Casio CTK-330 User manual

POWER/MODE
FINGERED
CASIO CHORD
NORMAL
OFF
ON
VOLUME SYNCHRO/
FILL-IN START/ STOP TEMPO
TRANSPOSE/
TUNE
PIANO
00 PIANO 1
01 PIANO 2
02 HONKY-TONK
03 STUDIO PIANO
04 ELEC PIANO 1
05 ELEC PIANO 2
06 ELEC PIANO 3
07 ELEC PIANO 4
08 HARPSICHORD
09 CLAVELECTRO
100 TONES
ORGAN
10 ELEC ORGAN 1
11 ELEC ORGAN 2
12 ELEC ORGAN 3
13 ELEC ORGAN 4
14 CHURCH ORGAN
15 PIPE ORGAN
16 REED ORGAN
17 ACCORDION
18 BANDONEON
19 HARMONICA
GUITAR/BASS
20 GUT GUITAR
21 ACOUS GUITAR
22 JAZZ GUITAR
23 ELEC GUITAR
24 MUTE GUITAR
25 DIST GUITAR
26 WOOD BASS
27 ELEC BASS
28 SLAP BASS
29 BANJO
STRINGS/ENSEMBLE
30 VIOLIN
31 CELLO
32 HARP
33 STRINGS 1
34 STRINGS 2
35 STRINGS 3
36 SYNTH-STR 1
37 SYNTH-STR 2
38 CHIOR
39 VOICE
BRASS
40 TRUMPET
41 TUBA
42 BRASS SECTION
43 FRENCH HORN 1
44 FRENCH HORN 2
45 BRASS 1
46 BRASS 2
47 SYNTH-BRASS 1
48 SYNTH-BRASS 2
49 SYNTH-BRASS 3
REED/PIPE
50 SOPRANO SAX
51 ALTO SAX
52 TENOR SAX
53 OBOE
54 CLARINET
55 PICCORO
56 FLUTE
57 RECORDER
58 FLUTE ENSEMBLE
59 WHISTLE
SYNTH-SOUND 1
60 SYNTH-LEAD 1
61 SYNTH-LEAD 2
62 SYNTH-LEAD 3
63 SYNTH-CALLIOPE
64 SYNTH-PAD 1
65 SYNTH-PAD 2
66 SYNTH-PAD 3
67 GRASS HARMONICA
68 COUNTRY FARM
69 SYNTH-BASS
SYNTH-SOUND 2
70 PEAL DROP
71 COSMIC SOUND
72 SOUNDTRACK
73 SPACE PAD
74 SYNTH-SFX
75 SE 1 (VEHICLE)
76 SE 2 (TELEPHONE)
77 SE 3 (SPACE)
78 SE 4 (INVADER)
79 SE 5 (FUNNY)
LAYER
80 STRINGS PIANO
81 STRINGS EP
82 CHOIR EP
83 CHOIR ORGAN
84 STRINGS GUITAR
85 STRINGS HARP
86 BRASS STRINGS
87 VIB PAD
88 12 STR GUITAR
89 CHOIR STRINGS
SPLIT/PERCUSSION
90 BRASS/PIANO
91 BRASS/E.PIANO
92 BRASS/VIB
93 BRASS/G.GUITAR
94 BRASS/D.GUITAR
95 STRINGS/PIANO
96 STRINGS/TRUMPET
97 VIBRAPHONE
98 MARIMBA
99 PERCUSSION
POPS
00 POP FUSION
01 BALLAD
02 POP BALLAD
03 RAP POP
04 SOUL BALLAD
05 FUNKY POP
06 16 BEAT
07 8 BEAT 1
08 8 BEAT 2
09 POPS
50 RHYTHMS 20 SONG BANK
ROCK
10 ROCK WALTZ
11 SLOW ROCK
12 SOFT ROCK 1
13 SOFT ROCK 2
14 FOLKIE POP
15 60' S SOUL
16 ROCK
17 HEAVY METAL
18 50'S ROCK
19 CHICAGO BLUES
JAZZ/DANCE
20 BIG BAND
21 SLOW SWING
22 FOX TROT
23 JAZZ WALTZ
24 ACID JAZZ
25 LATIM FUSION
26 TRANCE
27 DISCO
28 RAP
29 FUNK
EUROPEAN/LATIN
30 POLKA
31 MARCH
32 SLOW WALTZ
33 WALTZ
34 TANGO
35 BOSSA NOVA
36 SAMBA
37 MAMBO
38 RHUMBA
39 CHA-CHA-CHA
VARIOUS
40 MERENGUE
41 RAGGAE
42 SKA
43 TEX-MEX
44 FOLKLORE
45 COUNTRY
46 SLOW GOSPEL
47 ADANI
48 BAROQUE
49 ENKA
00 SERENADE "EINE KLEINE NACHTMUSIK"
01 TWINKLE TWINKLE LITTLE STAR
02 ACH DU LIEBER AUGUSTIN
03 AMAZING GRACE
04 ODE TO JOY
05 LONDON BRIDGE
06 LONDONDERRY AIR
07 GREENSLEEVES
08 AULD LANG SYNE
09 JOY TO THE WORLD
10 JINGLE BELLS
11
12
YANKEE DOODLE
13 SANTA LUCIA
14 WHEN THE SAINTS GO MARCHING IN
15 ALOHA OE
16 SPRING FROM "THE FOUR SEASONS"
17 LITTLE BROWN JUG
18 MARCH FROM "THE NUTCRACKER"
19 THE ENTERTAINER
O CHRISTMAS TREE
0
TONE
RHYTHM
SONG
BANK
MELODY
ON/OFF
5
1
6
2
7
3
8
4
9
MULTI FUNCTION DISPLAY
ELECTRIONIC KEYBOARD
CTK-330
CTK-330

