Casio_CTK-500_Service_Manual电路图.pdf

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1、(with price) CTK-500 ELECTRONIC KEYBOARD R CTK-500 RadioFans.CN 收音机爱 好者资料库 - 2 - Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Circuit Description

2、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Major Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 PCB Views and Major Check Points . . . . . . . . . . . . . . . . . . . . . . . . 8 Schematic Diagrams . . . . . . . . . . . . .

3、. . . . . . . . . . . . . . . . . . . . . . . 9 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 IC and Transistor Lead Identification . . . . . . . . . . . . . . . . . . . . . 12 Exploded View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4、. . . . . . . . . . 14 Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 CONTENTS RadioFans.CN 收音机爱 好者资料库 1 General Number of Keys:61 Polyphonic:16-note Preset Tones:120 Auto-Rhythms:40 Auto-Accompaniment:CASIO Chord/Fingered Jukebox Tunes:40 Cho

5、rd Memory:Real-Time Recording Memory Capacity: 128 chords (maximum) Built-In Speakers:12 cm dia. 1.1W Input Rating: 2 pcs. Terminals:Output Jack Output Impedance: 50 , Output Voltage: 1.4 V (rms)MAX, AC Adapter Jack (DC 9 V) Auto Power Off:Approximately 6 minutes after the last operation Power Sourc

6、e:2-way AC or DC source AC: AC adapter DC: 6 D size dry batteries Power Consumption:6.7 W Dimentions:110 x 939 x 337 mm (HWD) (4-5/16 x 36-15/16 x 13-1/4 inches) (HWD) Weight:4.5 kg (9.9 lbs) excluding batteries Electrical Current Drain with 9V DC: No Sound Output125 mA 30% Maximum Volume530 mA 30%

7、with keys C4 to D#5 pressed in Clarinet tone, Volume; Maximum, Rhythm; Samba, Tempo; Maximum Output Level (Vrms with 8 load each channel):107 mV 30% with key C4 pressed in Clarinet tone, Volume; Maximum Sound Pressure Level:107 dB 10 dB at 10 cm away from the speaker with key G6 in Brass-1 tone Mini

8、mum Operating Voltage:6.0 V SPECIFICATIONS RadioFans.CN 收音机爱 好者资料库 2 LEDs LED Driver IC3 KO0 KO5, KO17 OE CE A0 A16 D0 D15 43.45 MHz Clock Keys and Switches KO0 KO16 KI1 KI7 CPU MSM6626-01 LSI1 ROM MN232000CUQ LSI2 ROUT LOUT Reset IC S8053ANO IC4 KO18 (APO) VCCAVDDVDD Power Amp. LA4127 IC2 Output Po

9、wer IC CA5668 IC1 Filter (R) T5 Filter (L) T6 Speakers Main Volume Control X1 BLOCK DIAGRAM 3 CIRCUIT DESCRIPTION Key and Switch Matrix KI0KI1KI2KI3KI4KI5KI6KI7 KO0C2C#2D2D#2E2F2 KO1F#2G2G#2A2A#2B2 KO2C3C#3D3D#3E3F3 KO3F#3G3G#3A3A#3B3 KO4C4C#4D4D#4E4F4 KO5F#4G4G#4A4A#4B4 KO6C5C#5D5D#5E5F5 KO7F#5G5G#

10、5A5A#5B5 KO8C6C#6D6D#6E6F6 KO9F#6G6G#6A6A#6B6 KO10C7 Tempo Up Tempo Down KO11 Power Off NormalFingered CASIO Chord KO12 Accomp. Volume 1 (Min) Accomp. Volume 2 Accomp. Volume 3 Accomp. Volume 4 Accomp. Volume 5 (Max) KO13Reverb OffReverb 1Reverb 2 KO14 Synchro / Fill-In Start/Stop Intro/ Ending Chor

11、d Memory Record Chord Memory Play Ad-Lib Musician Jukebox Start/Stop Beat (Jukebox) KO15Bank ABank BBank CBank DBank EBank FBank GBank H KO16Number 1Number 2Number 3Number 4Number 5 Solo Sound Duo Sound Ensenble Sound 4 F#3 G#3 A#3C#4 D#4F#4 G#4 A#4 C#5 D#5F#5G#5 A#5 F3G3A3B3C4D4E4F4G4A4B4C5D5E5F5G5

