Casio_CTK-520L_Service_Manual电路图.pdf

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1、ELECTRONIC KEYBOARD CTK-520L CTK-520L TONE RHYTHMSONG POWER/MODE FINGERED CASIO CHORD NORMAL ON OFF VOLUMESYNCHRO/? FILL-IN START/? STOP TEMPO ? ? ? ? TRANSPOSE/TUNE 0 5 1 6 2 7 3 8 4 9 TONE RHYTHM SONG? BANK PART? SELECT PIANO 00PIANO 1 01PIANO 2 02HONKY-TONK 03STUDIO PIANO 04ELEC PIANO 1 05ELEC PI

2、ANO 2 06ELEC PIANO 3 07ELEC PIANO 4 08HARPSICHORD 09CLAVELECTRO ORGAN 10ELEC ORGAN 1 11ELEC ORGAN 2 12ELEC ORGAN 3 13ELEC ORGAN 4 14CHURCH ORGAN 15PIPE ORGAN 16REED ORGAN 17ACCORDION 18BANDONEON 19HARMONICA GUITAR/BASS 20GUT GUITAR 21ACOUS GUITAR 22JAZZ GUITAR 23ELEC GUITAR 24MUTE GUITAR 25DIST GUIT

3、AR 26WOOD BASS 27ELEC BASS 28SLAP BASS 29BANJO STRINGS/ENSEMBLE 30VIOLIN 31CELLO 32HARP 33STRINGS 1 34STRINGS 2 35STRINGS 3 36SYNTH-STR 1 37SYNTH-STR 2 38CHOIR 39VOICE BRASS 40TRUMPET 41TUBA 42BRASS SECTION 43FRENCH HORN 1 44FRENCH HORN 2 45BRASS 1 46BRASS 2 47SYNTH-BRASS 1 48SYNTH-BRASS 2 49SYNTH-B

4、RASS 3 REED/PIPE 50SOPRANO SAX 51ALTO SAX 52TENOR SAX 53OBOE 54CLARINET 55PICCOLO 56FLUTE 57RECORDER 58FLUTE ENSEMBLE 59WHISTLE SYNTH-SOUND 1 60SYNTH-LEAD 1 61SYNTH-LEAD 2 62SYNTH-LEAD 3 63SYNTH-CALLIOPE 64SYNTH-PAD 1 65SYNTH-PAD 2 66SYNTH-PAD 3 67GLESS HARMONICA 68COUNTRY FARM 69SYNTH-BASS SYNTH-SO

5、UND 2 70PEARL DROP 71COSMIC SOUND 72SOUNDTRACK 73SPACE PAD 74SYNTH-SFX 75SE 1 (VEHICLE) 76SE 2 (TELEPHONE) 77SE 3 (SPACE) 78SE 4 (INVADER) 79SE 5 (FUNNY) LAYER 80STRINGS PIANO 81STRINGS EP 82CHOIR EP 83CHOIR ORGAN 84STRINGS GUITAR 85STRINGS HARP 86BRASS STRINGS 87VIB PAD 8812STR GUITAR 89CHOIR STRIN

6、GS SPLIT/PERCUSSION 90BASS/PIANO 91BASS/E.PIANO 92BASS/VIB 93BASS/G.GUITAR 94BASS/D.GUITAR 95STRINGS/PIANO 96STRINGS/TRUMPET 97VIBRAPHONE 98MARIMBA 99PERCUSSION 100 TONES 3-STEP LESSON ONE KEY PLAY STEP 1STEP 2STEP 3DEMO POPS 00POP FUSION 01BALLAD 02POP BALLAD 03RAP POP 04SOUL BALLAD 05FUNKY POP 061

7、6BEAT 078BEAT 1 088BEAT 2 09POPS ROCK 10ROCK WALTZ 11SLOW ROCK 12SOFT ROCK 1 13SOFT ROCK 2 14FOLKIE POP 1560s SOUL 16ROCK 17HEAVY METAL 1850s ROCK 19CHICAGO BLUES JAZZ/DANCE 20BIG BAND 21SLOW SWING 22FOX TROT 23JAZZ WALTZ 24ACID JAZZ 25LATIN FUSION 26TRANCE 27DISCO 28RAP 29FUNK EUROPEAN/LATIN 30POLK

