Casio CTK-485 User Manual
CTK-485
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100 TONES |
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100 SONG BANK |
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PIANO |
ORGAN |
GUITAR/BASS |
STRINGS/ENSEMBLE BRASS |
REED/PIPE |
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SYNTH-SOUND 1 |
SYNTH-SOUND 2 |
LAYER |
SPLIT/PERCUSSIVE |
00 |
HOW DEEP IS YOUR LOVE |
09 |
CROCODILE ROCK |
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19 |
O CHRISTMAS TREE |
30 |
GRANDFATHER'S CLOCK |
43 |
HOUSE OF THE RISING SUN |
54 |
HOLDIRIDIA |
79 |
HABANERA "CARMEN" |
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00 |
PIANO 1 |
10 |
ELEC ORGAN 1 |
20 |
GUT GUITAR |
30 |
VIOLIN |
40 TRUMPET |
50 |
SOPRANO SAX |
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60 SYN-LEAD 1 |
70 |
RAIN DROP |
80 |
STR PIANO |
90 |
BASS/PIANO |
01 |
IN THE MOOD |
10 |
SAVING ALL |
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20 |
GREENSLEEVES |
31 |
WORKING ON THE RAILROAD |
44 |
AURA LEE |
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55 |
SANTA LUCIA |
80 |
L'ARLESIENNE SUITE |
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56 |
LA CUCARACHA |
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1er PRELUDE |
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01 |
PIANO 2 |
11 |
ELEC ORGAN 2 |
21 |
ACOUS GUITAR |
31 |
CELLO |
41 TUBA |
51 |
ALTO SAX |
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61 SYN-LEAD 2 |
71 |
COSMIC SOUND |
81 |
STR E. PIANO |
91 |
BASS/E. PIANO |
02 |
A WHOLE NEW WORLD |
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MY LOVE FOR YOU |
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21 |
AMAZING GRACE |
32 |
LITTLE BROWN JUG |
45 |
JAMAICA FAREWELL |
57 |
LA PALOMA |
81 |
JOY TO THE WORLD |
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02 |
HONKY-TONK |
12 |
ELEC ORGAN 3 |
22 |
JAZZ GUITAR |
32 |
HARP |
42 BRASS ENS |
52 |
TENOR SAX |
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62 SYN-LEAD 3 |
72 |
SOUND TRACK |
82 |
CHOIR E. P |
92 |
BASS/VIB |
03 |
WHEN YOU WISH |
11 |
THE GIRL FROM IPANEMA |
22 |
AULD LANG SYNE |
33 |
LONG LONG AGO |
46 |
JOHNNY COMES |
58 |
CIELITO LINDO |
82 |
SYMPHONY no.101 |
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03 |
STUDIO PIANO |
13 |
ELEC ORGAN 4 |
23 |
ELEC GUITAR |
33 |
STRINGS 1 |
43 FR. HORN 1 |
53 |
OBOE |
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63 SYN-CALLIOPE |
73 |
SPACE PAD |
83 |
CHOIR ORGAN |
93 |
BASS/GUT GTR |
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UPON A STAR |
12 |
YESTERDAY |
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23 |
TWINKLE TWINKLE |
34 |
MICHAEL |
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MARCHING HOME |
59 |
KATIUCHA |
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"CLOCK" 2nd Mov. |
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04 |
ELEC PIANO 1 |
14 CHURCH ORGAN |
24 |
MUTE GUITAR 34 |
STRINGS 2 |
44 FR. HORN 2 |
54 |
CLARINET |
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64 SYN-PAD 1 |
74 |
VOICE BASS |
84 |
STR GUITAR |
94 |
V.BASS/DOO |
04 |
SUPERSTITION |
13 |
ANOTHER DAY IN PARADISE |
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LITTLE STAR |
35 |
DOMINIQUE |
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47 |
CAMPTOWN RACES |
60 |
TROIKA |
83 |
SPRING |
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05 |
ELEC PIANO 2 |
15 |
PIPE ORGAN |
25 |
DIST GUITAR |
35 |
STRINGS 3 |
45 BRASS 1 |
55 |
PICCOLO |
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65 SYN-PAD 2 |
75 |
APPLAUSE |
85 |
STR HARP |
95 |
STR/PIANO |
05 |
I JUST CALLED |
14 |
HAPPY BIRTHDAY TO YOU |
24 |
LIGHTLY ROW |
36 |
DANNY BOY |
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48 |
SWANEE RIVER |
61 |
SZTA DZIE WECZKA |
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"THE FOUR SEASONS" |
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06 |
ELEC PIANO 3 |
16 |
REED ORGAN |
26 |
WOOD BASS |
36 |
SYNTH-STR 1 |
46 BRASS 2 |
56 |
FLUTE |
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66 SYN-PAD 3 |
76 |
SYNTH-SFX |
86 |
BRASS STR |
96 |
STR/TRUMPET |
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TO SAY I LOVE YOU |
15 |
WE WISH YOU |
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25 |
ACH DU LIEBER AUGUSTIN |
37 |
ANNIE LAURIE |
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49 |
JEANNIE WITH |
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62 |
POLKA "THE BARTERED BRIDE" |
84 |
THAIS MEDITATION |