— 2 —
CONTENTS
Specifications .......................................................................................................................... 2
Block Diagram......................................................................................................................... 3
Circuit Description ...................................................................................................................4
Major Waveforms .................................................................................................................... 7
Schematic Diagrams ............................................................................................................... 8
Printed Circuit Board .............................................................................................................10
Exploded View ...................................................................................................................... 11
Parts List ............................................................................................................................... 13
SPECIFICATIONS
GENERAL
Number of keys: 49
Polyphonic: 12-note
Preset tones: 100
Auto-rhythms: 50, Tempo control: 40 to 255
Accompaniment: Casio Chord, Fingered
Song bank: 20-tune
Tuning control: 440 Hz ±50 cents
Built-in speakers: 4 inch dia. 2 W input rating: 2 pcs
Terminals: Stereo standard Jack (Output impedance: 100 ohm, Output voltage: 3 V (rms)
MAX
Power source: 2-way AC or DC source
AC: AC adapter
DC: 6 AA size dry batteries
Power consumption: 7.2 W
Dimensions(HWD): 988 ×311 ×125 mm (38-15/16 ×12-1/4 ×4-15/16 inches)
Weight: 3.5 kg (7.7 lbs) excluding batteries
ELECTRICAL
Current drain with 9 V DC:
No sound output 120 mA ±30%
Maximum volume 650 mA ±30%
with white keys C1 to G2 pressed in Synth-Lead 1
Volume: 9
Phone output Level (Vrms with 8 ohm load each channel):
with key E3 pressed in Synth-Lead 1 80 mV ±30%
Sound Pressure (at 10 cm away from speaker):
with key E3 pressed in Synth-Lead 1 100 dB ±10 dB
Minimum operating voltage: 6.0 V

— 3 —
CPU
MSM 6755B-08
LSI101
Keyboard
Buttons
LED
Reset IC
IC102 Oscillator X101, Q107
Q111
Power Supply Circuit
Q101 ~ Q104, D106
Power Amp.
LA4598
IC101
Filter (L)
Q105
Filter (R)
Q106
Output
DC+9V IN
VC  AVDD DVDD LVDD
APO
CC1 ~ CC3
La ~ Lg,
Lp KO8 ~
KO11 KI0 ~ KI7
KO0 ~ KO7
BLOCK DIAGRAM

