Casio_CTK-611_Service_Manual电路图.pdf

ELECTRONIC KEYBOARD CTK-611 CTK-611 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? POWER FULL RANGE CHORD FINGERED MAX START TEMPO REVERB SYNTH MIXER MEMORY STEP ACCOMP VOLUME STOP MIN CASIO CHORD NORMAL FREE SESSION TOUCH RESPONSE LAYER SPLIT CURSOR PITCH BENDMODEVOLUMEINTROSYNCHRO/ENDING NORMAL/FILL-INVAR/FILL-IN REVERB GM FREE SESSION LAYER SPLIT TOUCH RESPONSE HALL STAGE ROOM SYNTH MIXER MEMORY STEP CHORD/123456 MEMORY TRACK/DRUM PAD DEMO TRANSPOSE/ TUNE/MIDI RHYTHMTONE ENTER AMP ENVELOPE 000-048 DECAY00 FLAT 049-137 SUSTAIN 01-19 VIBRATO 20-49 OTHERS PITCH ENVELOPE ENVELOPE 200 TONES200 TONES100 RHYTHMS100 RHYTHMS RadioFans.CN 收音机爱 好者资料库 INDEX CONTENTS Specifications. 1 Block Diagram. 3 Circuit Description. 4 Adjustment . 11 Major Waveforms . 12 Printed Circuit Boards . 13 Schematic Diagrams . 14 Exploded View . 19 Parts List . 20 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) Drum pads:6 Tones:200 (128 General MIDI, 32 synthesized, 8 drum, 32 user); with layer and split Rhythm instrument tones:51 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) Chords:3 fingering methods (CASIO CHORD, FINGERED, FULL RANGE CHORD) Rhythm controller:START/STOP, INTRO, NORMAL/NORMAL FILL-IN, VARIATION/VARI- ATION FILL-IN, SYNCHRO/ENDING Accomp volume:0 to 127 (128 steps) Free session Number of patterns:100 (auto-accompaniment in accordance with selected chord progres- sion) Memory function Songs:2 Recording tracks:6 (2 through 6 are melody tracks) Recording methods:Real-time, step Memory capacity:Approximately 5,200 notes (total for two songs) Edit function:Equipped Demo tunes:2 Synthesizer function Parameters:PCM set, amp envelope set, attack rate, release rate, pitch envelope set, pitch, level, touch sense, pan Mixer function Channels:16 Parameters:Program change number, volume, expression, pan, coarse tuning, fine tuning, on/off/solo MIDI:16 multi-timbre receive, GM Level 1 standard Other functions Pitch bend range:12 semitones upwards and downwards Transpose:25 steps (12 semitones to +12 semitones) Tuning:Variable (A4 = approximately 440 Hz 50 cents) Terminals MIDI terminals:IN, OUT Assignable terminal:Standard jack (sustain, sostenuto, soft, rhythm start/stop) Headphone/Output terminal:Stereo standard jack Output Impedance: 120 Output Voltage: 4.5 V (RMS) MAX Power supply terminal:9 V DC Power supply:Dual power supply system Batteries:6 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 Power consumption:9 V - 7.7 W Dimensions (HWD):93.1 37.3 12.0 cm (36 11/16 14 11/16 4 3/4 inches) Weight:Approximately 5.0 kg (11.0 lbs) (without batteries) RadioFans.CN 收音机爱 好者资料库 2 ELECTRICAL Current drain with 9 V DC: No sound output340 mA 20 % Maximum volume1012 mA 20 % with 12 keys from C3 to B3 pressed in Square wave tone Volume: maximum, Touch response: maximum Reverb: Hall Phone output level (Vrms with 8 load each channel):L-ch90 mV 20 % with key C6 pressed in Bassoon toneR-ch100 mV 20 % Volume: maximum, Touch response: maximum Reverb: Hall Speaker output level (Vrms with 4 load each channel):L-ch1150 mV 20 % with key F5 pressed in Bassoon toneR-ch1000 mV 20 % Volume: maximum, Touch response: maximum Reverb: Hall Output level (Vrms with 47k load each channel):L-ch1200 mV 20 % with key F5 pressed in Bassoon toneR-ch1000 mV 20 % Volume: maximum, Touch response: maximum Reverb: Hall Minimum operating voltage:6.3 V About General 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 nuances 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. 