{"id":9154,"date":"2022-01-03T23:48:33","date_gmt":"2022-01-03T14:48:33","guid":{"rendered":"https:\/\/y2tech.net\/blog\/?p=9154"},"modified":"2022-01-09T23:45:29","modified_gmt":"2022-01-09T14:45:29","slug":"repairing-denon-da-300usb-dac","status":"publish","type":"post","link":"https:\/\/y2tech.net\/blog\/audio\/digital-audio\/repairing-denon-da-300usb-dac-9154\/","title":{"rendered":"DENON DA-300USB\u306e\u518d\u6539\u9020"},"content":{"rendered":"

DA-300USB\u304c\u58ca\u308c\u305f\u306e\u3067\u518d\u5ea6\u6539\u9020\u3092\u884c\u3063\u3066\u307f\u305f<\/h3>\r\n
\r\n

\u5927\u5206\u4ee5\u524d\u306e\u8a18\u4e8b\u300eDA-300USB\u306e\u96fb\u6e90\u5efb\u308a\u3092\u30b0\u30ec\u30fc\u30c9\u30a2\u30c3\u30d7\u3057\u3066\u307f\u305f<\/a>\u300f\u3067DA-300USB\u306e\u8ca7\u76f8\u306a\u96fb\u6e90\u5efb\u308a\u3092\u5927\u6539\u9020\u3057\u3066\u3001\u96fb\u6e90\u30c8\u30e9\u30f3\u30b9\u65b9\u5f0f\u306b\u3088\u308b\u30bb\u30d1\u30ec\u30fc\u30c8DC\u7d66\u96fb\u5316\u3092\u884c\u3044\u5927\u5e45\u306a\u97f3\u8cea\u6539\u5584\u3092\u884c\u3063\u3066\u3044\u308b\uff0eDA-300USB\u306fDENON\u306eDAC\u88fd\u54c1\u3068\u3057\u3066\u306f\u521d\u671f\u306e\u88fd\u54c1\u3067\u3042\u308a\u3001\u5b9f\u58f2\u4fa1\u683c\u30675\u301c6\u4e07\u5186\u7a0b\u5ea6\u306eUSB DAC\u5165\u9580\u6a5f\u3068\u3044\u3063\u305f\u3068\u3053\u308d\u3060\u308d\u3046\u304b\uff0e<\/p>\r\n
\r\n

\u3053\u306e\u6a5f\u7a2e\u306e\u58f2\u308a\u306fDENON\u304c\u58f2\u308a\u306b\u3057\u3066\u3044\u308bAL32\u3068\u540d\u4ed8\u3051\u305f\u30c7\u30b8\u30bf\u30eb\u30d7\u30ed\u30bb\u30c3\u30b7\u30f3\u30b0(DSP)\u306b\u3088\u308b\u4fe1\u53f7\u51e6\u7406\u3092\u884c\u3044\u3001\u88dc\u9593\u51e6\u7406\u306b\u3088\u308a\u5143\u306e\u97f3\u58f0\u4fe1\u53f7\u3092\u63a8\u5b9a\u3057\u305f\u4e0a\u3067\u518d\u751f\u3092\u884c\u3063\u3066\u3044\u308b\u306e\u3060\u305d\u3046\u3060\uff0e\u4ee5\u524d\u3001DAC\u30c1\u30c3\u30d7(TI PCM1795\uff09\u306e\u30c7\u30b8\u30bf\u30eb\u5165\u529b\u4fe1\u53f7\u306e\u6ce2\u5f62\u3092\u89b3\u5bdf\u3057\u305f\u3053\u3068\u304c\u3042\u3063\u305f\u304c\u3001DAC\u306e\u5165\u529b\u4fe1\u53f7\u306f DSP\u30ab\u30fc\u30c9\u306b\u3088\u3063\u3066\u5168\u3066\u306e\u5165\u529b\u4fe1\u53f7\u304c192KHz 32bit\u306b\u5909\u63db\uff08\u30a2\u30c3\u30d7\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\uff09\u3055\u308c\u305f\u3044\u305f\uff0e\u3053\u306e\u65b9\u6cd5\u3060\u3068\u3001DAC\u306e\u30a2\u30ca\u30ed\u30b0\u51fa\u529b\u90e8\u5206\u306e\u30d5\u30a3\u30eb\u30bf\u30fc\u8a2d\u8a08\u304c\u5358\u7d14\u5316\u3067\u304d\u305d\u3046\u3060\uff0e<\/p>\r\n
\r\n