— 2 —
KI0 KI1 KI2 KI3 KI4 KI5 KI6 KI7
KO0 C2 G#2 E3 C4 G#4 E5 C6
KO1 C#2 A2 F3 C#4 A4 F5
KO2 D2 A#2 F#3 D4 A#4 F#5
KO3 D#2 B2 G3 D#4 B4 G5
KO4 E2 C3 G#3 E4 C5 G#5
KO5 F2 C#3 A3 F4 C#5 A5
KO6 F#2 D3 A#3 F#4 D5 A#5
KO7 G2 D#3 B3 G4 D#5 B5
KO8 0 1 2 3 4 Start/Stop Tempo
Up Volume Up
KO9 56789
Tempo
Down Volume Down Synchro/ Fill-In
KO10 Tone Rhythm Song
Bank Melody On/Off
KO11 Fingered CASIO
Chord Normal Power Off
CIRCUIT DESCRIPTION
KEY MATRIX
NOMENCLATURE OF KEYS
C2
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
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 —
Amp.
LA4598 Filter
Block CPU
MSM6755B-08
Pin No. Terminal In/Out Function
1 ~ 29 MA14 ~ NC2 — Not used.
30 DGND In Ground (0 V) source
31 DVCC In +5 V source
32, 33 XTLO, XTLI In/Out 20 MHz clock input/output
34 NC3 — Not used. Connected to ground.
35 RSTB In Reset signal input
36 P24/RXD — Not used. Connected to +5 V.
37 P25/TXD — Not used.
38 NMI In Power on signal input. Connected to +5 V.
39 APO Out APO (Auto Power Off) signal output
40 NC4 — Not used.
41 REFH Out Terminal for the built-in DAC
42, 43 NC5, NC6 — Not used.
44 DAOR Out Right channel sound waveform output
45 NC7 — Not used.
46 AVdac In +5 V source for the built-in DAC and ADC
47 DAOL Out Left channel sound waveform output
48 REFL Out Terminal for the built-in DAC and ADC
49 AGdac In Ground source for the built-in DAC
50 AGadc In Ground source for the built-in ADC
51 ANI — Not used. Connected to ground.
52 AVadc In +5 V source for the internal ADC
53 NC8 — Not used. Connected to +5 V.
54 MOD0 In Mode selection terminal
55, 56 MOD1, MOD2 In Mode selection terminal
57 KO9/P40 In APO cancelation signal input
58 ~ 65 KI0/P30 ~ KI7/P37 In Terminals for key/button input signal
66 ~ 73 KO1/P50 ~ KO8/P57 Out Terminals for key scan signal
74 ~ 77 P20 ~ P23 Out Terminals for button scan signal
78 NC9 — Not used.
79 LVCC In +5 V source
80 ~ 82 CC1 ~ CC3 Out LED common signal output
83 ~ 87 — — Not used.
88 ~ 95 La ~ Lg, Lp Out LED segment signal output
96 LGND In Ground (0 V) source
97 ~ 100 — — Not used.
CPU (LSI101: MSM6755B-06)
The CPU contains a sound data ROM and a DAC (Digital to Analog Convertor), and it provides left and right
channel sound waveforms in accordance with the pressed key and the selected tone.
The following table shows the pin functions of LSI101.
FILTER BLOCK
Since the sound signal from the CPU is a stepped waveform, the filter block is added to smooth the waveform.

