Casio_CTK-620L_Service_Manual电路图.pdf

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1、ELECTRONIC KEYBOARD CTK-620L CTK-620L ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? TEMPO SYNCHRO/ENDINGINTROVOLUMEMODE POWER MAX FULL RANGE CHORD FINGERED CASIO CHORD NOMAL MINNORMAL/FILL-IN VARIATION/FILL-IN START/STOP REVERB TOUCH

2、RESPONSE METRONOME BEAT ACCOMP VOLUME RHYTHMS TONE SONG BANK DEMO SONG BANK TONE 789 456 123 0 123 RHYTHM TRACK 1 LEFT STEP 1 STEP MEMORY SPLIT LAYER TRANSPOSE/ TUNE/MIDI STEP 2STEP 3 TRACK 2 RIGHT 3-STEP LESSON REST 3(TIE) REVERB MUSICAL INFORMATION SYSTEM SONG BANK CONTROLLER KEY LIGHT HALL STAGE

3、ROOM TOUCH RESPONSE KEY LIGHT STOPPLAY/PAUSEREWFF GM LAYER SPLIT MEMORY STEP 100 SONG BANK 137 TONES 100 RHYTHMS RadioFans.CN 收音机爱 好者资料库 1 SPECIFICATIONS GENERAL Keyboard:61 standard-size keys, 5 octaves (with touch response on/off) Key light system:Can be turned on and off (up to 10 keys can be lit

4、 at the same time) Tones:137 (128 General MIDI tones + 9 drum tones); with layer and split Rhythm instrument tones:61 Polyphony:24 notes maximum (12 for certain tones) Digital effects:3 reverb types (HALL, STAGE, ROOM) Auto accompaniment Rhythm patterns:100 Tempo:Variable (216 steps, = 40 to 255) Ch

5、ords:3 fingering methods (CASIO CHORD, FINGERED, FULL RANGE CHORD) Rhythm controller:START/STOP, INTRO, NORMAL/NORMARL FILL-IN, VARIATION/ VARIATION FILL-IN, SYNCHRO/ENDING Accomp volume:0 to 127 (128 steps) 3-step lesson:3 lessons (step 1, 2, 3) Playback:Repeat play of a single tune Song bank Numbe

6、r of tunes:100 Controllers:PLAY/PAUSE, STOP, FF, REW, LEFT, RIGHT Musical information function:Tone, Auto Accompaniment, Song Bank numbers and names; staff nota- tion, tempo, metronome, measure and beat number, step lesson display, chord name, dynamic mark, fingering, pedal operation Metronome:On/Of

7、f Beat specification:1 to 6 Memory Songs:2 Recording tracks:2 Recording methods:Real-time, step Memory capacity:Approximately 5,200 notes (total for two songs) MIDI:16 multi-timbre receive, GM Level 1 standard Other functions Transpose:25 steps (12 semitones to +12 semitones) Tuning:101 steps (A4 =

8、approximately 440 Hz 50 cents) Terminals MIDI terminals:IN, OUT Assignable jack:Standard jack (sustain, sostenuto, soft, rhythm start/stop) Headphone/output terminal:Stereo standard jack Output Impedance:100 Output voltage:4.5 V (RMS) MAX CONTENTS Page Specifications. 1 Block Diagram. 3 Circuit Desc

9、ription. 4 Adjustment . 12 Major Waveforms . 13 Printed Circuit Boards . 14 Schematic Diagrams . 15 Exploded View . 28 Parts List . 29 RadioFans.CN 收音机爱 好者资料库 2 ELECTRICAL Current drain with 9 V DC: No sound output200 mA 20 % Maximum volume1090 mA 20 % with 10 keys from F1 to A2 pressed in French Ho

10、rn Volume: maximum, Touch response: maximum Reverb: stage Speaker output level (Vrms with 4 load each channel): with key C1 for R-ch, F1 for L-ch in French Horn Volume: maximun, Touch response: maximum2300 mV 20 % Reverb: stage Phone output level (Vrms with 8 load each channel): with key C1 for R-ch

