Casio_CTK-501_Service_Manual电路图.pdf

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1、ELECTRONIC KEYBOARD CTK-501 CTK-501 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 100 SONG BANNK100 TONES 100 RHYTHMS POWER/MODEMAIN VOLUMETEMPO MUSICAL INFORMATION SYSTEM TONE RHYTHM SONG BANK STATUS TEMPO MAIN VOLUME FINGERING/PART LEFT/ ACCOMP

2、 RIGHT/ MELODY :1 OCTAVE UP :PEDAL(SUSTAIN) 100 SONG BANNK KEYBOARD MUSICAL INFORMATION SYSTEM ON OFF FINGERED SYNCHRO/ FILL-IN CHORD BOOKTONE Mm M7dimaug 7 sus4-5add9 CLEAR0 123 456 789 RHYTHM STOP REW LEFTRIGHT ON/OFF PLAY/ PAUSE FF SONG BANK TRANSPOSE/ TUNE/MIDI ACCOMP VOLUME START/ STOP CASIO CH

3、ORD NORMAL SONG BANK CONTROLLER SONG BANK CONTROLLER RadioFans.CN 收音机爱 好者资料库 CONTENTS Specifications. 1 Block Diagram. 2 Circuit Description. 3 Adjustment . 7 Major Waveforms . 8 Printed Circuit Boards . 9 Schematic Diagrams . 11 Exploded View . 16 Parts List . 17 RadioFans.CN 收音机爱 好者资料库 1 ELECTRICA

4、L Current drain with 9 V DC: No sound output120 mA 20% Maximum volume750 mA 20% with 12 keys C1 to B1 pressed in Synth-Lead 1 Volume: Maximum Phone output level (Vrms with 8 load each channel): with key G2 pressed in Synth-Lead 178 mV 20% Speaker output level (Vrms with 4 load each channel): with ke

5、y G1 pressed in Synth-Lead 11250 mV 20% Minimum operating voltage:6.0 V 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 method

6、s (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 information Name display:TONE, RHYTHM, SONG BANK name/number Tempo:Tempo value, metronome, synchro

7、standby, beat indicator Chord:Chord name, Chord form Fingering:Fingering indcators, parts, pedal Song bank status:PLAY, PAUSE, REW, FF Staff:5 octaves with sharp and flat indications Keyboard:5 octaves MIDI:5 multi-timbre receive Other functions Transpose:12 steps (6 semitones to +5 semitones) Tunin

8、g:Variable (A4 = approximately 440 Hz 50 cents) Volume:0 to 9 (10 steps) Terminals MIDI terminals:IN, OUT Sustain terminal:Standard jack Phones/Output terminal:Stereo standard jack Output Impedance: 78 Output Voltage: 4 V (RMS) MAX Power supply terminal:9 V DC Power supplyDual power supply system Ba

9、tteries:Six D-size batteries Battery life:Approximately 10 hours on manganese batteries AC adaptor:AD-5 Auto power off:Turns power off approximately six minutes after last key operation. Enabled under battery power only, can be disabled manually. Speaker output:2.0 W + 2.0 W Power consumption:9 V -

10、7.7 W Dimensions (HWD):961 381 139 mm (37-7/8 15-1/16 5-1/2 inches) Weight:Approximately 5.4 kg (11.91 lbs) (without batteries) RadioFans.CN 收音机爱 好者资料库 2 BLOCK DIAGRAM CPU MSM 6755B-17 LSI2 KeyboardButtons LCD LCD Driver SED1278F0A LSI3 Reset IC IC1 Oscillator X1, Q1 Power Supply Circuit Q201 Q203,

11、Q208, D205 Power Amp. TA8248K IC201 Filter (L) Q206 Filter (R) Q205 Output VCVCCDVDD APO DC + 9V IN DB4 DB7 MIDI IN MIDI OUT COM1 COM16 SEG1 SEG40 RS R/W E KO8 KO12 KI0 KI6 KO0 KO7 MD0 MD7 MA0 MA18 ROM(2M-bit) LC372100PM- G48 LSI1 3 CIRCUIT DESCRIPTION KEY MATRIX F#3 G#3 A#3C#4 D#4F#4 G#4 A#4 C#5 D#

12、5F#5G#5 A#5 F3G3A3B3C4D4E4F4G4A4B4C5D5E5F5G5A5B5C6 D#3 C2D2E2F2G2A2B2C3D3E3B6A6G6F6E6D6C7 C#3A#2G#2F#2D#2C#2A#6G#6F#6D#6C#6 NOMENCLATURE OF KEYS KI0KI1KI2KI3KI4KI5KI6KI7 KO0C2G#2E3C4G#4E5C6G#6 KO1C#2A2F3C#4A4F5C#6A6 KO2D2A#2F#3D4A#4F#5D6A#6 KO3D#2B2G3D#4B4G5D#6B6 KO4E2C3G#3E4C5G#5E6C7 KO5F2C#3A3F4C#