8、A 31MARCH 32SLOW WALTZ 33WALTZ 34TANGO 35BOSSA NOVA 36SAMBA 37MAMBO 38RHUMBA 39CHA-CHA-CHA VARIOUS 40MERENGUE 41REGGAE 42SKA 43TEX-MEX 44FOLKLORE 45COUNTRY 46SLOW GOSPEL 47ADANI 48BAROQUE 49ENKA 01TWINKLE TWINKLE? LITTLE STAR 02ACH DU LIEBER AUGUSTIN 03AMAZING GRACE 04ODE TO JOY 05LONDON BRIDGE 06LO

9、NDONDERRY AIR 07GREENSLEEVES 08AULD LANG SYNE 00WHEN YOU WISH? UPON A STAR 11OVER THE RAINBOW 12O CHRISTMAS TREE 13YANKEE DOODLE 14SANTA LUCIA 15WHEN THE SAINTS? GO MARCHING IN 16ALOHA OE 17 09JOY TO THE WORLD 10JINGL BELLS SPRING FROM? THE FOUR SEASONS 20IMAGINE 21 22LITTLE BROWN JUG 23MARCH FROM?

10、THE NUTCRACKER 24THE ENTERTAINER 25 18STAND BY ME 19YOU CANT HURRY LOVE SERENADE? EINE KLEINE NACHTMUSIK I JUST CALLED TO? SAY I LOVE YOU 28FROM THE NEW WORLD 29 31CANON(PACHELBEL) 32SILENT NIGHT 34 THE ENTERTAINER35 26THE GIRL FROM IPANEMA 27LOVE STORY ETUDE op.10, no.3? CHANSON DE L ADIEU MISTY 30

11、MINUET(J.S.BACH) 33CLAIR DE LUNE 38 36MOON RIVER 37FUR ELISE 39INVENTION no.1 TURKISH MARCH? (RONDO ALLA TURCA) 40 SONG BANK50 RHYTHMS RadioFans.CN 收音机爱 好者资料库 CONTENTS Page Specifications . 1 Block Diagram . 2 Circuit Description . 3 Major Waveforms . 6 Printed Circuit Boards . 7 Schematic Diagrams

12、. 8 Exploded View. 14 Parts List . 15 RadioFans.CN 收音机爱 好者资料库 1 SPECIFICATIONS GENERAL Number of keys:61 Polyphonic:12-note Preset tones:100 Transpose:F# C F: half-note Auto-rhythms:50, Tempo: Adjustable, 216 steps (40 255), initial value: 120 Accompaniment:CASIO Chord, Fingered Song bank:40-tune Di

13、gital volume control:10 steps (0 9), initial value: 7 Tuning control:440 Hz 50 cents Built-in speakers:10 cm dia. 2 W input rating: 2 pcs Terminals:Headphone Jack (Output impedance: 50 ohm, Output voltage: 4.6 V (rms) MAX AC Adapter Jack (9 V) , Stereo standard Jack Output impedance: 50 , Output vol

14、tage: 2 V(rms) MAX Auto power off:Approximately 6 minutes after the last operation Power source:2-way AC or DC source AC: AC adapter DC: 6 AA size Power consumption:7.7 W Dimensions (HWD):89 924 325 mm (3-1/2 36-7/16 12-13/16 inches) Weight:4.35 kg (9.6 lbs) excluding batteries ELECTRICAL Current dr

15、ain with 9 V DC: No sound output130 mA 20% Maximum volume810 mA 20% with white keys C1 to G2 pressed in Synth-Lead 1 Volume: Maximum Phone output level (Vrms with 8 ohm load each channel): with key D3 pressed in Synth-Lead 195 mV 20% Speaker output level (Vrms with 4 ohm load each channel): with key