11、, F1 for L-ch in French Horn Volume: maximun, Touch response: maximum180 mV 20 % Reverb: stage Output level (Vrms with 47 load each channel): with key C1 for R-ch, F1 for L-ch in French Horn Volume: maximun, Touch response: maximum2600 mV 20 % Reverb: stage Minimum operating voltage:6.3 V About Gene

12、ral MIDI General MIDI standardizes MIDI data for all sound source types, regardless of manufacturer. General MIDI specifies such factors as tone numbering, drum sounds, and available MIDI channels for all sound sources. This standard makes it possible for all MIDI equipment to reproduce the same nua

13、nces when playing General MIDI data, regardless of the manufacturer of the sound source. This keyboard supports General MIDI, so it can be used to play commercially available pre-recorded General MIDI data and General MIDI data send to it from a personal computer. Power jack9 V DC Power supply:2-way

14、 Batteries:Six D-size batteries Battery life:Approximately 5 hours continuous operation on manganese batteries AC adaptor:AD-5 Auto power off:Turns power off approximately six minutes after last key operation. En- abled under battery power only, can be disabled manually. Speaker output:2.5 W + 2.5 W

15、 Power consumption:9 V - 7.7 W Dimensions (HWD):96.1 39.1 14.4 cm (37 7/8 15 3/8 5 11/16 inches) Weight:Approximately 6.0 kg (13.25 lbs) (without batteries) RadioFans.CN 收音机爱 好者资料库 3 BLOCK DIAGRAM KC0 KC7 FI0 FI7 SI0 SI7 KI0 KI2 MD0 3 L0 L20 L21 L23 MA0 2 PO10, PO17 PO22, PO23 PA4 PA6 Working Storag

16、e RAM (256K-bit) LSI4 TC55257DFL-70L(EL) MIDI EA0 EA14 EIO0 EIO7 Sound Source ROM (24M-bit) LSI3 LH536PNV LRCK SO BCK D/A Converter LSI6 UPD6379GR-E1 Filter Q213 Q216 Main Volume Power Amplifier IC201 TA8229K Keyboard LED Illuminant MA0 MA19 MCSB0 MCSB0, 1 MA19 Power Supply Circuit Q201 Q208, D206 2

17、08, D210 VCCAVDDVDDVC DVDDVLCCLVDDLCDD APO L OUTR OUT Effect RAM (256K-bit) LSI5 TC55257DFL- 70L(EL) MD0 MD7 Speakers (L) (R) Phones/ Output MA0 MA14 MA0, MA1 LRCK, SO BCK, SINK LCD LCD Driver LSI401 SED1278F0A SEG1 SEG40 INOUT Reset IC IC1 RN5VD40AA Chip Selector IC2,3 RESET COM1 COM16 DSP LSI2 HG5

18、1B277FB-1 MD0 MD15 Buttons Assingnable Jack PB4 VDD Power SwitchNMI LCBE FI9 FI10 PA0, PA1 PB0 PB3 LED Driver Q1 Q11 LED Driver Q12 Q14 CPU LSI1 GT913F(T) GA LSI7 UPD65005 GF-419 ECEB CE1B RACEB RDCEB 4 CIRCUIT DESCRIPTION KEY MATRIX BUTTON MATRIX KC0KC1KC2KC3KC4KC5KC6KC7 FI0C2 (1)C#2 (1)D2 (1)D#2 (

19、1)E2 (1)F2 (1)F#2 (1)G2 (1) SI0C2 (2)C#2 (2)D2 (2)D#2 (2)E2 (2)F2 (2)F#2 (2)G2 (2) FI1G#2 (1)A2 (1)A#2 (1)B2 (1)C3 (1)C#3 (1)D3 (1)D#3 (1) SI1G#2 (2)A2 (2)A#2 (2)B2 (2)C3 (2)C#3 (2)D3 (2)D#3 (2) FI2E3 (1)F3 (1)F#3 (1)G3 (1)G#3 (1)A3 (1)A#3 (1)B3 (1) SI2E3 (2)F3 (2)F#3 (2)G3 (2)G#3 (2)A3 (2)A#3 (2)B3

