Casio Electronic Keyboard Ctk 401 Users Manual S/M
ctk4014 4c79dd5b-d019-4175-b437-874d326cce01 Casio Electronic Keyboard CTK-401 User Guide |
2015-01-21
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CTK-401 100 RHYTHMS 100 TONES TONE RHYTHM SONG BANK STATUS TEMPO VOLUME 100 SONG BANK (00-49) POWER/MODE 100 SONG BANK (50-99) MUSICAL INFORMATION SYSTEM MAIN SYNCHRO/ START/ VOLUME FILL-IN STOP TEMPO CHORD BOOK REW M m 7 M7 dim 3 4 TONE STOP FF SONG BANK FINGERED ON 0 CASIO CHORD OFF 1 5 6 aug sus4 NORMAL 2 7 8 LEFT ON/OFF RIGHT ON/OFF 9 PLAY/ ACCOMP VOLUME -5 add9 CLEAR RHYTHM TRANSPOSE/ TUNE SO NG PAUSE ER BANK CONTROLL 100 SONG BANK KEYBOARD MUSICAL INFORMATION SYSTEM SONG BANK CONTROLLER CTK-401 ELECTRONIC KEYBOARD CONTENTS Specifications ................................................................................................................................... 1 Block Diagram .................................................................................................................................. 2 Circuit Description ............................................................................................................................ 3 Adjustment ....................................................................................................................................... 7 Major Waveforms ............................................................................................................................. 8 Printed Circuit Boards ...................................................................................................................... 9 Schematic Diagrams ...................................................................................................................... 11 Exploded View ............................................................................................................................... 15 Parts List ........................................................................................................................................ 17 SPECIFICATIONS GENERAL Keyboard: Tones: Polyphony: Auto accompaniment Rhythm patterns: Tempo: Chords: Rhythm controller: Accomp volume: Song bank Tunes: Controllers: Musical dictionary Name display: Tempo: Chord: Fingering: Song bank status: Staff: Keyboard: Other functions Transpose: Tuning: Volume: Terminals Phones/Output terminal: Power supply terminal: Power supply Batteries: Battery life: AC adaptor: Auto power off: Speaker output: Power consumption: Dimensions (HWD): Weight: 49 standard-size keys, 4 octaves 100 12 notes maximum (6 for certain tones) 100 Variable (236 steps, = 20 to 255) 2 fingering methods (CASIO CHORD, FINGERED) START/STOP, SYNCHRO/FILL-IN 0 to 9 (10 steps) 100 PLAY/PAUSE, STOP, REW, FF, LEFT ON/OFF, RIGHT ON/OFF TONE, RHYTHM, SONG BANK name/number Tempo value, metronome, synchro standby, beat indicator Chord name, Chord form Fingering indcators, parts PLAY, PAUSE, REW, FF, playing Four octaves with sharp and flat indications Four octaves 12 steps (–6 semitones to +5 semitones) Variable (A4 = approximately 440 Hz ± 50 cents) 0 to 9 (10 steps) Stereo standard jack Output Impedance: 100 Ω Output Voltage: 3.0 V (RMS) MAX 9 V DC Dual power supply system Six AA-size batteries Approximately 2 hours (SUM-3/R6P)/6 hours (AM3/LR6) AD-5 Turns power off approximately six minutes after last key operation. Enabled under battery power only, can be disabled manually. 