CTK-220L
100 TONES
25 RHYTHMS
20 SONG BANK
POWER/MODE
VOLUME SYNCHRO/ START/
TEMPO
¢
SONG
BANK
¢
0
5
1
6
2
7
3
8
4
9
TONE
FILL-IN
STOP
STEP
1
STEP
2
STEP
3
DEMO
MULTI FUNCTION DISPLAY
20 SONG BANK KEYBOARD
FINGERED
CASIO CHORD
NORMAL
ON
OFF
¢
¢
RHYTHM PART
SELECT
TONE RHYTHM SONG BANK
TRANSPOSE/TUNE
CTK-220L
ELECTRONIC KEYBOARD
Download from Www.Somanuals.com. All Manuals Search And Download.
SPECIFICATIONS
GENERAL
Number of keys:
Polyphonic:
49
12-note
100
Preset tones:
Transpose:
F# ~ C ~ F: half-note
Auto-rhythms:
Accompaniment:
Song bank:
25, Tempo: Adjustable, 216 steps (40 ~ 255), initial value: 120
CASIO Chord, Fingered, Fill-in pattern, Synchro start
20-tune
Digital volume control:
Tuning control:
Built-in speakers:
Terminals:
10 steps (0 ~ 9), initial value: 7
440 Hz ± 50 cents
10 cm dia. × 1 (Output: 2 W)
Headphone Jack, Stereo mini Jack [Output impedance: 70 ⏲, Output voltage:
3.6 V (rms) MAX]
Auto power off:
Power source:
Approximately 6 minutes after the last operation
2-way AC or DC source
AC: Required optional AD-5 AC adaptor
DC: 6 AA size batteries
Power consumption:
Dimensions (HWD):
Weight:
7.7 W
85 × 771 × 324 mm (3-3/8 × 30-3/8 × 12-3/4 inches)
3.4 kg (7.5 lbs) excluding batteries
ELECTRICAL
Current drain with 9 V DC:
No sound output
160 mA ± 20 %
840 mA ± 20 %
Maximum volume
with white keys C1 to G2 pressed in Synth-Lead 1
Volume: Maximum
Phone output level (Vrms with 8 ohm load):
with key C2 pressed in Synth-Lead 1
98 mV ± 20 %
Speaker output level (Vrms with 4 ohm load):
with key F4 pressed in Synth-Lead 1
2000 mV ± 20 %
Minimum operating voltage:
6.3 V
— 1 —
Download from Www.Somanuals.com. All Manuals Search And Download.
BLOCK DIAGRAM
7 seg. LED
LED Latch
IC2, IC3
MD0 ~ MD7
Phone/Output
KO8 ~ KO11
Buttons
Amp.
IC301
LA4598
Filter
Q305
CPU
KI0 ~ KI7
LSI1
KO0 ~ KO7
MSM 6755B-13
Illuminant
Keyboard
LX0 ~
LED Driver
Power Supply Circuit
Q301 ~ Q304
APO
LX7
DC+9 V IN
Q5 ~ Q8
D334, D336
LY1 ~
LY7
LED Driver
Q1 ~ Q4
Reset IC
IC1
PG
X1, Q11
Download from Www.Somanuals.com. All Manuals Search And Download.