20、 (2) FI3C4 (1)C#4 (1)D4 (1)D#4 (1)E4 (1)F4 (1)F#4 (1)G4 (1) SI3C4 (2)C#4 (2)D4 (2)D#4 (2)E4 (2)F4 (2)F#4 (2)G4 (2) FI4G#4 (1)A4 (1)A#4 (1)B4 (1)C5 (1)C#5 (1)D5 (1)D#5 (1) SI4G#4 (2)A4 (2)A#4 (2)B4 (2)C5 (2)C#5 (2)D5 (2)D#5 (2) FI5E5 (1)F5 (1)F#5 (1)G5 (1)G#5 (1)A5 (1)A#5 (1)B5 (1) SI5E5 (2)F5 (2)F#5

21、 (2)G5 (2)G#5 (2)A5 (2)A#5 (2)B5 (2) FI6C6 (1)C#6 (1)D6 (1)D#6 (1)E6 (1)F6 (1)F#6 (1)G6 (1) SI6C6 (2)C6# (2)D6 (2)D#6 (2)E6 (2)F6 (2)F#6 (2)G6 (2) FI7G#6 (1)A6 (1)A#6 (1)B6 (1)C7 (1) SI7G#6 (2)A6 (2)A#6 (2)B6 (2)C7 (2) PA0PA1 PB0INTRO PB1FINGERED PB2 PB3NORMAL FULL RANGE CHORD NORMAL FILL-IN VARIATI

22、ON FILL-IN CASIO CHORD START/ STOP KC0KC1KC2KC3KC4KC5KC6KC7 KI0MEMORYSTEP 23TONE5 KI1STEPSTEP 376ACC. VOL.TIMEMETRO KI2STEP 10+4DEMOTOUCHREVERB FI92RHYTHM9KEYLIGHT FI10SPLIT1SONG8 SYNCHRO/ ENDING LAYER TRACK 1/ RIGHT TRANSPOSE/ TUNE/MIDI TRACK 1/ LEFT TEMPOTEMPO PLAY/PAUSE FFREWIND STOP 5 LED MATRIX

23、 Key Second contact (2) First contact (1) FI KC SI Note: Each key has two contacts, the first conatct (1) and second contact (2). 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 NOMENCLATU

24、RE OF KEYS 0L1L2L3L4L5L6L7L8L9L01L 12L#2A4F4B5E5A6D6G7C#6A#6G#6F 22L#2G4E4A5D5G6C6F6B#5A#6C#6D 32L2C4D4G5C5F5B6E6A#5G#5F#5D 11L21L31L41L51L61L71L81L91L02L 12L#3C#3D#3F2G3C3F#4D#4C#3A#3G 22L#2F#2D#2C2F2B3E#4F#4G#4A#5C 32L2D2E2A3D3G3A3B4C 6 emaNega t l oVfono i t areporoF DDVV5+ ,MAR t c e f f E,MAReg

25、aro t s gn i kroW,MORecruosdnuoS,PSD,CIteseR,UPC rev i rdDEL DDVDV5+UPCkca j IDIM , k c a j n i a t s uS, DDVAV5+ret l iF,CAD DDVLV5+AG CCVV9+re i f i l pmarewoP CCLVV2+pma l to l iP DDCLV6.5+rev i rdDCL POWER SUPPLY CIRCUIT The power supply circuit generates seven voltages as shown in the following

26、 table. VDD voltage is always generated. The others are controlled by APO 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

27、 power switch is pressed, the CPU receives a low pulse of POWER signal. The CPU sends APO signal to the power supply circuit, also sends a reset signal to the DSP. Reset IC IC1 RN5VD40AA DSP LSI2 HG51B277FB-1 VDD Reset signal To power supply circuit VDD Battery set RESET VDD POWER From power switch

28、NMI RSTB RESB APO PLE CPU LSI1 GT913F SCK0 7 CPU (LSI1: 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. T

29、he CPU reads sound data and velocity 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 seque