2.0 W + 2.0 W 9 V --- 7.0 W 988 × 332 × 124 mm (38-15/16 × 13-1/16 × 4-7/8 inches) Approximately 3.5 kg (7.7 lbs) (without batteries) ELECTRICAL Current drain with 9 V DC: No sound output Maximum volume with 12 keys C4 to B4 pressed in Synth-Lead 1 Volume: 9 (Max.) Phone output level (Vrms with 8 Ω load each channel): with key A4 pressed in Synth-Lead 1 Speaker output level (Vrms with 4 Ω load each channel): with key A4 pressed in Synth-Lead 1 Minimum operating voltage: —1— 100 mA ± 20 % 625 mA ± 20 % 67 mV ± 20 % 900 mV ± 20 % 5.7 V BLOCK DIAGRAM COM1 ~ COM16 LCD Driver SED1278F0A LSI3 LCD Buttons Keyboard SEG1 ~ SEG40 DB4 ~ DB7 Output —2— Power Amp. TA8248K IC101 KO8 ~ KO12 KI0 ~ KI6 Filter (L) Q104 KO0 ~ KO7 Filter (R) Q105 VC RS R/W E VCC DVDD CPU MSM 6755B-17 LSI1 MD0 ~ MD7 APO DC + 9 V IN MA0 ~ MA17 Power Supply Circuit Q101 ~ Q103, D104 Reset IC IC1 Oscillator X1, Q1 ROM(2M-bit) UM23C2101M 7384/Q LSI2 CIRCUIT DESCRIPTION KEY MATRIX KI0 KI1 KI2 KI3 KI4 KI5 KI6 KO0 C2 G#2 E3 C4 G#4 E5 C6 KO1 C#2 A2 F3 C#4 A4 F5 KO2 D2 A#2 F#3 D4 A#4 F#5 KO3 D#2 B2 G3 D#4 B4 G5 KO4 E2 C3 G#3 E4 C5 G#5 KO5 F2 C#3 A3 F4 C#5 A5 KO6 F#2 D3 A#3 F#4 D5 A#5 KO7 G2 D#3 B3 G4 D#5 B5 KO8 — + 0 Tempo Down Tempo Up Volume Down Volume Up KO9 3 2 1 Accomp Volume 6 5 4 Synchro/ Fill-in Song Bank Chord Book KO10 Start/ Stop Transpose/ Tune Rhythm Tone KO11 9 8 7 Fingered CASIO Chord Normal Power Off KO12 FF Right Play/ Pause Stop Left Rewind NOMENCLATURE OF KEYS C#2 D#2 C2 D2 E2 F#2 G#2 F2 G2 A#2 A2 B2 C#3 D#3 C3 D3 E3 F#3 G#3 F3 G3 A#3 A3 C#4 D#4 B3 C4 D4 —3— F#4 G#4 E4 F4 G4 A#4 A4 C#5 D#5 B4 C5 D5 F#5 G#5 E5 F5 G5 A#5 A5 B5 C6 CPU (LSI1: MSM6755B-17) The CPU reads sound data from the ROM in accordance with the pressed key and the selected tone; 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 with two built-in DACs. The CPU also controls key and button input. The following table shows the pin functions of LSI1. Pin No. 1 Terminal MA14 In/Out Out Function 2, 3 NCO — Not used 4 ~ 19 MA0 ~ MA13 Out Address bus 13 MRDB Out Read enable signal 17 MCSB — Not used 20 ~ 27 MD0 ~ MD7 In/Out Data bus 28, 29 NC1, NC2 — Not used 30 DGND In Ground (0 V) source 31 DVCC In +5 V source 32, 33 XTLO, XTLI In/Out 34 NC3 — Not used 35 RSTB In Reset signal input 36 P24/RXD — Not used. Connected to +5 V. 37 P25/TXD — Not used 38 NMI In Power ON signal input. Connected to +5 V. 39 APO Out APO (Auto Power Off) signal output 40 NC4 — Not used 41 REFH Out Terminal for the internal DAC 42, 43 NC5, NC6 — Not used 44 DAOR Out Right channel sound waveform output 45 NC7 — Not used 46 AVdac In +5 V source for the internal DAC 47 DAOL Out Left channel sound waveform output 48 REFL Out Terminal for the internal DAC and ADC 49 AGdac In Ground source for internal DAC 50 AGadc In Ground source for internal ADC 51 ANI In APO cancellation signal 52 AVadc In +5 V source for the internal ADC 53 NC8 — Not used 54 MOD0 In Mode selection terminal. Connected to +5 V. 55, 56 MOD1, MOD2 In Mode selection terminal. Connected to ground. 