— 4 —
CPU
LSI101
MSM6755B
La~Lg, Lp
CC1~CC3
LVDD
Q106~Q108
LED Driver
POWER AMPLIFIER (IC101: LA4598)
The power amplifier is a two-channel amplifier with standby switch.
The following table shows the pin function of IC101.
Pin No. Terminal In/Out Function
1 Power GND In Ground (0 V) source
2 Ch1 B.S. — Terminal for a bootstrap capacitor
3 Ch1 OUT Out Channel 1 output
4 VCC In +9 V source
5 Ch1 N.F. In Negative feedback input
6 Ch1 IN In Channel 1 input
7 D.C. — Terminal for a decoupling capacitor
8 Pre GND In Ground (0 V) source
9 Stand by In Power control signal input. 0 V: Off, +9 V: On
10 Ch2 IN In Channel 2 input
11 Ch2 N.F. In Negative feedback input
12 Ch2 OUT Out Channel 2 output
13 Ch2 B.S. — Terminal for a bootstrap capacitor
14 NC — Not used
LED DRIVING

— 5 —
Amp.
LA4598 Filter
Block CPU
MSM6755B-08
Pin No. Terminal In/Out Function
1 ~ 29 MA14 ~ NC2 — Not used.
30 DGND In Ground (0 V) source
31 DVCC In +5 V source
32, 33 XTLO, XTLI In/Out 20 MHz clock input/output
34 NC3 — Not used. Connected to ground.
35 RSTB In Reset signal input
36 P24/RXD — Not used. Connected to +5 V.
37 P25/TXD — Not used.
38 NMI In Power on signal input. Connected to +5 V.
39 APO Out APO (Auto Power Off) signal output
40 NC4 — Not used.
41 REFH Out Terminal for the built-in DAC
42, 43 NC5, NC6 — Not used.
44 DAOR Out Right channel sound waveform output
45 NC7 — Not used.
46 AVdac In +5 V source for the built-in DAC and ADC
47 DAOL Out Left channel sound waveform output
48 REFL Out Terminal for the built-in DAC and ADC
49 AGdac In Ground source for the built-in DAC
50 AGadc In Ground source for the built-in ADC
51 ANI — Not used. Connected to ground.
52 AVadc In +5 V source for the internal ADC
53 NC8 — Not used. Connected to +5 V.
54 MOD0 In Mode selection terminal
55, 56 MOD1, MOD2 In Mode selection terminal
57 KO9/P40 In APO cancelation signal input
58 ~ 65 KI0/P30 ~ KI7/P37 In Terminals for key/button input signal
66 ~ 73 KO1/P50 ~ KO8/P57 Out Terminals for key scan signal
74 ~ 77 P20 ~ P23 Out Terminals for button scan signal
78 NC9 — Not used.
79 LVCC In +5 V source
80 ~ 82 CC1 ~ CC3 Out LED common signal output
83 ~ 87 — — Not used.
88 ~ 95 La ~ Lg, Lp Out LED segment signal output
96 LGND In Ground (0 V) source
97 ~ 100 — — Not used.
CPU (LSI101: MSM6755B-06)
The CPU contains a sound data ROM and a DAC (Digital to Analog Convertor), and it provides left and right
channel sound waveforms in accordance with the pressed key and the selected tone.
The following table shows the pin functions of LSI101.
FILTER BLOCK
Since the sound signal from the CPU is a stepped waveform, the filter block is added to smooth the waveform.

— 6 —
CPU
LSI101
MSM6755B
La~Lg, Lp
CC1~CC3
LVDD
Q106~Q108
LED Driver
POWER AMPLIFIER (IC101: LA4598)
The power amplifier is a two-channel amplifier with standby switch.
The following table shows the pin function of IC101.
Pin No. Terminal In/Out Function
1 Power GND In Ground (0 V) source
2 Ch1 B.S. — Terminal for a bootstrap capacitor
3 Ch1 OUT Out Channel 1 output
4 VCC In +9 V source
5 Ch1 N.F. In Negative feedback input
6 Ch1 IN In Channel 1 input
7 D.C. — Terminal for a decoupling capacitor
8 Pre GND In Ground (0 V) source
9 Stand by In Power control signal input. 0 V: Off, +9 V: On
10 Ch2 IN In Channel 2 input
11 Ch2 N.F. In Negative feedback input
12 Ch2 OUT Out Channel 2 output
13 Ch2 B.S. — Terminal for a bootstrap capacitor
14 NC — Not used
LED DRIVING