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07 |
ELEC PIANO 4 |
17 |
ACCORDION |
27 |
ELEC BASS |
37 |
SYNTH-STR 2 |
47 SYN-BRASS 1 |
57 |
RECORDER |
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67 BOWED GLASS |
77 |
VEHICLE |
87 |
VIB PAD |
97 |
VIBRAPHONE |
06 |
TOP OF THE WORLD |
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A MERRY CHRISTMAS |
26 |
LONDON BRIDGE |
38 |
ALOHA OE |
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THE LIGHT BROWN HAIR |
63 |
WALTZING MATILDA |
85 |
MINUET (J.S.BACH) |
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08 |
HARPSICHORD |
18 |
BANDONEON |
28 |
SLAP BASS |
38 |
CHOIR |
48 SYN-BRASS 2 |
58 |
PAN FLUTE |
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68 COUNTRY FARM |
78 |
PHONE |
88 |
12 STR GTR |
98 |
MARIMBA |
07 |
KILLING ME SOFTLY |
16 |
JINGLE BELLS |
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27 |
J'AI PERDU LE DO |
39 |
MY BONNIE |
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50 |
YANKEE DOODLE |
64 |
AJO MAMMA |
86 |
GAVOTTE (GOSSEC) |
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09 |
CLAVI |
19 |
HARMONICA |
29 |
BANJO |
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39 |
VOICE DOO |
49 SYN-BRASS 3 |
59 |
WHISTLE |
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69 SYN-BASS |
79 |
FUNNY |
89 |
CHOIR STR |
99 |
PERCUSSION |
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WITH HIS SONG |
17 |
SILENT NIGHT |
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28 |
BATTLE HYMN |
40 |
CLAP YOUR HANDS |
51 |
RED RIVER VALLEY |
65 |
RASA SAYANG |
87 |
CANON (PACHELBEL) |
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08 |
ALWAYS ON MY MIND |
18 |
WHEN THE SAINTS |
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OF THE REPUBLIC |
41 |
MY DARLING CLEMENTINE |
52 |
MY OLD KENTUCKY HOME |
66 |
N Ł (KANG DING QING GE) 88 |
LARGO (HANDEL) |
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100 RHYTHMS |
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GO MARCHING IN |
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29 |
SUR LE PONT D'AVIGNON |
42 |
SHE WORE A YELLOW RIBBON |
53 |
HOME ON THE RANGE |
67 |
ODE TO JOY |
89 |
AMERICAN PATROL |
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00-19 POPS |
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60-69 EUROPEAN |
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POWER/MODE |
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VOLUME |
SYNCHRO/ START/ |
TEMPO |
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SONG |
SONG BANK CONTROLLER |
69 |
AIR "SUITE no.3" |
91 |
PIANO SONATA op.13 |
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POPS/BALLAD/16 BEAT/8 BEAT |
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POLKA/MARCH/WALTZ/TANGO |
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¢ |
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FILL-IN |
STOP |
¢ |
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0 |
1 |
2 |
3 |
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4 |
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+ |
TONE |
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BANK |
LEFT |
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ON/OFF |
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RIGHT |
70 |
LE CYGNE |
92 |
"PATHETIQUE" 2nd Mov. |
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20-39 ROCK |
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70-84 LATIN |
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"LE CARNAVAL DES ANIMAUX" |
FUR ELISE |
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SLOW ROCK/SOFT ROCK/SOUL/ROCK/R&B |
BOSSA NOVA/SAMBA/MAMBO/RHUMBA/REGGAE |
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71 |
SWAN LAKE |
93 |
TURKISH MARCH (MOZART) |
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40-49 JAZZ |
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85-99 VARIOUS |
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FINGERED |
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72 |
MARCH "THE NUTCRACKER" |
94 |
PIANO SONATA K.545 1st Mov. |
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73 |
BRINDISI "LA TRAVIATA" |
95 |
WEDDING MARCH |
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BIG BAND/SWING/JAZZ/FUSION |
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COUNTRY/GOSPEL/ETC. |
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ON |
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CASIO CHORD |
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74 |
TRIUMPHAL MARCH "AIDA" |