CIRCUIT DESCRIPTION
KEY MATRIX
KI0
KI1
C2
KI2
G#2
A2
KI3
E3
KI4
C4
KI5
G#4
A4
KI6
E5
KI7
KO0
KO1
KO2
KO3
KO4
KO5
KO6
KO7
C6
C#2
D2
F3
C#4
D4
F5
A#2
B2
F#3
G3
A#4
B4
F#5
G5
D#2
E2
D#4
E4
C3
G#3
A3
C5
G#5
A5
F2
C#3
D3
F4
C#5
D5
F#2
G2
A#3
B3
F#4
G4
A#5
B5
D#3
D#5
Start/
Stop
Volume
Down
KO8
KO9
K10
K11
0
5
1
2
7
3
8
4
9
Up
Volume
Down
Synchro/
Fill-In
6
Down
Song
Bank
Part
Select
Tone
Step-1
Rhythm
Step-2
One Key One Key
Demo
Off
Casio
Fingered
Step-3
Normal
Chord
LED MATRIX
LX0
LX1
D3
E3
F3
LX2
C3
B2
A2
G2
D5
E5
F5
LX3
C2
D2
E2
F2
LX4
G#2
A#2
D#4
C#5
D#5
C6
LX5
F#2
C#3
C#4
A#4
F#5
LX6
D#2
D#3
A#3
G#4
G#5
LX7
C#2
F#3
G#3
F#4
A#5
LY1
LY2
LY3
LY4
LY5
LY6
LY7
D4
C4
B3
A3
E4
F4
G4
G3
C5
B4
A4
B5
A5
G5
NOMENCLATURE OF KEYS
C#2 D#2
F#2 G#2 A#2
C#3 D#3
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
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
— 3 —
Download from Www.Somanuals.com. All Manuals Search And Download.
CPU (LSI1: MSM6755B-13)
The CPU contains a sound data ROM and a DAC (Digital to Analog Convertor), and it provides a sound
waveform in accordance with the pressed key and the selected tone. The CPU also controls key input, button
input and LED driving. The following table shows the pin functions of LSI1.
Pin No.
1
Terminal
MA14
In/Out
—
Function
Not used.
2
MWEB
Out
—
Clock for LED latches
3 ~ 5
6
—
Not used.
MA0
Out
—
7-seg. LED drive signal
Not used.
7 ~ 19
20 ~ 27
28, 29
30
MA1 ~ MA11
MD0 ~ MD7
NC1, NC2
DGND
Out
—
7-seg. LED drive signal
Not used.
In
Ground (0 V) source
31
DVCC
In
+5 V source
32, 33
34
XTLO, XTLI
NC3
In/Out
—
20 MHz clock input/output
Not used.
35
RSTB
In
Reset signal input
36
P24/RXD
P25/TXD
NMI
—
Not used. Connected to +5 V.
Not used.
37
—
38
In
Power ON signal input. Connected to +5 V.
APO (Auto Power Off) signal output
Not used.
39
APO
Out
—
40
NC4
41
REFH
Out
—
Terminal for the internal DAC
Not used.
42, 43
44
NC5, NC6
DAOR
Out
—
Right channel sound waveform output
Not used.
45
NC7
46
AVdac
In
+5 V source for the internal DAC and ADC
Left channel sound waveform output
Terminal for the internal DAC and ADC
Ground source for the internal DAC
Ground source for the internal ADC
Not used. Connected to ground.
+5 V source for the internal ADC
Not used.
47
DAOL
Out
Out
In
48
REFL
49
AGdac
50
AGadc
In
51
ANI
—
52
AVadc
In
53
NC8
—
54
MOD0
In
Mode selection terminal. Connected to +5 V.
Mode selection terminal. Connected to ground.
APO cancellation signal
Terminals for key/button input signal
Terminals for key scan signal
Terminals for button input signal
Not used.
55, 56
57
MOD1, MOD2
P40
In
In
58 ~ 65
66 ~ 73
74 ~ 77
78
KI0/P30 ~ KI7/P37
KO0/P50 ~ KO7/P57
KO8/P20 ~ KO11/P23
NC9
In
Out
Out
—
79
LVCC
In
+5 V source
80 ~ 95
96
LX0 ~ LX7, LY0 ~ LY7
LGND
Out
In
LED drive signal
Ground source
97 ~ 100
MA18 ~ MA15
—
Not used.
— 4 —
Download from Www.Somanuals.com. All Manuals Search And Download.
FILTER BLOCK
Since the sound signal from the CPU is a stepped waveform, the filter block is added to smooth the waveform.
Amp.
IC301
Filter Block
Q305
CPU
LSI1
POWER AMPLIFIER (IC301: LA4598)
The power amplifier is a two-channel amplifier with standby switch.
The following table shows the pin function of IC301.
Pin No.
Terminal
Power GND
Ch1 B.S.
