Instruction/ maintenance manual of the product CTK-230 Sep. 2003 Casio
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HIGH-GRADE KEYBOARD CTK-230 SEP . 2003 CTK-230 Ver.1 : Jan. 2004 INDEX.
CONTENTS Specifications ---------------------------------------------------------------------------------------------- 1 Block Diagram -----------------------------------------------------------------.
— 1 — SPECIFICA TIONS GENERAL Keyboard: 49 standard-size keys, 4 octaves T ones: 100 Polyphony: 12 notes maximum (6 for certain tones) Auto Accompaniment Rhythm Patterns: 100 T empo: V ariable (23.
— 2 — BLOCK DIAGRAM MPU ML6556 IC202 LCD Power Supply Circuit Q201 ~ Q203, D204 Power Amp. LA4227 IC201 Speaker (L) Speaker (R) Phones/Output VC AVDD VCC DVDD APO KOD8 ~ KOD12 DC + 9 V IN DB4 ~ DB.
— 3 — 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 A.
— 4 — PRINTED CIRCUIT BOARDS Main PCB CMW277-MAIN Top View Bottom View JACK PCB CMW277-MA2M.
— 5 — DISASSEMBL Y Main PCB JACK PCB Speaker Speaker 1. Remove the battery cover and then take out the battery . 2. Remove 7 screws and then the console panel. 3. Remove 12 screws and then the Main PCB. 4. Remove 2 screws and then the JACK PCB. 5.
— 6 — ■ Initial Setting 1. Connect an AC adaptor. ■ How to start diagnostic program 1. Press the “POWER” button while pressing the “0 Up” and “START/STOP” buttons. DIAGNOSTIC PROGRAM ■ Diagnostic program 1. MODE Swtich check 1 Press “CASIO CHORD” button.
— 7 — Message on LCD 6. LCD check 1 Press “ TONE ” button. 2 Press “ TONE ” button. *Pip sound must be audible. The display must be changed to turn on all dots. 3 Press “ TONE ” button. The display must be changed to no display. 4 Press “ TONE ” button.
— 8 — SCHEMA TIC DIAGRAMS Main PCB CMW277-MAIM.
— 9 — Keyboard PCBs JCM4911K-KY1M/KY2M.
— 10 — EXPLODED VIEW 17 16 1 2 3 5 6 7 8 9 10 11 12 13 14 15 18.
— 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.
— 12 — N Item Parts code Parts name Specification Q Price Code R Remarks N 1 9481 2403 ASSY/PANEL/SPEAKER CTK-230-1 1 BG C N 2 1014 9232 KNOB ##073-49104000 1 AA C N 3 1014 9231 SWITCH/SLIDE KNOB .
CASIO TECHNO CO.,LTD. Overseas Service Division 6-2, Hon-machi 1-Chome Shibuya-ku, Tokyo 151-8543, Japan Ver.1 : Jan. 2004 Replacement of the EXPLODED VIEW and PARTS LIST.
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