Casio_CTK-496_Service_Manual电路图.pdf

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1、ELECTRONIC KEYBOARD CTK-496 JUN. 2004 CTK-496 Ver.1 : Feb. 2005 RadioFans.CN 收音机爱 好者资料库 INDEX CONTENTS Specifications - 1 Block Diagram - 3 Circuit Description - 4 Printed Circuit Board - 5 Disassembly - 6 Diagnostic Program- 7 Schematic Diagrams- 12 Exploded View - 14 Parts List- 15 RadioFans.CN 收音

2、机爱 好者资料库 1 SPECIFICATIONS GENERAL Keyboard:61 standard-size keys, 5 octaves Tones:100 Polyphony:12 notes maximum (6 for certain tones) Auto Accompaniment Rhythm Patterns:100 Tempo:Variable (236 steps, = 20 to 255) Chords:2 fingering methods (CASIO CHORD, FINGERED) Rhythm Controller:START/STOP, SYNCH

3、RO/FILL-IN Accomp Volume:0 to 9 (10 steps) Song Bank Tunes:100 Controllers:PLAY/PAUSE, STOP, REW, FF, LEFT ON/OFF (ACCOMP), RIGHT ON/OFF (MELODY) Display Name display:TONE, RHYTHM, SONG BANK name/number, keyboard settings name/value Tempo:Tempo value, metronome, synchro standby, beat indicator, volu

4、me setting Chord:Chord name, Chord form Fingering:Fingering indicators, parts Song Bank Status:PLAY, PAUSE, REW, FF Staff:5 octaves with sharp and flat indications, pedal symbol, octave symbol Keyboard:5 octaves MIDI:5 multi-timbre receive Other Functions Transpose:12 steps (6 semitones to +5 semito

5、nes) Tuning:Variable (A4 = approximately 440Hz 50 cents) Volume:0 to 9 (10 steps) Terminals MIDI Terminals:IN, OUT Sustain Terminal:Standard jack Phones/Output Terminal:Stereo standard jack (Output is monaural.) Output Impedance: 78 Output Voltage: 4V (RMS) MAX Power Supply Terminal:9V DC Microphone

6、 In:Standard jack (with microphone volume knob) Input impedance: 40k Input sensitivity: 10mV Power Supply:Dual power supply system Batteries:6 AA-size batteries Battery Life:Approximately 4 hours continuous operation on alkaline batteries Approximately 2 hours continuous operation on manganese batte

7、ries AC Adaptor:AD-5 Auto Power Off:Turns power off approximately 6 minutes after last key operation. Enabled under battery power only, can be disabled manually. Speaker Output:2.0W + 2.0W Power Consumption:9V 7.7W Dimensions:95.6 35.4 13.2 cm (37 11/16 13 15/16 3 3/16 inch) Weight:Approximately 3.8

8、kg (8.4lbs) (without batteries) RadioFans.CN 收音机爱 好者资料库 2 ELECTRICAL Current drain with 9 V DC: No sound output86 mA 20 % Maximum volume650 mA 20 % with 13 keys C1 to C2 pressed in 60 Synth-Lead 1 Volume: Maximum, Velocity: Maximum Speaker output level (Vrms with 4 load each channel): with key C1 pr

9、essed in 60 Synth-Lead 11080 mV 20 % Phone output level (Vrms with 32 load each channel): with key F5 pressed in 60 Synth-Lead 1295 mV 20 % Output level (Vrms with 47 K load each channel): with key F2 pressed in 60 Synth-Lead 11250 mV 20 % 3 BLOCK DIAGRAM LCD Driver LSI201 ST7066U-OAQ DB4 DB7 SEG1 S

10、EG40 COM1 COM7 COM9 COM16 E P/W RS KI1 KI7 KO1 KO7 KOD8 KOD12 KID0 KID6 MPU LSI301 ML6756B24 OP AMP IC205 NE5532P DAO D/A Converter IC402 LA4227 Keyboard LCD MIC MIC VR Speakers (L)(R) MIDI INOUT Sustain Jack Buttons Power Switch OP AMP IC204NE5532P 4 CIRCUIT DESCRIPTION KEY MATRIX C2C3C4C5C6C7 BUTT

11、ON MATRIX KID5 VOLUME- DOWN CHORD BOOK RHYTHM POWER / MODE (NORMAL) REW KID6 VOLUME- UP ACCOMP. VOLUME TONE POWER / MODE (OFF) KID3 TEMPO DOWN START / STOP TRANSPOSE/ TUNE POWER / MODE (FINGERD) STOP KID4 TEMPO UP SYNCRO / FILL-IN SONG BANK POWER / MODE (CASIO CHORD) LEFT KID1 + 2 5 8 RIGHT KID2 0 1

