSI14
HD6433294A19F
Q15 ~ Q18
LED Driver
IC301
BA612
LED Driver
IC17
UPD65611GB-019-3BA
P40
KO0 ~ KO3, KO5
P41
KO Signal Generator
LG
RESET CIRCUIT
When batteries are set or an AC adapter is connected, the reset IC provides a low pulse to the CPU. The CPU
then initializes its internal circuit and clears the working storage RAM.
When the power switch is pressed, the CPU receives a low pulse of POWER signal. The CPU provides APO
signal to the power supply circuit and raises RESET signal to +5 V to reset the DSP, the key controller and
the KO signal generator.
VDD
DVDD
DVDD
Battery set
VDD
KO Signal Generator
LSI17
DSP
LSI11
RESET
UPD65611GB-019-3BA
HG51B155FD-1
CPU
LSI14
HD6433294A19F
Reset IC
IC13
RH5VL36AA
-RESET
VDD
DVDD
POWER
From power switch
APO
To power supply circuit
-NMI
P42
Key Controller
LSI16
HG52E35P
Working Storage RAM
LSI15
TC55257DFL-70L
— 12 —
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MAJOR WAVEFORMS
A . 1 s
A . 200 ms
A 1 µs
A 1 µs
1
2
B
3
CH1
CH2
CH1
CH2
CH1
CH1
CH2
E
F
4
5
CH2
CH3
C
D
CH3
˜
˜
CH1: 5 V CH2: 5 V
CH1: 5 V CH2: 5 V
CH1: 5 V CH2: 5 V CH3: 5 V
CH1: 20 mV
CH2: 20 mV
1 Voltage VDD
3 Power ON signal PSW
B Word clock WOK1
E Filter output AOR
JG connector pin 8
HD6433294A19F pin 5
UPD6376GS pin 13
JH connector pin 2
2 Initial reset signal
4 APO signal
C Data S1 (Note OFF)
F Filter output AOL
RH5VL36A pin 1
HD6433294A19F pin 59
UPD6376GS pin 15
JH connector pin 1
5 Reset signal
D Bit clock BOK
HD6433294A19F pin 3
UPD6376GS pin 16
Tone:
Key:
Whistle (No. 078)
A4
Touch response: OFF
A . 20 µs
A . 10 ms
CH1
9
6
7
CH1
CH2
CH3
0
A
CH2
CH3
8
CH1: 5 V CH2: 5 V CH3: 5 V
CH1: 5 V CH2: 5 V CH3: 5 V
6 Key scan signal KC0
9 Button scan signal KO0
HG52E35P pin 44
JE connector pin 6
7 Key scan signal KC1
0 Button scan signal KO1
HG52E35P pin 45
JE connector pin 7
8 Key scan signal KC2
A Button scan signal KO2
HG52E35P pin 46
JE connector pin 9
— 13 —
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PRINTED CIRCUIT BOARDS
4
MAIN PCB JCM717-MA1M
C80
C146
R124
R123
C20
C21
C22
C23
C24
C30
C29
C26
Q12
R11
R122
R121
R120
R119
R118
R117
R116
R115
R114
R113
R112
R111
R85
R86
R87
R88
R89
R90
C99
R91
R96 C103
R95
LSI11
C81
C98
Q11
C14
6
7
8
C141
C142
C76
C16
C15
C25
C27
C28
C31
C32
C33
C77
FB51
R69
C71
C73 R68
C153
C152
FB52
EF2
R110
R109
R108
R107
R106
R105
R104
R103
R102
R101
R100
R99
C87
5
3
MR17
MR16
C143
C54
LSI15
Q14
Q13
IC12
LSI14
R94 C102
C101
D12
D11
R92
C37
R93
FB54
R71
C84
C85
C94
R98
R97
C133
Top view
11 10
9
2
NO.JE16
C104
C105
C106
C107
C108
C109
C110
C111
C112
C113
C114
C115
C116
C117
1
1
JF15
EF1
C36
X12
MR14
R40
R39
R38
R37
R36
