{"id":336,"date":"2015-08-25T14:24:00","date_gmt":"2015-08-25T14:24:00","guid":{"rendered":"http:\/\/machineryequipmentonline.com\/video-equipment\/uncategorized\/audio-record-and-playbackfault-diagnosis-in-audio-systems\/"},"modified":"2015-08-25T14:24:00","modified_gmt":"2015-08-25T14:24:00","slug":"audio-record-and-playbackfault-diagnosis-in-audio-systems","status":"publish","type":"post","link":"http:\/\/machineryequipmentonline.com\/video-equipment\/audio-record-and-playbackfault-diagnosis-in-audio-systems\/","title":{"rendered":"AUDIO RECORD AND PLAYBACK:FAULT DIAGNOSIS IN AUDIO SYSTEMS."},"content":{"rendered":"<div class=\"pxekz6a0dbd992bbcc\" ><script type=\"text\/javascript\">\n\tatOptions = {\n\t\t'key' : '61e5902552e2353963d8d2f1bd1f4a8f',\n\t\t'format' : 'iframe',\n\t\t'height' : 250,\n\t\t'width' : 300,\n\t\t'params' : {}\n\t};\n<\/script>\n<script type=\"text\/javascript\" src=\"\/\/www.highperformanceformat.com\/61e5902552e2353963d8d2f1bd1f4a8f\/invoke.js\"><\/script><\/div><style type=\"text\/css\">\r\n@media screen and (min-width: 1201px) {\r\n.pxekz6a0dbd992bbcc {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 993px) and (max-width: 1200px) {\r\n.pxekz6a0dbd992bbcc {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 769px) and (max-width: 992px) {\r\n.pxekz6a0dbd992bbcc {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 768px) and (max-width: 768px) {\r\n.pxekz6a0dbd992bbcc {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (max-width: 767px) {\r\n.pxekz6a0dbd992bbcc {\r\ndisplay: block;\r\n}\r\n}\r\n<\/style>\r\n<h3 align=\"justify\">FAULT DIAGNOSIS IN AUDIO SYSTEMS<\/h3>\n<p align=\"justify\">Longitudinal sound systems are not difficult to service; the electronics are simple, and identical to those of audio cassette recorders. Hi-Fi audio stages are very similar indeed to those used for the luminance signal, with the same sorts of pre-\/de-emphasis, modulator\/ demodulator, switching and clipping circuits, and similar recording ampli\ufb01er and head preamp designs. The servicing techniques for both  <\/p>\n<p align=\"justify\">are similar, then, and the oscilloscope is the most valuable diagnostic tool here; test cassettes are available from videorecorder manufacturers with Hi-Fi audio test signals recorded to factory-model speci\ufb01cations. For PCM audio systems much diagnostic work can be done by examining key test points for the presence or absence of waveforms and operating voltages. <i>Analysis <\/i>of the signals present in the digital sections, however, calls for very sophisticated test equipment which will rarely be found in an ordinary service workshop (see Chapter  <\/p><div class=\"njhsn6a0dbd992bcd2\" ><script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-0778475562755157\"\n     crossorigin=\"anonymous\"><\/script>\n<!-- 300x600 television-and-video -->\n<ins class=\"adsbygoogle\"\n     style=\"display:inline-block;width:300px;height:600px\"\n     data-ad-client=\"ca-pub-0778475562755157\"\n     data-ad-slot=\"6549443290\"><\/ins>\n<script>\n     (adsbygoogle = window.adsbygoogle || []).push({});\n<\/script><\/div><style type=\"text\/css\">\r\n@media screen and (min-width: 1201px) {\r\n.njhsn6a0dbd992bcd2 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 993px) and (max-width: 1200px) {\r\n.njhsn6a0dbd992bcd2 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 769px) and (max-width: 992px) {\r\n.njhsn6a0dbd992bcd2 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 768px) and (max-width: 768px) {\r\n.njhsn6a0dbd992bcd2 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (max-width: 767px) {\r\n.njhsn6a0dbd992bcd2 {\r\ndisplay: block;\r\n}\r\n}\r\n<\/style>\r\n<div class=\"bkbkq6a0dbd992bc5c\" ><script type=\"text\/javascript\">\n\tatOptions = {\n\t\t'key' : '0c1eb4c533eaedb7b996f49a5a4983a9',\n\t\t'format' : 'iframe',\n\t\t'height' : 300,\n\t\t'width' : 160,\n\t\t'params' : {}\n\t};\n<\/script>\n<script type=\"text\/javascript\" src=\"\/\/www.highperformanceformat.com\/0c1eb4c533eaedb7b996f49a5a4983a9\/invoke.js\"><\/script><\/div><style type=\"text\/css\">\r\n@media screen and (min-width: 1201px) {\r\n.bkbkq6a0dbd992bc5c {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 993px) and (max-width: 1200px) {\r\n.bkbkq6a0dbd992bc5c {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 769px) and (max-width: 992px) {\r\n.bkbkq6a0dbd992bc5c {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 768px) and (max-width: 768px) {\r\n.bkbkq6a0dbd992bc5c {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (max-width: 767px) {\r\n.bkbkq6a0dbd992bc5c {\r\ndisplay: block;\r\n}\r\n}\r\n<\/style>\r\n\n<p align=\"justify\">22).<\/p>\n","protected":false},"excerpt":{"rendered":"<p>FAULT DIAGNOSIS IN AUDIO SYSTEMS Longitudinal sound systems are not difficult to service; the electronics are simple, and identical to those of audio cassette recorders. Hi-Fi audio stages are very similar indeed to those used for the luminance signal, with the same sorts of pre-\/de-emphasis, modulator\/ demodulator, switching and clipping circuits, and similar recording ampli\ufb01er [&hellip;]<br \/><a href=\"http:\/\/machineryequipmentonline.com\/video-equipment\/audio-record-and-playbackfault-diagnosis-in-audio-systems\/\" class=\"more-link\" >Continue reading&#8230;<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[],"aioseo_notices":[],"views":728,"_links":{"self":[{"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/posts\/336"}],"collection":[{"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/comments?post=336"}],"version-history":[{"count":0,"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/posts\/336\/revisions"}],"wp:attachment":[{"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/media?parent=336"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/categories?post=336"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/tags?post=336"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}