Casio CTK-611 Service Manual
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Casio CTK-611 Service Manual

Casio CTK-611 Service Manual

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Table of Contents

100 RHYTHMS
INDEX
CTK-611
REVERB
SYNTH
PITCH BEND
MODE
VOLUME
INTRO
SYNCHRO/ENDING
MIXER
TEMPO
START
MEMORY
MAX
FULL RANGE
CHORD
FINGERED
POWER
CASIO CHORD
STEP
NORMAL
STOP
MIN
ACCOMP
VOLUME
NORMAL/FILL-IN
VAR/FILL-IN
MC-Service
ELECTRONIC KEYBOARD
DEMO
RHYTHM
TONE
REVERB
HALL
GM
TRANSPOSE/
STAGE
FREE
TUNE/MIDI
ROOM
SESSION
SYNTH
LAYER
MIXER
SPLIT
MEMORY
FREE
TOUCH
STEP
SESSION
CURSOR
RESPONSE
LAYER
MEMORY TRACK/DRUM PAD
CHORD/1
2
3
4
5
6
SPLIT
TOUCH
RESPONSE
ENTER
200 TONES
ENVELOPE
AMP
PITCH
ENVELOPE
ENVELOPE
000-048 DECAY
00 FLAT
049-137 SUSTAIN 01-19 VIBRATO
20-49 OTHERS
CTK-611

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Summary of Contents for Casio CTK-611

  • Page 1 CTK-611 100 RHYTHMS 200 TONES REVERB DEMO RHYTHM TONE ENVELOPE REVERB PITCH HALL ENVELOPE ENVELOPE TRANSPOSE/ SYNTH STAGE FREE TUNE/MIDI 000-048 DECAY 00 FLAT ROOM SESSION SYNTH LAYER MIXER SPLIT MEMORY FREE PITCH BEND MODE VOLUME INTRO SYNCHRO/ENDING MIXER TOUCH...

  • Page 2: Table Of Contents

    CONTENTS Specifications ........................... 1 Block Diagram ..........................3 Circuit Description ..........................4 Adjustment ............................. 11 Major Waveforms ........................... 12 Printed Circuit Boards ........................13 Schematic Diagrams ........................14 Exploded View ..........................19 Parts List ............................20...

  • Page 3: Specifications

    3 reverb types (HALL, STAGE, ROOM) Auto accompaniment Rhythm patterns: Tempo: Variable (216 steps, = 40 to 255) Chords: 3 fingering methods (CASIO CHORD, FINGERED, FULL RANGE CHORD) Rhythm controller: START/STOP, INTRO, NORMAL/NORMAL FILL-IN, VARIATION/VARI- ATION FILL-IN, SYNCHRO/ENDING Accomp volume:...
  • Page 4 ELECTRICAL Current drain with 9 V DC: 340 mA ± 20 % No sound output 1012 mA ± 20 % Maximum volume with 12 keys from C3 to B3 pressed in Square wave tone Volume: maximum, Touch response: maximum Reverb: Hall Phone output level (Vrms with 8 Ω...

  • Page 5: Block Diagram

    BLOCK DIAGRAM SEG1 ~ SEG40 Working Storage LCD Driver RAM (256K-bit) MIDI P10, P13 LSI4 LSI401 TC55257DFL-70L(EL) P14, P17 SED1278F2A COM1 ~ COM16 Reset IC RESET RN5VD40AA FI0 ~ FI9 MA14 SI0 ~ SI9 Keyboard Sound Source ROM MD0 ~ MD15 LSI1 (16M-bit) KC0 ~ KC7...

