Casio CTK-230 Sep. 2003 - Manuals

— 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 A4 B4 C5 D5 E5 F5 G5 A5 B5 C6 KID0 KID1 KID2 KID3 KID4 KID5 KID6 KOD8 — + 0 TEMPO TEMPO VOLUME VOLUME ▼ ▲...

— 4 — PRINTED CIRCUIT BOARDS Main PCB CMW277-MAIN Top View Bottom View JACK PCB CMW277-MA2M

— 5 — DISASSEMBLY 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. Remove 8 screws and then the Speaker.

— 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. 2 Press “FINGERED” button. 3 Press “NORMAL” b...

— 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.The display must be changed to pattern 1 dot matrix. 5 Pre...

— 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 p a r t s a r e m a r k e d w i t h i t e m N o . " R - X " i n t h e e x p l o d e dview.C o n t a c t o u r s p a r e p a r t s d e p a r t m e n t i f y o u n e e d t h e s eparts for refurbish. 1. Prices and specifi...

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