12、 4 7 PLAY/PAUSE KOD8 KOD9 KOD10 KOD11 KOD12 KID0 - 3 6 9 FF KI0KI1KI2KI3KI4PI4PI5PI6PI7 KO0C2G2#E3C4G4# KO1C2#A2F3C4#A4 KO2D2A2#F3#D4A4# KO3D2#B2G3D4#B4 KO4E2C3G3#E4 KO5F2C3#A3F4 KO6F2#D3A3#F4# KO7G2D3#B3G4 PO0E5C6G6# PO1F5C6#A6 PO2F5#D6A6# PO3G5D6#B6 PO4C5G5#E6C7 PO5C5#A5F6 PO6D5A5#F6# PO7D5#B5G6 N

13、OMENCLATURE OF KEYS 5 PRINTED CIRCUIT BOARDS MAIN PCB M627-MAIN1 Keyboard PCBs M627-KEY1/KEY2 MIC JACK PCB M627-MAIN2MIC VOLUME PCB M627-MAIN3 PCB 6 DISASSEMBLY 1. Remove the battery cover and the batteries. 2. Remove the volume knob. 3. Remove 12 screws on the bottom of the product, and three lower

14、 plates. Note:Fix the screws in the right order when assembling each lower plate. 4. Remove 35 screws on the bottom of the product. Note:Fix the screws in the right order when assembling. Fix a screw here first. Fix a screw here first. Fix a screw here first. Fix a screw here first. LOWER PLATE 3 5.

15、 Remove the upper case. 7 Note: Pay attention to the position of the LED(D225) when assembling the upper case. Note: Be careful of the height of the LED (D225) when replacing it. 17.5 0.5 mm SOLDER SIDE COMPONENT SIDE 6. Remove four solders and two speakers. 7. Remove two screws and unsolder one con

16、nector (CN31), and then remove the M627-MAA2 and M627- MAA3 PCBs. White Orange Brown Connector (CN31) M627-MAA2 PCB M627-MAA3 PCB Blue 8 8. Unsolder two lead wires for the power source. Unsolder one connector (CN1) and then remove the M627-MAA1 PCB. Connector (CN1) M627-MAA1 PCB 9. Remove 21 screws

17、and the keys. 10. Remove five rubber keys on the keyboard. Note:The length of this one rubber key is different. Note:Push the rubber keys all the way in by tweezers when assembling. Make sure that they are tightly fixed. Power Cord (Black) Power Cord (Red) 9 11. Unlock 17 hooks and remove the M627-K

18、YA1 and M627-KY2 PCBs. Note: Make sure to lock all the hooks when assembling. M627-KYA1 PCBM627-KYA2 PCB 10 I Initial Setting 1. Connect an AC adaptor. 2. Connect a Sustain pedal. NOTE: If there is no pedal or MIDI cable, pedal or MIDI check can be skipped. I How to start diagnostic program 1. Press

19、 the “POWER” button while pressing the “0” and “START/STOP” buttons. DIAGNOSTIC PROGRAM TEST SONG BANK Message on LCD AD-5 SP-2 3 OK sound must be audible with the display as Message on LCD 3. ROM check 1 Press “2” button. OK sound must ne audible. 4. ROM Version check 1 Press “1” button. Pip sound

20、must be audible. 5. D/A check 1 Press “4” button. Minimum sine wave sound must be audible at center position. 2 Press “5” button. Middle sine wave sound must be audible at center position. 3 Press “6” button. Maximum sine wave sound must be audible at center position. OKSWIT ROM TEST ROM 0000 ROM OK

21、 627Vr100 MIN MID MAX I Diagnostic program 1. MODE Switch check 1 Set to “CONCERT CHORD” position. 2 Set to “FINGERED” position. 3 Set to “NORMAL” position. 2. SWITCH check 1 Press “0” button. 2 Press the buttons in the following order. TEST RHYTH TEST TONE TEST SONG BANK SWITCH 1 2 34 8 9 567302928

22、262725 13 10 11 12 161922 14172023 15182124 11 Message on LCD 6. MIDI check 1 Press “9” button. OK sound must ne audible. 7. PEDAL check 1 Press “RHYTHM” button. 2 Press “Sus PEDAL” button. 8. LCD check 1 Press “TONE” button. Pip sound must be audible. All characters turn on. 2 Press “TONE” button.