\u79c1\u306e\u30e1\u30a4\u30f3\u306eDAC\u74b0\u5883\u306f\u81ea\u4f5c\u6a5f(ESS ES9038Pro\u3001AKM AK4497\uff09\u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u304c\u3001\u79c1\u304c\u8cfc\u5165\u3057\u305f\u552f\u4e00\u306e\u5e02\u8ca9\u54c1\u3067\u3042\u308bDA-300USB\u306e\u97f3\u3082\u7d50\u69cb\u6c17\u306b\u5165\u3063\u3066\u3044\u308b\uff0eDENON\u304c\u30c1\u30e5\u30fc\u30cb\u30f3\u30b0\u3057\u3066\u3044\u308b\u306e\u3067\u3001\u96fb\u6e90\u90e8\u4ee5\u5916\u306e\u30e1\u30a4\u30f3\u90e8\u5206\u306e\u97f3\u8cea\u306f\u3053\u306e\u30af\u30e9\u30b9\u306e\u88fd\u54c1\u3068\u3057\u3066\u306f\u4e0a\u8cea\u306a\u7269\u3060\u3068\u601d\u3046\uff0e<\/p>\r\n
\r\n

\u4eca\u56de\u3001DA-300USB\u3092\u518d\u6539\u9020\u3059\u308b\u3053\u3068\u306b\u306a\u3063\u305f\u306e\u306f\u3001\u79c1\u306e\u5358\u7d14\u306a\u30df\u30b9\u3067DAC\u30c1\u30c3\u30d7\u3092\u5439\u3063\u98db\u3070\u3057\u3066\u3057\u307e\u3063\u305f\u304b\u3089\u3067\u3001DAC\u30c1\u30c3\u30d7\u306e\u4ea4\u63db\u3064\u3044\u3067\u306b\u96fb\u89e3\u30b3\u30f3\u30c7\u30f3\u30b5\u30fc\u3084OP\u30a2\u30f3\u30d7\u306e\u4ea4\u63db\u3092\u884c\u3063\u3066\u307f\u308b\u3053\u3068\u306b\u3057\u305f\uff0eDA-300USB\u3067\u306f\u30d8\u30c3\u30c9\u30d5\u30a9\u30f3\u306f\u6ec5\u591a\u306b\u4f7f\u7528\u3057\u306a\u3044\u304c\u3001\u3053\u306e\u969b\u306a\u306e\u3067\u5927\u5206\u4ee5\u524d\u304b\u3089\u58ca\u308c\u3066\u3044\u305f\u96fb\u5b50\u30dc\u30ea\u30e5\u30fc\u30e0\u90e8\u5206\u3092\u53d6\u3063\u6255\u3063\u3066\u3001\u30d8\u30c3\u30c9\u30d5\u30a9\u30f3\u306e\u30dc\u30ea\u30e5\u30fc\u30e0\u3092\u30a2\u30ca\u30ed\u30b0\u30dc\u30ea\u30e5\u30fc\u30e0\u3067\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u3059\u308b\u3053\u3068\u306b\u3057\u305f\uff0e<\/p>\r\n
\r\n

\u3069\u3046\u305b\u4f5c\u308a\u76f4\u3059\u306e\u306a\u3089\u30d0\u30e9\u30f3\u30b9\u51fa\u529b\u5316\u3082\u3084\u3063\u3066\u3057\u307e\u3048\u3068\u8a00\u3046\u3053\u3068\u3067\u3001\u57fa\u677f\u306e\u30ec\u30a4\u30a2\u30a6\u30c8\u3084\u96fb\u6e90\u30e2\u30b8\u30e5\u30fc\u30eb\u306e\u4f5c\u308a\u76f4\u3057\u3092\u884c\u3044\u30b3\u30f3\u30d1\u30af\u30c8\u306a\u7b50\u4f53\u306b\u30ae\u30c3\u30b7\u30ea\u3068\u90e8\u54c1\u3092\u8a70\u3081\u8fbc\u3093\u3067\u307f\u305f\uff0e\u96fb\u6e90\u90e8\u306e\u767a\u71b1\u3082\u554f\u984c\u306a\u3055\u305d\u3046\u306a\u306e\u3067\u3001\u3053\u308c\u307e\u3067\u306e\u3088\u3046\u306b\u30b1\u30fc\u30b9\u306e\u5929\u677f\u3092\u5916\u3057\u3066\u653e\u71b1\u3055\u305b\u308b\u5fc5\u8981\u306f\u306a\u3055\u305d\u3046\u3060\uff0e<\/p>\r\n
\r\n

