Casio_CTK-411_Service_Manual电路图.pdf

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1、ELECTRONIC KEYBOARD CTK-411 CTK-411 MIDI 100 SONG BANK KEYBOARD MUSICAL INFORMATION SYSTEM SONG BANK CONTROLLER POWER/MODE ON OFF FINGERED MAIN VOLUME SYNCHRO/ FILL-IN START/ STOPTEMPOCHORD BOOK ACCOMP VOLUME CASIO CHORD NORMAL M 01234 56789 m7M7dim TONE RHYTHM SONG BANK STATUS MAIN VOLUME TEMPO aug

2、sus4-5add9CLEARRHYTHMTRANSPOSE/ TUNE/MIDI LEFT ON/OFF RIGHT ON/OFF REWSTOPFFTONESONG BANK P L A Y / P A U S E SONG BANK CONTROLLER MUSICAL INFORMATION SYSTEM OUTIN OUTPUT PHONES/DC 9V RadioFans.CN 收音机爱 好者资料库 INDEX CONTENTS Specifications. 1 Block Diagram. 2 Circuit Description. 3 Adjustment . 7 Majo

3、r Waveforms . 8 Printed Circuit Boards . 9 Schematic Diagrams . 10 Exploded View . 14 Parts List . 15 RadioFans.CN 收音机爱 好者资料库 1 SPECIFICATIONS GENERAL Keyboard:49 standard-size keys, 4 octaves Tones:100 Polyphony:12 notes maximum (6 for certain tones) Auto accompaniment Rhythm patterns:100 Tempo:Var

4、iable (236 steps, = 20 to 255) Chords:2 fingering methods (CASIO CHORD, FINGERED) Rhythm controller:START/STOP, SYNCHRO/FILL-IN Accomp volume:0 to 9 (10 steps) Song bank Tunes:100 Controllers:PLAY/PAUSE, STOP, REW, FF, LEFT ON/OFF, RIGHT ON/OFF Musical dictionary Name display:TONE, RHYTHM, SONG BANK

5、 name/number, keyboard settings name/value Tempo:Tempo value, metronome, synchro standby, beat indicator Chord:Chord name, Chord form Fingering:Fingering indicators, parts, pedal (The pedal indicator is for received MIDI data only.) Song bank status:PLAY, PAUSE, REW, FF Staff:4 octaves with sharp an

6、d flat indications Keyboard:4 octaves MIDI:5 multi-timbre receive Other functions Transpose:12 steps (6 semitones to +5 semitones) Tuning:Variable (A4 = approximately 440 Hz 50 cents) Volume:0 to 9 (10 steps) Terminals MIDI terminals:IN, OUT Phones/Output terminal:Stereo standard jack (Output is mon

7、aural.) Output Impedance: 60 Output Voltage: 5 V (RMS) MAX Power supply terminal:9 V DC Power supplyDual power supply system Batteries:6 AA-size batteries Battery life:Approximately 2 hours (SUM-3/R6P)/4 hours (AM3/LR6) AC adaptor:AD-5 Auto power off:Turns power off approximately six minutes after l

8、ast key operation. Can be disabled manually. Speaker output:3.0 W (Output is monaural.) Power consumption:9 V - 7.5 W Dimensions (HWD):958 310 132 mm (37-3/4 12-3/16 5-3/16 inches) Weight:Approximately 3.5 kg (7.7 lbs) (without batteries) ELECTRICAL Current drain with 9 V DC: No sound output95 mA 20

9、 % Maximum volume680 mA 20 % with 12 keys C4 to B4 pressed in Synth-Lead 1 Volume: 9 (Max.) Phone output level (Vrms with 8 load each channel): with key A4 pressed in Synth-Lead 195 mV 20 % Speaker output level (Vrms with 4 load each channel): with key C4 pressed in Synth-Lead 11050 mV 20 % Output l

10、evel (Vrms with 47 K load each channel): with key C1 pressed in Synth-Lead 11100 mV 20 % Minimum operating voltage:5.7 V RadioFans.CN 收音机爱 好者资料库 2 BLOCK DIAGRAM CPU MSM 6755C-17 LSI1 KeyboardButtons LCD LCD Driver KS0066U-10B LSI3 Reset IC IC1 Oscillator X1, Q1 Power Supply Circuit Q101 Q103, D104 P

