Casio_CPS-85_Service_Manual电路图.pdf

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1、CPS-85 CPS-85 ELECTRONIC KEYBOARD POWERVOLUME TRANSPOSE OFFONMINMAX F#G ABCDEABC#EF DIGITAL EFFECTTONEMEMORY PIANO 1 PIANO 2 E. PIANO 1 E. PIANO 2 HARPSI- CHORD VIBRA- PHONE PIPE ORGAN JAZZ ORGAN STRINGS SYNTH- STRINGS SELECTSONG A SONG BRECORDSTOPSTART CONTROLDEMO 1510152025 RadioFans.CN 收音机爱 好者资料库

2、 1 CONTENTS Page Specifications . 1 Block Diagram. 3 Circuit Description . 4 Major Waveforms . 11 Printed Circuit Boards . 12 Schematic Diagrams . 13 Exploded View . 19 Parts List . 21 SPECIFICATIONS GENERAL Keyboard:88 full size keys with initial touch response Polyphony:24 notes maximum Tones:10 (

3、with layering) Tuning curves:3 types (preset for each tone) Digital effects:REVERB Demo tunes Number of tunes:10 Titles:1. Grande valse brillante 2. Turkish March 3. One-Eighty 4. Opaque Mist 5. Harmonious blacksmith 6. Dream Sequence 7. Fugue in G minor 8. Moveable Blues 9. Rainbow 10. Ave Maria Pl

4、ayback:Repeat sequential play of all tunes; playback always starts from begin- ning of tune Manual memory Type:Real-time recording and playback Number of songs:2 (SONG A, SONG B) Capacity:Approximately 1,200 notes (SONG A + SONG B) Back-up:Power supplied by batteries or AC adaptor Pedal:Damper Other

5、 featuresTranspose (1 octave, semitone steps) Tuning (adjustable, A4 = 440 Hz 50 cents) MIDI:8-channel multi-timbre reception Speakers:14 cm 2 (6 W + 6 W) Terminals:PHONES (standard stereo jack 1) LINE OUT (standard mono jack 2) Output impedance: 1.0 K Output voltage: 1.5 V (RMS) MAX LINE IN (standa

6、rd mono jack 2) Input impedance: 47 K Sensitivity:200 mV MIDI OUT/IN (DIN jack 2) RadioFans.CN 收音机爱 好者资料库 2 ELECTRICAL Current drain with 12 V DC: No sound output240 mA 20 % Maximum volume with 24 keys from C1 to B2 pressed in Jazz organ tone2050 mA 20 % Volume: maximum, Touch response: maximum Phon

7、e output level (Vrms with 8 load each channel): with key E3 pressed in Jazz organ toneL-ch60 mV 20 % R-ch65 mV 20 % Speaker output level (Vrms with 4 load each channel): with key E3 pressed in Jazz organ toneL-ch860 mV 20 % R-ch920 mV 20 % Lineout output level (Vrms with 47 k load each channel): wit

8、h key B5 pressed in Jazz organ toneL-ch140 mV 20% R-ch160 mV 20% Minimum operating voltage:6.5 V DAMPER PEDAL (standard mono jack 1) DC 12 V (DC jack 1) Power supplyDual power supply system Batteries:6 D-size batteries Battery life:Approximately 4 hours on manganese batteries AC adaptor:AD-12 Auto p

9、ower off:Turns power off approximately 5 minutes after last key operation. Enabled under battery power only, can be disabled manually. Power consumption:18 W Dimensions (HWD):100 1372 414 mm (without stand) (3-15/16 54-1/16 16-5/16 inches) Weight:Without stand and excluding batteries 16.8 kg (37.1 l

10、bs) RadioFans.CN 收音机爱 好者资料库 3 BLOCK DIAGRAM Buttons Keyboard FI0 FI10 SI0 SI10 KC0 KC7 KI0 KI2 MIDI INOUT Working Storage RAM (64K-bit) LSI2 HY6264ALLJ-70 MA0 MA12 MD0 MD7 MD0 MD15 MA1 MA19 Sound Source ROM (8M-bit) LSI3 MX23C1610MC-12 CPU LSI4 GT913F BCK, SO, LRCKMA0, MA1 EA0 EIO0 EA14 EIO7 Effect

