Casio_M-200_Service_Manual电路图.pdf

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1、ELECTRIONIC KEYBOARD M-200 (without price) M-200 RadioFans.CN 收音机爱 好者资料库 INDEX CONTENTS Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Circuit Descr

2、iption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 IC and Transistor Lead Identification . . . . . . . . . . . . . . . . . . . . . . . . 6 PCB View and Major Waveforms . .

3、. . . . . . . . . . . . . . . . . . . . . . . . 7 Schematic Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Exploded View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Parts List . . . . . . . . . . . . . . . . . . . . . . . . .

4、 . . . . . . . . . . . . . . . . . . . 11 RadioFans.CN 收音机爱 好者资料库 General Number of Keys:32 Polyphonic:4-note Preset Tones:25 Tone Edit Variations:4 Patterns:Auto-Rhythms: 8, including; 8-Beat, 16-Beat, Swing, Slow Rock, Shuffle, March, Samba, Waltz Accompaniments: 8, including; Rock, Pops, Jazz, Fu

5、nk, House, Country, Ratin, Classical Funny Sounds: 8, including; Fanfare, Hpper, Computer Sound, Horror, Childs Play, Orient, Jungle, Comedy Demonstration Tunes:10 tunes with Lesson Function 1. Twinkle Twinkle Little Star6. Home, Sweet Home 2. Minuet (J.S. Bach)7. Little Brown Jug 3. Oh! Susanna8. T

6、he Skaters Waltz 4. Aura Lee9. Jingle Bells 5. Lullaby (Brahms)10. When The Saints Go Marching In Built-In Speakers:8.0 cm dia. 1.0 W Input Rating: 2 pcs. Terminals:Output Jack Output Impedance:100 , Output Voltage: 2.1 V (rms) MAX AC Adapter Jack (DV 7.5 V) Power Source:DC: 5 AA size dry batteries

7、Battery life: Approx. 6 hours (SUM-3/R6P) AC: AC Adapter AD-1 Power Consumption:1.6 W Dimensions (HWD):57 x 619 x 178 mm (2-1/4 x 24-3/8 x 6 inches) Weight:1.1 kg (2.4 lbs) including batteries Electrical Current Drain with 7.5 V DC: No Sound Output28 mA 20% Maximum Volume90 mA 20% with keys C4 and E

8、4 pressed in Flute tone Volume: Maximum, Accmpaniment: Latin, Tempo: Maximum Sound Pressure Level at 10 cm away from the speaker100 dB 10 dB with key C6 pressed in Clarinet, Volume: Maximum Minimum Operating Voltage: 5.0 V SPECIFICATIONS 1 RadioFans.CN 收音机爱 好者资料库 F#3 G#3 A#3C#4 D#4F#4 G#4 A#4C#5 D#5

9、F#5 G#5 A#5 F3G3A3B3C4D4E4F4G4A4B4C5D5E5F5G5A5B5C6 Nomenclature of Keys BLOCK DIAGRAM 2 KO0KO6 KI0KI7 Keyboard Switches Oscillator X1 Amplifier AN8053N IC1 Speakers CPU MSM6387-16 LSI1 VDD Filter T1 Output Jack Key Matrix CPU (LSI1: MSM6387-16) Containing a sound data ROM and a DAC (Digital to Analo

10、g Convertor), the CPU provides sound wave- form in accordance with the pressed key and the selected tone. The following table shows the pin functions of LSI1. CIRCUIT DESCRIPTION 3 KI0KI1KI2KI3KI4KI5KI6KI7 KO0F3F#3G3G#3A3A#3B3C4 KO1C#4D4D#4E4F4F#4G4G#4 KO2A4A#4B4C5C#5D5D#5E5 KO3F5F#5G5G#5A5A#5B5C6 K

