Casio_MA-100_Service_Manual电路图.pdf

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1、ELECTRONIC KEYBOARD MA-100 MA-100 100 TONES KEYBOARD 00 PIANO 01 ELEC PIANO 02 FUNKY CLAVI 03 HARPSICHORD 04 ELEC ORGAN 05 JAZZ ORGAN 06 PIPE ORGAN 07 CHURCH ORGAN 08 STREET ORGAN 09 ACCORDION WIND 10 SAMBA WHISTLE 11 WHISTLE 12 QUENA 13 FLUTE 14 FLUTE-VIB 15 OCARINA 16 BAGPIPE 17 HARMONICA 18 CHORU

2、S 19 BRASS-STRINGS STRING 20 WARM STRINGS 21 STRINGS 22 VIOLIN 23 VIOLIN-VIB 24 CELLO 25 ELEC GUITAR 26 JAZZ GUITAR 27 MUTE GUITAR 28 METAL GUITAR 29 SLAP BASS 30 ELEC BASS 31 WOOD BASS 32 SNARE BASS 33 MANDOLIN 34 BANJO 35 SITAR 36 UKULELE 37 HARP 38 TAISHOKOTO 39 SHAMISEN BRASS 40 BRASS ENS 41 WAR

3、M BRASS 42 TRUMPET 43 TUBA 44 BRASS HIT 45 WIND ENS 46 ENGLISH HORN 47 OBOE 48 BASSOON 49 CLARINET MODE POWER OFFFINGERED NORMALCASIO CHORD VOLUME MINMAX PERCUSSION 50 VIBRAPHONE 51 MARIMBA 52 CHURCH BELLS 53 BELLS 54 TOM 55 ROCK DRUM 56 SWING DRUM 57 TRIANGLE 58 SAMPLE PERCUSSION 59 MATSURI TEMPO S

4、YNTH-SOUND 60 SYNTH-CELESTA 61 SYNTH-CLAVI 62 SYNTH-ACCORDION 63 SYNTH-PIANO 64 SYNTH-BRASS 65 SYNTH-REED 66 SYNTH-LEAD 67 SYNTH-GUITAR 68 SYNTH-STRINGS 69 SYNTH-BASS 70 GRASS HARMONICA 71 FANTASY 72 WAW VOICE 73 TWINKLE ECHO 74 METAL LEAD 75 PLUNK EXTEND 76 COSMIC DANCE 77 CATHEDRAL 78 POP LEAD 79

5、PEARL DROP SOUND EFFECT 80 AIRPLANE 81 AMBULANCE 82 INSECT 83 EMERGENCY ALARM 84 LASER BEAM 85 COSMIC SOUND 86 TELEPHONE 87 CAR HORN 88 COMPUTER SOUND 89 MOTORCYCLE KEYBOARD SPLIT 90 BASS/VIBRAPHONE 91 BASS/PIANO 92 BASS/TRUMPET 93 BASS/SYNTH-LEAD 94 BASS/ELEC ORGAN 95 STRINGS/BRASS 96 CHORUS/BELLS

6、97 BRASS/SYNTH-REED 98 PIANO/FLUTE 99 STRINGS/OBOE TONE/RHYTHM SELECTTONE POLY/TEXTURE43210 98765 RHYTHMDEMOFILL-INSTART/ STOP ROCK 00 ROCK 1 01 ROCK 2 02 HARD ROCK 1 03 HARD ROCK 2 04 HARD ROCK 3 05 HEAVY METAL 1 06 HEAVY METAL 2 07 8 BEAT 1 08 8 BEAT 2 09 8 BEAT 3 100 RHYTHMS 16 BEAT 10 16 BEAT 1

7、11 16 BEAT 2 12 16 BEAT 3 13 16 BEAT 4 14 16 BEAT 5 15 16 BEAT 6 16 16 BEAT 7 17 16 BEAT 8 18 LATIN 16 BEAT 1 19 LATIN 16 BEAT 2 DISCO 20 70S DISCO 21 EURO-BEAT 1 22 EURO-BEAT 2 23 EURO-BEAT 3 24 EURO-BEAT 4 25 HIP-HOP 1 26 HIP-HOP 2 27 HIP-HOP 3 28 TECNO-POP 1 29 TECNO-POP 2 DISCO 30 FUNK 1 31 FUNK