11、RAM (256K-bit) LSI5 TC55257DFL-70L DSP LSI1 HG51B277FB LEDs VDD SONGA SONGB DIGITAL EFFECT SELECT STOP LRCKSO RmelLmel BCK D/A Converter LSI6 UPD6379GR Filter IC104 Main Volume Power Amplifier IC101 LA4620 Output Speakers Reset IC IC 1 RN5VD35AA Pre. Amp. IC103 Line In POWER (APO) Power Supply Circu

12、it Q101 Q106 D108, D110, D111 6 D-size batteries AC adaptor AD-12 From CPU Line Out AVCCVDDVCCAVDDLVDD 4 CIRCUIT DESCRIPTION KEY MATRIX Note: Each key has two contacts, the first conatct (1) and second contact (2). Key Second contact (2)First contact (1) KC SI FI 0CK1CK2CK3CK4CK5CK6CK7CK 0IF)1(0A)1(

13、0#A)1(0B)1(1C)1(1#C)1(1D)1(1#D)1(1E 0IS)2(0A)2(0#A)2(0B)2(1C)2(1#C)2(1D)2(1#D)2(1E 1IF)1(1F)1(1#F)1(1G)1(1#G)1(1A)1(1#A)1(1B)1(2C 1IS)2(1F)2(1#F)2(1G)2(1#G)2(1A)2(1#A)2(1B)2(2C 2IF)1(2#C)1(2D)1(2#D)1(2E)1(2F)1(2#F)1(2G)1(2#G 2IS)2(2#C)2(2D)2(2#D)2(2E)2(2F)2(2#F)2(2G)2(2#G 3IF)1(2A)1(2#A)1(2B)1(3C)1(

14、3#C)1(3D)1(3#D)1(3E 3IS)2(2A)2(2#A)2(2B)2(3C)2(3#C)2(3D)2(3#D)2(3E 4IF)1(3F)1(3#F)1(3G)1(3#G)1(3A)1(3#A)1(3B)1(4C 4IS)2(3F)2(3#F)2(3G)2(3#G)2(3A)2(3#A)2(3B)2(4C 5IF)1(4#C)1(4D)1(4#D)1(4E)1(4F)1(4#F)1(4G)1(4#G 5IS)2(4#C)2(4D)2(4#D)2(4E)2(4F)2(4#F)2(4G)2(4#G 6IF)1(4A)1(4#A)1(4B)1(5C)1(5#C)1(5D)1(5#D)1

15、(5E 6IS)2(4A)2(4#A)2(4B)2(5C)2(5#C)2(5D)2(5#D)2(5E 7IF)1(5F)1(5#F)1(5G)1(5#G)1(5A)1(5#A)1(5B)1(6C 7IS)2(5F)2(5#F)2(5G)2(5#G)2(5A)2(5#A)2(5B)2(6C 8IF)1(6#C)1(6D)1(6#D)1(6E)1(6F)1(6#F)1(6G)1(6#G 8IS)2(6#C)2(6D)2(6#D)2(6E)2(6F)2(6#F)2(6G)2(6#G 9IF)1(6A)1(6#A)1(6B)1(7C)1(7#C)1(7D)1(7#D)1(7E 9IS)2(6A)2(6

16、#A)2(6B)2(7C)2(7#C)2(7D)2(7#D)2(7E 01IF)1(7F)1(7#F)1(7G)1(7#G)1(7A)1(7#A)1(7B)1(8C 01IS)2(7F)2(7#F)2(7G)2(7#G)2(7A)2(7#A)2(7B)2(8C 0IK LATIGID TCEFFE /1ONAIP 2ONAIP /1ONAIP.E 2ONAIP.E -CISPRAH /DROH -HPARBIV ENO EPIP /NAGRO ZZAJ NAGRO /SGNIRTS HTNYS SGNIRTS TCELES /AGNOS BGNOS 1IKDROCERLORTNOCOMED -

17、OPSNART #FES -OPSNART #GES -OPSNART #AES -OPSNART DES -OPSNART EES 2IKPOTSTRATS -OPSNART GES -OPSNART AES -OPSNART BES -OPSNART #CES 5 NOMENCLATURE OF KEYS POWER SUPPLY CIRCUIT The power supply circuit generates five voltages as shown in the following table. VDD voltage is always generated. The othe

