Casio SK-60 Bedienungsanleitung
ELECTRIONIC KEYBOARD
SK-60
SK-60
MELODY
ON/OFF
TIME
SML
1-2-3
1-2-3-4
1-2
CYCLE
REVERSE CLEAR
RELEASE
EFFECT
LOOP
TUNE
RESET
36
TONES
12 FREE SESSIONS
11
12
13
14
15
16
21
22
23
24
25
26
31
52
53
54
55
56
61
62
63
64
65
66
32
33
34
35
36
41
42
43
44
45
46
51
@
11
12
13
14
15
16
21
22
23
24
25
26
31
32
33
34
35
36
41
42
43
44
45
46
51
52
53
54
55
56
61
62
63
64
65
66
POPS 1
BIG BAND
SWING
FOX TROT
POPS 2
WALTZ 1
WALTZ 2
POLKA
SKA
TEX-MEX
COUNTRY
BAROQUE
MARY HAD A LITTLE LAMB
AMAZING GRACE
ACH DU LIEBER AUGUSTIN
LONDON BRIDGE
JOY TO THE WORLD
GREENSLEEVES
JINGLE BELLS
SILENT NIGHT
O CHRISTMAS TREE
YANKEE DOODLE
SANTA LUCIA
MARCH FROM “THE NUTCRACKER”
VOICES OF REASON (ORIGINAL SONG)
TWINKLE TWINKLE LITTLE STAR
DOOIN’ MY THING (ORIGINAL SONG)
ODE TO JOY
LITTLE BROWN JUG
SPRING FROM “THE FOUR SEASONS”
WHEN THE SAINTS GO MARCHING IN
FRÈRE JACQUES
OLD MacDONALD HAD A FARM
AULD LANG SYNE
LONDONDERRY AIR
ROW, ROW, ROW YOUR BOAT
DOO1 (MALE)
DOO2 (MALE)
BAH (BASS)
BOM (BASS)
VOICE PERCUSSION
DOO-BEE
BOM-BAH
DOO-BEE-DEE
DOO-BEE-BAH
DOO-BEE-DEE-BAH
DOO-BEE-DOO-BAH
SIREN 2
TELEPHONE
SPACE 1
SPACE 2
FUNNY
DOO (FEMALE)
BEE (FEMALE)
DEE (FEMALE)
BAH (FEMALE)
AHH (CHOIR)
OOH (CHOIR)
LA (CHILDREN)
PIANO
ELEC PIANO
ORGAN
ACCORDION
GUITAR
VIBRAPHONE
VIOLIN
STRINGS
TRUMPET
CLARINET
SAX
FLUTE
SIREN 1
HUMAN VOICE HUMAN VOICE
(CYCLE)
36
SONG BANK
24
SONGS
POWER
ON
OFF
VOLUME TEMPO TONE
SONG BANK
START/
STOP MAGICAL
SINGER
PAD
EFFECT SAMPLE
EDIT SAMPLING
PAD
A
C
B
D
S
A
M
P
L
I
N
G
M
I
C
123
456
12
34
— 2 —
CONTENTS
Specifications .......................................................................................................................... 2
Block Diagram......................................................................................................................... 3
Circuit Description ................................................................................................................... 4
Major Waveforms .................................................................................................................... 7
Printed Circuit Board ...............................................................................................................8
Schematic Diagrams ............................................................................................................... 9
Exploded View ...................................................................................................................... 11
Parts List ............................................................................................................................... 13
SPECIFICATIONS
GENERAL
Number of keys: 32
Polyphonic: 12-note
Preset tones: 18
Human voice tones: 12
Voice cycles: 6
Song bank: 24-tune
Free sessions: 12
Pads: 4
Pad settings: Sampled sounds, effects, voice percussion
Sampling method: 8-bit Differential Pulse Coded Modulation (DPCM)
Sampling rate: 13,021 kHz
Sampling duration: 2.4 seconds maximum
Tuning control: Approx. 440 Hz
Built-in speakers: 4 inch dia. 2 W input rating: 2 pcs
Terminals: 7.5 V DC
Power source: 2-way AC or DC source
AC: AC adapter
DC: 5 AA size dry batteries
Power consumption: 2.0 W
Dimensions(HWD): 416 ×222 ×530 mm (16-3/8 ×8-6/8 ×20-7/8 inches)
Weight: 1.0 kg (2.2 lbs) excluding batteries
ELECTRICAL
Current drain with 7.5 V DC:
No sound output 50 mA ±20%
Maximum volume 200 mA ±20%
with white keys F4 to C6 pressed in Bah tone (No. 44)
Power off 80 µA (maximum)
Speaker output level (Vrms with 4 Ωload):
with key C4 pressed in Accordion tone 480 mV ±20%
Volume: maximum
Minimum operating voltage 5.8 V
— 3 —
CPU
LSI1
MSM6755B-10 Keyboard
Buttons
PG
Q1, X1
Reset IC
IC1
RE5VL40AA
Q103
Voltage Regulator
Q101, Q102, D102
Mic. Amp.