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(MENDELSSOHN) |
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50-59 DANCE |
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NORMAL |
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75 |
LA DONNA É MOBILE |
96 |
HUNGARIAN DANCE no.5 |
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CLUB/TECHNO/DISCO/RAP/FUNK |
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76 |
TOY SYMPHONY |
97 |
THE ENTERTAINER |
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77 SERENADE |
98 |
NOCTURNE op.9 no.2 |
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"EINE KLEINE NACHTMUSIK" |
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(CHOPIN) |
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100 SONG BANK KEYBOARD |
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MULTI FUNCTION DISPLAY |
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78 |
CHANSON DU TOREADOR |
99 |
VALSE op.64 no.1 |
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⁄ |
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⁄ |
5 |
6 |
7 |
8 |
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9 |
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– |
RHYTHM |
TRANSPOSE/ |
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STOP |
PLAY/ |
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"CARMEN" |
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"PETIT CHIEN" |
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SONG BANK CONTROLLER |
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TRANSPOSE/TUNE |
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TUNE |
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PAUSE |
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CTK-485
INDEX |
ELECTRONIC KEYBOARD |
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CONTENTS |
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Page |
Specifications ............................................................................................................................................ |
1 |
Block Diagram ........................................................................................................................................... |
3 |
Circuit Description ..................................................................................................................................... |
4 |
Troubleshooting ........................................................................................................................................ |
8 |
Adjustment ................................................................................................................................................ |
9 |
Major Waveforms .................................................................................................................................... |
10 |
Printed Circuit Boards ............................................................................................................................. |
11 |
Schematic Diagrams ............................................................................................................................... |
13 |
Exploded View ........................................................................................................................................ |
16 |
Parts List ................................................................................................................................................. |
17 |
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SPECIFICATIONS |
GENERAL |
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Model: |
CTK-485 |
Keyboard: |
61 standard-size keys, 5 octaves |
Tones: |
100 |
Polyphony: |
12 notes maximum (6 for certain tones) |
Auto accompaniment |
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Rhythm Patterns: |
100 |
Tempo: |
Variable (236 steps, = 20 to 255) |
Chords: |
2 fingering methods (CASIO CHORD, FINGERED) |
Rhythm controller: |
START/STOP, SYNCHRO/FILL-IN |
Song Bank |
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Tunes: |
100 |
Controllers: |
PLAY/PAUSE, STOP, LEFT (ON/OFF), RIGHT (ON/OFF) |
Multi function display |
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Name display: |
TONE, RHYTHM, SONG BANK name/number, keyboard settings name/ |
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value |
Tempo: |
Tempo value, metronome, synchro standby, beat indicator |
Other functions |
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Transpose: |
12 steps (–6 semitones to +5 semitones) |
Tuning: |