11、ower Amp. LA4598 IC101 Filter Q105 Speaker (L) Speaker (R) Phones/Output VCAVDDVCCDVDD APO MD0 MD7 MA0 MA17DC + 9 V IN DB4 DB7 COM1 COM16 SEG1 SEG40 RS R/W E KO8 KO12 KI0 KI6 KO0 KO7 ROM(2M-bit) UM23C2101M 7384/Q LSI2 Power Switch 3 KI0KI1KI2KI3KI4KI5KI6 KO0C2G#2E3C4G#4E5C6 KO1C#2A2F3C#4A4F5 KO2D2A#

12、2F#3D4A#4F#5 KO3D#2B2G3D#4B4G5 KO4E2C3G#3E4C5G#5 KO5F2C#3A3F4C#5A5 KO6F#2D3A#3F#4D5A#5 KO7G2D#3B3G4D#5B5 KO8+0 TempoTempoVolumeVolume DownUpDownUp KO9321 Start/Synchro/ChordAccomp StopFill-inBookVolume KO10654 Transpose/Song RhythmTone TuneBank KO1198 7 FingeredCASIONormalPower Off Chord KO12FFRight

13、 Play/ StopLeftRewind Pause CIRCUIT DESCRIPTION KEY MATRIX NOMENCLATURE OF KEYS C2 C#2D#2F#2 G#2A#2C#3D#3F#3 G#3A#3C#4D#4F#4 G#4A#4C#5D#5F#5 G#5A#5 D2E2F2G2A2B2C3D3E3F3G3A3B3C4D4E4F4G4A4B4C5D5E5F5G5A5B5C6 4 CPU (LSI1: MSM6755C-17) The CPU reads sound data from the ROM in accordance with the pressed

14、key and the selected tone; the CPU can read rhythm data simultaneously when a rhythm pattern is selected. Then it provides the left and the right channels waveforms separately, by converting the data into the waveforms with two built-in DACs. The CPU also controls key and button input. The following

15、 table shows the pin functions of LSI1. Pin No.TerminalIn/OutFunction 1MA14OutAddress bus 2, 3NCONot used 4 19MA0 MA13OutAddress bus 13MRDBOutRead enable signal 17MCSBNot used 20 27MD0 MD7In/OutData bus 28, 29NC1, NC2Not used 30DGNDInGround (0 V) source 31DVCCIn+5 V source 32, 33XTLO, XTLIIn/Out20 M

16、Hz clock input/output 34NC3Not used 35RSTBInReset signal input 36P24/RXDMIDI signal input 37P25/TXDMIDI signal output 38NMIInPower ON signal input. Connected to +5 V. 39APOOutAPO (Auto Power Off) signal output 40NC4Not used 41REFHOutTerminal for the internal DAC 42, 43NC5, NC6Not used 44DAOROutSound

17、 waveform signal output 45NC7Not used 46AVdacIn+5 V source for the internal DAC 47DAOLOutLeft channel sound waveform output 48REFLOutTerminal for the internal DAC and ADC 49AGdacInGround source for internal DAC 50AGadcInGround source for internal ADC 51ANIInNot used 52AVadcIn+5 V source for the inte

18、rnal ADC 53NC8Not used 54MOD0InMode selection terminal. Connected to +5 V. 55, 56MOD1, MOD2InMode selection terminal. Connected to ground. 57P40Not used 58 64KI0/P30 KI7/P36InTerminals for key/button input signal 65KI7/P37Not used 66 73KO0/P50 KO7/P57OutTerminals for key scan signal 5 Pin No.Termina

19、lIn/OutFunction 74 77DB4 DB7OutData bus for the LCD driver 78NC9Not used 79LVCCIn+5 V source 80 84KO8 KO12OutTerminals for button scan signal 85 87P65 P67Not used 88RSOutControl signal for the LCD driver 89R/WOutRead/Write signal for the LCD driver 90EOutChip enable signal for the LCD driver 91 95P7

20、3 P77Not used 96LGNDInGround source 97, 100MA18, MA15OutAddress bus LCD DRIVER (LSI3: KS0066U-10B) The LCD driver can drive a dot matrix LCD having 40 segment and 16 common lines. The LSI contains 240 graphic symbols in the built-in character generator ROM, and stores 80 characters in the built-in d

21、isplay data RAM. In accordance with command from the CPU, the LSI is capable of displaying up to 16 characters simultaneously. The following table shows the pin functions of LSI3. Pin No.TerminalIn/OutFunction 1 22, SEG1 SEG40OutSegment signal output 63 80 23VSSGND (0 V) source Terminals for the bui