11、O4KeyboardWindStringSynthS.E.Tone Edit KO5RhythmAccomp.Stop KO6LessonMelodyOffDemo Funny Accomp. Tempo Down Volume Down Tempo Up Volume Up Pin No.TerminalIn/ OutFunction 1, 2TEST1, TEST2Not used. Connected to ground. 3RESETInPower ON reset input. On: +6 V Off: 0 V 4AVDDIn+5 V sorce for the built-in

12、DAC 5OUTOutSound waveform output 6AGNDInGround (0 V) source for the built-in DAC 7GNDInGround (0 V) source 8, 9COSI, COSOIn/Out21.725 MHz clock pulse input/output 10VDDIn+5 V source 11 18KI0 KI7In Input terminal from keys and switches 19 22KO11 KO8 Not used. 23 30KO7 KO0Out Key and switch scan signa

13、l output AVDD AGAG C10 C11 T1 2SC1740SQ AG C5 R5 R11 C9 R6R7R8 Amplifier/Voltage Regulator (IC1: AN8053N) Consisting of an amplifier and a voltage regulator, AN8053N amplifies the sound signal from the CPU and also provides the CPU +5V source. The following figure shows the internal block of IC1. 16

14、1514131211109 87654321 SP AMPVREF 5V REG POWER SPONCSP GNDPC-1PC-2SPISPMVREF VCCNCCONT 5V VREGNCNCNC PRE GND + - To Amplifier From CPU 4 Filter Block Since the sound signal from the CPU is a stepped waveform, the filter block is added to smooth the waveform. 5 TROUBLESHOOTING Nature of Trouble No so

15、und at all Certain key(s) or switch(es) do(es) not work. Checkpoint Pin 13 should have +5V. An amplified waveform should be observed at pin 1. Voltage at pin 3 of the CPU should be raised from 0V to +5V when the power switch is turned on. Switch contact. Pins 24 30 should provide pulses. Pin 5 shoul

16、d provide a sound waveform when a key is pressed. Pins 8 and 9 of the CPU should receive an oscillation signal. Faulty Block Power amp. (IC1: AN8053N) Power Switch CPU (LSI1: MSM6387-16) Oscillator (X1) Key or Switch Contact Open Circuit on KO or KI Lines IC1: AN8053N 30 29 28 24 27 26 25 23 22 21 2

17、0 19 18 17 16 TEST2 TEST1 RESET GND AVDD OUT AGND COSI COSO VDD KI0 KI1 KI2 KI3 KI4 1 2 3 7 4 5 6 8 9 10 11 12 13 14 15 KO0 KO1 KO2 KO6 KO3 KO4 KO5 KO7 KO8 KO9 KO10 KO11 KI7 KI6 KI5 LSI1: MSM6387-16 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 SPO NC SPG PC-1 PC-2 SPI SPM VREF VCC NC CONT VREG NC NC NC PR

18、 GND T1: 2SC1740SQ E C B 6 IC AND TRANSISTOR LEAD IDENTIFICATION 7 PCB VIEW & MAJOR WAVEFORMS Main PCB M3546-MA1M (Top View) Clock pulse COSO MSM6387-16 Pin 9 1 1 Key scan signal KO0 MSM6387-16 Pin 30 2 Key scan signal KO1 MSM6387-16 Pin 29 3 Sound output MSM6387-16 Pin 5 Tone : Piano Key : G4 4Powe

19、r Amp. output AN8053N Pin 1 Tone : Piano Key : G4 Volume : Max. 5 2 3 4 5 45132 8 SCHEMATIC DIAGRAM PCB M3546-MA1M 1 4 5 2 3 4.1 0.0 4.0 3.1 4.1 9.1 0.0 5.2 5.2 0.0 4.7 1.9 4.5 0.5 0.5 0.6 0.5 0.5 0.0 0.0 0.0 5.2 4.7 2.5 0.0 0.0 2.2 2.0 4.9 0.0 0.0 9 KY1M KEYBOARD PCB 10 11 9 6 5 2 1 7 4 3 8 10 12 1

20、6 13 17 14 13-1 13-2 15 EXPLODED VIEW Notes: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. PA