30、ncer data into the working storage RAM. The following table shows the pin functions of LSI1. .oNniPlanimreTtuO/nIno i t cnuF 10DXTtuOdesutoN 20DXRnIdesutoN 30KCStuOtuptuo l a ng i s) f fOrewoPotuA(OPA 41DXTtuOtuptuo l a ng i sIDIM 51DXRnItupn i l ang i sIDIM 61KCStuOtuptuoes l upgn i z i norhcnysZHM

31、1 7CCVAnIecruos)V5+(DDVD 80NAnI . l a n i mretno i t cetedrotpadaCA dnase i re t t abybderewop s i draobyekehtnehwV5+ CAnehwno i t cnufOPAeht l ecnacotV0semoceb .de t c ennoc s i rotpada 91NA.dnuorgotde t c ennoC.desutoN 01DNGAnIecruos)V0(dnuorG 11KCBtuOtuptuokco l c t i B 21OStuOtuptuoataddnuosl a

32、i reS 31KCRLtuOtuptuokco l cdroW 41DNGnIecruos)V0(dnuorG 61,511TLX,0TLXtuO/nItuptuo / t up n i kco l czHM03 71CCVnIecruosV5+ 91,811DM,0DMnI l a n i mretno i t ce l esedoM 02BTSRnItupn i l ang i steseR 12IMNnItupn i l ang i sNOrewoP 2201P/TNItuO/nIrev i rdDCLehtrofsubataD 0332 3IF0IF 3IS0IS nI l a ng

33、 i stup n i yekrof l a n i mreT 83137CK0CKtuO l a ng i snacsyekrof l a n i mreT 6493 7IF4IF 7IS4IS nI l a ng i stup n i yekrof l a n i mreT 84,748IS,8IFdesutoN 949IFnI l a ng i stup n i no t t ubrof l a n i mreT 059ISnIrev i rdDCLrofsubataD 1501IFnI l a ng i stup n i no t t ubrof l a n i mreT 2532P/

34、01IStuOrev i rdDCLehtrofsubataD 55352IK0IKnI l a ng i stup n i no t t ubrof l a n i mreT 65BNWMtuOPSDehtrof l ang i se l baneet i rW 8 DIGITAL SIGNAL PROCESSOR (LSI2: HG51B227FB-1) The DSP receives 16-bit serial sound data output from the CPU and adds the selected effect to the sound data using the

35、effect RAM. Then the DSP provides the sound data to the DAC. The DSP also controls button input/ output and GA. The following table shows the pin functions of LSI2. .oNniPlanimreTtuO/nIno i t cnuF 677591AM0AMtuOsubsserddA 87,771BSCM,0BSCMtuO ,MORecruosdnuosehtroftuptuo l a ng i se l banep i hC PSDdn

36、aMARgn i krow 972BSCMtuOdesutoN 08CCVnIecruosV5+ 18DNGnIecruos)V0(dnuorG 28BDRMtuOMORecruosdnuosehtroftuptuo l a ng i se l banedaeR 893851DM0DMtuO/nIsubataD 99ELPtuOPSDehtroftuptuo l a ng i steseR 00171PtuO/nIrev i rdDCLehtrofsubataD .oNniPlanimreTtuO/nIno i t cnuF 08,313BP0BPnIs l a n i mrettup n i

37、 no t t uB 44BPnItup n i kcaJELBANGISSA 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 czHM02 31IKCWnIUPCehtmo r f tup n i kco l cdroW 41ISnIUPCe

38、htmo r f tup n i ataddnuosl 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 62BECRtuOAGehtroftuptuo l a ng i se l banep i hC 723SSVnIecruos)V0(dnuorG 821DAnIsubsserddA 92BEOtuOMARegaro t s gn i krowrof l ang i

39、se l banetuptuO 03BEWnIMARegar t sgn i krowrof l ang 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 9 LCD DRIVER (LSI401: SED1278F0A) The LCD driver can drive a dot matrix LCD having 40 segment and 15 common lines. The LSI contains 2

40、40 graphic symbols in the built-in character generator 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 LSI 401. Pin No.TerminalIn/OutFunction 1 22, 63 80 23VSSGND (0 V) source Terminals for the built-in clock pulse generator.The external resistor connected determines the oscillation requency. LCD drive voltage input. Those voltages are used for generating the stepped pulse of