8、 2 32 FUNK 3 33 FUNK 4 34 FUNK 5 35 FUNK 6 36 FUNK 7 37 FUNK 8 38 FUNK 9 39 FUNK 10 POPS 40 POPS 1 41 POPS 2 42 POPS 3 43 POPS 4 44 POPS 5 45 30 POPS 46 60 POPS 1 47 60 POPS 2 48 60 POPS 3 49 60 POPS 4 OLDTIME ROCK 50 ROCKNROLL 1 51 ROCKNROLL 2 52 ROCKNROLL 3 53 MERSEY BEAT 54 SLOW ROCK 1 55 SLOW RO

9、CK 2 56 SLOW ROCK 3 57 DOO-WOP 58 RHYTHM Maximum Speaker Output Level at 4 load:510 mV 20 % with key E2 pressed in Church Organ tone Volume; Maximum Minimum operating voltage:5.5 V Nomenclature of Keys 2 RadioFans.CN 收音机爱 好者资料库 BLOCK DIAGRAM CPU MSM6387- 22 LSI101 Amplifier AN8053N IC101 Speaker Osc

10、illator Q102, X101 VDD Keyboard Buttons Filter Q101 KO0 KO8 KI0 KI7 AVDD CIRCUIT DESCRIPTION Key Matrix KO0 KO9 MSM6387-13 KI0KI1KI2KI3KI4KI5KI6KI7 KO001C2C#2D2D#2E2F2 KO123F#2G2G#2A2A#2B2 KO245C3C#3D3D#3E3F3 KO367F#3G3G#3A3A#3B3 KO489C4C#4D4D#4E4F4 KO5ToneRhythmF#4G4G#4A4A#4B4 KO6 Tempo Up Tempo Do

11、wn C5C#5D5D#5E5F5 KO7 Start/ Stop Fill-InF#5G5G#5A5A#5B5 KO8DemoC6 KO9NormalFingered CASIO Chord 3 RadioFans.CN 收音机爱 好者资料库 Pin No.TerminalIn/OutFunction 1, 2TEST1, TEST2Not used. Connected to ground. 3RESETInPower ON reset terminal. On: +5 V Off: 0 V 4AVDDIn+5 V source for the built-in DAC 5OUTOutSo

12、und waveform output 6AGNDInGround (0 V) source for the built-in DAC 7GNDInGround (0 V) source 8COSIIn21.725 MHz clock pulse input 9COSONot used 10VDDIn+5 V source 11 18KI0 KI7InInput terminals from keys and switches 19, 20KO11, KO10Not used 21 30KO9 KO0OutKey and switch scan signal outputs CPU (LSI1

13、01: MSM6387-13) Containing a sound data ROM and a DAC (Digital to Analog Convertor), the CPU provides sound waveform in accodance with the pressed key and the selected tone. The following table shows the pin functions of LSI101. Filter Block Since the sound signal from the CPU is a stepped waveform,

14、 the filter block is added to smooth the waveform. AVDD C108 Q101 2SC1740SQ C107 AG R107R2106 C106 C109 AG R105 AG R104 R108 To power amp From CPU Amplifier/Voltage Regulator (IC101: AN8053N) The right figure shows the internal block of IC101. 161514131211109 87654321 SP AMPVREF 5V REG POWER SPONCSP

15、 GNDPC-1PC-2SPISPMVREF VCCNCCONT 5V VREGNCNCNC PRE GND + - 4 TROUBLESHOOTING No power Power indicator does not light up. Connect an AC adapter into the power jack. Does the keyboard work? Measure voltage at pin 16 of IC AN8053N. Is the voltage +6.8 V? Check contact of the power jack. Is it OK? Repla

16、ce the jack. Check soldering at pins of the power jack. Is it OK? Check D102. If D102 is defect, replace it. Solder the pins. Check contact at battery springs. Replace D101. Check contact of power switch. Clean the switch contacts. No Yes No Yes NoYes YesNo 5 No sound Measure voltage at pin 13 of IC

