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Casio CTK-220L manual

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Table of contents for the manual

  • Page 1

    ELECTRONIC KEYBOARD CTK-220L CTK-220L 25 RHYTHMS POWER/MODE FINGERED CASIO CHORD NORMAL VOLUME SYNCHRO/ FILL-IN START/ STOP TEMPO TONE SONG BANK STEP 1 STEP 2 STEP 3 MULTI FUNCTION DISPLAY DEMO RHYTHM TONE SONG BANK PART SELECT RHYTHM 0 5 1 6 2 7 3 8 4 9 TRANSPOSE/TUNE ¢ ¢ ¢ ¢ ON OFF   20 SONG BANK KEYB[...]

  • Page 2

    CONTENTS Page Specifications ................................................................................................................................... 1 Block Diagram .................................................................................................................................. 2 Circuit Description ....................[...]

  • Page 3

    — 1 — SPECIFICA TIONS GENERAL Number of keys: 49 Polyphonic: 12-note Preset tones: 100 Transpose: F# ~ C ~ F: half-note Auto-rhythms: 25, Tempo: Adjustable, 216 steps (40 ~ 255), initial value: 120 Accompaniment: CASIO Chord, Fingered, Fill-in pattern, Synchro start Song bank: 20-tune Digital volume control: 10 steps (0 ~ 9), initial value: 7 T[...]

  • Page 4

    — 2 — BLOCK DIAGRAM Buttons Illuminant Keyboard 7 seg. LED LED Latch IC2, IC3 Q5 ~ Q8 Q1 ~ Q4 PG X1, Q11 Reset IC IC1 Power Supply Circuit Q301 ~ Q304 D334, D336 Amp. IC301 LA4598 Filter Q305 Phone/Output DC+9 V IN APO MD0 ~ MD7 KO8 ~ KO11 LY1 ~ LY7 KO0 ~ KO7 LX0 ~ LX7 KI0 ~ KI7 CPU LSI1 MSM 6755B-13 LED Driv[...]

  • Page 5

    — 3 — LX0 LX1 LX2 LX3 LX4 LX5 LX6 LX7 LY1 D4 D3 C3 C2 G#2 F#2 D#2 C#2 LY2 C4 E3 B2 D2 A#2 C#3 D#3 F#3 LY3 B3 F3 A2 E2 D#4 C#4 A#3 G#3 LY4 A3 G3 G2 F2 C#5 A#4 G#4 F#4 LY5 E4 C5 D5 B5 D#5 F#5 G#5 A#5 LY6 F4 B4 E5 A5 C6 LY7 G4 A4 F5 G5 CIRCUIT DESCRIPTION KEY MATRIX LED MATRIX KI0 KI1 KI2 KI3 KI4 KI5 KI6 KI7 KO0 C2 G#2 E3 C4 G#4 E5 C6 KO1 C#2 A2 F[...]

  • Page 6

    — 4 — Pin No. Terminal In/Out Function 1 MA14 — Not used. 2 MWEB Out Clock for LED latches 3 ~ 5 — — Not used. 6 MA0 Out 7-seg. LED drive signal 7 ~ 19 MA1 ~ MA11 — Not used. 20 ~ 27 MD0 ~ MD7 Out 7-seg. LED drive signal 28, 29 NC1, NC2 — Not used. 30 DGND In Ground (0 V) source 31 DVCC In +5 V source 32, 33 XTLO, XTLI In/Out 20 MHz c[...]

  • Page 7

    — 5 — LG LVDD CPU  LSI1  MSM6755B-13 LX0 ~ LX7 LY1 ~ LY7 Q1 ~ Q4 Q5 ~ Q8 Q2 ~ Q4 La ~ Lg (Common) (Segment) MWEB LED Latch IC3 7-segment LED Keyboard LEDs LED Latch IC2 MD0 ~ MD3 MD4 ~ MD7 MA0 Amp. IC301 Filter Block Q305 CPU LSI1 FILTER BLOCK Since the sound signal from the CPU is a stepped waveform, the fil[...]

  • Page 8

    — 6 — 1 2 4 3 5 6 1 APO signal MSM6755B-13 pin 39 2 Reset signal RH5VL40AA pin 1 4 Sound signal JH connector pin 2 5 LED drive signal LX0 MSM6755B-13 pin 88 3 Clock MSM6755B-13 pin 32 6 LED drive signal LY1 MSM6755B-13 pin 81 Tone: Whistle (59) Key : A4 Key: D4 MAJOR W A VEFORMS[...]

  • Page 9

    — 7 — 2 4 1 3 5 6 PRINTED CIRCUIT BOARDS Sub PCB KDM445-MA2M Top view Main PCB JCM446-MA1M Bottom view Top view GR 0 R 5 5 E R309 R324 VC JA3 5 5 D329 R354 Q305 C363 R353 R352 R342 5 5 125 5 5 75 125 125 225 C348 C342 C374 R326 R325 C341 C344 C350 IC301 C347 C345 C346 C349 R365 R339 C361 225 200 100 5 R310 R348 R343 C339 B 5 E 5 5 5 AVDD DVDD L[...]

  • Page 10

    — 8 — Connected to KDM4910K-KY2M Connected to KDM445-LD2M Note: KI signals are renamed. (e.g. KI0 on the keyboard PCB ⇒ KI1 on the main PCB) NO USE FOR CTK-330 NO USE FOR CTK-330 NO USE FOR CTK-330 5 4 3 2 1 6 7 SCHEMA TIC DIAGRAMS Main PCB JCM446-MA1M[...]

  • Page 11

    — 9 — Sub PCBs KDM445-MA2M/MA3M[...]

  • Page 12

    — 10 — Keyboard PCBs KDM4910K-KY1M/KY2M[...]

  • Page 13

    — 11 — LED PCB KDM446-LD1M[...]

  • Page 14

    — 12 — PCB NAME LED PCB KDM445-LD2M[...]

  • Page 15

    — 13 — PCB NAME PCB NAME LED PCB KDM446-LD3M LED PCB KDM445-LD4M[...]

  • Page 16

    11 10 3 4 R-3 R-4 1 14 13 12 2 18 19 15 16 5 6 17 9 7 8 R-2 R-1 EXPLODED VIEW — 14 —[...]

  • Page 17

    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 "GUIDEB[...]

  • Page 18

    Item Code No. Parts Name Specification Q R Main PCB 1 6925 6160 Main PCB ass'y (MA1M) M240438*3 1 B LSI1 2012 4690 LSI, CPU MSM6755B-13 1 A IC1 2105 5922 IC RH5VL40AA-T1 1 A IC2 2105 4452 IC HD74HC174FPTR 1 A IC3 2105 5796 IC HD74HC4511FPTR 1 A Q1 - Q4 2259 2555 Transistor, Chip, Digital UMW1NTL 4 A Q5 - Q8 2259 2562 Transistor, Chip, Digital [...]

  • Page 19

    MA1100761A Nov, 1996[...]