R35
R34
R33
R32
R31
C97
R70
MR12
LSI17
FB25
FB24
IC13
@
MR11
C95
C118
C119
C120
C121
C122
C123
C124
C125
C126
C127
C128
C129
C130
C131
FB23
FB20
FB19
FB17
FB16
FB18
FB21
FB22
FB15
FB14
FB13
FB12
FB11
X11
C82
1
C145
C79
R25
R24
R23
LSI16
R22 R21
LSI13
LC11
LSI12
JCM717-MA1M B
12 13 14
Bottom view
— 14 —
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SCHEMATIC DIAGRAMS
MAIN PCB JCM717-MA1M
14
13
12
4
1
5
3
6
7
8
2
9
11
10
— 15 —
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SUB PCB KDM717-MA2M
15
16
— 16 —
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CONSOLE PCBs KDM717-CN1M/CN2/CN3/CN4
— 17 —
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KEYBOARD PCBs JCM762T-KY1M/KY2M/KY3
— 18 —
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EXPLODED VIEW
31
30
19
29
26
R-1
24
26
28
21
22
26
20
6
23
18
4
27
26
25
26
17
3
4
8
7
31
16
4
12
10
9
R-2
1
11
2
15
13
5
14
32
R-3
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PARTS LIST
WK-1500
Notes: 1. Prices and specifications are subject to change with-
out prior notice.
2. As for spare parts order and supply, refer to the
"GUIDEBOOK for Spare parts Supply", published
seperately.
3. The numbers in item column correspond to the same
numbers in drawing.
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Item
Code No.
Main PCB
Parts Name
Specification
Q
R
1
LSI2
LSI3
6925 3130 Main PCB ass'y, M717-MA1M
2012 4536 LSI, ROM
2012 0777 LSI, RAM
2012 4298 LSI,
2012 1316 LSI, DSP
2012 4550 LSI, CPU
2012 4291 LSI, RAM
2011 5194 LSI, Key controller
2114 4221 IC
M140443*1
1 B
1 A
1 A
1 A
1 A
1 A
1 A
1 A
1 A
MX23C2410MC-12CA51
LC33832M-70-TLM
UPD65611GB-019-3BA
HG51B155FD-1
HD6433294A19F
HM62256BLFP-7T
HG52E35P
UPD6376GS-E1
TC7S08F-TE85R
RH5VL36AA-T1
2SC4081-T106S
2SA1576AT106S
UMS1NTL
LSI7
LSI11
LSI14
LSI15
LSI16
IC11
IC12
IC13
2105 1120 IC
2105 4536 IC
A
A
1
1
Q11, Q12
Q13, Q14
Q15 - Q18
D11, D12
D13
2252 1169 Transistor, Chip
2250 1169 Transistor, Chip
2259 2562 Transistor, Chip
2390 1820 Diode, Chip
2390 2576 Diode, Chip
2590 2107 Oscillator, Crystal
2590 2079 Oscillator, Ceramic
Sub PCB ass'y
2 B
2 B
4 B
1SS355TE-17
RB501V-40TE-17
HC-49S24A
C
C
B
B
2
1
1
1
X11
X12
CSACS16.00MX040-TC
6925 3150 Sub PCB ass'y M717-MA2M
2114 1883 IC
2114 1799 IC
M140445*1
LA4620
M5218APR
PC900V
2SA933-SQ-TP-T
2SB1237Q,R-TV6-T
2SC1740SQ-TP-T
2SB1548-P.CS
2SD1762E,F
B
A
A
2
1
1
2
IC201
IC202, IC203
IC204
Q201
Q202, Q204
2114 1421 IC
1 B
1 A
Transistor
2200 4409
2251 0469 Transistor
2220 1387 Transistor
A
2
5 A
1 A
1 A
1 B
3 B
5 C
1 B
1 B
1 B
Transistor
Transistor
Diode, Schottky
Diode
Diode
Diode, Zener
Q207
Q208
D201