16、 D3 pressed in Synth-Lead 11050 mV 20% Minimum operating voltage:6.3 V RadioFans.CN 收音机爱 好者资料库 2 Buttons Illuminant Keyboard 7 seg. LED LED LatchIC2, IC3 Q5 Q8 Q1 Q4 PG X1, Q11 Reset IC IC1 Q307 Power Supply Circuit Q301 Q304 D334, D335 Amp. IC301 LA4598 Filter (L) Q306 Filter (R) Q305 Phone/Output

17、DC+9V IN APO Cancellation Signal APO MA0 MA16MD0 MD7 Sound Source ROM LSI2 MX23C1010MC-12CA45 KO8 KO11 LY0 LY7 KO0 KO7 LX0 LX7 KI0 KI7 CPU LSI1 MSM 6755B-07 LED Driver LED Driver BLOCK DIAGRAM 5 Amp. IC301 Filter Block Q305/Q306 CPU LSI1 FILTER BLOCK Since the sound signal from the CPU is a stepped

18、waveform, the filter block is added to smooth the waveform. POWER AMPLIFIER (IC301: LA4598) The power amplifier is a two-channel amplifier with standby switch. The following table shows the pin function of IC301. Pin No.TerminalIn/OutFunction 1Power GNDIn Ground (0V) source 2Ch1 B.S. Terminal for a

19、bootstrap capacitor 3Ch1 OUTOut Channel 1 output 4VCCIn +9V source 5Ch1 N.F.In Negative feedback input 6Ch1 INIn Channel 1 input 7D.C. Terminal for a decoupling capacitor 8Pre GNDIn Ground (0V) source 9Stand byIn Power control signal input. 0 V: Off, +9 V: On 10Ch2 INIn Channel 2 input 11Ch2 N.F.In

20、Negative feedback input 12Ch2 OUTOut Channel 2 output 13Ch2 B.S. Terminal for a bootstrap capacitor 14NC Not used LED DRIVING LG LVDD CPU? ? LSI1? ? MSM6755B-07 LX0 LX7 LY0 LY7 Q1 Q4 Q5 Q8 Q2 Q4 La Lg (Common) (Segment)MWEB LED? Latch? IC3 7-segment LEDKeyboard LEDs LED? Latch? IC2 MD0 MD3 MD4 MD7?

21、MA0 3 CIRCUIT DESCRIPTION KEY MATRIX KI0KI1KI2KI3KI4KI5KI6KI7 KO0C2G#2E3C4G#4E5C6G#6 KO1C#2A2F3C#4A4F5C#6A6 KO2D2A#2F#3D4A#4F#5D6A#6 KO3D#2B2G3D#4B4G5D#6B6 KO4E2C3G#3E4C5G#5E6C7 KO5F2C#3A3F4C#5A5F6 KO6F#2D3A#3F#4D5A#5F#6 KO7G2D#3B3G4D#5B5G6 KO801234 Start/ Stop Up Volume Down KO956789Down Volume Dow

22、n Synchro/ Fill-In K10ToneRhythm Song Bank Part Select One KeyOne KeyDemo K11Step-1Step-2Step-3Fingered Casio Chord NormalOff LED MATRIX LX0LX1LX2LX3LX4LX5LX6LX7 LY0D4D3C3C2G#2F#2D#2C#2 LY1C4E3B2D2A#2C#3D#3F#3 LY2B3F3A2E2D#4C#4A#3G#3 LY3A3G3G2F2F#4G#4A#4C#5 LY4E4E5F5F6G6 LY5F4D5G5E6A6G#5F#5D#5 LY6G4

23、C5A5D6B6A#5C#6D#6 LY7A4B4B5C6C7A#6G#6F#6 NOMENCLATURE OF KEYS F#3 G#3 A#3C#4 D#4F#4 G#4 A#4 C#5 D#5F#5G#5 A#5 F3G3A3B3C4D4E4F4G4A4B4C5D5E5F5G5A5B5C6 D#3 C2D2E2F2G2A2B2C3D3E3B6A6G6F6E6D6C7 C#3A#2G#2F#2D#2C#2A#6G#6F#6D#6C#6 4 Pin No.TerminalIn/OutFunction 1MA14OutAddress bus 2MWEBOutClock for LED latc

