Casio_CTK-485_Service_Manual电路图.pdf

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1、ELECTRONIC KEYBOARD CTK-485 CTK-485 MULTI FUNCTION DISPLAYMULTI FUNCTION DISPLAY 100 SONG BANK KEYBOARD SONG BANK CONTROLLER POWER/MODE FINGERED CASIO CHORD NORMAL ON OFF SYNCHRO/ FILL-IN START/ STOP TEMPO TRANSPOSE/TUNE VOLUME 0 5 1 6 2 7 3 8 4 9 + RHYTHM TONELEFT STOPPLAY/ PAUSE ON/OFFRIGHT SONG B

2、ANK TRANSPOSE/ TUNE SONG BANK CONTROLLER PIANO 00 PIANO 1 01 PIANO 2 02 HONKY-TONK 03STUDIO PIANO 04 ELEC PIANO 1 05 ELEC PIANO 2 06 ELEC PIANO 3 07 ELEC PIANO 4 08HARPSICHORD 09 CLAVI ORGAN 10ELEC ORGAN 1 11ELEC ORGAN 2 12ELEC ORGAN 3 13ELEC ORGAN 4 14CHURCH ORGAN 15 PIPE ORGAN 16REED ORGAN 17 ACCO

3、RDION 18BANDONEON 19 HARMONICA GUITAR/BASS 20 GUT GUITAR 21ACOUS GUITAR 22 JAZZ GUITAR 23 ELEC GUITAR 24 MUTE GUITAR 25 DIST GUITAR 26 WOOD BASS 27 ELEC BASS 28 SLAP BASS 29 BANJO STRINGS/ENSEMBLE 30 VIOLIN 31 CELLO 32 HARP 33 STRINGS 1 34 STRINGS 2 35 STRINGS 3 36 SYNTH-STR 1 37 SYNTH-STR 2 38 CHOI

4、R 39 VOICE DOO BRASS 40 TRUMPET 41 TUBA 42 BRASS ENS 43 FR. HORN 1 44 FR. HORN 2 45 BRASS 1 46 BRASS 2 47SYN-BRASS 1 48SYN-BRASS 2 49SYN-BRASS 3 REED/PIPE 50SOPRANO SAX 51 ALTO SAX 52 TENOR SAX 53 OBOE 54 CLARINET 55 PICCOLO 56 FLUTE 57 RECORDER 58 PAN FLUTE 59 WHISTLE SYNTH-SOUND 1 60 SYN-LEAD 1 61

5、 SYN-LEAD 2 62 SYN-LEAD 3 63SYN-CALLIOPE 64 SYN-PAD 1 65 SYN-PAD 2 66 SYN-PAD 3 67BOWED GLASS 68COUNTRY FARM 69 SYN-BASS SYNTH-SOUND 2 70 RAIN DROP 71COSMIC SOUND 72SOUND TRACK 73 SPACE PAD 74 VOICE BASS 75 APPLAUSE 76 SYNTH-SFX 77 VEHICLE 78 PHONE 79 FUNNY LAYER 80 STR PIANO 81 STR E. PIANO 82 CHOI

6、R E. P 83CHOIR ORGAN 84 STR GUITAR 85 STR HARP 86 BRASS STR 87 VIB PAD 88 12 STR GTR 89 CHOIR STR SPLIT/PERCUSSIVE 90 BASS/PIANO 91BASS/E. PIANO 92 BASS/VIB 93BASS/GUT GTR 94 V.BASS/DOO 95 STR/PIANO 96STR/TRUMPET 97 VIBRAPHONE 98 MARIMBA 99 PERCUSSION 100 TONES 55 SANTA LUCIA 56 LA CUCARACHA 57 LA P

7、ALOMA 58 CIELITO LINDO 59 KATIUCHA 60 TROIKA 61 SZTA DZIE WECZKA POLKA THE BARTERED BRIDE62 54 HOLDIRIDIA 100 SONG BANK 63 WALTZING MATILDA 64 AJO MAMMA 65 RASA SAYANG 66N (KANG DING QING GE) 70LE CYGNE LE CARNAVAL DES ANIMAUX 71 SWAN LAKE 72MARCH THE NUTCRACKER 73BRINDISI LA TRAVIATA 74TRIUMPHAL MA

