Casio CTK-611 Page 2 Service Manual Download

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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

Summary of Contents for CTK-611

Page 1: ...IT CURSOR PITCH BEND MODE VOLUME INTRO SYNCHRO ENDING NORMAL FILL IN VAR FILL IN REVERB GM FREE SESSION LAYER SPLIT TOUCH RESPONSE HALL STAGE ROOM SYNTH MIXER MEMORY STEP CHORD 1 2 3 4 5 6 MEMORY TRAC...

Page 2: ...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: ...ope set attack rate release rate pitch envelope set pitch level touch sense pan Mixer function Channels 16 Parameters Program change number volume expression pan coarse tuning fine tuning on off solo...

Page 4: ...ms with 47k load each channel L ch 1200 mV 20 with key F5 pressed in Bassoon tone R ch 1000 mV 20 Volume maximum Touch response maximum Reverb Hall Minimum operating voltage 6 3 V About General MIDI G...

Page 5: ...mplifier IC101 TA8248K Keyboard MA0 MA19 Power Supply Circuit Q101 Q105 D106 107 D190 VCC AVDD VDD DVDD LVDD VC APO Effect RAM 256K bit LSI5 TC55257DFL 70L EL MD0 MD7 Speakers Output MA0 MA14 MA0 MA1...

Page 6: ...2 F3 2 F 3 2 G3 2 G 3 2 A3 2 A 3 2 B3 2 FI3 C4 1 C 4 1 D4 1 D 4 1 E4 1 F4 1 F 4 1 G4 1 SI3 C4 2 C 4 2 D4 2 D 4 2 E4 2 F4 2 F 4 2 G4 2 FI4 G 4 1 A4 1 A 4 1 B4 1 C5 1 C 5 1 D5 1 D 5 1 SI4 G 4 2 A4 2 4...

Page 7: ...five voltages as shown in the following table VDD voltage is always generated The others are controlled by APO signal from the CPU NOMENCLATURE OF KEYS RESET CIRCUIT When batteries are set or an AC a...

Page 8: ...In AC adaptor detection terminal 5 V when the keyboard is powered by batteries and becomes 0 V to cancel the APO function when AC adaptor is connected 9 AN1 Not used Connected to ground 10 AGND In Gro...

Page 9: ...E Jack input 5 SO Out Serial sound data output for the DAC 6 WCKO Out Word clock output for the DAC 7 VDD3 In 5 V source 8 TEST Not used 9 RESB In Reset signal input 10 VSS2 In Ground 0 V source 11 12...

Page 10: ...M 62 66 70 74 78 VSS2 In Ground source 63 67 71 75 79 VDD2 In 5 V source 64 65 68 69 PA0 PA5 Out Button scan signal output 72 73 76 77 PA6 7 Out Not used Pin No Terminal In Out Function 1 22 SEG1 SEG4...

Page 11: ...3GF 3BA L OUT R OUT SI LRCK CLK SO WCKO SCK1 SO LRCK BCK SINC SI WCKI BCKI FILTER BLOCK Since the sound signals from the DAC are stepped waveforms the filter block is added to smooth the waveforms DAC...

Page 12: ...ootstrap capacitor 3 OUT2 Out Channel 2 output 4 VCC In 9 V source 5 OUT1 Out Channel 1 output 6 B S 1 Terminal for a bootstrap capacitor 7 Power GND In Ground 0 V source 8 Stand by In Power control s...

Page 13: ...V read ing on voltmeter under the temparature 20 to 25 C Makefineadjustment accord ing to the following instruc tion 51 74 LCD Eye Watching the LCD at a 51 74 angle to the horizontal adjust Vop voltag...

Page 14: ...6 0 Dac output R ch JD connector pin 7 A Sound signal L ch JF connector pin 2 B Sound signal R ch JF connector pin 1 7 RS signal PA4 JC connector pin 7 8 R W signal PA5 JC connector pin 6 Tone Whistl...

Page 15: ...13 PRINTED CIRCUIT BOARDS Sub PCB JCM462 MA2M Main PCB JCM462 MA1M Top View Top View Bottom View 12 11 5 6 9 10 2 3 7 8 1 4...

Page 16: ...14 SCHEMATIC DIAGRAMS Main PCB JCM462 MA1M 10 9 7 8 2 3 5 6 1 4 MC Service...

Page 17: ...15 Sub PCB JCM462 MA2M Volume PCB JCM462 MA3M 12 11 MC Service...

Page 18: ...16 Display PCB JCM462 LCD1M MC Service...

Page 19: ...17 Keyboard PCBs JCM617T KY1M KY2M MC Service...

Page 20: ...M15 COM16 COM10 COM12 SEG21 COM11 SEG37 SEG38 SEG39 SEG40 COM 1 COM 2 COM 3 COM 4 COM 5 COM 6 COM 7 COM12 SEG 1 SEG 2 SEG 3 SEG 4 SEG 5 SEG 6 SEG 7 SEG 8 SEG 9 SEG10 SEG11 SEG12 SEG13 SEG14 SEG15 SEG1...

Page 21: ...19 EXPLODED VIEW 25 29 28 R 1 R 2 R 3 13 17 16 7 9 8 1 2 30 11 10 5 4 6 22 23 24 15 31 14 26 12 19 18 20 21 3 17 27...

Page 22: ...e parts department if you need these parts for refurbish 1 Prices and specifications are subject to change with out prior notice 2 As for spare parts order and supply refer to the GUIDEBOOK for Spare...

Page 23: ...C D107 2360 1946 DIODE ZENER MTZJ5 6CT 77 T 1 C D190 2360 1673 DIODE ZENER MTZJ5 6AT 77 T 1 C LED101 2320 3146 LED TLR124 1 C J101 3501 7049 JACK POWER HEC2305 01 330 1 C J102 3612 0665 JACK PHONE YK...

Page 24: ...00 RUBBER BUTTON M240545 2 1 B 24 6926 8310 RUBBER BUTTON M240546 2 1 B 25 6906 9071 RUBBER BUTTON M240547 2 1 B 26 6925 8680 RUBBER BUTTON M240548 1 1 B 27 6913 6410 SWITCH SLIDE CSB 12D 1 B 28 6921...

Page 25: ...CASIO TECHNO CO LTD Overseas Service Division 8 11 10 Nishi Shinjuku Shinjuku ku Tokyo 160 0023 Japan...

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