\r\n\"Modified\r\n
\r\n\uff12\u5ea6\u76ee\u306e\u5927\u5e45\u306a\u6539\u9020\u3092\u884c\u3063\u305fDA-300USB<\/span>\r\n
\r\n
\r\n\"Modified\r\n
\r\n\u30d0\u30c3\u30af\u30d1\u30cd\u30eb\u3092\u5168\u9762\u7684\u306b\u4f5c\u308a\u76f4\u3057\u3066\u7b50\u4f53\u306e\u90e8\u54c1\u306e\u30ec\u30a4\u30a2\u30a6\u30c8\u3092\u5de5\u592b\u3059\u308b<\/span>\r\n
\r\n
\r\n<\/div>\r\n
\r\n

\u4eca\u56de\u306f\u3001\u624b\u6301\u3061\u306e\u30d1\u30fc\u30c4\u306e\u95a2\u4fc2\u3067\u5927\u5e45\u306a\u90e8\u54c1\u306e\u4ea4\u63db\u306f\u884c\u308f\u306a\u304b\u3063\u305f\u304c\u3001DAC\u5efb\u308a\u306e\u96fb\u89e3\u30b3\u30f3\u30c7\u30f3\u30b5\u3092\u30d1\u30fc\u30c4\u7bb1\u306b\u7720\u3063\u3066\u3044\u305f\u30cb\u30c1\u30b3\u30f3\u306eMuse KZ\u3001Panasonic \u306eOS CON \u306a\u3069\u306b\u4ea4\u63db\u3057\u3066\u307f\u305f\uff0eOP\u30a2\u30f3\u30d7\u3082\u5168\u9762\u7684\u306b\u4ea4\u63db\u3057\u305f\u304b\u3063\u305f\u304c\u3001Line\u51fa\u529b\u3068\u30d8\u30c3\u30c9\u30d5\u30a9\u30f3\u30a2\u30f3\u30d7\u306e\u30d7\u30ea\u30a2\u30f3\u30d7\u90e8\u5206\u3092\u3001JRC\u306eMUSES8920\u306b\u53d6\u308a\u66ff\u3048\u3066\u307f\u305f\uff0e<\/p>\r\n
\r\n

Line\u51fa\u529b\u3068\u30d8\u30c3\u30c9\u30d5\u30a9\u30f3\u51fa\u529b\u306e\u30ab\u30d7\u30ea\u30f3\u30b0\u30b3\u30f3\u30c7\u30f3\u30b5\u3092\u30cb\u30c1\u30b3\u30f3\u306e\u7121\u6975\u6027MUSE ES\u30b7\u30ea\u30fc\u30ba\uff08\u30e1\u30bf\u30ea\u30c3\u30af\u30b0\u30ea\u30fc\u30f3\u306e\u5974\uff09\u306b\u4ea4\u63db\u3057\u3066\u307f\u305f\u304c\u3001\u3042\u307e\u308a\u306e\u97f3\u8cea\u306e\u60aa\u3055\uff08\u3053\u3082\u3063\u305f\u3088\u3046\u306a\u5909\u306a\u97f3\uff09\u306b\u3001\u5143\u306e\u30a8\u30eb\u30ca\u30fc\u88fd\u306e\u96fb\u89e3\u30b3\u30f3\u30c7\u30f3\u30b5\uff08DENON\u4ed5\u69d8\u30b7\u30eb\u30df\u30c3\u30af\uff09\u306b\u623b\u3057\u305f\uff0e<\/p>\r\n
\r\n