23、Pip sound must be audible. All characters turn off. 9. AC Adaptor check 1 Press “SONG BANK” button. OK sound must be audible. 10. APO check 1 Press “STOP” button. * Go out from TEST mode (Power off). * The LCD turns off. DIAGNOSTIC PROGRAM IS FINISHED. MIDI OK P=AC ADP PED OFF PED ON 12 SCHEMATIC DI

24、AGRAMS MAIN PCB M420-MAIN1/MIC JACK PCB M420-MAIN2/MIC VOLUME PCB M420-MAIN3 13 Keyboard PCBs M627-KEY1/KEY2 14 EXPLODED VIEW 9 1722 18 10 19 2 19 8 5 6 3 4 12 13 2314 11 1 16 15 R-1 R-2 R-5 R-5 R-4 R-4 R-3 21 7 R-5 27 2524 26 20 15 Notes:This parts list does not include the cosmetic parts, which pa

25、rts 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 with- out prior notice. 2.As for spare parts order and supply, refer to the GUIDEBOOK for Spare parts Supply, published s

26、eperately. 3.The numbers in item column correspond to the same numbers in drawing. PARTS LIST CTK-496 PARTS PRICE LIST CTK-496 NItemParts codeParts nameSpecificationQ Price Code RRemarks Main PCB N11016 3666PCB ASSY/MAATK-RJM503927*0011CVA ND2251010 7268LED1154HD-B5/7-901AAC J2041008 1222CONNECTORHD

27、C-052S-021AFC J203,2056932 5081CONNECTORJY-6314-01-0302ABC J2016932 5082CONNECTORJY-6316-01-0701ADC L2011005 7360COILR2318-RB53-8563961BBX L2021005 6228COILR2318-RB53-8563971ABX IC2036932 3623PHOTO COUPLERPC900V0NSZX1AFX VR2012775 0994VARIABLE REVN-D8AA03B531AAC Q3021007 9925TRANSISTORKTA1267GR-AT1A

28、AC Q202,2051007 9927TRANSISTORKTC3199GR-AT2AAC Q3041013 2122TRANSISTORKTD863GR-AT1AAC Keyboard PCB N21016 3667PCB ASSY/KYATK-RJM503929*0011BXC ND701-7611010 8141DIODE1SS133TP61AAX Keyboard unit 36922 2720KET SET/WHITEM312118*14APC 46922 2730KEY SET/WHITEM312118*21ARC 56922 2740KEY SET/BLACK 10PM1117

29、26-12AQC 66922 2750KEY SET/BLACK 5PM111726-21AHC N71016 3902RUBBER/KEYRJM503854-001V014ADB N81016 3903RUBBER/KEYRJM503855-001V011AFB Panel unit N91016 3946PLATE/DISPLAYRJM503799-001V011AEC N101016 3934RUBBER/KEY/ARJM503792-001V011ABC N111016 3931RUBBER/KEY/BRJM503793-001V011AAC N121016 3932RUBBER/KE

30、Y/CRJM503794-001V011ABC N131016 3942RUBBER/KEY/DRJM503795-001V011AAC N141016 3943RUBBER/KEY/ERJM503796-001V011ABC N151016 3944RUBBER/KEY/FRJM503797-001V011ACC N161016 3945RUBBER/KEY/GRJM503798-001V011AEC N171016 1407KNOB/SLIDERJM503803-001V011AAC 186927 0510CONTACT/SLIDECSB-08D1ADB 193831 1043SPEAKE

31、RS10JA13B2BEC N201016 3669COVER ASSY/BATTERYTK-M340884*0141AUB 211007 8118CONNECTORM440863-003V012ABC N221016 1408KNOB/ROTARYRJM503816-001V011AAC N231016 9838LCDTR3573N1AUC 246927 1080TERMINAL/BATTERY (+)M440112-11ABX 251000 8078TERMINAL/BATTERY (-)M440002A-11AAX 266927 1060TERMINAL/BATTERYM440676-1

32、2AAX 276927 1070TERMINAL/BATTERYM440677-13AAX Refurbish NR-11016 3933CASE/UPPERRJM503790-001V011BRC NR-21016 3668CASE ASSY/MIDDLETK-RJM503916*0011CNCExcept US NR-21016 4732CASE ASSY/MIDDLETK-RJM503916*0021CNCFor US NR-31016 3935PLATE/LOWER/ARJM503801-001V011AEC NR-41016 3936PLATE/LOWER/BRJM503802-00

33、1V012ABC R-56922 6920RUBBER/FOOTM41361-65AAC Accessories -6920 8690STAND/MUSICM311760-11ALC -1008 3548BATTERYR6UW/2STA3ACCOnly DI Notes: N- New parts Q-Quantity used per unit - 16 - CASIO TECHNO CO.,LTD. Overseas Service Division 6-2, Hon-machi 1-Chome Shibuya-ku, Tokyo 151-8543, Japan Ver.1 :Feb. 2005 Correction of the EXPLODED VIEW (P14)