Marantz SR 5300 Service Bulletin

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Approved by H.TAMURAWritten by K.ONOWQ-19 2 817/additional rule3 (1st Issue 2003-03-19)Date :15-May-2003 ModelSR5300/SR6300 Page :1/1 REF.NBR :MZ03-007 Circulation:Application: Subject: Int.ref :[ PHENOMENON] Abnormal noise appears from speaker after 10 minutes or so with digital input [SOLUTION] Replace DSP IC CS493263(IC709) to new type one (Parts No. *HC107260R). The countermeasure needs to apply to this claim only. [REMARKS] New IC has been applied in the production after the following serial number and after. SR5300/N1G: MZ000241001962 and later SR5300/N1B: MZ000241002811 and later SR5300/U1B: MZ000242002611 and later SR5300/A1B: MZ000242000326 and later SR5300/K1G: MZ000242000979 and later SR6300/N1G: MZ000241000987 and later SR6300/N1B: MZ000241001139 and later SR6300/U1B: MZ000241000862 and later SR6300/K1G: MZ000242000361 and later SERVICE BULLETIN Abnormal noise from speaker xfor information customer complaint in case of service mandatory ...................See below