Casio CTK-511 Manuel d'utilisateur

ELECTRONIC KEYBOARDCTK-511CTK-511INDEX

— 8 —MAJOR WAVEFORMS1 Clock pulseMSM6755B-17 pin 3212 Power source DVDDJC connector pin 83 APO signalJC connector pin 2234 Sound waveform (R-ch) Tone:

— 9 —PRINTED CIRCUIT BOARDSMain PCB JCM443-MA1MTop ViewBottom View52138469 7

— 10 —SCHEMATIC DIAGRAMSMain PCB JCM443-MA1MSED1278F2A1501.2 K176234598

— 11 —Sub PCBs JCM451-MA2M/MA3M

— 12 —Console PCBs JCM443-CN1M/CN2M

— 13 —Keyboard PCBs JCM6112K-KY1M/KY2M

— 14 —LCDCommonSegmentCOM7COM6COM5COM4COM3COM2COM1SEG1SEG2SEG3SEG4SEG5SEG6SEG7SEG8SEG9SEG10SEG21SEG22SEG23SEG24SEG25SEG26SEG27SEG28SEG29SEG30SEG31SEG3

— 15 —EXPLODED VIEW168710911126R-35151517181927252614202122132341R-1R-22324

Notes: This parts list does not include the cosmetic parts, whichparts are marked with item No. "R-X" in the explodedview.Contact our spare

Item Code No. Parts Name Specification Q RMain PCB1 6926 0460 PCB/ASS'Y (MA1M) M240626*1 1 BLSI1 2012 5638 LSI/MASK-ROM LC372100PM-G48TE-L 1 ALSI

CONTENTSSpecifications ...

Item Code No. Parts Name Specification Q R21 6926 8050RUBBER/BUTTONM240561-2 1 C22 6926 8060RUBBER/BUTTONM140525-2 1 C236926 8090PANEL/DISPLAYM240574-

CASIO TECHNO CO.,LTD.Overseas Service Division8-11-10, Nishi-ShinjukuShinjuku-ku, Tokyo 160-0023, Japan

— 1 —SPECIFICATIONSGENERALKeyboard: 61 standard-size keys, 5 octavesTones: 100Polyphony: 12 notes maximum (6 for certain tones)Auto accompanimentRhyth

— 2 —BLOCK DIAGRAMCPUMSM 6755B-17LSI2KeyboardButtonsLCDLCD DriverSED1278F2ALSI3Reset ICRN5VD40AIC1OscillatorX1, Q1Power Supply CircuitQ201 ~ Q203, Q2

— 3 —CIRCUIT DESCRIPTIONKEY MATRIXNOMENCLATURE OF KEYSKI0 KI1 KI2 KI3 KI4 KI5 KI6 KI7KO0 C2 G#2 E3 C4 G#4 E5 C6 G#6KO1 C#2 A2 F3 C#4 A4 F5 C#6 A6KO2 D

— 4 —CPU (LSI2: MSM6755B-17)The CPU reads sound data from the ROM in accordance with the pressed key and the selected tone; the CPUcan read rhythm dat

— 5 —LCD DRIVER (LSI3: SED1278F2A)The LCD driver can drive a dot matrix LCD having 40 segment and 16 common lines. The LSI contains 240graphic symbols

— 6 —FILTER BLOCKSince the sound signals from the CPU is stepped waveforms, the filter block is added to smooth the waveforms.POWER AMPLIFIER (IC201:

— 7 —OutputSet VoltmeterR623) Equipment connection/ProcedureVop voltage settingInputConnectionInputPointInputSignalAdjustOutputConnectionOutputPointAd