24、hes 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 MHz clock input/output 34NC3Not used. Connected to ground. 35RSTBInReset signal input 3

25、6P24/RXDNot used. Connected to +5 V. 37P25/TXDNot used. 38NMIIn Power ON signal input 39APOOutAPO (Auto Power Off) signal output 40NC4Not used. 41REFHOutTerminal for the internal DAC 42, 43NC5, NC6Not used. 44DAOROutRight channel sound waveform output 45NC7Not used. 46AVdacIn+5 V source for the inte

26、rnal DAC and ADC 47DAOLOutLeft channel sound waveform output 48REFLOutTerminal for the internal DAC and ADC 49AGdacInGround source for the internal DAC 50AGadcInGround source for the internal ADC 51ANINot used. Connected to ground. 52AVadcIn+5 V source for the internal ADC 53NC8Not used. 54MOD0InMod

27、e selection terminal. Connected to +5 V. 55, 56MOD1, MOD2InMode selection terminal. Connected to ground. 57P40InAPO cancellation signal 58 65KI0/P30 KI7/P37InTerminals for key/button input signal 66 73KO0/P50 KO7/P57OutTerminals for key scan signal 74 77KO8/P20 KO11/P23OutTerminals for button input

28、signal 78NC9Not used. 79LVCCIn+5 V source 80 95LX0 LX7, LY0 LY7OutLED drive signal 96LGNDInGround source 97, 98MA18, MA17Not used. 99, 100MA16, MA15OutAddress bus CPU (LSI1: MSM6755B-07) The CPU reads sound data from the ROM in accordance with the pressed key and the selected tone; the CPU can read

29、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 input, button input and LED driving. The following table shows the pin func

30、tions of LSI1. 5 Amp. IC301 Filter Block Q305/Q306 CPU LSI1 FILTER BLOCK Since the sound signal from the CPU is a stepped waveform, the filter block is added to smooth the waveform. POWER AMPLIFIER (IC301: LA4598) The power amplifier is a two-channel amplifier with standby switch. The following tabl

31、e shows the pin function of IC301. Pin No.TerminalIn/OutFunction 1Power GNDIn Ground (0V) source 2Ch1 B.S. Terminal for a bootstrap capacitor 3Ch1 OUTOut Channel 1 output 4VCCIn +9V source 5Ch1 N.F.In Negative feedback input 6Ch1 INIn Channel 1 input 7D.C. Terminal for a decoupling capacitor 8Pre GN

32、DIn Ground (0V) source 9Stand byIn Power control signal input. 0 V: Off, +9 V: On 10Ch2 INIn Channel 2 input 11Ch2 N.F.In Negative feedback input 12Ch2 OUTOut Channel 2 output 13Ch2 B.S. Terminal for a bootstrap capacitor 14NC Not used LED DRIVING LG LVDD CPU? ? LSI1? ? MSM6755B-07 LX0 LX7 LY0 LY7 Q

33、1 Q4 Q5 Q8 Q2 Q4 La Lg (Common) (Segment)MWEB LED? Latch? IC3 7-segment LEDKeyboard LEDs LED? Latch? IC2 MD0 MD3 MD4 MD7? MA0 6 1 2 4 5 3 6 7 1 APO signal? MSM6755B-07 pin 39 2 Reset signal? RH5VL40AA pin 1 4 Sound signal (R-ch)? JH connector pin 3 5 Sound signal (L-ch)? JH connector pin 1 6 LED dri

34、ve signal LX0? MSM6755B-07 pin 88 3 Clock? MSM6755B-07 pin 32 7 LED drive signal LY0? MSM6755B-07 pin 80 Tone: Whistle (59)? Key : A4 Key: D4 MAJOR WAVEFORMS 7 PRINTED CIRCUIT BOARDS Sub PCB KDM446-MA2M Top view Main PCB JCM446-MA1M Bottom viewTop view 2451367 8 SCHEMATIC DIAGRAMS Main PCB JCM446-MA

