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Casio CTK-671 Service Manual
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Casio CTK-671 Service Manual

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CTK-671
JUN. 2001
BANK
STORE
CTK-671
ELECTRONIC KEYBOARD
INDEX
Ver.1 : SEP.2001

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Summary of Contents for Casio CTK-671

  • Page 1 CTK-671 JUN. 2001 BANK STORE CTK-671 ELECTRONIC KEYBOARD INDEX Ver.1 : SEP.2001...

  • Page 2: Table Of Contents

    CONTENTS Page Specifications ................................1 Block Diagram ................................. 3 Circuit Description ..............................4 Printed Circuit Boards ............................. 5 Schematic Diagrams ...............................7 Exploded View ..............................12 Parts List ................................13...

  • Page 3: Specifications

    Rhythm Patterns: 104 (internal, 4 user areas) Tempo: Variable (226 steps, = 30 to 255) Chords: 3 fingering methods (CASIO CHORD, FINGERED, FULL RANGE CHORD) Rhythm Controller: Start/Stop, INTRO/ENDING 1 and 2, VARIATION/FILL-IN 1 and 2, SYNCHRO/FILL- IN NEXT Accomp Volume:...
  • Page 4 Mixer Function Channels: Parameters: Channel on/off; tone; part on/off; volume; pan pot; octave shift; coarse tune; fine tune; reverb send; chorus send; DSP line MIDI: 16 multi-timbre receive, GM Level 1 standard Other Functions Transpose: 49 steps (–24 semitones to +24 semitones) Variable (A4 = approximately 440Hz ±100 cents) Tuning: LCD:...

  • Page 5: Block Diagram

    LCD Driver CONT (1Mbit) UPD441000LGZ LSI5 P10 ~ P13 MSW0 ~ MSW3 MODE SWITCH CK0,LRC0,SC0,LRC1 (uPD914GM-3ED) EA0 ~ EA16 Buttons FI8 ~ FI10 ED12 ~ ED19 KI0 ~ KI2 WCKIO LSI1 WCKI1 MIDI IN MIDI OUT CD0 ~ CD15 KC0 ~ KC7 Controller Reset Keyboard...

  • Page 6: Circuit Description

    CIRCUIT DESCRIPTION KEY MATRIX 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) C#3 (1)

  • Page 7: Printed Circuit Boards

    PRINTED CIRCUIT BOARDS Main PCB JCM703-MA1M Top View Bottom View — 5 —...
  • Page 8 Sub PCB KDM703-MA2M — 6 —...

  • Page 9: Schematic Diagrams

    SCHEMATIC DIAGRAMS Main PCB JCM703-MA1M — 7 —...
  • Page 10 Sub PCB JCM703-MA2M — 8 —...
  • Page 11 Display PCB JCM703-LCD1M — 9 —...
  • Page 12 Keyboard PCBs JCM618T-KY1M/KY2M — 10 —...
  • Page 13 PCBs CONGDE JCM703-CN1/CN2 — 11 —...

  • Page 14: Exploded View

    EXPLODED VIEW — 12 —...

  • Page 15: Parts List

    PARTS LIST CTK-671 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. Prices and specifications are subject to change with- out prior notice.
  • Page 16 PARTS PRICE LIST CTK-671 ITEM CODE NO. PART NAME SPECIFICATION PRICE CODE MAIN PCB 1 1005 9366 PCB ASSY(MA1M) TK-M241620*1(M703) D1-D4 6930 4610 DIODE DA227 3025 1862 FILTER/EMI NFM51R00P206 2105 4158 IC/MOS TA75S393F(TE85L) IC11 6931 0466 IC/MOS XC6203E332PR IC12 6930 9999 IC/L-MOS...
  • Page 17 ITEM CODE NO. PART NAME SPECIFICATION PRICE CODE KEYBOARD UNIT 7 6922 2721 WHITE KEY SET/LT M312118A*1 8 6922 2731 WHITE KEY SET/LT M312118A*2 9 6906 8482 BLACK KEY SET 10P M140369B-3 10 6906 8592 BLACK KEY SET 5P M140369B-4 11 6922 2762 RUBBER/KEY M211704B-1 12 6922 2772 RUBBER/KEY...
  • Page 18 Ver.1 : Correction of all contents except exploded view and parts list. Because Service Manual for CTK-671 in Vol.CB-15 contains totaly wrong information. CASIO TECHNO CO.,LTD. Overseas Service Division Nishi-Shinjuku Kimuraya Bldg. 1F 5-25, Nishi-Shinjuku 7-Chome Shinjuku-ku, Tokyo 160-0023, Japan...