22、lt-in clock pulse generator. The 24, 25OSC1, OSC2In/Outexternal resistor connected determines the oscillation frequency. LCD drive voltage input. 26 30V1 V5InThose voltages are used for generating the stepped pulse of the LCD drive signals. 31, 32LP, XCLSNot used 33VDDInDVDD (+5 V) source 34, 35FR,

23、DONot used 36RSIn Data/command determination terminal. High: data, Low: command 37R/WInRead/Write terminal. High: read, Low: write Chip enable signal. 38EInHigh: enable, the writing is done at fall edge. Low: disenable 39 42DB0 DB3Not used. Connected to GND (0 V) 43 46DB4 DB7In/OutData bus 47 62COM1

24、 COM16OutCommon signal/output 6 FILTER BLOCK Since the sound signals from the CPU is stepped waveforms, the filter block is added to smooth the waveforms. POWER AMPLIFIER (IC101: LA4598) The power amplifier is a two-channel amplifier with standby switch. The following table shows the pin function of

25、 IC101. Amp. LA4598 Filter Block CPU MSM6755C-17 Pin No.TerminalIn/OutFunction 1Power GNDInGround (0 V) source 2Ch1 B.S.Terminal for a bootstrap capacitor 3Ch1 OUTOutChannel 1 output 4VCCIn+9 V source 5Ch1 N.F.InNegative feedback input 6Ch1 INInChannel 1 output 7D.CTerminal for a bootstrap capacitor

26、 8Pre GNDInGround (0 V) source 9Stand byInPower control signal input. 0 V:Off, +9 V: On 10Ch2 INInNot used. Connected to ground (0 V) 11Ch2 N.F.InNegative feedback input 12Ch2 OUTOutChannel 2 output 13Ch2 B.S.Terminal for a bootstrap capacitor 14NCNot used 7 ItemMeasuring Instrument Vop voltage sett

27、ingVoltmeter 3) Equipment connection/Procedure Vop voltage setting Input Connection Input Point Input Signal Adjust Output Connection Output Point Adjust for VR1VoltmeterTP1Adjust for 4.1 4.0 V reading on voltmeter under the temparature 20 25 C. Make fine adjustment ac- cording to the following in-

28、struction. Watching the LCD at a 36.6 angle to the horizontal, adjust Vop voltage so that unenergized segments are seen dimly. ADJUSTMENT MAIN PCB 1) Items to be adjusted: 2) Adjustment and Test Point Locations (TOP VIEW) Output SetVoltmeter TP1 36.6 LCD Eye (BOTTOM VIEW) TP1 VR1 8 MAJOR WAVEFORMS 1

29、 Clock pulse MSM6755C-17 pin 32 1 2 +5 V source DVDD JB connector pin 4 3 APO signal JB connector pin 8 2 3 4 Button scan signal KO6 JA connector pin 14 5 Button scan signal KO7 JA connector pin 15 4 5 6 LCD common signal COM9 KS0066U-10B pin 55 7 LCD common signal COM10 KS0066U-10B pin 56 6 7 9 Top

30、 View PRINTED CIRCUIT BOARDS Main PCB JCM444-MA1M Bottom View 3 2 76 4 5 1 10 SCHEMATIC DIAGRAMS Main PCB JCM444-MA1M 1 54 2 3 7 6 11 Sub PCBs JCM444-MA2M/MA3M 12 Keyboard PCBs JCM4911K-KY1M/KY2M 13 LCD SegmentCommon COM7 COM6 COM5 COM4 COM3 COM2 COM1 SEG2 COM11 COM12 SEG39 SEG40 COM10 COM9 COM14 CO

31、M15 COM16 SEG11 NC NC NC COM16 SEG3 SEG4 SEG5 SEG6 SEG7 SEG8 SEG9 SEG10 SEG21 SEG22 SEG23 SEG24 SEG25 SEG26 SEG27 SEG28 SEG29 SEG30 SEG31 SEG32 SEG33 SEG34 SEG35 SEG36 SEG37 SEG38 SEG39 SEG40 SEG1 SEG12 SEG13 SEG14 SEG15 SEG16 SEG17 SEG18 SEG19 SEG20 SEG21 SEG22 SEG23 COM15 COM14 COM13 COM12 COM11 C