17、 AN8053N. Is the voltage +5 V ? Measure voltage at pin 16 of IC AN8053N. Is the voltage +6.8 V? Follow flow chart of No Power. Measure voltage at pin 14 of IC AN8053N. Is the voltage 0 V? Clean contacts of the power switch. Replace IC AN8053N. Turning power on, measure voltage at pin 3 of LSI MSM638

18、7-13. Does the voltage raise from 0 V to +5 V? Clean contacts of the power switch. A YesNo No NoYes Yes No 6 A Measure voltage at pins 22 30 of LSI MSM6387-13. End Is the voltage +0.3 V? Replace LSI MSM6387-13. Does the keyboard work? Replace ceramic oscillator X101. Does the keyboard work? Replace

19、transistor Q102. Does the keyboard work? Check the circuit around Q102 and X101. Touch pin 5 of LSI MSM6387-13 with test rod (+) of multimeter in resistance range, connecting test rod (-) to ground. Is a noise made? Touch pin 6 of IC AN8053N with test rod (+) of multimeter in resistance range, conne

20、cting test rod (-) to ground. Is the noise made? Using a multimeter, check conductivity of speaker at terminals on the main PCB. Is it OK? Replace speaker. Replace LSI MSM6387-13. Check filter circuit around Q101. YesNo YesYes Yes Yes No No No No No No Yes Replace IC AN8053N. Yes 7 MAJOR WAVEFORMS 1

21、 Clock pulse COSI MSM6387-13 pin 8 2 3 Key scan signal KO0 MSM6387-13 pin 30 Key scan signal KO1 MSM6387-13 pin 29 4 5 6 7 Sound signal output MSM6387-13 pin 5 Filter output Emitter of Q201 Power amp input LA4598 pin 6 Power amp output LA5498 pin 3 Tone : Flute (No.13) Key : A3 Volume : Maximum 1 2

22、3 4 5 6 7 50 ns CH1: 1V 2 ms CH1: 5 V CH2: 5 V 2 ms CH1: 50 mV CH2: 0.5 V CH1: 50 mV CH2: 50 mV 2 ms CH1 CH1 CH2 CH1 CH2 CH1 CH2 6 Power amp input AN8053N pin 6 7 Power amp output AN8053N pin 1 2 Key scan signal KO0 MSM6387-13 pin 30 3 Key scan signal KO1 MSM6387-13 pin 29 1 Clock pulse COSI MSM6387

23、-13 pin 8 4 Sound signal output MSM6387-13 pin 5 5 Filter output Collector of Q101 1 4 5 6 7 2 3 8 9 SCHEMATIC DIAGRAMS 1 4 2 5 7 6 3 10 11 PCB VIEW Main PCB 1423675 12 R-1 R-2 1 10 9 12 2 13 3 4 8 7 11 5 6 EXPLODED VIEW Notes:This parts list does not include the cosmetic parts, which parts are mark

24、ed 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 seperately. 3

25、.The numbers in item column correspond to the same numbers in drawing. PARTS LIST MA-100 FOB Japan NItemCode No.Parts NameSpecificationQ N.R.YenR Unit Price IC1012114 3269IC, Power Amp.AN8053N1A LSI1012011 2961LSI, CPUMSM6387-131A Q101, 1022220 1387Transistor2SC1740SQ-TP-T2B D1012390 1323DiodeRB100A

26、-T32-T1B D1022390 0371DiodeDSK10B-BT-T1B D1032310 7848Zener diodeRD4. 3ESB2-T1-T1A X1012590 1897Ceramic oscillatorEFO-EN2175C41B J1013501 3731Power jackHEC2305-01-2501A N16925 0500PCB assy, MA1MM240352*11B N26925 0510PCB assy, KYM240353*11B 36921 5031Slide knobM311859A-12B N46925 0540Button, RubberM

27、240278-11B 56909 5890Slide contactCSB-12D2B N63831 1029Speaker300RB031B N76925 0550White key set, 19-keyM140301-11A N86925 0560Black key set, 13-keyM140302-11A N96925 0570White key set, 10-keyM140303-11A N106925 0580Black key set, 7-keyM140304-11A N116925 0590Key contact rubber, 32-contactM240287-11B N126925 0600Key contact rubber, 17-contactM240288-11B 136906 7511Battery coverM312197A*31B Notes: N New parts R Rank 13 MA0400761A