\u30d1\u30fc\u30c4\u306e\u4ea4\u63db\u3067\u97f3\u8cea\u306e\u5909\u5316\u3092\u697d\u3057\u3080\u3053\u3068\u304c\u53ef\u80fd\u3060\u304c\u3001\u4e00\u3064\u306e\u30d1\u30fc\u30c4\u306e\u4ea4\u63db\u306b\u3088\u3063\u3066\u97f3\u8cea\u304c\u826f\u3044\u65b9\u3078\u8ee2\u3076\u3053\u3068\u3082\u3042\u308c\u3070\u60aa\u3044\u65b9\u3078\u8ee2\u3076\u4e8b\u3082\u3042\u308b\uff0e\u3084\u306f\u308a\u30e1\u30fc\u30ab\u30fc\u88fd\u306e\u6c4e\u7528\u88fd\u54c1\u306f\u305d\u308c\u306a\u308a\u306e\u30d0\u30e9\u30f3\u30b9\u3067\u97f3\u8cea\u30c1\u30e5\u30fc\u30cb\u30f3\u30b0\u3055\u308c\u3066\u3044\u308b\u306e\u3067\u3001\u97f3\u8cea\u7684\u306b\u306f\u300e\u53ef\u3082\u7121\u304f\u4e0d\u53ef\u3082\u7121\u304f\u300f\u3068\u3044\u3046\u3068\u3053\u308d\u306a\u306e\u3060\u308d\u3046\uff0e<\/p>\r\n
\r\n
\r\n

\r\n\"Main\r\n
\r\nDSP\u30c9\u30fc\u30bf\u30fc\u30dc\u30fc\u30c9\u3092\u5916\u3057\u305f\u30e1\u30a4\u30f3\u57fa\u677f<\/span>\r\n
\r\n
\r\n\"DAC\r\n
\r\nDAC\u306e\u4e3b\u8981\u90e8\u5206\uff08I\/V\u5909\u63db\u3001Line\u51fa\u529b\u3001\u96fb\u5b50\u30dc\u30ea\u30e5\u30fc\u30e0\u3001\u30d8\u30c3\u30c9\u30d5\u30a9\u30f3\u30a2\u30f3\u30d7\uff09<\/span>\r\n
\r\n
\r\n\"Remove\r\n
\r\nDAC\u30c1\u30c3\u30d7(PCM1795)\u3068\u5468\u56f2\u306e\u96fb\u89e3\u30b3\u30f3\u30c7\u30f3\u30b5\u3092\u53d6\u308a\u5916\u3059<\/span>\r\n
\r\n
\r\n\"I\/V\r\n
\r\nI\/V\u5909\u63db\u56de\u8def\u306b\u306f\u30ed\u30fc\u30e0\u306eOP\u30a2\u30f3\u30d7\u304c\u4f7f\u308f\u308c\u3066\u3044\u305f<\/span>\r\n
\r\n
\r\n\"Modified\r\n
\r\n\u5e73\u8861\u30e9\u30a4\u30f3\u51fa\u529b\u7528\u3068\u30d8\u30c3\u30c9\u30d5\u30a9\u30f3\u30dc\u30ea\u30e5\u30fc\u30e0\u5236\u5fa1\u306e\u305f\u3081\u306e\u5165\u51fa\u529b\u30b1\u30fc\u30d6\u30eb\u3092\u57fa\u677f\u304b\u3089\u53d6\u308a\u51fa\u3059<\/span>\r\n
\r\n
\r\n<\/div>\r\n
\r\n
\r\n

DSP\u30dc\u30fc\u30c9\u96fb\u6e90\u7528\u306e\u30c8\u30e9\u30f3\u30b9\u3092\u30c8\u30ed\u30a4\u30c0\u30eb\u306b\u5909\u66f4\u3057\u3066\u96fb\u6e90\u30ec\u30ae\u30e5\u30ec\u30fc\u30bf\u306e\u653e\u71b1\u65b9\u6cd5\u3092\u5909\u66f4<\/h4>\r\n
\r\n

