Casio WK-1500 Service Manual
Also see for WK-1500: Operation manual
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— 4 —KC0 ~KC7SI0 ~ SI7FI0 ~ FI7Key ControllerLSI107HG52E35PWorking Storage RAM(64K-bit)LSI105SRM2264LM90-BKO1 ~ KO3LED driverIC371BA612LS0 ~LS7ButtonsKI1 ~ KI5 Power SwitchINEA0 ~ EA14ED0 ~ ED7DSPLSI102HG51B115FDRA0 ~ RA19RD0 ~ RD15Sound Source ROM(16M-bit)LSI101TC5316200CF-C112WCK1 SLOP BCKD/A ConverterLSI104UPD6376GSFilterIC101MainVolumePower AmplifierIC402LA4598CPULSI14HD6433294A19FKeyboardA0 ~ A14POWERPower Supply CircuitIC401, Q401 ~ Q405VCC AVDD VDDLVDD DVDDVCEffect RAM(256K-bit)LSI103LC33832M-70D0~D7SpeakersOutputA0 ~A14A0 ~ A3A0 ~ A27-seg. LEDLEDsLED driverQ104 ~ Q111KO SignalGenerator IC102TC74HC174AFLa ~ Lg, LpMIDIOUTReset ICIC5RH5VL36AAP40P41KO0 ~KO5FilterIC101RESETBLOCK DIAGRAM |
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