18、rs are controlled by POWER signal from the CPU. 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, and clears the working storage RAM. When the power switch is pressed, the CPU receives a lo

19、w level signal. The CPU sends POWER signal to the power supply circuit, also sends a reset signal to the DSP. When the keyboard is powered by batteries and no operation is made for six minutes, CPU drops signal POWER to shut all the voltage except VDD off. C2 C#2 D#2F#2G#2A#2C#3 D#3F#3 G#3 A#3C#4 D#

20、4F#4 G#4 A#4C#5 D#5F#5 G#5 A#5C#6 D#6F#6 G#6 A#6C#7 D#7F#7 G#7 A#7 D2 E2 F2 G2 A2 B2C1 D1 E1 F1 G1 A1 B1A0 B0C3 D3 E3 F3 G3 A3 B3 C#1 D#1F#1G#1A#1A#0 C4 D4 E4 F4 G4 A4 B4 C5 D5 E5 F5 G5 A5 B5D6 E6 F6 G6 A6 B6C6C7 D7 E7 F7 G7 A7 B7 C8 Reset IC IC1 RN5VD35AA DSP LSI1 HG51B277FB VDD Reset signal To pow

21、er supply circuit VDD Battery set RESET VDD Power switch NMI POWER PLE CPU LSI4 GT913F SCKO emaNega t l oVfono i t areporoF DDVV5+MAR t c e f f E,MARegaro t s gn i kroW,MORecruosdnuoS,PSD,CIteseR,UPC DDVAV5+skc a j n i en i L,CAD DDVLV5+pma l to l iP CCVV9+re i f i l pmarewoP , s kca j tuoen i L CCV

22、AV9+.pmAerP 6 CPU (LSI4: GT913F) The 16-bit CPU contains a 1k-byte RAM, three 8-bit I/O ports, two timers, a key controller and serial interfaces. The CPU detects key velocity by counting the time between first-key input signal FI and second-key SI from the keyboard. The CPU reads sound data and vel

23、ocity data from the sound source ROM in accordance with the selected tone; the CPU can read rhythm data simultaneously when a rhythm pattern is selected. Then the CPU provides 16-bit serial sound data to the DSP. The CPU also controls MIDI input/output and stores sequencer data into the working stor

24、age RAM. The following table shows the pin functions of LSI4. .oNniPlanimreTtuO/nIno i t cnuF 10DXTtuOtuptuo l a ng i sIDIM 20DXRnItupn i l ang i sIDIM 30KCStuOtuptuo l a ng i s)FFOrewoPotuA;OPA(REWOP 41DXT.dnuorgotde t c ennoC.desutoN 51DXRnItupn i l ang i sNOrewoP 61KCStuOtuptuoes l upgn i z i nor

25、hcnysZHM1 97 ,0NA,CCVA 1NA .dnuorgotde t c ennoC.desutoN 01DNGAnIecruos)V0(dnuorG 11KCBtuOtuptuokco l c t i B 21OStuOtuptuoataddnuosl a i reS 31KCRLtuOtuptuokco l cdroW 41DNGnIecruos)V0(dnuorG 61,511TLX,0TLXtuO/nItuptuo / t up n i kco l czHM42 71CCVnIecruosV5+ 91,811DOM,0DOMnI.dnuorgotde t c ennoC.

26、l a n i mretno i t ce l esedoM 02BTSRnItupn i l ang i steseR 12IMNnItupn i l ang i sNOrewoP 22TNIdnuorgotde t c ennoC 0332 3IF0IF 3IS0IS nI l a ng i stup n i yekrof l a n i mreT 83137CK0CKtuO l a ng i snacsyekrof l a n i mreT 2593 01IF4IF 01IS4IS nI l a ng i stup n i yekrof l a n i mreT 55352IK0IKnI

27、l ang i stup n i no t t ubrof l a n i mreT 65BNWMtuOPSDehtrof l ang i se l baneet i rW 677591AM0AMtuOsubsserddA 770BSCMtuOMORecruosdnuosehtroftuptuo l a ng i se l banep i hC 871BSCMtuOdesutoN 972BSCMtuOPSDehtroftuptuo l a ng i se l banep i hC 08CCVnIecruosV5+ 18DNGnIecruos)V0(dnuorG 28BDRMtuOMORecru