13、5A5F6 KO6F#2D3A#3F#4D5A#5F#6 KO7G2D#3B3G4D#5B5G6 KO8+0 KO9321 KO1065 4RhythmTone KO11987FingeredNormalOff KO12FFRightStopLeftREW Tempo Down Tempo Up Start/ Stop Synchro/ Fill-In Chord Book Accomp Volume Transpose/ Tune/MIDI Song Bank CASIO Chord Play/ Pause Volume Down Volume Up 4 CPU (LSI2: MSM6755

14、B-17) The CPU reads sound data from the ROM in accordance with the pressed 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 t

15、wo built-in DACs. The CPU also controls key and button input. The following table shows the pin functions of LSI2. 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

16、 30DGNDInGround (0 V) source 31DVCCIn+5 V source 32, 33XTLO, XTLIIn/Out20 MHz clock input/output 34NC3Not used 35RSTBInReset signal input 36P24/RXDInMIDI signal input 37P25/TXDOutMIDI signal output 38NMIInPower ON signal input. Connected to +5 V. 39APOOutAPO (Auto Power Off) signal output 40NC4Not u

17、sed 41REFHOutTerminal for the internal DAC 42, 43NC5, NC6Not used 44DAOROutRight channel sound waveform 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 50

18、AGadcInGround source for internal ADC 51ANIInAPO cancellation signal 52AVadcIn+5 V source for the internal ADC 53NC8Not used 54MOD0InMode selection terminal. Connected to +5 V. 55, 56MOD1, MOD2InMode selection terminal. Connected to ground. 57P40InPedal signal input 58 64KI0/P30 KI7/P36InTerminals f

19、or key/button input signal 65KI7/P37Not used 66 73KO0/P50 KO7/P57OutTerminals for key scan signal 5 LCD DRIVER (LSI3: SED1278F0A) 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

20、80 characters in the built-in display 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 74 77DB4 DB7OutData bus for the LCD driver 78NC9Not used 79

21、LVCCIn+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 95P73 P77Not used 96LGNDInGround source 97, 100MA18, MA15OutAddress bus Pin No.

22、TerminalIn/OutFunction 1 22, 63 80 23VSSGND (0 V) source Terminals for the built-in clock pulse generator. The external 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,

23、 32LP, XCLSNot used 33VDDInDVDD (+5 V) source 34, 35FR, DONot used 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

24、to GND (0 V) 43 46DB4 DB7In/OutData bus 47 62COM1 COM16OutCommon signal/output SEG1 SEG40OutSegment signal output 24, 25OSC1, OSC2In/Out 36RSIn 6 FILTER BLOCK Since the sound signals from the CPU is stepped waveforms, the filter block is added to smooth the waveforms. POWER AMPLIFIER (IC201: TA8248K

25、) The power amplifier is a two-channel amplifier with standby switch. The following table shows the pin function of IC201. Pin No.TerminalIn/OutFunction 1NCNot used 2B.S.2Terminal for a bootstrap capacitor 3OUT2OutChannel 2 output 4VCCIn+9 V source 5OUT1OutChannel 1 output 6B.S.1Terminal for a boots

26、trap capacitor 7Power GNDInGround (0 V) source 8Stand byInPower control signal input. 0 V: Off, +9 V: On 9DCTerminal for a decoupling capacitor 10NF1InNegative feedback input 11IN1InChannel 1 input 12IN2InChannel 2 input 13NF2InNegative feedback input 14, 15Pre GNDInGround (0 V) source Amp. TA8248K

27、Filter Block CPU MSM6755B-17 7 Output SetVoltmeter R62 3) Equipment connection/Procedure Vop voltage setting Input Connection Input Point Input Signal Adjust Output Connection Output Point Adjust for VR1VoltmeterR62Adjust for 4.4 0.1 V reading on voltmeter. Make fine adjustment accord- ing to the ne

28、xt instruction. Watching the LCD at a 37 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) ItemMeasuring Instrument Vop voltage settingVoltmeter 37 LCD Eye Test point

29、 8 MAJOR WAVEFORMS 1 Clock pulse MSM6755B-17 pin 32 1 2 Power source DVDD JC connector pin 8 3 APO signal JC connector pin 2 2 3 4 Sound waveform (R-ch) Tone:Whistle (59) JC connector pin 5Key:A4 5 Sound waveform (L-ch) Volume: Max. JC connector pin 4 4 5 6 Button scan signal KO0 MSM6755B-17 pin 66

30、7 Button scan signal KO1 MSM6755B-17 pin 67 6 7 8 LCD common signal COM9 SED1278F0A pin 55 9 LCD common signal COM10 SED1278F0A pin 56 8 9 9 PRINTED CIRCUIT BOARDS Main PCB JCM443-MA1M Top View Bottom View 52134 8 9 67 11 SCHEMATIC DIAGRAMS Main PCB JCM443-MA1M 1 76 2 3 4 5 9 8 12 Sub PCB JCM443-MA2

31、M 13 Console PCBs JCM443-CN1M/CN2M 14 Keyboard PCBs JCM6112K-KY1M/KY2M 15 LCD Common Segment COM7 COM6 COM5 COM4 COM3 COM2 COM1 SEG1 SEG2 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 C