8、RCH AIDA 75 LA DONNA MOBILE 76 TOY SYMPHONY 69 AIR SUITE no.3 77SERENADE EINE KLEINE NACHTMUSIK 78CHANSON DU TOREADOR CARMEN 67 ODE TO JOY 68BRIDAL MARCH LOHENGRIN) 80 LARLESIENNE SUITE 1er PRELUDE 81 JOY TO THE WORLD 82 SYMPHONY no.101 CLOCK 2nd Mov. 83 SPRING THE FOUR SEASONS THAIS MEDITATION84 79

9、 HABANERA CARMEN 85 MINUET (J.S.BACH) 86 GAVOTTE (GOSSEC) 87 CANON (PACHELBEL) 88LARGO (HANDEL) 92 93TURKISH MARCH (MOZART) 94PIANO SONATA K.545 1st Mov. 95 WEDDING MARCH (MENDELSSOHN) 96 HUNGARIAN DANCE no.5 97 THE ENTERTAINER 91 PIANO SONATA op.13 PATHETIQUE 2nd Mov. FUR ELISE 98 NOCTURNE op.9 no.

10、2 (CHOPIN) 99 VALSE op.64 no.1 PETIT CHIEN 89 AMERICAN PATROL 90 CHOPSTICKS 44 AURA LEE 45 JAMAICA FAREWELL 46 JOHNNY COMES MARCHING HOME 47 CAMPTOWN RACES 48 SWANEE RIVER 49JEANNIE WITH THE LIGHT BROWN HAIR 43HOUSE OF THE RISING SUN 50 YANKEE DOODLE 51 RED RIVER VALLEY 52MY OLD KENTUCKY HOME 53 HOM

11、E ON THE RANGE 31WORKING ON THE RAILROAD 32 LITTLE BROWN JUG 33 LONG LONG AGO 34 MICHAEL 35 DOMINIQUE 36 DANNY BOY 37 ANNIE LAURIE 38 ALOHA OE 30GRANDFATHERS CLOCK 39 MY BONNIE 40 CLAP YOUR HANDS 41MY DARLING CLEMENTINE 42SHE WORE A YELLOW RIBBON 20 GREENSLEEVES 21 AMAZING GRACE 22 AULD LANG SYNE 23

12、 TWINKLE TWINKLE LITTLE STAR 24 LIGHTLY ROW 25ACH DU LIEBER AUGUSTIN 26 LONDON BRIDGE 19 O CHRISTMAS TREE 27 JAI PERDU LE DO 28 BATTLE HYMN OF THE REPUBLIC 29SUR LE PONT DAVIGNON 10 SAVING ALL MY LOVE FOR YOU 11THE GIRL FROM IPANEMA 12 YESTERDAY 13ANOTHER DAY IN PARADISE 14HAPPY BIRTHDAY TO YOU 15 W

13、E WISH YOU A MERRY CHRISTMAS 09 CROCODILE ROCK 16 JINGLE BELLS 17 SILENT NIGHT 18 WHEN THE SAINTS GO MARCHING IN 08ALWAYS ON MY MIND 01 IN THE MOOD 02A WHOLE NEW WORLD 03 WHEN YOU WISH UPON A STAR 04 SUPERSTITION 05 I JUST CALLED TO SAY I LOVE YOU 06 TOP OF THE WORLD 00HOW DEEP IS YOUR LOVE 07 KILLI

14、NG ME SOFTLY WITH HIS SONG 00-19 POPS POPS/BALLAD/16 BEAT/8 BEAT 20-39 ROCK SLOW ROCK/SOFT ROCK/SOUL/ROCK/R 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

15、with two built-in DACs. The CPU also controls key and button input. The following table shows the pin functions of LSI1. 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, NC2No

16、t used 30DGNDInGround (0 V) source 31DVCCIn+5 V source 32, 33XTLO, XTLIIn/Out20 MHz clock input/output 34NC3Not used 35RSTBInReset signal input 36, 37P24/RXD, P25/TXDNot used 38NMIInPower ON signal input. Connected to +5 V. 39APOOutAPO (Auto Power Off) signal output 40NC4Not used 41REFHOutTerminal f

17、or 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 50AGadcInGround source fo

18、r 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. 57P40Not used 58 65KI0/P30 KI7/P37InTerminals for key/button input signal 66 73KO0

19、/P50 KO7/P57OutTerminals for key scan signal 74 77DB4 DB7OutData bus for the LCD driver 78NC9Not used 79LVCCIn+5 V source 6 LCD DRIVER (LSI3: KS0066U-10B) 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 g