28、osdnuosehtroftuptuo l a ng i se l banedaeR 893851DM0DMtuO/nIsubataD 99ELPnI lanimreteht, rotpadaCAnaybderewops idraobyekehtnehW l a ng i s f f orewopotuadnestonseodUPCehttahtost l ov0semoceb . t i ucr i cy l ppusrewopehtot 00171PnItupn i l adeP 7 DIGITAL SIGNAL PROCESSOR (LSI1: HG51B227FB) The DSP r

29、eceives 16-bit serial sound data from the CPU and adds the selected effect to the sound data using the effect RAM. Then the DSP provides the sound data to the DAC. The DSP also drives LEDs. The following table shows the pin functions of LSI1. .oNniPlanimreTtuO/nIno i t cnuF 08,414BP0BP.dnuorgotde t

30、c ennoC.desutoN 5OStuOCADehtroftuptuoataddnuosl a i reS 6OKCWtuOCADehtroftuptuokco l cdroW 73DDVnIecruosV5+ 8TSETdesutoN 9BSERnItupn i l ang i steseR 012SSVnIecruos)V0(dnuorG 21,11TUOX,NIXtuO/nItuptuo / t up n i kco l czHM61 31IKCWnIUPCehtmo r f tup n i kco l cdroW 41ISnIUPCehtmo r f tup n i ataddnu

31、osl a i reS 51IKCBnIUPCehtmo r f tup n i kco l c t i B 61CNISnItup n i es l upgn i z i norhcnyszHM1 712DDVnIecruosV5+ 52817OI0OItuO/nIsubataD 62BECRtuOMARegaro t s gn i krowehtroftuptuo l a ng i se l banep i hC 723SSVnIecruos)V0(dnuorG 821DAnIsubsserddA 92BEO.dnuorgotde t c ennoC.desutoN 03BEWnI l a

32、 ng i se l baneet i rW 133DDVnIecruosV5+ 232ECnI.ev i t cah g i H . t upn i l ang i se l banep i hC 330DAnIsubsserddA 43B1ECnI.ev i t cawoL . t upn i l ang i se l banep i hC 34,14537OIE0OIEtuO/nIMAR t c e f f eehtrofsubataD ,8464,44,24 16,9515 41AE0AEtuOMAR t c e f f eehtrofsubsserddA 54BECEtuOMAR t

33、 c e f f eehtroftuptuo l a ng i se l banep i hC 94BEOEtuOMAR t c e f f eehtroftuptuo l a ng i se l banedaeR 053SSVnIecruos)V0(dnuorG 06BEWEtuOMAR t c e f f eehtroftuptuo l a ng i se l baneet i rW 87,47,07,66,262SSVnIecruosdnuorG 97,57,17,76,362DDVnIecruosV5+ ,96,86,56,46 37,27 5AP0APtuOtuptuo l a ng

34、 i snacsno t t uB 77,677/6APtuOdesutoN 8 FILTER BLOCK Since the sound signals from the DAC are stepped waveforms, the filter block is added to smooth the waveforms. DAC (IC1: UPD6379GR) The DAC receives 16-bit serial data output from the DSP. The data contains digital sound data of the melody, chord

35、, bass, and percussion for the right and left channels. The DAC converts the data into analog waveforms and output them to each channel separately. Synch signal Data Word clock Bit clock Data Word clock Bit clock DSP LSI1 HG51B277FB DAC LSI6 UPD6379GR CPU LSI4 GT913F L OUT R OUT SI LRCK CLK SO WCKO

36、SCK1 SO LRCK BCK SINC SI WCKI BCKI AVCC Left L Right From DAC From DAC To main volume To main volume R AVCC 10 F 10 F 15 V10 15 V10 10 K C472(H) C472(H) 100 K 2.7 K R154 100 K C152(H) C221B(A) C152(H) C221B(A) 2.2 K 10 K10 K 10 K10 K10 K AGAG M5218APR (1/2) 2 IC104 AG AG AG AG 2 2 + + 1 2 3 4 5 6 7