\u30e1\u30a4\u30f3\u57fa\u677f\u7528\u306e +5V\/ +-12V \u7cfb\u306e\u96fb\u6e90\u304c\u30b9\u30da\u30fc\u30b9\u306e\u95a2\u4fc2\u3067\u57fa\u677f\u3092\u88cf\u8fd4\u3057\u306b\u8a2d\u7f6e\u3057\u305f\u95a2\u4fc2\u3067\u3001\u96fb\u6e90\u30ec\u30ae\u30e5\u30ec\u30fc\u30bf\u306e\u5ec3\u71b1\u304c\u4e0a\u624b\u304f\u884c\u304b\u305a\u7d50\u69cb\u71b1\u304c\u3053\u3082\u3063\u3066\u3057\u307e\u3046\u306e\u3067\u3001DSP\u57fa\u677f\u7528\u306e\u30ab\u30c3\u30c8\u30b3\u30a2\u306e\u96fb\u6e90\u30c8\u30e9\u30f3\u30b9\u3092\u5171\u7acb\u96fb\u5b50\u306eHDB-12 (9Vx2) \u30c8\u30ed\u30a4\u30c0\u30eb\u30b3\u30a2\u306b\u5909\u66f4\u3057\u3001\u30e1\u30a4\u30f3\u57fa\u677f\u7528\u306e\u96fb\u6e90\u57fa\u677f\u3092\u4f5c\u308a\u76f4\u3057\u3066\u96fb\u6e90\u30ec\u30ae\u30e5\u30ec\u30fc\u30bf\u3092\u30b1\u30fc\u30b9\u306e\u30b5\u30a4\u30c9\u30d1\u30cd\u30eb\u306e\u30d2\u30fc\u30c8\u30b7\u30f3\u30af\u306b\u76f4\u63a5\u53d6\u308a\u4ed8\u3051\u308b\u3053\u3068\u306b\u3057\u305f\uff0eOP\u30a2\u30f3\u30d7\u7528\u306e\u96fb\u6e90\u96fb\u5727\u3092 +-15V \u306b\u4e0a\u3052\u3066\u3001\u30b7\u30ea\u30fc\u30ba\u96fb\u6e90\u30ec\u30ae\u30e5\u30ec\u30fc\u30bf\u306e\u30c9\u30ed\u30c3\u30d7\u30a2\u30a6\u30c8\u3092\u5c0f\u3055\u304f\u3057\u305f\u52b9\u679c\u3068\u76f8\u307e\u3063\u3066\u3001\u30b1\u30fc\u30b9\u306e\u4e0a\u84cb\u3092\u9589\u3081\u3066\u5bc6\u9589\u3057\u3066\u3082\u5b89\u5fc3\u3057\u3066\u904b\u8ee2\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u3063\u305f\uff0e<\/p>\r\n
\r\n\r\n
\r\n

\r\n\"New \r\n
\r\n\u96fb\u6e90\u30c8\u30e9\u30f3\u30b9\u306e\u4ea4\u63db\u3067\u96fb\u6e90\u57fa\u677f\u306e\u914d\u7f6e\u304c\u697d\u306b\u306a\u308a\u3001\u30b9\u30e0\u30fc\u30ba\u306a\u5ec3\u71b1\u304c\u53ef\u80fd\u3068\u306a\u3063\u305f<\/span>\r\n
\r\n
\r\n\"\u4e0a\u84cb\u3092\u9589\u3058\u3066\u3082\u554f\u984c\u306a\u304f\u7a3c\u50cd\u53ef\u80fd\"\r\n
\r\n\u84cb\u3092\u3057\u305f\u72b6\u614b\u3067\u3082\u5b89\u5fc3\u3057\u3066\u4f7f\u7528\u53ef\u80fd\u3068\u306a\u3063\u305f<\/span>\r\n
\r\n
\r\n\"Checking\r\n
\r\nDA-300USB\u306e\u30d3\u30eb\u30c8\u30a4\u30f3\u30a2\u30f3\u30d7\u3068\u81ea\u4f5c\u306e\u30d0\u30e9\u30f3\u30b9\u30c9\u30e9\u30a4\u30d6\u30d8\u30c3\u30c9\u30d5\u30a9\u30f3\u30a2\u30f3\u30d7\u3068\u306e\u805e\u304d\u6bd4\u3079<\/span>\r\n
\r\n
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