RolandRoland CorporationSERVICE INFORMATIONSERVICE DEPARTMENTMODELNoDATE1990-03-09D A C-1 5D/X DService Information No.100432.SUBJECTCHANGING VALUE O F C ERAMIC CAPAC I TORAND RESISTORCONTENTS[CHANGE]CHANGED THE CERAMTC CAPACTTOR AND THE RESISTOR ON THE PM BOARD.BEFOREAFTERCERAMICCAPACI TOR10P F⊥5pF(C65)RESISTOR561K247K2(R77)1/6w1/6W[REASON]IC8 ON THE PM BOARD CHANGES FROM "TC74HCU04P"(PN#15169512TO)TO"TC74HCUO4AP"(SAME PART CODE)BECAUSE OF NO MORE PRODUCTION.*WHEN YOU CHANGE THE IC 8 TO "TC74HCUO4AP",PLEASE DO THE ABOVE CIANGEOR YOU CANNOT COMPLETE "VCO(LOW END,HI END)"AD.JUSTMENT.[E F FE C TI V EAA53100 UP[NOTE]PLEASE DO THE SAME MODIFICATION OF C78 AND R106 OF DAC-50D/XD WHEN YOUCHANGE THE 1C8 TO "TC74HCUO4AP"ON THE PM HOARD OF DAC-50D/XD3(00432
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