37、8 9 POWER AMPLIFIER (IC101 : LA4620) The power amplifier is a two-channel amplifier with standby switch. 6 162101113 12 Pre-drive Amp. Input Amp. Power Amp. + Pre-drive Amp. Input Amp. Power Amp. + 9 7 3 5 + Input Amp. Pre-drive Amp. Power Amp. + Input Amp. Pre-drive Amp. Power Amp. 4 19 20 21 22 23

38、 1 18 17 15 14 8 RL Short Protector RL Short Protector Terminal Protection Circuit Pop Noise Prevention Circuit Ripple Filter IN11+ IN11 IN12 IN21+ IN21 IN22 NCDCMUTEADJ Boot11 OUT11 PoGND1 OUT12 Boot12 VCC1 Boot21 OUT21 PoGND2 OUT22 Boot22 VCC2 PriGND 11 MAJOR WAVEFORMS 1 ADP (POWER) signal JE conn

39、ector pin 5 2 NMI signal JE connector pin 7 3 KC0 signal JD connector pin 15 4 KC1 signal JD connector pin 14 5 CE (MCSBO) signal LSI3 pin 12 6 OE (MRDB) signal LSI3 pin 14 7 DAC output (L-ch) JE connector pin 12 8 DAC output (R-ch) JE connector pin13 9 Sound signal (L-ch) JF connector pin 7 0 Sound

40、 signal (R-ch) JF connector pin 8 Tone : Strings Key : A4 Reverb : ON Volume : Maximum Touch response : Maximum 1 2 3 4 5 6 7 8 9 0 Power ON 12 PRINTED CIRCUIT BOARDS Main PCB JCM423-MA1MSub PCBs JCM423-MA2M/MA3M/MA4M Bottom View Top View Top View 8 7 2 1 3 4 6 5 910 13 SCHEMATIC DIAGRAMS Main PCB J

41、CM423-MA1M 12 87 65 3 4 14 Sub PCBs JCM423-MA2M/MA3M/MA4M 10 9 15 Console PCBs JCM423-CN1M/CN2/CN3M 16 Keyboard PCB JCM886T-KY1M 17 Keyboard PCB JCM886T-KY2M 18 Keyboard PCB JCM886T-KY3M 19 EXPLODED VIEW 27 24 3 22 23 2 28 R-1 29 26 17 9 10 25 22 21 23 4 15 20 7 6 8 1 R-2 R-3 5 19 18 14 16 11 12 13

42、R-4 20 35 33 35 31 30 34 32 SP-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 notic

43、e. 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 CPS-85 ItemCode No.Parts NameSpecificationQR Main PCB 16925 9150PCB/ASSY (MA1M)M240661*11A LSI12012 4494LS

44、I,DSPHG51B277FB-11A LSI22012 1764LSI/S-RAMLC3564SM-85-TRM1A LSI32012 5669LSI/MASK-ROMUPD23C16000WGX-C541A LSI42012 5005LSI,CPUGT913F(T)1A LSI52012 5572LSI/S-RAMTC55257DFL-70L(EL)1A LSI62105 4746LSI/D/A CONVERTERUPD6379GR-E11A IC12105 6340IC/MOS (RESET IC)RN5VD35AA-TR1B Q12252 0637TRANSISTOR2SC4081-T

45、106R1B Q22250 1162TRANSISTOR2SA1576A-T106R1B X12590 2387OSCILLATOR/CRYSTALHC-49/US24B1A X22590 2079OSCILLATOR/CERAMICCSACS16.00MX040-TC1A Sub PCB 26925 9180PCB/ASSY (MA2,3,4M)M140596*11B IC1012114 1883IC/LINEARLA46201A IC102 1042114 1799IC/LINEARM5218APR3B IC1052252 1248IC/PHOTO COUPLERHCPL-261A1B Q

46、1012251 0672TRANSISTOR2SB1548-P.CS1A Q102,Q104106, Q109111 2220 1387TRANSISTOR2SC1740SQ-TP-T7A Q1032250 0168TRANSISTOR2SA854-SR-TP-T1A Q107/1082253 0420TRANSISTOR2SD1468SR.S-TP-T2A D101/1022390 1463DIODE,SCHOTTKYSB20-03B2B D102/103/107, D109/113 2390 1344DIODE1SS133T-77-T5B D104/105/D1112360 1946DIODE/ZENERMTZJ5.6CT-77