Q105, Q106
Mic. input
VCC
DVDD
AVDD
Power Supply Circuit
APO
MD0 ~ MD7 MA0 ~ MA14
RAM (256 Kbit)
LSI2
HM62256BLSP-8
KI0 ~ KI3
KO0 ~ KO7
KI4 ~ KI7
Amp./Voltage Regulator
IC101
AN8053N
BLOCK DIAGRAM
— 4 —
KI0 KI1 KI2 KI3 KI4 KI5 KI6 KI7
KO0 (SO0) F3 C#4 A4 F5 A 1 1 Song
KO1 (SO1) F#3 D4 A#4 F#5 B 2 2 Start/
Stop
KO2 (SO2) G3 D#4 B4 G5 C 3 3 Melody
On/Off
KO3 (SO3) G#3 E4 C5 G#5 D 4 4 Tone
KO4 (SO4) A3 F4 C#5 A5 Volume
Up Magical
Singer 5
KO5 (SO5) A#3 F#4 D5 A#5 Volume
Down Sampling 6
KO6 (SO6) B3 G4 D#5 B5 Tempo
Up Edit Effect
KO7 (SO7) C4 G#4 E5 C6 Tempo
Down
CIRCUIT DESCRIPTION
KEY MATRIX
NOMENCLATURE OF KEYS
F3 G3 A3 B3 C4 D4 E4 F4 G4 A4 B4 C5 D5 E5 F5 G5 A5 B5 C6
F#3 G#3 A#3 C#4 D#4 F#4 G#4 A#4 C#5 D#5 F#5 G#5 A#5
— 5 —
Pin No. Terminal In/Out Function
1 MA14 Out Address bus
2 MWEB Out Write enable signal output
3 NC0 — Not used.
4 ~ 19 MA0 ~ MA13 Out Address bus
13 MRDB Out Read enable signal output
17 MCSB Out Chip select signal for the RAM
20 ~ 27 MD0 ~ MD7 In/Out Data bus
28, 29 NC1, NC2 — Not used.
30 DGND In Ground source
31 DVCC In +5 V source
32, 33 XTL0, XTL1 In/Out 20 MHz clock input/output
34 NC3 — Not used.
35 RSTB In Reset signal input
36 RXD — Not used. Connected to +5 V.
37 TXD — Not used.
38 NMI In Power ON signal input
39 APO Out APO(Auto Power Off) signal output
40 NC4 — Not used.
41 REFH Out Terminal for the built-in DAC/ADC
42, 43 NC5, NC6 — Not used.
44 DAOR Out Sound waveform output
45 NC7 — Not used.
46 AVdac In +5 V source for the built-in DAC/ADC
47 DAOL — Not used.
48 REFL Out Terminal for the built-in DAC/ADC
49 AGdac — Not used.
50 AGadc In Ground source for the built-in ADC
51 ANI In Analog signal input
52 AVadc In +5 V source for the built-in ADC
53 NC8 — Not used.
54 MOD0 In Mode selection terminal
55, 56 MOD1, MOD2 In Mode selection terminal
57 P40 In APO cancellation signal input
58 ~ 65 KI0 ~ KI7 In Terminals for key/button input signal
66 ~ 73 KO1 ~ KO8 Out Terminals for key scan signal
74 ~ 78 — — Not used.
79 LVCC In +5 V source
80 ~ 95 — — Not used.
96 LGND In Ground source
97 ~ 100 — — Not used.
CPU (LSI1: MSM6755B-10)
Containing a sound data ROM and a DAC (Digital to Analog Convertor), the CPU provides sound waveform
in accordance with the pressed key and the selected tone. The CPU also records the voice picked up the
microphone, using the built-in ADC (Analog to Digital Convertor) and the RAM.
The following table shows the pin functions of LSI1.
— 6 —
Oscillator
20 MHz
CPU
APO
DVDD
DVDD
From power switch
SWITCH: OFF ON
+5 V +5 V0 V
APO: "L" "H"
+7.5 V 0 V
AMPLIFIER/VOLTAGE REGULATOR (IC101: AN8053N)
The right figure shows the internal block of IC 101.
16 9
SP AMP
–
+VREF
5V REG
POWER
13456782
15 14 13 12 11 10
VCC NC CONT 5 V
VREG NC NC NC PRE GND
SPO NC SP GND PC-1 PC-2 SPI SPM VREF
POWER SUPPLY CIRCUIT
The power supply circuit generates two voltages DVDD (+5 V) and AVDD (+5 V). DVDD (+5 V) is always
generated but AVDD (+5 V) is controlled by APO signal output from the CPU.
OSCILLATOR
+5 V source of the oscillator is controlled by transistor Q107. When selecting the power switch at on position,
transistor Q107 turns on to become 20 MHz oscillation on. To keep the oscillation on, the CPU provides "H"
of APO signal.
— 7 —
MAJOR WAVEFORMS
1Clock pulse
MSM6755B-10 pin 32 2Key scan signal KO6
MSM6755B-10 pin 72
3Key scan signal KO7
MSM6755B-10 pin 73
12
3
4Sound waveform
MSM6755B-10 pin 44 5Mic. amp. input
Terminal PM-BL
6Mic. amp. output
MSM6755B-10 pin 51
4
5
6
Tone: No. 22
Key: A4
— 8 —
2 1 4 63 5
PRINTED CIRCUIT BOARD
Main PCB KDM415-MA1M
— 9 —
1
2
3
4
5
6
SCHEMATIC DIAGRAMS
Main PCB KDM415-MA1M/KY2M
— 10 —
Keyboard PCB KDM415-KY1M
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