— 7 —
MAJOR WAVEFORMS
1Clock pulse
MSM6755B-08 pin 32 2Reset signal MSM6755B-08 pin 35
3APO signal
MSM6755B-08 pin 39
1
4
5
2
3
7
6
4Sound waveform (R-ch)
MSM6755B-08 pin 44
5Sound waveform (L-ch)
MSM6755B-08 pin 47
6Button scan signal KO10
MSM6755B-08 pin 76
7Button scan signal KO11
MSM6755B-08 pin 77
Tone: whistle
Key: A4
Volume:
8LED common signal CC2
MSM6755B-08 pin 81
9LED common signal CC3
MSM6755B-08 pin 82
8
9

— 8 —
SCHEMATIC DIAGRAMS
Main PCB KDM441-MA1M/MA2M
1
23
5
4
7
6
9
8

— 9 —
Keyboard PCBs KDM4910K-KY1M/KY2M

— 10 —
PRINTED CIRCUIT BOARD
Main PCB KDM441-MA1M
4 52316789

EXPLODED VIEW
1
2
3
4
5
6
7
8
9
10
11
12
13
14
14
R-1
R-2
R-3
R-4
R-5
R-6
— 11 —

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.
PARTS LIST
CTK-330

Item Code No. Parts Name Specification Q R
Main PCB
1 6925 4480 Main PCB ass'y M441-MA1,2M M140451*1 1 B
LSI101 2012 3948 LSI, CPU MSM6755B-08 1 A
IC101 2114 2891 IC, Amp. LA4598 1 A
IC102 2105 5922 IC RE5VL40AA-TZ 1 A
Q101 2250 0168 Transistor 2SA854SR-TP-T 1 A
Q102, Q105 - Q110, 2220 1387 Transistor 2SC1740SQ-TP-T 8 A
Q112
Q103, Q104 2253 0448 Transistor 2SD1858Q,R-TV6-T 2 A
Q111 2200 2449 Transistor 2SA933SQ-TP-T 1 A
D101 2390 0371 Diode DSK10B-BT-T 1 B
D102 2390 1323 Diode RB100A-T32-T 1 B
D103, D105, 2390 1344 Diode 1SS133T-77-T 23 C
D107 - D127
D106 2360 2002 Diode, Zener MTZJ5.6B-T77-T 1B
D128 2390 2828 Diode RB441Q-40T-77 1B
D133 2360 1715 Diode, Zener MTZJ3.9B-T77-T 1B
LED101 2370 1309 LED LB-603VF1 1 B
X101 2590 1526 Ceramic oscillator EFO-EN2005C4 1 B
J101 3501 7049 Jack, Power HEC2305-01-330 1B
J102 3612 0665 Jack, Phone YKB21-5006 1 C
Keyboard PCB
2 6925 4490 Keyboard PCB ass'y M140449*1 1 C
D701 - D749 2301 0101 Diode 1S2473T-77-T 49 B
Mechanical Parts
3 6922 2720 White key set, LT-CB M312118*1 3 A
4 6922 2730 White key set, LT-CS M312118*2 1 A
5 6922 2740 Black key set, LT-10P M111726-1 2 A
6 6922 4000 Key contact rubber, 31-contact M111765-1 1A
7 6923 2390 Key contact rubber, 18-contact M240025-1 1A
8 6925 4500 Battery cover M340528*1 1B
9 6925 4510 Rubber button M240463-1 1B
10 6925 4520 Rubber button M240464-1 1B
11 6909 5890 Slide contact CSB-12D 1B
12 6921 5030 Slide knob M311859-1 1B
13 6925 4530 Display plate M340511-1 1 C
14 3831 0770 Speaker S10JA13A 2B
Accessory
6916 7880 Music stand M310827-1 1B
Notes: Q – Used quantity
R – Rank — 13 —

MA0800761A Aug, 1996