12、A5B5C6 D#3 C2D2E2F2G2A2B2C3D3E3B6A6G6F6E6D6C7 C#3A#2G#2F#2D#2C#2A#6G#6F#6D#6C#6 CPU (LSI1: MSM6626-01) 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 l

13、eft and the right channels waveforms separately, by converting the data into the waveforms with two built-in DACs. The CPU also controls keys, switches, and LEDs. The following table shows the pin functions of LSI1. Pin No.TerminalIn/OutFunction 1 10 74 80 KO0 KO16Out Using time sharing, the termina

14、ls provide key and switch scan signals, and LED drive signals. 11KO17Out Clock output for the LED driver 12KO18 (APO)Out APO (Auto Power Off) signal output. 13KO20Out Not used. 14 21KI0 KI7In Input terminals from the keys and switches 22-MIIn Power ON trigger pulse input. 23-RESETIn CPU reset signal

15、 input. 24REFHIn Low level reference voltage input for the built-in DAC 25AVDDIn +5 V source for the built-in DAC 26ROUTOut Right channel sound signal output 27LOUTOut Left channel sound signal output 28AGNDIn Ground (0 V) source for the built-in DAC 29REFLIn High level reference voltage for the bui

16、lt-in DAC 30, 31TEST1, TEST2 Not used. Connected to ground. 32GNDIn Ground (0 V) source 33, 34COSI, COSOIn/Out 43.45 MHz clock input/output 35VDDIn +5 V DC source. Regardless of the power switch position, the terminal always receives +5 V DC. 36-CEOut Chip enable signal output. Low effective. 37-OEO

17、ut Read enable signal output. Low effective. 38 40ADR17 ADR19Out Not used. 41 57ADR0 ADR16Out Address bus for the ROM 58 73DIN0 DIN15In Data bus for the ROM Nomenclature of Keys 5 From the CPU To main volume FIlter Block Since the sound signall from the CPU is a stepped waveform, the filter block is

18、 added to smooth the waveform. VDD 1K AGAGAG 10K 10K6.2K C562(H) C222(H) C331J 2SC3112B VDD CPU MSM6626-01 LSI1 VDD ON OFF ON OFF MI KO11 KI1 KI0 Power Switch ON KO18 APO signal OFF: 0V ON: +5 V Power On/Off Circuit When the power switch is turned on, a low level differential pulse is provided to te

19、rminal MI of the CPU. Upon receipt of the pulse, the CPU starts the power ON sequence and raises the APO signal to +5 V. When the switch is off, on receiving the KO11 signal at terminal KI0, the CPU drops the APO signal to ground level to shut down power. Initial Reset Circuit When batteries are set

20、 or an AC adapter is connected, the reset IC provides a low pulse to the CPU. The CPU then initializes its internal circuit. VDD Battery set RESET CPU MSM6626-01 LSI1 Reset IC S8053ANO IC4 6 Power IC (IC1: CA5668) The power IC generates three voltages AVDD (+5 V) for the CPU and the reset IC, AVDD (

21、+5 V) for the analog circuit, and VCC (+9 V) for the power amplifier. VDD (+5 V) is always generated, but AVDD (+5 V) and VCC (+ 9V) are controlled by the APO signal. KO0 KO1 KO2 KO3 KO4 KO5 KO17 D3 D5 D2 D6 D1 D4 Q3 Q5 Q2 Q6 Q1 Q4 L0 L1 L2 L3 L4 L5 CPU MSM6626-01 LSI1 LED Driver TC74CH174AP IC3 Cho

22、rd Memory Play Solo Sound Duo Sound Ensenble Sound Beat (Jukebox) Ad-Lib Musician VDD CLK CLR LED Driving VDD AVDD VCC APO VIN VDIN GND CA5668 IC1 +9V APOVDDAVDDVCC 0 V+5 V0 V0 V +5 V+5 V+5 V +9 V 7 MAJOR WAVEFORMS 8 1 2356 789 101112134 PCB VIEWS AND MAJOR CHECK POINTS Volume PCB M5505-MA2M Main PC