Variable (A4 = approximately 440 Hz ± 50 cents) |
Volume: |
0 to 9 (10 steps) |
Terminals |
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Phones/output terminal: |
Stereo standard jack |
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Output Impedance: 70 Ω |
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Output Voltage: 2.4 V (RMS) MAX |
Power supply terminal: |
9 V DC |
Power supply: |
Dual power supply system |
Batteries: |
6 AA-size batteries |
Battery life: |
Approximately 2 hours (SUM-3/R6P)/4 hours (AM3/LR6) |
AC adaptor: |
AD-5 |
Auto power off: |
Turns power off approximately 6 minutes after last key operation. Enabled |
|
under battery power only, can be disabled manually. |
Speaker output: |
2.0 W + 2.0 W |
Power consumption: |
9 V . .. 7.0 W |
Dimensions (HWD): |
91.0 × 32.2 × 9.0 cm (35 7/8 × 12 11/16 × 3 9/16 inches) |
Weight: |
Approximately 4.0 kg (8.8 lbs) (without batteries) |
— 1 —
ELECTRICAL
Current drain with 9 V DC: |
137 mA ± 20 % |
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No sound output |
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Maximum volume |
710 mA ± 20 % |
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with white keys C1 to G2 pressed in Synth-Lead 1 |
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Volume: maximum. |
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Speaker output level (Vrms with 40 Ω load each channel): |
L-ch: 1,260 mV ± 20% |
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with key A1 pressed in Synth-Lead 1 |
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Phone output level (Vrms with 8 Ω load each channel): |
R-ch:1,200 mV ± 20% |
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L-ch: 93 mV ± 20% |
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with key A2 pressed in Synth-Lead 1 |
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R-ch: 90 mV ± 20% |
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Minimum operating voltage: |
6.0 V |
— 2 —
LCD
Phones/Output
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Speaker (L) |
Power Amp. |
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LA4598 |
— |
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IC101 |
3 |
Speaker (R) |
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— |
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VC |
VCC DVDD AVDD |
DC + 9 V IN |
Power Supply Circuit |
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Q101 ~ Q104, D205 |
COM1 ~ COM14 |
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LCD Driver |
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KS0066U-10B |
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LSI3 |
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SEG1 ~ SEG40 |
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RS |
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DB4 ~ DB7 |
R/W |
KO8 ~ |
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E |
KO12 |
Filter (L)
Q106
Filter (R)
Q107 CPU MSM 6755B-17
LSI1
APO
Buttons |
Keyboard |
KI0 ~ KI6
KI0 ~ KI7
KO0 ~ KO7
MD0 ~ MD7
ROM(2M-bit)
MA0 ~ MA18 LC372100PMH78
LSI2
DIAGRAM BLOCK
Power |
Reset IC |
Oscillator |
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Switch |
IC1 |
X1, Q1 |
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CIRCUIT DESCRIPTION
KEY MATRIX
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KI0 |
KI1 |
KI2 |
KI3 |
KI4 |
KI5 |
KI6 |
KI7 |
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KO0 |
C1 |
G#1 |
E2 |
C3 |
G#3 |
E4 |
C5 |
G#5 |
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KO1 |
C#1 |
A1 |
F2 |
C#3 |
A3 |
F4 |
C#5 |
A5 |
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KO2 |
D1 |
A#1 |
F#2 |
D3 |
A#3 |
F#4 |
D5 |
A#5 |
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KO3 |
D#1 |
B1 |
G2 |
D#3 |
B3 |
G4 |
D#5 |
B5 |
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KO4 |
E1 |
C2 |
G#2 |
E3 |
C4 |
G#4 |
E5 |
C6 |
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KO5 |
F1 |
C#2 |
A2 |
F3 |
C#4 |
A4 |
F5 |
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KO6 |
F#1 |
D2 |
A#2 |
F#3 |
D4 |
A#4 |
F#5 |
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KO7 |
G1 |
D#2 |
B2 |
G3 |
D#4 |
B4 |
G5 |
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KO8 |
— |
+ |
0 |
Tempo ▼ |
Tempo ▲ |
Volume ▼ |
Volume ▲ |
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KO9 |
3 |
2 |
1 |
Start/Stop |
Synchro/ |
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Fill in |
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KO10 |
6 |
5 |
4 |
Transpose/ |