3 KC0 KC7 FI0 FI9 SI0 SI9 KI0 KI2 PB0 PB3 P10, P13 P14, P17 Working Storage RAM (256K-bit) LSI4 TC55257DFL-70L(EL) MIDI EA0 EA14 EIO0 EIO7 Sound Source ROM (16M-bit) LSI3 UPD23C16000WGX- C51 LRCK SO BCK D/A Converter LSI6 UPD6379GR Filter Q107 Q110 Main Volume Power Amplifier IC101 TA8248K Keyboard MA0 MA19 Power Supply Circuit Q101 Q105, D106/107, D190 VCC AVDD VDD DVDDLVDD VC APO Effect RAM (256K-bit) LSI5 TC55257DFL- 70L(EL) MD0 MD7 Speakers Output MA0 MA14 MA0, MA1 LRCK, SO BCK, SINK LCD LCD Driver LSI401 SED1278F2A SEG1 SEG40 INOUT Reset IC IC1 RN5VD40AA RESET COM1 COM16 DSP LSI2 HG51B277FB-1 MD0 MD15 CPU LSI1 UPD913GF-3BA Buttons Assingnable Jack PB4 VDD Power Switch NMI FI10 P23 PA0 PA5 PB0 PB3 BLOCK DIAGRAM 4 KC0KC1KC2KC3KC4KC5KC6KC7 FI10 Drum PadDrum PadPitch BendH 96+Tone 31HEnter KI0 Drum PadDrum PadPitch BendStart/ 83Rhythm 42GStop KI1 Drum Pad Step Tempo E720Demo 5H KI2 Drum Pad Memory Tempo F451 Transpose/ 6GTune/MIDI KC0KC1KC2KC3KC4KCKC6KC7 FI0C2 (1)C#2 (1)D2 (1)D#2 (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 (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)#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 (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) CIRCUIT DESCRIPTION KEY MATRIX BUTTON MATRIX PA0PA1PA2PA3 PB0 Full Range Intro Touch Reverb ChordResponse PB1Fingered Normal/ Free Session Accomp Fill-InVolume PB2Casio Chord Synchro/ LayerSynth Ending PB3Normal Variation/ SplitMixer Fill-In 5 Reset IC IC1 RN5VD40AA DSP LSI2 HG51B277FB-1 VDD Reset signal To power supply circuit VDD Battery set RESET VDD POWER From power switch NMI APO PLE CPU LSI1 UPD913GF-3BA SCKO 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 Key Second contact (2) First contact (1) FI KC SI Note: Each key has two contacts, the first conatct (1) and second contact (2). POWER SUPPLY CIRCUIT The power supply circuit generates five voltages as shown in the following table. VDD voltage is always generated. The others are controlled by APO signal from the CPU. NOMENCLATURE OF KEYS 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 low pulse of POWER signal. The CPU sends APO signal to the power supply circuit, also sends a reset signal to the DSP. NameVoltageFor operation of VDD+5 VCPU, Reset IC, DSP, Sound source ROM, Working storage RAM, Effect RAM DVDD+5 VLCD driver, Power jack, Sustain jack, MIDI jack AVDD+5 VDAC, Filter LVDD+5.6 VLCD dirver VCC+9 VPower amplifier, Pilot lamp 6 CPU (LSI1: UPD913GF-3BA) 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 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 sequencer data into the working storage RAM. The following table shows the pin functions of LSI1. Pin No.TerminalIn/OutFunction 1TXD0OutMIDI signal output 2RXD0InMIDI signal input 3SCK0OutAPO (Auto Power Off) signal output 4, 5TXD1, RXD2In/OutData bus for the LCD driver 6SCK1Out1 MHZ synchronizing pulse output 7AVCCInDVDD (+5 V) source 8AN0In AC adaptor detection terminal. +5 V when the keyboard is powered by batteries and becomes 0 V to cancel the APO function when AC adaptor is connected. 