2251 0672
2253 0455
2390 1463
2390 0371
2390 1344
2360 1085
SB20-03B
D202 - D204
DSK10B-BT-T
1SS133T-77-T
HZS6B1LTD-T
RD5.1JSB3-T1-T
RD5.6ESB3-T1-T
RD5.1ESB1-T1-T
RB100A-T32-T
HEC2305-01-920
YKB21-5006
D207
D209
D211
D213
D214
J201
J202
J203
J204
2360 2261 Diode, Zener
2310 7775 Diode, Zener
2360 1134 Diode, Zener
2390 1323 Diode
3501 5012 Jack, Power
3612 0665 Jack, Phone
3612 0789 Jack
B
B
A
B
B
B
1
1
1
1
1
1
YKB21-5010
YKFB1-5051
3501 4816 Jack, DIN
Console PCBs
3
6925 3190 PCB ass'y M717-CN1M
2114 3318 IC
2220 1387 Transistor
2390 1344 Diode
2370 0952 LED, 7-segment
2370 0343 LED
2370 1197 LED
M140444*1
BA612
B
B
B
C
B
C
C
1
1
4
64
1
IC301
Q301 - Q304
D301 - D364
LED301
2SC1740SQ-TP-T
1SS133T-77-T
LB-603VP1
LN28RPX-(TT)
MVR3378S-B102
M240469*1
23
1
LED305
4
6925 3180 PCB ass'y M717-CN2,3,4
1 B
5 C
1 B
LN28RPX-(TT)
EWAMJ0C15B23
LED401 - LED405 2370 0343 LED
VR501
2765 2128 Volume
Keyboard PCBs
B
C
5
6923 7630 Keyboard PCB ass'y
2390 0252 Diode
M140251*2
1S2473T-77-T
1
152
D501 - D652
Notes: Q – Quantity per unit
R – Rank
— 21 —
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Item
Code No.
Parts Name
Specification
RK1631110-50KB
Q
R
B
C
2765 1141 Volume
6925 3570 Knob, Bender
Keyboard unit
1
1
6
M31488-3
7
8
9
6922 2720 White key set, LT
M312118*1
M340231*1
M340230*1
M111726-1
M111726-3
M111726-4
M211704-1
M240181-1
M240182-1
M240455-1
M240454-1
M240453-1
A
A
1 A
5
1
6923 7900 White key set, LT76R
6923 7910 White key set, LT76L
6922 2740 Black key set, LT10P
6923 7930 Black key set, LT-76-3P
6923 7940 Black key set, LT-79-8P
6922 2760 Key contact rubber, LT-CB
6923 7970 Key contact rubber, LT-EB
10
11
12
13
14
15
16
17
18
A
A
A
A
A
A
C
C
C
2
1
1
5
1
1
1
2
1
6923 8000
6925 3540
Key contact rubber, LT-CG
Gasket, 717L
6925 3550 Gasket, 717C
6925 3560
Panel unit
6925 3350
6925 3360
6925 3370
6925 3380
6925 2510
Gasket, 717R
19
20
21
22
23
24
25
26
27
28
29
30
31
M240452-1
M340497-1
M340498-1
M340499-1
M312081-4
M312088-1
M312122-2
M312123-2
M211727-4
M312131-2
M311859-1
M340500-1
12G30BFB
B
B
B
B
B
B
B
B
B
B
B
C
B
Button, Rubber
Button, Rubber
Button, Rubber
Button, Rubber
Button, Rubber
2
1
1
1
1
1
1
7
1
1
1
1
2
6922 2660 Button, Rubber
6923 4980
6923 4990
6925 3390
6925 3400
6921 5030
6925 3330
Button, Rubber
Button, Rubber
Button, Rubber
Button, Rubber
Knob, Slide
Plate, Display
3831 0672 Speaker
Others
6925 4120 Cover, Battery
6925 3310 Music stand
M311164*10
M340523*1
32
1 B
1 B
Notes: Q – Quantity per unit
R – Rank
— 22 —
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MA0900761A
Sep, 1996
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