23、B M5505-MA1M 9 6 7 3 2 5 8 9 13 11 4 1 12 10 M5505-MA1M,MA2M PCB SCHEMATIC DIAGRAMS 10 Keyboard PCBs M619K-KY1M,KY2M PCB-M619K-KY1MPCB-M619K-KY2M 11 TROUBLESHOOTING Nature of TroubleFaulty BlockCheckpoint No powerPower Jack (J1)Jack contact. Power IC (IC1: CA5668)Pin 8 should have +5 V. Pin 6 should

24、 provide + 5V when pin 10 receives + 5 V. Reset IC (IC4: S8053ANO) Pin 1 should provide a low level pulse when an AC adapter is connected. Power Switch Pin 22 of CPU should receive a trigger pulse when turning on the switch. Main Clock Generator (X1)Check oscillation at pin 34 of CPU. CPU (LSI1: MSM

25、6626-01) Pin 12 should provide +5 V when turning on the power switch. No sound at allPower Amp. (IC2: LA4127)Check output waveforms of pins 9 and 12. CPU (LSI1: MSM6626-01)Check output waveforms of pins 25 and 26. ROM (LSI2: MN232000CUQ) Check CE signal of pin 10, and OE signal of pin 12. Distorted

26、soundROM (LSI2: MN232000CUQ)Check address/data bus. CPU (LSI1: MSM6626-01)Check output waveforms of pins 25 and 26. Power Amp. (IC2: LA4127)Check output waveforms of pins 9 and 12. Power IC (IC1: CA5668) Check voltages of pins 2 (+9 V) and 6 (+5 V). All or certain keys do not function CPU (LSI1: MSM

27、6626-01) Check KO signals of pins 1 to 4, and 74 to 80. Key MatrixOpen circuit on KO or KI line. A certain key does not function Key MatrixDust on the contact. 12 IC AND TRANSISTOR LEAD IDENTIFICATION 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25

28、24 23 22 21 NC A7 A6 A5 A4 A3 A2 A1 A0 -CE VSS -OE D0 D8 D1 D9 D2 D10 D3 D11 A8 A9 A10 A11 A12 A13 A14 A15 A16 BHE VSS D15 D7 D14 D6 D13 D5 D12 D4 VCC 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 40 39 38 37 36 35 34 33 32 31 30 29 28

29、 27 26 25 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 KO7 KO8 KO9 KO10 KO11 KO12 KO13 KO14 KO15 KO16 KO17 KO18 KO20 KI0 KI1 KI2 KI3 KI4 KI5 KI6 KI7 -MI -RESET REFH DIN8 DIN7 DIN6 DIN5 DIN4 DIN3 DIN2 DIN1 DIN0 KO0 KO1 KO2 KO3 KO4 KO5 KO6 ADR17 ADR18 ADR19 -OE -CE VDD COSO

30、COSI GND TEST1 TEST2 REFL AGND LOUT ROUT AVDD DIN9 DIN10 DIN11 DIN12 DIN13 DIN14 DIN15 ADR0 ADR1 ADR2 ADR3 ADR4 ADR5 ADR6 ADR7 ADR8 ADR9 ADR10 ADR11 ADR12 ADR13 ADR14 ADR15 ADR16 LSI1: MSM6626-01 LSI2: MN232000CUQ 13 VIN VC VDIN GND VADJ VAOU VAGD VDD VDGD APO 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9

31、10 20 19 18 17 16 15 14 13 12 11 PriGND PriIN2+ PriIN2- PriOUT2 PriGHD PoIN2+ PoIN2- BoostSt. PoOUT2 PoGND DC PriIN1+ PriIN1- PriOUT1 PriGND1 PoIN1+ PoIN1- BootsSt. PoOUT1 VCC 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 CLR Q1 D1 D2 Q2 D3 Q3 GND VCC Q6 D6 D5 Q5 D4 Q4 CLK T5, T6: 2SC3112B 1 2 3 E C B IC1:

32、 CA5668 IC2: LA4127 IC3: TC74HC174APIC4: S8053ANO 14 EXPLODED VIEW PARTS LIST CTK-500 Notes: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 separately. 3.The numbers in item colu

33、mn correspond to the same numbers in drawing. FOB Japan NItemCode No.Parts NameSpecificationQM N.R.YenR* Unit Price PCB Assy M5505-MA1M 2011 2912 LSI MN232000CUQ 11690AG 2011 4109 LSI MSM6626-01GS-K-108111,010AK 2105 1071 IC TC74HC174AP 1170AB 2105 2219 IC S-8053ANO 1160AB 2114 0070 IC LA4127 11180A

34、C 2114 1239 IC CA5668 11160AB 2252 0721 Transistor2SC3113B-TPE4-T 2 1016AA 2360 1939 Zener diodeMTZJ5.1C-T77-T 1 2012AA N2370 0987 LED LN28RPX-(TT14) 7 2017CA 2390 0371 DiodeDSK10B-BT-T 2 2011BA 2390 1344 Diode1SS133T-77-T 14 203CA 2590 1190 Ceramic oscillatorEFO-GC4345C3 11130BB 2609 0175 Carbon fi

35、lm resistorERD-S2TJ-3R3T-T 2 203CA 2609 0245 Carbon film resistorERD-S2TJ-622T-T 2 202CA 2609 0287 Carbon film resistorERD-S2TJ-270T-T 2 202CA 2616 0324 Carbon film resistorERD-S2TJ-100T-T 1 203CA 2616 0332 Carbon film resistorERD-S2TJ-101T-T 28 203CA 2616 0340 Carbon film resistorERD-S2TJ-331T-T 6

36、202CA 2616 0375 Carbon film resistorERD-S2TJ-102T-T 4 203CA 2616 0413 Carbon film resistorERD-S2TJ-472T-T 2 203CA 2616 0430 Carbon film resistorERD-S2TJ-103T-T 8 203CA 2616 0464 Carbon film resistorERD-S2TJ-473T-T 1 203CA 2616 0570 Carbon film resistorERD-S2TJ-123T-T 1 202CA 2616 0588 Carbon film re

37、sistorERD-S2TJ-471T-T 1 203CA 2616 0634 Carbon film resistorERD-S2TJ104T-T 2 203CA 2616 0677 Carbon film resistorERD-S2TJ-220T-T 5 203CA 2801 7196 Electrolytic capacitor10RE2-33-T2-T 2 2013CA 2801 7469 Electrolytic capacitorECE-A1CU471ZB-T 2 1029CA 2801 8176 Electrolytic capacitorECE-A1CU220B-T 1 10

38、12CA 2801 8197 Electrolytic capacitorECE-A1AU101B-T 2 1013CA 2801 8204 Electrolytic capacitorECE-A1CU221B-T 1 1022CA 2801 8211 Electrolytic capacitorECE-A0JU101B-T 4 1013CA 2801 8449 Electrolytic capacitorECE-A1CU101B-T 1 1017CA 2801 9121 Electrolytic capacitorECE-A0JU471B-T 3 1021CA 2801 9128 Elect

39、rolytic capacitorECE-A0JU221B-T 4 1017CA 2801 9821 Electrolytic capacitorECE-A1AU220B-T 2 1010CA 2805 0526 Electrolytic capacitor10RE2-1000 2 1030CA 2807 1023 Electrolytic capacitor50RE2-1-T2-T 1 1015CA 2813 0245 Semiconductive capacitorRT-C50TKYR103K-T 3 207CA 2813 1302 Semiconductive capacitorRT-B

40、90TKYR104K-T 8 2010CA 2813 1393 Semiconductive capacitorRT-C40TKYR222K-T 2 2010CA 2813 1400 Semiconductive capacitorRT-C50TKYR562K-T 2 205CA 2818 0365 Ceramic capacitorRT-HE50TKYB102K-T 2 203CA 2818 0446 Ceramic capacitorRT-HE40TKYB101K-T 7 204CA 2818 0494 Ceramic capacitorRT-HE80TKSL331J-T 2 209CA