  • Page 6: Circuit Description

    Stop Drum Pad Tempo Step Demo Drum Pad Tempo Transpose/ Memory Tune/MIDI Full Range Touch Intro Reverb Chord Response Normal/ Accomp Fingered Free Session Fill-In Volume Synchro/ Casio Chord Layer Synth Ending Variation/ Normal Split Mixer Fill-In — 4 —...
  • Page 7 Note: Each key has two contacts, the first conatct (1) and second contact (2). First contact (1) Second contact (2) NOMENCLATURE OF KEYS 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 C2 D2 G2 A2 C3 D3 G3 A3 B3 C4...
  • Page 8 CPU (LSI1: UPD913GF-3BA) The 16-bit CPU contains a 1k-byte RAM, three 8-bit I/O ports, two timers, a key controller and serial interfaces. The CPU detects key velocity by counting the time between first-key input signal FI and second-key SI from the keyboard.
  • Page 9 Pin No. Terminal In/Out Function +5 V source Ground (0 V) source MRDB Read enable signal output for the sound source ROM 83 ~ 98 MD0 ~ MD15 In/Out Data bus Reset signal output for the DSP In/Out Data bus for the LCD driver DIGITAL SIGNAL PROCESSOR (LSI2: HG51B227FB-1) The DSP receives 16-bit serial sound data output from the CPU and adds the selected effect to the sound data using the effect RAM.
  • Page 10 Pin No. Terminal In/Out Function 42 , 44, 46 ~ 48, EA0 ~ EA12 Address bus for the effect RAM 51 ~ 59, 61 ECEB Chip enable signal output for the effect RAM EOEB Read enable signal output for the effect RAM VSS3 Ground (0 V) source EWEB...
  • Page 11 DAC (LSI6: UPD6379GR) The DAC receives 16-bit serial data output from the DSP. The data contains digital sound data of the melody, chord, bass, and percussion for the right and left channels. The DAC converts the data into analog waveforms and output them to each channel separately. Synch signal SCK1 SINC...
  • Page 12 POWER AMPLIFIER (IC101: TA8248K) The power amplifier is a two-channel amplifier with standby switch. The following table shows the pin function of IC101. Pin No. Terminal In/Out Function — Not used B.S.2 — Terminal for a bootstrap capacitor OUT2 Channel 2 output +9 V source OUT1 Channel 1 output...

  • Page 13: Adjustment

    ADJUSTMENT DISPLAY PCB 1) Items to be adjusted: Item Measuring Instrument Vop voltage setting Voltmeter 2) Adjustment and Test Point Locations (TOP VIEW) VR401 3) Equipment connection/Procedure Vop voltage setting Voltmeter Output Input Input Output Output Input Adjust for Adjust Point Signal Connection...

  • Page 14: Major Waveforms

    MAJOR WAVEFORMS 20 ms 1 ms 0.5 s 1 ms Power button ON – – – – ˜ ˜ ˜ ˜ CH1: 5 V CH2: 5 V CH1: 5 V CH2: 5 V CH1: 50 mV CH2: 50 mV CH1: 50 mV CH2: 50 mV 1 NMI signal 3 Button scan signal PA0...

  • Page 15: Printed Circuit Boards

    PRINTED CIRCUIT BOARDS Sub PCB JCM462-MA2M Top View Main PCB JCM462-MA1M Bottom View Top View — 13 —...

  • Page 16: Schematic Diagrams

    SCHEMATIC DIAGRAMS Main PCB JCM462-MA1M — 14 — MC-Service...
  • Page 17 Sub PCB JCM462-MA2M/Volume PCB JCM462-MA3M — 15 — MC-Service...
  • Page 18 Display PCB JCM462-LCD1M — 16 — MC-Service...
  • Page 19 Keyboard PCBs JCM617T-KY1M/KY2M — 17 — MC-Service...
  • Page 20 Common Segment — 18 — MC-Service...

  • Page 21: Exploded View

    EXPLODED VIEW — 19 —...

  • Page 22: Parts List

    PARTS LIST CTK-611 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 23 Item Code No. Parts Name Specification Main PCB 6925 8440 PCB/ASS'Y (MA1M) M240613*1 LSI1 2012 4879 LSI/CPU UPD913GF-3BA(T) LSI2 2012 2079 LSI/DSP HG51B277FB-1 LSI3 2012 5590 LSI/ROM UPD23C16000WGX-C51 LSI4/LSI5 2012 5572 LSI/RAM TC55257DFL-70L(EL) LSI6 2105 4746 LSI/DAC UPD6379GR-E1 2012 1883 IC/MOS RN5VD40AA-TR MRC1,2,5,6 2845 6456 R-C NETWORK/CHIP...
  • Page 24 Item Code No. Parts Name Specification 3831 0833 SPEAKER S12J49A 6923 4980 RUBBER/BUTTON M312122-2 6925 8610 RUBBER/BUTTON M240543-1 6926 8280 RUBBER/BUTTON M140516-2 6925 8630 RUBBER/BUTTON M240544-1 6926 8290 RUBBER/BUTTON M240544-3 6926 8300 RUBBER/BUTTON M240545-2 6926 8310 RUBBER/BUTTON M240546-2 6906 9071 RUBBER/BUTTON M240547-2 6925 8680 RUBBER/BUTTON M240548-1...
  • Page 25 CASIO TECHNO CO.,LTD. Overseas Service Division 8-11-10, Nishi-Shinjuku Shinjuku-ku, Tokyo 160-0023, Japan...

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