Ch1 OUT
VCC
In/Out
In
Function
1
2
Ground (0V) source
—
Terminal for a bootstrap capacitor
Channel 1 output
3
Out
In
4
+9V source
5
Ch1 N.F.
Ch1 IN
In
Negative feedback input
Channel 1 input
6
In
7
D.C.
—
Terminal for a decoupling capacitor
Ground (0V) source
8
Pre GND
Stand by
Ch2 IN
In
9
In
Power control signal input. 0 V: Off, +9 V: On
Channel 2 input
10
11
12
13
14
In
Ch2 N.F.
Ch2 OUT
Ch2 B.S.
NC
In
Negative feedback input
Channel 2 output
Out
—
Terminal for a bootstrap capacitor
Not used
—
LED DRIVING
7-segment LED
Keyboard LEDs
LVDD
LED
Latch
IC3
La ~ Lg
LX0 ~ LX7
Q5 ~ Q8
MD0 ~ MD3
MWEB
CPU
LSI1
(Segment)
MSM6755B-13
LED
Latch
IC2
LY1 ~ LY7
MD4 ~ MD7
MA0
Q1 ~ Q4
Q2 ~ Q4
(Common)
LG
— 5 —
Download from Www.Somanuals.com. All Manuals Search And Download.
MAJOR WAVEFORMS
1
2
3
1 APO signal
3 Clock
MSM6755B-13 pin 39
MSM6755B-13 pin 32
2 Reset signal
RH5VL40AA pin 1
5
6
4
4 Sound signal
5 LED drive signal LX0
JH connector pin 2
MSM6755B-13 pin 88
6 LED drive signal LY1
MSM6755B-13 pin 81
Tone: Whistle (59)
Key : A4
Key: D4
— 6 —
Download from Www.Somanuals.com. All Manuals Search And Download.
PRINTED CIRCUIT BOARDS
Sub PCB KDM445-MA2M
J301
J302
R
R
C356
C355
C373
Q312 R366
B
5
R371
R372
E
C368
R374
Q310
5
D331
C339
B
E
5
5
5
R309
R310
R348
R343
C372
125
100
100
JA5
JA4
E
B
JA3
C359
C337
5
C364
D333
VC
5
VCC
AVDD
GR
GR
PS
0
75
75
75
5
DVDD
5
R327
5
R320
D332
R324
5
0
LVDD
R318
R302
Top view
1
5
4
6
3
2
Main PCB JCM446-MA1M
Bottom view
Top view
— 7 —
Download from Www.Somanuals.com. All Manuals Search And Download.
SCHEMATIC DIAGRAMS
Main PCB JCM446-MA1M
2
3
1
5
4
Note: KI signals are renamed. (e.g. KI0 on the keyboard PCB ⇒ KI1 on the main PCB)
7
6
— 8 —
Download from Www.Somanuals.com. All Manuals Search And Download.
Sub PCBs KDM445-MA2M/MA3M
— 9 —
Download from Www.Somanuals.com. All Manuals Search And Download.
Keyboard PCBs KDM4910K-KY1M/KY2M
— 10 —
Download from Www.Somanuals.com. All Manuals Search And Download.
LED PCB KDM446-LD1M
— 11 —
Download from Www.Somanuals.com. All Manuals Search And Download.
LED PCB KDM445-LD2M
PCB NAME
— 12 —
Download from Www.Somanuals.com. All Manuals Search And Download.
LED PCB KDM446-LD3M
PCB NAME
LED PCB KDM445-LD4M
PCB NAME
— 13 —
Download from Www.Somanuals.com. All Manuals Search And Download.
EXPLODED VIEW
16
15
6
5
9
17
7
8
R-1
R-2
12
19
11
13
14
18
10
1
2
3
4
R-3
R-4
— 14 —
Download from Www.Somanuals.com. All Manuals Search And Download.
PARTS LIST
CTK-220L
Notes: This parts list does not include the cosmetic parts, which
parts are marked with item No. "R-X" in the exploded
view.
Contact our spare parts department if you need these
parts for refurbish.
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.
Download from Www.Somanuals.com. All Manuals Search And Download.
