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Casio LK-300TV Service Manual
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Casio LK-300TV Service Manual

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LK-300TV
MAY. 2006
LK-300TV
ELECTRONIC KEYBOARD
INDEX

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Summary of Contents for Casio LK-300TV

  • Page 1 LK-300TV MAY. 2006 LK-300TV ELECTRONIC KEYBOARD INDEX...

  • Page 2: Table Of Contents

    CONTENTS Specifications ---------------------------------------------------------------------------------------------- 1 Circuit Description --------------------------------------------------------------------------------------- 2 Printed Circuit Board ------------------------------------------------------------------------------------ 3 Diagnostic Program -------------------------------------------------------------------------------------- 6 Exploded View --------------------------------------------------------------------------------------------- 9 Parts List --------------------------------------------------------------------------------------------------- 10 Schematic Diagrams ----------------------------------------------------------------------------------- 13...

  • Page 3: Specifications

    101 steps (A4 = approximatery 440Hz ±50Cents) Tuning: Card Supported Memory Cards: SD memory cards, optional CASIO song data cards ∗ ∗ May not be available in some geographic areas. Supported SD Cards: 1 GB or less (Cards with capacity greater than 1 GB are not supported.)

  • Page 4: Circuit Description

    CIRCUIT DESCRIPTION KEY MATRIX KC7- C2 (1) C#2(1) D2 (1) D#2 (1) E2 (1) F2 (1) F#2 (1) G2 (1) C2 (2) C#2 (2) D2 (2) D#2 (2) E2 (2) F2 (2) F#2 (2) G2 (2) G#2 (1) A2 (1) A#2 (1) B2 (1) C3 (1)

  • Page 5: Printed Circuit Board

    PRINTED CIRCUIT BOARDS Main PCB M664-MDA1 — 3 —...
  • Page 6 CONSOLE PCB M664-CNA1 CONSOLE PCB M664-CNA2 CONSOLE PCB M664-CNA3 CONSOLE PCB M664-CNA4 — 4 —...
  • Page 7 SUB PCBs M664-SDA1 LED PCBs CSM446-LD3M/LD4M/LD5M — 5 —...

  • Page 8: Diagnostic Program

    DIAGNOSTIC PROGRAM I Initial Setup 1. Connect the AC adaptor. 2. Connect a Sustain pedal. 3. Setting SD card into slot. 3. “MODE” switch: NORMAL 4. “MAIN VOLUME”: MAX 5. “MIC VOLUME”: MIN NOTE: If there is no Sustain pedal, Sustain pedal check can be skipped. I How to start diagnostic program 1.
  • Page 9 Message on LCD 6. ROM Ver. check 1 Press “3” button. (internal ROM) 2 Press “3” button. (extenal ROM) 7. RAM check 1 Press “+” button. * Confirmation sound sounds. 8. D/A check 1 Press the “4” button. * When standing in the center, the tester hears the minimum test sound in an equal volume from both right and left speakers.
  • Page 10 Message on LCD 12. APO check 1 Press the “PRACTICE PHRASE” button. To discharge * Go out from TEST mode (Power off). * The LCD turns off. * Disconnect an AC adaptor. * Disconnect the SD card from slot. * Press the “POWER” button 3 times DIAGNOSTIC PROGRAM IS FINISHED.

  • Page 11: Exploded View

    EXPLODED VIEW — 9 —...

  • Page 12: Parts List

    PARTS LIST LK-300TV 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 without prior notice.
  • Page 13 Price Item Parts Code Parts Name Specification Remarks Code Main PCB 10243438 PCB ASSY/MAIN TK-RJM506904*001 A NTSC 10243444 PCB ASSY/MAIN TK-RJM506904*002 A PAL 23901820 DIODE 1SS355TE-17 D1,2,3 10116986 I.C SN74AHCT1G08DCKR IC7,8 10240648 IC TC74LCX08FT(EL.K) IC22 10197553 IC TC7S04FU(TE85L.F) IC14 10197554 IC TC7SZ126FU(TE85L.F IC17 10197555 IC...
  • Page 14 Price Item Parts Code Parts Name Specification Remarks Code Key board assy 10200656 PCB ASSY/LDA1 TK-RJM505754*001 23701408 LED SLI-332URCTJ2 D501-515 10200657 PCB ASSY/LDB2 TK-RJM505756*001 23701408 LED SLI-332URCTJ2 D516-536 10037820 PCB ASSY/LD3M TK-M240428*6(M476) 10037819 PCB ASSY/LD4M TK-M240429*6(M476) 10037818 PCB ASSY/LD5M TK-M240430*6(M476) 10135908 PCB ASSY/LDA TK-RJM503255*001 10243426 PCB ASSY/KY1M...

  • Page 15: Schematic Diagrams

    SCHEMATIC DIAGRAMS MAIN PCB M664-MDA1(1/2) — 13 —...
  • Page 16 MAIN PCB M664-MDA1(2/2) — 14 —...
  • Page 17 CONSOLE PCB M664-CNA1 — 15 —...
  • Page 18 CONSOLE PCBs M664-CNA2/CNA3/CNA4 — 16 —...
  • Page 19 KEY LED PCB M655-LDA1 — 17 —...
  • Page 20 KEY LED PCB M655-LDB2 — 18 —...
  • Page 21 KEY LED PCBs M446-LD3M/LD4M/LD5M — 19 —...
  • Page 22 KEY PCBs CSM618T-KY1M/KY2M — 20 —...
  • Page 23 CASIO COMPUTER CO.,LTD. Overseas Service Division 6-2, Hon-machi 1-Chome Shibuya-ku, Tokyo 151-8543, Japan...