41、2818 1221 Ceramic capacitorRT-HE40TKCH050D-T 1 205CA 2819 5460 Module capacitorCNB5X101K 1 1035CA 2830 6229 Mylar capacitorAMZV-104K50-T 2 1013CA 2845 0014 Module capacitorCNB8X561M 1560CB 2845 0182 Module capacitorCNB6X101K 1543CA 2845 0280 Ferrite beadsEXC-ELDR35C 2 2013CA 2845 2261 Three-polarity

42、 capacitorEXC-ECT223ZVC 3 2013CA 3501 7049 DC jack HEC2305-01-330 1529AA 3612 0711 Miniature jackYKB21-5101 1590BB Notes: N New parts M Minimum order/supply quantity R Rank 15 FOB Japan NItemCode No.Parts NameSpecificationQM N.R.YenR* Unit Price 3719 2317 Ribbon cable M237S DF0H02110-353580351 1016C

43、A 3719 3584 Ribbon cable M505C (4-pin) DF5H04135-MM 1 1019CA 3719 3591 Ribbon cable M505D DF5H02290-MM 1 1020CA 3719 3598 Ribbon cable M505L DF5H02160-353580351 1020CA N3841 0959 InductorELE-R100KR-T 5 1025CA 4317 3042 Blank PCB M5505-MA1M M111131B-1 11800CI 2765 1211 Slide volumeEWA-MJCC20B23 11110

44、BB JB3719 3577 Ribbon cable M505B (5-pin) DF5H05100-MM 1 1018CA 4317 3052 Blank PCB M5505-MA2M M111131B-2 1 1013CA 3665 0238 Pin assemblyIMSA-1068-17Z174 1567CB 4317 3030 Blank PCB M5505-MA3 M211408-1 1 1011CA N6922 5200 PCB assy M5505-MA1M,2M,3M111130*2 115,100B AA PCB Assy Keyboard 2305 5023 Diode

45、1S1588-TP3-T61 208CA JX3725 2527 PC joiner MASK61JSF50-11-1601 1042CA JA0009 2467 PC joiner M505AJSF50-17-240M1590CB 4317 2611 Blank PCB M619K-KY1MM111074A-111130CB 4317 2620 Blank PCB M619K-KY2MM111075-111110CB Keyboard Assy 16917 4474 White key set CEGBM110589D-151120AB 26917 4484 White key set DF

46、ASM110590D-111110AB 36917 4494 White key set DFAM110591D-141170AB 46917 4506 Black key 10PM110594F-121130AB 56918 5996 Black key 5PM110594F-31581AB 66917 4453 TAC 31M110603C-111190BC 76919 0410 TAC30M110930-111190BC 6919 4330 Felt ASK-LM411714-11 2014CA 6919 4340 Felt ASK-RM411715-11 2014CA 86919 56

47、30 KB chassis 61B-GDM111053-1111,340CO Case 96919 5330 Slide knob 271 M311521-1 3 2013BA 106919 5340 Slide volume knob 271 M311530-1 1 2013BA N116922 5711 Upper case sub assyM211767A*1 111,230CN 126909 5890 SL contact12D CSB-12D 3 1035BA 136921 1250 Button M505A M311534-3 5 1022BA 146920 7160 Button

48、 M505A M311534-2 1 1022BA 156920 7120 Button M505B M211342-1 11190BC 166920 7151 Contact rubber M505A M311675A-1 11110BB 176920 7130 Button M505C M211343-1 11150BB 186920 9960 Button M505D M211344-2 1596BB 193831 0357 Speaker1221AF 211,000BK N206922 5732 Lower case sub assyM211236L*17 111,210CM 20-16902 6140 Battery spring 90 (-) M41226-1 1 1027CA 20-26903 2150 Battery sparing B (+) M41330-1 1 1018CA 20-36919 3190 Key damper 61 M411615-1 1555CA N6922 5080 Rating plateM311202-43 1 1013CA N2