Item
Code No.
Main PCB
Parts Name
Specification
Q
R
1
LSI1
IC1
IC2
IC3
Q1 - Q4
Q5 - Q8
Q9
Q10
Q11
D1
6925 6160 Main PCB ass'y (MA1M)
2012 4690 LSI, CPU
2105 5922 IC
2105 4452 IC
2105 5796 IC
2259 2555 Transistor, Chip, Digital
2259 2562 Transistor, Chip, Digital
2259 2646 Transistor, Chip, Digital
2259 2548 Transistor, Chip, Digital
2252 1239 Transistor, Chip
2390 2576 Diode, Chip, Schottky
2390 1820 Diode, Chip
2590 1526 Oscillator, Ceramic
2370 1141 LED, 7-seg.
Sub PCB ass'y
M240438*3
MSM6755B-13
RH5VL40AA-T1
HD74HC174FPTR
HD74HC4511FPTR
UMW1NTL
1 B
1 A
1 A
1 A
1 A
4 A
4 A
1 A
UMS1NTL
UMH3NTN
DTC143EUAT106
2SC4081-T106Q
RB501V-40TE-17
1SS355TE-17
EFO-EN2005C4
SL-9352-60
A
A
1
1
1 B
1 B
1 B
D3
X1
LED1
B
1
6925 6173 Sub PCB ass'y
2114 2891 IC
2250 0742 Transistor
2220 1409 Transistor
2253 0581 Transistor
M140476*2
LA4598
2SA1703S,T-AN-T
2SC1740SR-TP-T
2SD1858R,S-TV6-T
2SD1762E.F
B
A
A
A
2
IC301
Q301
1
1
1
2
Q302, Q305
Q303
1 A
1 A
Transistor
2253 0455
Q304
2390 1344 Diode
2360 1729 Diode, Zener
1SS133T-77-T
MTZJ5.1A-T77-T
1SR139-100T-32-T
RB100A-T32-T
MTZJ5.6B-T77-T
MPR3338S-B99
HEC2305-01-330
HSJ2000-01-010
B
31
D304
D331
D333
1 B
1 B
1 B
2 B
1 B
1 B
1 B
Diode
Diode
2390 0378
2390 1323
Diode, Zener
LED
Jack, Power
Jack, Phone
D334, D336 2360 2002
LED301
J301
J302
2370 1106
3501 7049
3501 4382
Keyboard PCBs
B
B
2301 0101 Diode
6925 6180 Keyboard PCB ass'y
LED PCBs
2370 1323 LED (for white key)
6925 6183 LED PCB ass'y LD1,2M
2370 1330 LED (for black key)
6925 1340 LED PCB ass'y LD3M
6925 6184 LED PCB ass'y LD4M
Mechanical Parts
1S2473T-77-T
M140449*2
49
1
3
4
B
C
B
C
C
KR3301X-J344K
M140473*1
KR3302X-J345K
M240428*1
29
1
20
1
5
6
M240500*1
1
7
8
9
6925 2160 Battery cover
6925 6261 Slide knob
6925 5380 Display plate
6909 5890 Slide contact
3831 1072 Speaker
M340490*1
M311859A-6
M340534-2
CSB-12D
S10JA49A
M240374-3
M240414-2
M240413-2
M340489*1
M340489*2
M140369-1
M240025-1
M111765-1
B
B
1 C
1
1
10
11
12
13
14
15
16
17
18
19
B
B
B
B
B
A
A
A
A
A
1
1
1
1
1
3
1
2
1
1
6925 6370 Rubber button
6906 8371 Rubber button
Rubber button
White key set, LSK-CB
White key set, LSK-CS
6925 6300
6925 1700
6925 1710
6925 1720 Black key set, LSK-10P
6923 2390
6922 4000
Other
Key contact rubber, 18
Key contact rubber, 31
6916 7880 Music stand
M310827-1
1 C
— 15 —
Download from Www.Somanuals.com. All Manuals Search And Download.
Nov, 1996
MA1100761A
Download from Www.Somanuals.com. All Manuals Search And Download.
|