57 P40 — Not used 58 ~ 64 KI0/P30 ~ KI7/P36 In Terminals for key/button input signal 65 KI7/P37 — Not used 66 ~ 73 KO0/P50 ~ KO7/P57 Out Address bus 20 MHz clock input/output Terminals for key scan signal —4— Pin No. 74 ~ 77 Terminal DB4 ~ DB7 In/Out Out Function Data bus for the LCD driver 78 NC9 — Not used 79 LVCC In +5 V source 80 ~ 84 KO8 ~ KO12 Out Terminals for button scan signal 85 ~ 87 P65 ~ P67 — Not used 88 RS Out Control signal for the LCD driver 89 R/W Out Read/Write signal for the LCD driver 90 E Out Chip enable signal for the LCD driver 91 ~ 95 P73 ~ P77 — Not used 96 LGND In Ground source 97, 100 MA18, MA15 Out Address bus LCD DRIVER (LSI3: SED1278F0A) 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 LSI3. Pin No. 1 ~ 22, 63 ~ 80 Terminal In/Out Function SEG1 ~ SEG40 Out 23 VSS — 24, 25 OSC1, OSC2 In/Out 26 ~ 30 V1 ~ V5 In 31, 32 LP, XCLS — Not used 33 VDD In DVDD (+5 V) source 34, 35 FR, DO — Not used 36 RS In Data/command determination terminal. High: data, Low: command 37 R/W In Read/Write terminal. High: read, Low: write Segment signal output GND (0 V) source Terminals for the built-in clock pulse generator. The external resistor connected determines the oscillation frequency. LCD drive voltage input. Those voltages are used for generating the stepped pulse of the LCD drive signals. 38 E In Chip enable signal. High: enable, the writing is done at fall edge. Low: disenable 39 ~ 42 DB0 ~ DB3 — Not used. Connected to GND (0 V) 43 ~ 46 DB4 ~ DB7 In/Out 47 ~ 62 COM1 ~ COM16 Out Data bus Common signal/output —5— FILTER BLOCK Since the sound signals from the CPU is stepped waveforms, the filter block is added to smooth the waveforms. Amp. TA8248K CPU MSM6755B-17 Filter Block POWER AMPLIFIER (IC101: TA8248K) The power amplifier is a two-channel amplifier with standby switch. The following table shows the pin function of IC101. Pin No. Terminal In/Out Function 1 NC — Not used 2 B.S.2 — Terminal for a bootstrap capacitor 3 OUT2 Out 4 VCC In 5 OUT1 Out 6 B.S.1 — Terminal for a bootstrap capacitor 7 Power GND In Ground (0 V) source 8 Stand by In Power control signal input. 0 V: Off, +9 V: On 9 DC — Terminal for a decoupling capacitor 10 NF1 In Negative feedback input 11 IN1 In Channel 1 input 12 IN2 In Channel 2 input 13 NF2 In Negative feedback input 14, 15 Pre GND In Ground (0 V) source Channel 2 output +9 V source Channel 1 output —6— ADJUSTMENT MAIN PCB 1) Items to be adjusted: Item Measuring Instrument Vop voltage setting Voltmeter 2) Adjustment and Test Point Locations (TOP VIEW) Test point 3) Equipment connection/Procedure Vop voltage setting Set Voltmeter Output V5 Input Connection Input Point Input Signal Adjust VR1 Output Connection Output Point Voltmeter V5 Adjust for Adjust for 4.3 ±0.1 V reading on voltmeter. Make fine adjustment according to the next instruction. Eye Watching the LCD at a 53.5° angle to the horizontal, adjust Vop voltage so that unenergized segments are seen dimly. 