35、1M 5 1 6 7 23 4 9 Sub PCB KDM446-MA2M 10 Keyboard PCBs KDM6111K-KY1M/KY2M 11 LED PCB KDM446-LD1M 12 LED PCB KDM446-LD2M 13 LED PCBs KDM446-LD3M/LD4M/LD5M KDM446-LD5M KDM446-LD4MKDM446-LD3M 1 2 3 8 9 5 10 6 7 4 11 12 13 13 14 15 16 17 18 19 20 21 22 R-1 R-3 R-4 R-5 R-2 R-6 R-7 R-7 EXPLODED VIEW 14 No

36、tes: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 for spare parts order and s

37、upply, 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-520L ItemCode No.Parts NameSpecificationQR Main PCB 16925 1290Main PCB assyM240438*11 B LSI12012 3430LSI, CPUMSM6755B-071 A LSI22012 3843

38、LSI, ROMMX23C1010MC-12CA451 A IC12105 5922ICRH5VL40AA-T11 A IC22105 4452ICHD74HC174FPTR1 A IC32105 5796ICHD74HC4511FPTR1 A Q1 - Q42259 2555Transistor, Chip, DigitalUMW1NTL4 A Q5 - Q82259 2562Transistor, Chip, DigitalUMS1NTL4 A Q92259 2646Transistor, Chip, DigitalUMH3NTN1 A Q102259 2548Transistor, Ch

39、ip, DigitalDTC143EUAT1061 A Q112252 1239Transistor, Chip2SC4081-T106Q1 A D12390 2576Diode, Chip, SchottkyRB501V-40TE-171 B D32390 1820Diode, Chip1SS355TE-171 B X12590 1526Oscillator, CeramicEFO-EN2005C41 B LED12370 1141LED, 7-seg.SL-9352-601 B Sub PCB 26925 1300Sub PCB assyM140411*11 B IC3012114 289

40、1IC, Power amp.LA45981 A Q3012251 0469Transistor2SB1237Q,R-TV6-T1 A Q302, Q305, 2220 1387Transistor2SC1740SQ-TP-T3 A Q306 Q3042253 0455Transistor2SD1762E,F1 A Q3072200 2449Transistor2SA933SQ-TP-T1 A D301, D302, 2390 1344Diode1SS133T-77-T30 B D305D330, D332, D335 D3042360 1729Diode, ZenerMTZJ5.1A-T77

41、-T1 B D331, D3332390 2408Diode1FWJ43N(TPA3)2 B D334, D3362360 2002DiodeMTZJ5.6B-T77-T2 B LED3012370 1106LEDMPR3338S-B991 C J3013501 7049JackHEC2305-01-3301 B J3023612 0665JackYKB21-50061 B LED PCBs 36925 1320LED PCB assy LD1MM240426*11 C 46925 1330LED PCB assy LD2MM240427*11 C 56925 1340LED PCB assy

42、 LD3MM240428*11 C 66925 1350LED PCB assy LD4MM240429*11 C 76925 1360LED PCB assy LD5MM240430*11 C 2370 1330LEDKR3302X-J345K61 B Keyboard PCB 86925 1310Keyboard PCB assyM140402*21 B D701D725,2301 0101Diode1S2473-T-77-T61 C D731D766 Mechanical Parts 96925 1640Rubber buttonM240413-11 B 106925 1650Rubbe

43、r buttonM240414-11 B 116925 1660Rubber buttonM240374-11 B 126909 5890Slide contactCSB-12D1 B 133831 1043SpeakerS10JA13B2 B 146921 5030Slide knobM311859-11 B 156925 1550Display plateM340415-11 C 166925 1700White key set, LSK-CBM340489*14 A 176925 1710White key set, LSK-CSM340489*21 A 186925 1720Black

44、 key set, LSK-10PM140369-12 A Notes: Q Quantity used per unit R Rank 15 ItemCode No.Parts NameSpecificationQR 196925 1730Black key set, LSK-5PM140369-21 A 206922 3990Key contact rubberM111764-11 A 216922 4000Key contact rubberM111765-11 A 226925 2160Battery coverM340490*11 B Accessory 6916 7880Music standM310827-11 C Notes: Q Quantity used per unit R Rank 16 MA0800761AAug, 1996