21、RTS LIST M-200 FOB Japan NItemCode No.Parts NameSpecificationQM N.R.YenR* Unit Price Electrical Parts LSI12011 4767 LSIMSM6387-16SS-10611AE IC12114 3269 Monolithic ICAN8053N11AB T12252 0497 Transistor2SC3199Y-AT-T1 20BA D12390 0371 DiodeDSK10B-BT-T1 10BA D22390 1316 DiodeSB10-04A3-BT-T15BA D412,5182

22、2390 1589 DiodeMA165P-(TA5)-T42 20CA X12590 0742 Ceramic oscillatorEFO-GC2175C311BB R3,7,82606 1141 Carbon film resistorR-20-1K-J-T23-T3 20CA R1,2,9,102606 1169 Carbon film resistorR-20-100-J-T23-T4 20CA R62606 1288 Carbon film resistorR-20-2.2K-J-T23-T1 20CA R52606 1365 Carbon film resistorR-20-3.9

23、K-J-T23-T1 20CA R112606 1484 Carbon film resistorR-20-820-J-T23-T1 20CA R42606 1554 Carbon film resistorR-20-120K-J-T23-T1 20CA C12802 9777 Electrolytic capacitor16RE3-470-T20-T1 20CA C82805 3061 Electrolytic capacitor6.3RE2-220-T2-T1 10CA C3/42805 3134 Electrolytic capacitor10RE2-22-T2-T2 20CA C628

24、07 1023 Electrolytic capacitor50RE2-1-T2-T1 10CA C72807 1091 Electrolytic capacitor6.3RE2-100-T2-T1 10CA C22807 1710 Electrolytic capacitor16RE3-220-T2-T1 20CA C92813 0651 Semiconductive capacitorRT-C40TKYR332K-T1 20CA C52813 1932 Semiconductive capacitorRT-C50TKYR223K-T1 20CA C102813 1939 Semicondu

25、ctive capacitorRT-B70TKYR473K-T1 20CA C12/132813 2093 Semiconductive capacitorTR-B50TKYR103K-T2 20CA C112813 2415 Semiconductive capacitorRT-B50TKYR153K-T1 20CA FB142845 3220 Ferrite beadsEXC-ELDR35V-T4 20CA J13501 3731 DC jackHEC2305-01-25015AA J23612 0711 Miniature jackYKB21-510111AB 3719 3990 Rib

26、bon cable M546ADF5H12065-800080001 20CA L1/23841 0910 CoilFL5R1R0PNA25CA 4317 3550 Blank PCB M3546-MA1MM111579-111CB 4317 3560 Blank PCB M3546-KY1MM111579-211CB 16921 6390 PCB assy M3546-MA,KYM111578*111BP Mechanical Parts 23831 0385 SpeakerEAS-8P149AD12CB 36909 7380 SL contact 9DCSB-09D1 10BA 46917

27、 1471 Key contact rubberM210670A-115BB 56917 1511 White key setM110550A-111AB 66917 1522 Black key setM110551B-115AB 76917 4510 Stopper 216M411074-11 10CA 86921 6480 Slide knob 601M311859-21 10BA N96922 7180 Upper case sub assyM211568*611CE 106917 1491 Upper key stopperM310881A-11 10CA 116917 1500 K

28、ey stopper 216M411040-12 10CA N126922 6230 Rubber button M546M211555-311CC N136906 6965 Lower case sub assyM211570E*511CE 13-16345 2238 Battery spring (+) A-G55A42606B-11 20CA 13-26912 2630 Battery spring (-) 120M42382-11 10CA 146921 6500 Battery cover 546M311914-115BA N156922 9490 Rating labelM411126-171 10CA 160009 2682 Screw2.6 x 8 ZMC-321 20CA 170009 5573 Screw2.6 x 10 ZMC-315 20CA Notes: N New parts M Minimum order/supply quantity R Rank 11 8-11-10, Nishi-Shinjuku Shinjuku-ku, Tokyo 160, Japan Telephone: 03-3347-4926 Aug, 1994