9AN1Not used. Connected to ground. 10AGNDInGround (0 V) source 11BCKOutBit clock output 12SOOutSerial sound data output 13LRCKOutWord clock output 14GNDInGround (0 V) source 15, 16XLT0, XLT1In/Out20 MHz clock input/output 17VCCIn+5 V source 18, 19MD0, MD1InMode selection terminal 20RSTBInReset signal input 21NMIInPower ON signal input 22INT/P10In/OutData bus for the LCD driver 23 30 FI0 FI3 InTerminal for key input signal SI0 SI3 31 38KC0 KC7OutTerminal for key scan signal 39 46 FI4 FI7 InTerminal for key input signal SI4 SI7 47 50 FI8, FI9 Not used SI8, SI9 51FI10InTerminal for button input signal 52SI10/P23OutChip enable signal for the LCD driver 53 55KI0 KI2InTerminal for button input signal 56MWNBOutWrite enable signal for the DSP 57 76MA0 MA17OutAddress bus 77MCSB0OutChip enable signal output for the sound source ROM 78MCSB1OutNot used 79MCSB2OutChip enable signal output for the DSP 7 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 effect RAM. Then the DSP provides the sound data to the DAC. The DSP also controls button input/ output. The following table shows the pin functions of LSI2. Pin No.TerminalIn/OutFunction 80VCCIn+5 V source 81GNDInGround (0 V) source 82MRDBOutRead enable signal output for the sound source ROM 83 98MD0 MD15In/OutData bus 99PLEOutReset signal output for the DSP 100P17In/OutData bus for the LCD driver Pin No.TerminalIn/OutFunction 1 3, 80PB0 PB3InButton input terminals 4PB4InASSIGNABLE Jack input 5SOOutSerial sound data output for the DAC 6WCKOOutWord clock output for the DAC 7VDD3In+5 V source 8TESTNot used 9RESBInReset signal input 10VSS2InGround (0 V) source 11, 12XIN, XOUTIn/Out20 MHz clock input/output 13WCKIInWord clock input from the CPU 14SIInSerial sound data input from the CPU 15BCKIInBit clock input from the CPU 16SINCIn1 MHz synchronizing pulse input 17VDD2In+5 V source 18 25IO0 IO7In/OutData bus 26RCEBOutChip enable signal output for the working storage RAM 27VSS3InGround (0 V) source 28AD1InAddress bus 29OEBOutOutput enable signal for working storage RAM 30WEBInWrite enable signal 31VDD3In+5 V source 32CE2InChip enable signal input. High active. 33AD0InAddress bus 34CE1BInChip enable signal input. Low active. 35 41, 43EIO0 EIO7In/OutData bus for the effect RAM 8 LCD DRIVER (LSI401: SED1278F2A) 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 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 42 , 44, 46 48, EA0 EA12OutAddress bus for the effect RAM 51 59, 61 45ECEBOutChip enable signal output for the effect RAM 49EOEBOutRead enable signal output for the effect RAM 50VSS3InGround (0 V) source 60EWEBOutWrite enable signal output for the effect RAM 62, 66, 70, 74, 78VSS2InGround source 63, 67, 71, 75, 79VDD2In+5 V source 64, 65, 68, 69, PA0 PA5OutButton scan signal output 72, 73 76, 77PA6/7OutNot used Pin No.TerminalIn/OutFunction 1 22, SEG1 SEG40OutSegment signal output 63 80 23VSSGND (0 V) source 24, 25OSC1, OSC2In/Out Terminals for the built-in clock pulse generator. The external resistor connected determines the oscillation frequency. 26 30V1 V5In LCD drive voltage input. Those