20、enerator ROM, and stores 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 80 84KO8 KO12OutTerminals for butt

21、on 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.TerminalIn/OutFunction 1 22, 63 80 23VSSGND (0 V) so

22、urce 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, 32LP, XCLSNot used 33VDDInDVDD (+5 V) source 34, 35

23、FR, 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 to GND (0 V) 43 46DB4 DB7In/OutData bus 47 62COM1 CO

24、M16OutCommon signal/output SEG1 SEG40OutSegment signal output 24, 25OSC1, OSC2In/Out 36RSIn 7 POWER AMPLIFIER (IC101: LA4598) The power amplifier is a two-channel amplifier with standby switch. The following table shows the pin function of IC101. FILTER BLOCK Since the sound signals from the CPU is

25、stepped waveforms, the filter block is added to smooth the waveforms. Amp. LA4598 Filter Block CPU MSM6755B-17 Pin No.TerminalIn/OutFunction 1PowerGNDIn Ground (0 V) source 2Ch1 B.S.Terminal for a bootstrap capacitor 3Ch1 OUTOutChannel 1 output 4VCCIn+9 V source 5Ch1 N.F.InNegative feedback input 6C

26、h1 INInChannel 1 input 7D.C.Terminal for a decoupling capacitor 8Pre GNDInGround (0 V) source 9Stand byInPower control signal input. 0 V: Off, +9 V: On 10Ch2 INInChannel 2 input 11Ch2 N.F.InNegative feedback input 12Ch2 OUTOutChannel 2 output 13Ch2 B.S.Terminal for a bootstrap capacitor 14NCNot used

27、 8 INITIAL RESET CIRCUIT When batteries are set or an AC adapter is connected, the reset IC provides a low pulse to the CPU. The CPU then initializes its internal circuit. CPU MSM 6755B-17 LSI1 RESET Reset IC RN5VD40A IC1 VDD Battery Set TROUBLESHOOTING Nature of Trouble No power No sound at all Cer

28、tain keys or switches do not function A certain key or switch does not function Faulty Block Power supply circuit Power switch Power jack (J101) Power Amp (IC101: LA4596) CPU (LSI1: MSM6755B-17) Oscillator Key and switch matrix CPU (LSI1: MSM6755B-17) Key and switch matrix Cause/Remedy Faulty IC101.

29、 Replace IC101. Faulty D104 D106. Replace D104 D106. Faulty Q101 Q104. Replace Q101 Q104. Poor contact. Clean the contacts. Open J101 or poor soldering. Replace J101 or resolder. Open or shorted IC101. Replace IC101. Faulty LSI1. Replace LSI1. Faulty Q1. Replace Q1. Open X1. Replace X1. Open circuit

30、 on KO or KI line.Replace keyboard PCB assembly. Faulty LSI1. Replace LSI1. Dust on the contact. 9 3) Equipment connection/Procedure ADJUSTMENT MAIN PCB 1) Items to be adjusted: 2) Adjustment and Test Point Locations ItemMeasuring Instrument Vop voltage settingVoltmeter TP2 (Top View)(Bottom View) V

31、R1 Vop voltage setting Watching the LCD at a 41.20 angle to the horizontal, adjust Vop voltage so that unenergized segments are seen dimly. Output SetVoltmeter TP2 41.20 LCD Eye Input Connection Input Point Input Signal Adjust Output Connection Output Point Adjust for VR1VoltmeterTP2Adjust for 4.2 4

32、.3 V reading on voltmeter under the tem- perature 20 25 C. Make fine adjustment accord- ing to the following instruc- tion. 10 MAJOR WAVEFORMS 0.1 s CH1 CH15VBWL 1 RESET signal IC 1 pin 1 1 20 s CH1 BWLCH11V 2 2 Main clock pulse MSM6755B-17 pin 32 10 s CH1 CH2 CH2BWLCH15V5V 3 Key scan signal KO10 MS

33、M6755B-17 pin 72 4 Key scan signal KO11 MSM6755B-17 pin 73 3 4 1ms CH2 CH1 BWLCH11V1VCH2 5 Sound signal output (L-ch) MSM6755B-17 pin 47 6 Sound signal output (L-ch) Q106 2SC1740SQ Emitter 5 6 1ms CH1 CH2 BWLCH11VCH2 1V 1ms CH1 CH2 BWLCH11V1VCH2 7 Sound signal output (R-ch) MSM6755B-17 pin 44 8 Soun