Song Bank |
Rhythm |
Tone |
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Tune |
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KO11 |
9 |
8 |
7 |
Fingered |
Casio |
Normal |
Power |
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Chord |
off |
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KO12 |
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Right |
Play/Pause |
Stop |
Left |
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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 |
C#6 D#6 |
F#6 G#6 A#6 |
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 |
— 4 —
CPU (LSI1: MSM6755B-17)
The CPU reads sound data from the ROM in accordance with the pressed key and the selected tone; the CPU can read rhythm data simultaneously when a rhythm pattern is selected. Then it provides the left and the right channels’ waveforms separately, by converting the data into the waveforms with two built-in DACs. The CPU also controls key and button input. The following table shows the pin functions of LSI1.
Pin No. |
Terminal |
In/Out |
Function |
1 |
MA14 |
Out |
Address bus |
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2, 3 |
NCO |
— |
Not used |
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4 ~ 19 |
MA0 ~ MA13 |
Out |
Address bus |
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13 |
MRDB |
Out |
Read enable signal |
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17 |
MCSB |
— |
Not used |
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20 ~ 27 |
MD0 ~ MD7 |
In/Out |
Data bus |
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28, 29 |
NC1, NC2 |
— |
Not used |
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30 |
DGND |
In |
Ground (0 V) source |
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31 |
DVCC |
In |
+5 V source |
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32, 33 |
XTLO, XTLI |
In/Out |
20 MHz clock input/output |
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34 |
NC3 |
— |
Not used |
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35 |
RSTB |
In |
Reset signal input |
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36, 37 |
P24/RXD, P25/TXD |
— |
Not used |
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38 |
NMI |
In |
Power ON signal input. Connected to +5 V. |
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39 |
APO |
Out |
APO (Auto Power Off) signal output |
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40 |
NC4 |
— |
Not used |
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41 |
REFH |
Out |
Terminal for the internal DAC |
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42, 43 |
NC5, NC6 |
— |
Not used |
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44 |
DAOR |
Out |
Right channel sound waveform output |
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45 |
NC7 |
— |
Not used |
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46 |
AVdac |
In |
+5 V source for the internal DAC |
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47 |
DAOL |
Out |
Left channel sound waveform output |
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48 |
REFL |
Out |
Terminal for the internal DAC and ADC |
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49 |
AGdac |
In |
Ground source for internal DAC |
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50 |
AGadc |
In |
Ground source for internal ADC |
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51 |
ANI |
In |
APO cancellation signal |
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52 |
AVadc |
In |
+5 V source for the internal ADC |
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53 |
NC8 |
— |
Not used |
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54 |
MOD0 |
In |
Mode selection terminal. Connected to +5 V. |
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55, 56 |
MOD1, MOD2 |
In |
Mode selection terminal. Connected to ground. |
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57 |
P40 |
— |
Not used |
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58 ~ 65 |
KI0/P30 ~ KI7/P37 |
In |
Terminals for key/button input signal |
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66 ~ 73 |
KO0/P50 ~ KO7/P57 |
Out |
Terminals for key scan signal |
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74 ~ 77 |
DB4 ~ DB7 |
Out |
Data bus for the LCD driver |
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78 |
NC9 |
— |
Not used |
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79 |
LVCC |
In |
+5 V source |
— 5 —
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