32、OM11 COM12 SEG39 SEG40 COM10 COM9 COM14 COM15 COM16 SEG11 SEG12 SEG13 SEG14 SEG15 SEG16 SEG17 SEG18 SEG19 SEG20 SEG21 SEG22 SEG23 SEG24 SEG25 SEG6 COM16 COM15 COM14 COM13 COM12 COM11 COM10 COM9 COM16 COM15 COM14 COM13 COM7 COM6 COM5 COM4 COM3 COM2 COM1 SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 SEG7 SEG8 SEG9 SE

33、G10 SEG21 SEG22 SEG23 SEG24 SEG25 SEG26 SEG27 SEG28 SEG29 SEG30 SEG31 SEG32 SEG33 SEG34 SEG35 SEG36 SEG37 SEG38 SEG39 SEG40 COM11 COM12 SEG39 SEG40 COM10 COM9 COM14 COM15 COM16 SEG11 SEG12 SEG13 SEG14 SEG15 SEG16 SEG17 SEG18 SEG19 SEG20 SEG21 SEG22 SEG23 SEG24 SEG25 SEG6 COM16 COM15 COM14 COM13 COM1

34、2 COM11 COM10 COM9 COM16 COM15 COM14 COM13 16 EXPLODED VIEW 13 13 16 17 18 19 20 21 15 22 23 R-1 R-2 2 4 3 1 6 5 8 7 9 14 10 12 11 R-3 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 n

35、eed 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 seperately. 3.The numbers in item column correspond to the same numbers in drawing. PARTS LIST CTK-

36、501 ItemCode No.Parts NameSpecificationQR Main PCB 16926 0460PCB/ASSY (MA1M)M240626*11 B LSI12012 5638LSI/MASK-ROMLC372100PM-G48TE-L1 A LSI22012 5603LSI/MCMSM6755B-171 A LSI32012 5569LSI/LCD DRIVERSED1278F0A1 A IC12012 1883IC/MOSRN5VD40AA-TR1 B Q12252 1239TRANSISTOR2SC4081T106Q1 B VR12775 3286POTENT

37、IOMETEREVM3SSX50B531 B X12590 2100OSCILLATOR/CERAMICCSACS20.00MX040-TC1 B Sub PCB 26926 0410PCB/ASSY (MA2M)M140572*11 B IC2012114 5775IC/LINEAR (POWER AMP.)TA8248K1 A IC2022114 1421IC/PHOTO COUPLERPC900V1 B Q2012250 0168TRANSISTOR2SA854-SR-TP-T1 A 2220 1409TRANSISTOR2SC1740SR-TP-T6 B Q2032251 0921TR

38、ANSISTOR2SB1240R-TV2-T1 A D2012390 1323DIODE/SHOTTKYRB100A-T32-T1 B 2390 1344DIODE1SS133T-77-T5 C D2042390 3018DIODE1T21 C D2052360 1939DIODE/ZENERMTZJ5.1C-T77-T1 A J2013501 7049JACK (POWER)HEC2305-01-3301 A J2023612 0665JACK (PHONE)YKB21-50061 B J2033612 0789JACKYKB21-50101 B J2043501 4816JACK/DINY

39、KF51-50511 B Console PCBs 36926 0440PCB/ASSY (CN1M)M240623*11 C D302 - D3062390 1344DIODE1SS133T-77-T5 B LED3012370 1383LEDTLR124(TPJ56,KT)1 B 46926 0450PCB/ASSY (CN2M)M240624*11 C D310 - D3162390 1344DIODE1SS133T-77-T7 B Keyboard PCBs 56926 0490PCB/ASSY (KY1M)M240628*11 B D701 - D7322390 1344DIODE1

40、SS133T-77-T32 B 66926 0500PCB/ASSY (KY2M)M240629*11 B D733 - D7612390 1344DIODE1SS133T-77-T29 B Keyboard unit 76922 2720KEY SET/LT WHITEM312118*14 A 86922 2730KEY SET/LT WHITEM312118*21 A 96906 8481KEY SET/LT BLACK 10PM140369A-32 A 106906 8491KEY SET/LT BLACK 5PM140369A-41 A 116926 0670RUBBER/CONTAC

41、TM240549-14 A 126926 0680RUBBER/CONTACTM240550-11 A Panel unit 133831 0833SPEAKERS12J49A2 B 143335 6566LCDLD-B10114A1 B 156926 0270RUBBER/INTERCONNECTORM440435-22 B 166921 5031KNOBM311859A-11 B 176909 5890SWITCH/SLIDE KONBCSB-12D1 B 186926 0590RUBBER/BUTTONM140524-11 B 196926 0600RUBBER/BUTTONM240560-11 B 206926 0610RUBBER/BUTTONM240561-11 B 216926 0620RUBBER/BUTTONM140525-11 B 226926 0650PANEL/DISPLAYM240574-11 C 236906 8647COVER/BATTERYM311164G*131 B Notes: