Casio_SK-60_Service_Manual电路图.pdf

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1、ELECTRIONIC KEYBOARD SK-60 SK-60 MELODY? ON/OFF TIME SML?1-2-3?1-2-3-4 ?1-2 CYCLE REVERSECLEAR RELEASE EFFECT LOOP TUNE RESET 36 TONES 12 FREE SESSIONS 11 12 13 14 15 16 21 22 23? 24 25 26 31 52 53 54 55 56? ? ? 61 62 63 64 65 66 32 33 34 35 36? ? 41 42 43 44 45 46 51 ? 11 12 13 14 15 16 21 22 23 24

2、 25 26 ? 31 32 33 34 35 36 41 42 43 44 45 46 ? 51 52 53 54 55 56 61 62 63 64 65 66 ? POPS 1? BIG BAND? SWING? FOX TROT? POPS 2? WALTZ 1? WALTZ 2? POLKA? SKA? TEX-MEX? COUNTRY? BAROQUE ? MARY HAD A LITTLE LAMB? AMAZING GRACE? ACH DU LIEBER AUGUSTIN? LONDON BRIDGE? JOY TO THE WORLD? GREENSLEEVES? JING

3、LE BELLS? SILENT NIGHT? O CHRISTMAS TREE? YANKEE DOODLE? SANTA LUCIA? MARCH FROM “THE NUTCRACKER”? ? VOICES OF REASON (ORIGINAL SONG)? TWINKLE TWINKLE LITTLE STAR? DOOIN MY THING (ORIGINAL SONG)? ODE TO JOY? LITTLE BROWN JUG? SPRING FROM “THE FOUR SEASONS”? WHEN THE SAINTS GO MARCHING IN? FRRE JACQU

4、ES? OLD MacDONALD HAD A FARM? AULD LANG SYNE? LONDONDERRY AIR? ROW, ROW, ROW YOUR BOAT DOO1 (MALE)? DOO2 (MALE)? BAH (BASS)? BOM (BASS)? VOICE PERCUSSION? ? ? DOO-BEE? BOM-BAH? DOO-BEE-DEE? DOO-BEE-BAH? DOO-BEE-DEE-BAH? DOO-BEE-DOO-BAH SIREN 2? TELEPHONE? SPACE 1? SPACE 2? FUNNY? ? DOO (FEMALE)? BEE

5、 (FEMALE)? DEE (FEMALE)? BAH (FEMALE)? AHH (CHOIR)? OOH (CHOIR)? LA (CHILDREN)? PIANO? ELEC PIANO? ORGAN? ACCORDION? GUITAR? VIBRAPHONE? VIOLIN? STRINGS? TRUMPET? CLARINET? SAX? FLUTE? SIREN 1 HUMAN VOICEHUMAN VOICE? (CYCLE) 36 SONG BANK? 24 SONGS POWER ON OFF VOLUME TEMPOTONE SONG BANK START/? STOP

6、 MAGICAL? SINGER PAD? EFFECT SAMPLE EDITSAMPLING PAD A C B D S A M P L I N G M I C 123 456 12 34 RadioFans.CN 收音机爱 好者资料库 2 CONTENTS Specifications . 2 Block Diagram. 3 Circuit Description . 4 Major Waveforms . 7 Printed Circuit Board .8 Schematic Diagrams .9 Exploded View . 11 Parts List . 13 SPECIF

7、ICATIONS GENERAL Number of keys:32 Polyphonic:12-note Preset tones:18 Human voice tones:12 Voice cycles:6 Song bank:24-tune Free sessions:12 Pads:4 Pad settings:Sampled sounds, effects, voice percussion Sampling method:8-bit Differential Pulse Coded Modulation (DPCM) Sampling rate:13,021 kHz Samplin

8、g duration:2.4 seconds maximum Tuning control:Approx. 440 Hz Built-in speakers:4 inch dia. 2 W input rating: 2 pcs Terminals:7.5 V DC Power source:2-way AC or DC source AC: AC adapter DC: 5 AA size dry batteries Power consumption:2.0 W Dimensions(HWD):416 222 530 mm (16-3/8 8-6/8 20-7/8 inches) Weig

9、ht:1.0 kg (2.2 lbs) excluding batteries ELECTRICAL Current drain with 7.5 V DC: No sound output50 mA 20% Maximum volume200 mA 20% with white keys F4 to C6 pressed in Bah tone (No. 44) Power off80 A (maximum) Speaker output level (Vrms with 4 load): with key C4 pressed in Accordion tone480 mV 20% Vol

10、ume: maximum Minimum operating voltage5.8 V RadioFans.CN 收音机爱 好者资料库 3 CPU? LSI1? MSM6755B-10 Keyboard Buttons PG? Q1, X1 Reset IC? IC1? RE5VL40AA Q103 Voltage Regulator? Q101, Q102, D102 Mic. Amp.? Q105, Q106 Mic. input VCC?DVDD AVDD Power Supply Circuit APO MD0 MD7MA0 MA14 RAM (256 Kbit)? LSI2? HM6

11、2256BLSP-8 KI0 KI3 KO0 KO7 KI4 KI7 Amp./Voltage Regulator? IC101? AN8053N BLOCK DIAGRAM RadioFans.CN 收音机爱 好者资料库 4 KI0KI1KI2KI3KI4KI5KI6KI7 KO0 (SO0)F3C#4A4F5A11Song KO1 (SO1)F#3D4A#4F#5B22 Start/ Stop KO2 (SO2)G3D#4B4G5C33 Melody On/Off KO3 (SO3)G#3E4C5G#5D44Tone KO4 (SO4)A3F4C#5A5 Volume Up Magical

12、 Singer 5 KO5 (SO5)A#3F#4D5A#5 Volume Down Sampling6 KO6 (SO6)B3G4D#5B5 Tempo Up EditEffect KO7 (SO7)C4G#4E5C6 Tempo Down CIRCUIT DESCRIPTION KEY MATRIX NOMENCLATURE OF KEYS F3G3A3B3C4D4E4F4G4A4B4C5D5E5F5G5A5B5C6 F#3 G#3 A#3C#4 D#4F#4 G#4 A#4C#5 D#5F#5 G#5 A#5 5 Pin No.TerminalIn/OutFunction 1MA14Ou

13、tAddress bus 2MWEBOutWrite enable signal output 3NC0Not used. 4 19MA0 MA13OutAddress bus 13MRDBOutRead enable signal output 17MCSBOutChip select signal for the RAM 20 27MD0 MD7In/OutData bus 28, 29NC1, NC2Not used. 30DGNDInGround source 31DVCCIn+5 V source 32, 33XTL0, XTL1In/Out20 MHz clock input/ou

14、tput 34NC3Not used. 35RSTBInReset signal input 36RXDNot used. Connected to +5 V. 37TXDNot used. 38NMIInPower ON signal input 39APOOutAPO(Auto Power Off) signal output 40NC4Not used. 41REFHOutTerminal for the built-in DAC/ADC 42, 43NC5, NC6Not used. 44DAOROutSound waveform output 45NC7Not used. 46AVd

15、acIn+5 V source for the built-in DAC/ADC 47DAOLNot used. 48REFLOutTerminal for the built-in DAC/ADC 49AGdacNot used. 50AGadcInGround source for the built-in ADC 51ANIInAnalog signal input 52AVadcIn+5 V source for the built-in ADC 53NC8Not used. 54MOD0InMode selection terminal 55, 56MOD1, MOD2InMode

16、selection terminal 57P40InAPO cancellation signal input 58 65KI0 KI7InTerminals for key/button input signal 66 73KO1 KO8OutTerminals for key scan signal 74 78Not used. 79LVCCIn+5 V source 80 95Not used. 96LGNDInGround source 97 100Not used. CPU (LSI1: MSM6755B-10) Containing a sound data ROM and a D

17、AC (Digital to Analog Convertor), the CPU provides sound waveform in accordance with the pressed key and the selected tone. The CPU also records the voice picked up the microphone, using the built-in ADC (Analog to Digital Convertor) and the RAM. The following table shows the pin functions of LSI1.

18、6 Oscillator? 20 MHz CPU APO DVDD DVDD From power switch SWITCH: OFF ON +5 V +5 V 0 V APO:L H +7.5 V 0 V AMPLIFIER/VOLTAGE REGULATOR (IC101: AN8053N) The right figure shows the internal block of IC 101. 169 SP AMP ? + VREF 5V REG POWER 13456782 151413121110 VCCNCCONT 5 V? VREGNCNCNC PRE GND SPONC SP

19、 GND PC-1PC-2SPISPMVREF POWER SUPPLY CIRCUIT The power supply circuit generates two voltages DVDD (+5 V) and AVDD (+5 V). DVDD (+5 V) is always generated but AVDD (+5 V) is controlled by APO signal output from the CPU. OSCILLATOR +5 V source of the oscillator is controlled by transistor Q107. When s

20、electing the power switch at on position, transistor Q107 turns on to become 20 MHz oscillation on. To keep the oscillation on, the CPU provides H of APO signal. 7 MAJOR WAVEFORMS 1 Clock pulse MSM6755B-10 pin 32 2 Key scan signal KO6 MSM6755B-10 pin 72 3 Key scan signal KO7 MSM6755B-10 pin 73 12 3

21、4 Sound waveform MSM6755B-10 pin 44 5 Mic. amp. input Terminal PM-BL 6 Mic. amp. output MSM6755B-10 pin 51 4 5 6 Tone:No. 22 Key:A4 8 214635 PRINTED CIRCUIT BOARD Main PCB KDM415-MA1M 9 1 23 4 5 6 SCHEMATIC DIAGRAMS Main PCB KDM415-MA1M/KY2M 10 Keyboard PCB KDM415-KY1M EXPLODED VIEW 11 3 4 7 8 10 11

22、 12 9 1 2 5 6 R-1 R-3 R-2 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 need these parts for refurbish. 1.Prices and specifications are subject to change with- out prior notice. 2.As

23、 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 SK-60 ItemCode No.Parts NameSpecificationQR Main PCB 16925 4540Main PCB assy M415-MA1MM140426*11 B LSI12012 3738L

24、SI, CPUMSM6755B-101 A LSI22012 3731LSI, RAMHM62256BLSP-81 A IC12105 5922ICRE5VL40AA-TZ1 A IC1012114 3269ICAN8053N1 A 2220 1387Transistor2SC1740SQ-TP-T5 A Q1022251 0469Transistor2SB1237Q,R-TV6-T1 A Q1072200 2449Transistor2SA933SQ-TP-T1 A D12390 2828DiodeRB441Q-40T-771 B D1012360 1554Diode, ZenerMTZJ5

25、.1B-T77-T1 B D1022360 1085Diode, ZenerHZS6B1LTD-T1 B D1032390 1323DiodeRB100A-T32-T1 C D1042390 0371DiodeDSK10B-BT-T1 C 2390 1344Diode1SS133T-77-T20 C LED1012370 1106LEDMPR3338S-B991 C X12590 1526Creamic oscillatorEFO-EN2005C41 B J1013501 3780Jack, PowerHEC2305-01-2501 B Keyboard PCBs 26925 4550Keyb

26、oard PCB assy, M415KY1,2MM140427*11 B 2390 1344Diode1SS133T-77-T32 C Mechanical Parts 33831 1064SpeakerS08JA32A1 B 46909 5890Slide contactCSB-12D1 B 53830 9021MicrophoneWM-034CY1 B 66925 4560Rubber buttonM240409-11 B 76925 4570Rubber buttonM240410-11 B 86925 4580Black key set, LNM32M110553-41 A 96925 4590White key set, NM32-BM140416-11 A 106925 4600Key contact rubberM240448-11 A 116925 4610Slide knobM311360-31 B 126925 4620Battery coverM311200*131 B Notes: Q Used quantity R Rank 13 MA0700761A