53.5° LCD —7— MAJOR WAVEFORMS 1 2 3 1 Clock pulse MSM6755B-17 pin 32 2 +5 V source DVDD JC connector pin 6 3 APO signal JC connector pin 5 6 4 7 5 6 Button scan signal KO6 JA connector pin 14 7 Button scan signal KO7 JA connector pin 15 4 Sound waveform (R-ch) Tone: Whistle JC connector pin 4 Key: A4 5 Sound waveform (L-ch) Volume: JC connector pin 3 8 9 8 LCD common signal COM9 SED1278F0A pin 55 9 LCD common signal COM10 SED1278F0A pin 56 —8— PRINTED CIRCUIT BOARDS Main PCB JCM442-MA1M 1 5 4 3 6 2 7 Top View 8 Bottom View —9— 9 SCHEMATIC DIAGRAMS Main PCB JCM442-MA1M 2 3 4 5 6 1 9 8 — 11 — 7 Sub PCB JCM442-MA2M — 12 — Keyboard PCBs KDM4910K-KY1M/KY2M — 13 — COM7 COM6 COM5 COM4 COM3 COM2 COM1 SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 SEG7 SEG8 SEG9 SEG10 SEG21 SEG22 SEG23 SEG24 SEG25 SEG26 SEG27 SEG28 SEG29 SEG30 SEG31 SEG32 SEG33 SEG34 SEG35 SEG36 SEG37 SEG38 SEG39 SEG40 COM7 COM6 COM5 COM4 COM3 COM2 COM1 SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 SEG7 SEG8 SEG9 SEG10 SEG21 SEG22 SEG23 SEG24 SEG25 SEG26 SEG27 SEG28 SEG29 SEG30 SEG31 SEG32 SEG33 SEG34 SEG35 SEG36 SEG37 SEG38 SEG39 SEG40 Common COM11 COM12 SEG39 SEG40 COM10 COM9 COM14 COM15 COM16 SEG11 SEG12 SEG13 SEG14 SEG15 SEG16 SEG17 SEG18 SEG19 SEG20 SEG21 SEG22 SEG23 NC NC NC COM16 COM15 COM14 COM13 COM12 COM11 COM10 COM9 COM16 COM15 COM14 COM13 COM11 COM12 SEG39 SEG40 COM10 COM9 COM14 COM15 COM16 SEG11 SEG12 SEG13 SEG14 SEG15 SEG16 SEG17 SEG18 SEG19 SEG20 SEG21 SEG22 SEG23 NC NC NC COM16 COM15 COM14 COM13 COM12 COM11 COM10 COM9 COM16 COM15 COM14 COM13 LCD Segment — 14 — EXPLODED VIEW 18 R-1 5 12 6 14 13 11 8 10 7 9 1 15 2 R-2 19 4 R-3 16 4 R-6 17 R-4 R-5 3 — 15 — PARTS LIST CTK-401 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 without 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. Item Code No. Parts Name Main PCB 6926 0200 PCB/ASS'Y (MA1M) 2012 5603 LSI/MC (CPU) 2012 5611 LSI/MASK-ROM 2012 5569 LSI/LCD DRIVER 2012 1883 IC/MOS (RESET IC) 2252 1239 TRANSISTOR 2775 3286 POTENTIOMETER 2590 2100 OSCILLATOR/CERAMIC Sub PCB 2 6926 0190 PCB/ASS'Y (MA2, 3M) IC101 2114 5775 IC/LINEAR (POWER AMP.) Q101 2250 0168 TRANSISTOR Q102, Q104/105 2220 1409 TRANSISTOR Q103 2250 1585 TRANSISTOR D101 2390 1323 DIODE/SHOTTKY D102 2390 3018 DIODE D103 2390 1344 DIODE D104 2360 2044 DIODE/ZENER D105 2360 1799 DIODE/ZENER LED101 2370 0112 LED J101 3501 7049 JACK (POWER) J102 3612 0665 JACK (PHONE) Keyboard PCBs 3 6926 0180 PCB/ASS'Y D701 - D749 2301 0101 DIODE Mechanical Parts 4 3831 0770 SPEAKER 5 3335 6556 LCD 6 6926 0270 RUBBER/INTERCONNECTOR 7 6909 5890 SWITCH/SLIDE KONB 8 6921 5031 KNOB 9 6926 0280 RUBBER/BUTTON 10 6926 0290 RUBBER/BUTTON 11 6926 0300 RUBBER/BUTTON 12 6926 0310 RUBBER/BUTTON 13 6922 2720 KEY SET/LT WHITE 14 6922 2730 KEY SET/LT WHITE 15 6922 2740 KEY SET/LT BLACK 10P 16 6922 4000 RUBBER/CONTACT 17 6923 2390 RUBBER/CONTACT 18 6926 0320 PANEL/DISPLAY 19 6926 0020 COVER/BATTERY Accessory 6906 8752 STAND/NOTE 1 LSI1 LSI2 LSI3 IC1 Q1 VR1 X1 Notes: Q – Quantity per unit R – Rank — 17 — Specification M240592*1 MSM6755B-17 UM23C2101M-7384/Q SED1278F0A RN5VD40AA-TR 2SC4081T106Q EVM3SSX50B53 CSACS20.00MX040-TC Q R 1 1 1 1 1 1 1 1 B A A A B B B B M140548*1 TA8248K 2SA854SR-TP-T 2SC1740SR-TP-T 2SD1858TV2Q RB100A-T32-T 1T2 1SS133T-77-T MTZJ6.2A-T77-T MTZJ5.1A-T77-T LN28RPX-(TT8) HEC2305-01-330 YKB21-5006 1 1 1 3 1 1 1 11 1 1 1 1 1 B A A A A C C C A A C B B M140449*3 1S2473T-77-T 1 C 49 B B B C B B B B B B A A A A A C B S10JA13A LD-B10023A M440435-2 CSB-12D M311859-1 M240587-1 M240588-1 M240589-1 M240590-1 M312118*1 M312118*2 M111726-1 M111765-1 M240025-1 M340608-1 M340528*2 1 1 2 1 1 1 1 1 1 3 1 2 1 1 1 1 M340629B*2 1 B MA0600571A
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