34、d signal output (R-ch) Q107 2SC1740SQ Emitter 9 0 9 Sound signal output (R-ch) LA4598 pin 3 0 Sound signal output (L-ch) LA4598 pin 12Tone: Flute Ensemble Key: A3 Volume: 7 7 8 11 PRINTED CIRCUIT BOARDS Main PCB JCM450-MA1M Top View Bottom View 1 275 3 4 12 Keyboard PCB KDM6111K-KY1M Keyboard PCB KD

35、M6111K-KY2M Main PCB JCM450-MA2M 68910 13 SCHEMATIC DIAGRAMS Main PCB JCM450-MA1M 1 2 7 5 3 4 14 Main PCB JCM450-MA2M 8 6 910 (2.9 V) (5.3 V) (0.7 V) 15 Keyboard PCBs KDM6111K-KY1M/KY2M Notes: 1. All capacitance values are indicated in F (p=10-6 F). 2. All resistance values are indicated in (k=103,

36、M=106). 16 EXPLODED VIEW 13 14 9 8 6 15 18 5 12 4 17 6 1 19 10 11 3 2 7 16 R-1 R-2 R-4 R-5 R-6 R-3 R-6 R-5 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 refurbis

37、h. 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-485 ItemCode No.Parts NameSp

38、ecificationQR Main PCB 16926 6310PCB ASSY/M450-MA1MM240821*11B 26926 6320PCB ASSY/M450-MA2MM140731*11B D12390 1820DIODE/CHIP1SS355TE-171C D1012390 3021DIODESRT141C D1022390 3018DIODE1T21C D103,D104 D106 - D114 2390 1344DIODE1SS133T-77-T11C D1052360 1939DIODEMTZJ5.1CT-77-T1C IC12012 1883IC/MOSRN5VD40

39、AA-TR1B IC1012114 2891IC/LINEARLA45981B J1013501 7049JACK/POWERHEC2305-01-3301C J1023612 0665JACK/PHONEYKB21-50061C L1023841 2051INDUCTORLAN02TA100J1C LED1012320 3146LEDTLR1241C LSI12012 5603LSIMSM6755B-171A LSI22012 5937LSILC372100PM-H78TE-L1A LSI32012 5935LSIKS0066U-10B1A Q1 / Q32252 1239TRANSISTO

40、R2SC4081T106Q2B Q1012200 2481TRANSISTOR2SA854SR-TP-T1B Q102, Q104 - Q1072220 1409TRANSISTOR2SC1740SR-TP-T5B Q1032250 1591TRANSISTOR2SB1237TV2R1B Q22250 1162TRANSISTOR2SA1576AT106R1B VR12775 0994VOLUME/SEMI-FIXEDEVND8AA03B531C X12590 2741OSCILLATOR/CERAMICCSACV20.00MXJ040-TC1C Console PCB assy 36925

41、1310PCB ASSY/KYM140402*41B D701 - D7252301 0101DIODE1SS247325C D731 - D7662301 0101DIODE1SS247336C Mechanical Parts 46926 6790PANEL/DISPLAYM340785-11C 56909 5890KNOBCSB-12D1C 63831 0665SPEAKER10G42AFA2B 73335 6677LCDCA480-TS1A 86922 2740KEY SET/BLACK 10-KEYM111726-12A 96922 2750KEY SET/BLACK 5-KEYM1

42、11726-21A 106922 3990RUBBER/CONTACTM111764-11B 116922 4000RUBBER/CONTACTM111765-11B 126921 5030KNOB/SLIDEM311859-11C 136922 2720KEY SET/LT-CB WHITEM312118*14A 146922 2730KEY SET/LT-CB WHITEM312118*21A 156926 6750RUBBER/BUTTONM340417-41C 166926 6760RUBBER/BUTTONM340418-31C 176925 9840COVER/BATTERYM340485*21C 186926 6770RUBBER/BUTTONM340783-11C 196926 6780INTERCONNECTORM440581-12C Accessary 6916 7880STAND/MUSICM310827-11C Notes: Q Quantity per unit R Rank 17 CASIO TECHNO CO.,LTD. Overseas Service Division 8-11-10, Nishi-Shinjuku Shinjuku-ku, Tokyo 160-0023, Japan