32、OM10 COM9 COM16 COM15 COM14 COM13 COM7 COM6 COM5 COM4 COM3 COM2 COM1 SEG2 COM11 COM12 SEG39 SEG40 COM10 COM9 COM14 COM15 COM16 SEG11 NC NC NC COM16 SEG3 SEG4 SEG5 SEG6 SEG7 SEG8 SEG9 SEG10 SEG21 SEG22 SEG23 SEG24 SEG25 SEG26 SEG27 SEG28 SEG29 SEG30 SEG31 SEG32 SEG33 SEG34 SEG35 SEG36 SEG37 SEG38 SEG

33、39 SEG40 SEG1 SEG12 SEG13 SEG14 SEG15 SEG16 SEG17 SEG18 SEG19 SEG20 SEG21 SEG22 SEG23 COM15 COM14 COM13 COM12 COM11 COM10 COM9 COM16 COM15 COM14 COM13 14 EXPLODED VIEW 18 6 14 13 15 R-1 5 8 79 10 11 12 1 2 19 4 17 16 4 R-3 R-5 3 R-4 R-2 Notes:This parts list does not include the cosmetic parts, whic

34、h 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 with- out prior notice. 2.As for spare parts order and supply, refer to the GUIDEBOOK for Spare parts Supply, publish

35、ed seperately. 3.The numbers in item column correspond to the same numbers in drawing. PARTS LIST CTK-411 ItemCode No.Parts NameSpecificationQR Main PCB 16926 7070PCB/ASSY (MA1M)M240832*11B LSI12012 5603LSI/MC (CPU)MSM6755B-171A LSI22012 5611LSI/MASK-ROMUM23C2101M-7384/Q1A LSI32012 5935LSI/LCD DRIVE

36、RKS0066U-10B1A IC12012 1883IC/MOS (RESET IC)RN5VD40AA-TR1B Q1,Q22252 1239TRANSISTOR/CHIP2SC4081T106Q2C Q32250 1169TRANSISTOR/CHIP2SA1576AT106S1C VR12775 0994POTENTIOMETEREVN-D6AA03B531C X12590 2100OSCILLATOR/CERAMICCSACV20.00MX040-TC1C Sub PCB 26926 7060PCB/ASSY (MA2,3M)M140748*11B IC1012114 2891IC/

37、LINEAR (POWER AMP)LA45981A IC1022252 1248IC/PHOTOCOUPLERHCPL-261A1B Q1012250 1585TRANSISTOR2SD1858TV2Q1C Q1022250 0168TRANSISTOR2SA854SR-TP-T1C Q103 - Q1052220 1409TRANSISTOR2SC1740SR-TP-T3C D1012390 1323DIODE/SHOTTKYRB100A-T32-T1X D1022390 3018DIODE1T21X D1032360 2044DIODE/ZENERMTZJ6.2A-T77-T1C D10

38、4 - D1132390 1344DIODE1SS133T-77-T11 X J1013612 0665JACK/PHONEYKB21-50061C J1023501 7049JACK/POWERHEC2305-01-3301C J1033501 4816JACK/DINYKF51-50511C Keyboard PCBs 36926 7050PCB/ASSY (KY1,2M)M140749*11C D701 - D7492301 0101DIODE1S2473T-77-T49 X Mechanical Parts 43831 0665SPEAKER10G42AFA2B 53335 6691L

39、CDLD-B10272A1B 66926 7200RUBBER/INTERCONNECTORM440584-22C 76909 5890SWITCH/SLIDECSB-12D1C 86921 5031KNOBM311859-11C 96926 7210RUBBER/BUTTONM240796-11C 106926 7220RUBBER/BUTTONM240797-11C 116926 7230RUBBER/BUTTONM240798-11C 126926 7240RUBBER/BUTTONM240799-11C 136922 2720KEY SET/LT WHITEM312118*13B 14

40、6922 2730KEY SET/LT WHITEM312118*21B 156922 2740KEY SET/LT BLACK 10PM111726-12B 166906 9191RUBBER/CONTACTM240549A-23C 176906 9201RUBBER/CONTACTM240550A-21C 186926 7270PANEL/DISPLAYM340789-11C 196925 4500COVER/BATTERYM340528*11C Accessory 6926 7290STAND/NOTEM140719-11C Notes: Q Quantity per unit R Rank 15 CASIO TECHNO CO.,LTD. Overseas Service Division 8-11-10, Nishi-Shinjuku Shinjuku-ku, Tokyo 160-0023, Japan