{"id":2941,"date":"2015-10-01T18:51:30","date_gmt":"2015-10-01T18:51:30","guid":{"rendered":"http:\/\/41j.com\/blog\/?p=2941"},"modified":"2015-10-02T23:44:32","modified_gmt":"2015-10-02T23:44:32","slug":"nec-np215-dlp-projector-teardown","status":"publish","type":"post","link":"https:\/\/41j.com\/blog\/2015\/10\/nec-np215-dlp-projector-teardown\/","title":{"rendered":"NEC NP215 DLP Projector Teardown"},"content":{"rendered":"<p><a href=\"http:\/\/41j.com\/blog\/2015\/10\/nec-np215-dlp-projector-teardown\/p1000964\/\" rel=\"attachment wp-att-2948\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/41j.com\/blog\/wp-content\/uploads\/2015\/10\/P1000964.jpg\" alt=\"P1000964\" width=\"1984\" height=\"1116\" class=\"aligncenter size-full wp-image-2948\" \/><\/a><\/p>\n<p>I&#8217;ve been playing with an old, faulty NEC Projector. It uses a DDP2230 DLP controller, for which no datasheet is available. It took a bit of fiddling to get everything working out of the case and the mercury lamp burnt a nice mark in my desk&#8230; I did manage to get some video of the DMD (1076-6039b IIRC) working:<\/p>\n<p><iframe loading=\"lazy\" width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/l2V_VAIqEnE\" frameborder=\"0\" allowfullscreen><\/iframe><\/p>\n<p>I also a traced out the header (see below), the +\/- ~20v signals appear to match the mirror bias\/reset signals, but I wasn&#8217;t able to see anything on what looked like differential pairs going into the DMD. And without the datasheet I&#8217;m not quite sure what the signals should look like.<\/p>\n<p>There is 9 page datasheet for the DMD device itself though the part number doesn&#8217;t match completely. In typical vendor style they&#8217;ve also masked out all the pinout information (available under NDA I&#8217;d guess). A few screen grabs below&#8230;<\/p>\n<p><a href=\"http:\/\/41j.com\/blog\/2015\/10\/nec-np215-dlp-projector-teardown\/attachment\/10766039\/\" rel=\"attachment wp-att-2942\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/41j.com\/blog\/wp-content\/uploads\/2015\/10\/10766039.png\" alt=\"10766039\" width=\"838\" height=\"423\" class=\"aligncenter size-full wp-image-2942\" \/><\/a><\/p>\n<p><a href=\"http:\/\/41j.com\/blog\/2015\/10\/nec-np215-dlp-projector-teardown\/10766039_2\/\" rel=\"attachment wp-att-2943\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/41j.com\/blog\/wp-content\/uploads\/2015\/10\/10766039_2.png\" alt=\"10766039_2\" width=\"826\" height=\"418\" class=\"aligncenter size-full wp-image-2943\" \/><\/a><\/p>\n<p><a href=\"http:\/\/41j.com\/blog\/2015\/10\/nec-np215-dlp-projector-teardown\/10766039_3\/\" rel=\"attachment wp-att-2944\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/41j.com\/blog\/wp-content\/uploads\/2015\/10\/10766039_3.png\" alt=\"10766039_3\" width=\"725\" height=\"706\" class=\"aligncenter size-full wp-image-2944\" \/><\/a><\/p>\n<p><a href=\"http:\/\/41j.com\/blog\/2015\/10\/nec-np215-dlp-projector-teardown\/p1000967\/\" rel=\"attachment wp-att-2945\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/41j.com\/blog\/wp-content\/uploads\/2015\/10\/P1000967.jpg\" alt=\"P1000967\" width=\"1984\" height=\"1116\" class=\"aligncenter size-full wp-image-2945\" \/><\/a><\/p>\n<p><a href=\"http:\/\/41j.com\/blog\/2015\/10\/nec-np215-dlp-projector-teardown\/p1000966\/\" rel=\"attachment wp-att-2946\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/41j.com\/blog\/wp-content\/uploads\/2015\/10\/P1000966.jpg\" alt=\"P1000966\" width=\"700\" height=\"394\" class=\"aligncenter size-large wp-image-2946\" \/><\/a><\/p>\n<p><a href=\"http:\/\/41j.com\/blog\/2015\/10\/nec-np215-dlp-projector-teardown\/p1000965\/\" rel=\"attachment wp-att-2947\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/41j.com\/blog\/wp-content\/uploads\/2015\/10\/P1000965.jpg\" alt=\"P1000965\" width=\"1984\" height=\"1116\" class=\"aligncenter size-full wp-image-2947\" \/><\/a><\/p>\n<p><iframe loading=\"lazy\" width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/ubG4TK4z9bY\" frameborder=\"0\" allowfullscreen><\/iframe><\/p>\n<p>Pin 7 etc. Mirror reset\/bias<br \/>\n<a href=\"http:\/\/41j.com\/blog\/2015\/10\/nec-np215-dlp-projector-teardown\/lcry0602p12674_20151002_061819\/\" rel=\"attachment wp-att-2957\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/41j.com\/blog\/wp-content\/uploads\/2015\/10\/LCRY0602P12674_20151002_061819.png\" alt=\"LCRY0602P12674_20151002_061819\" width=\"800\" height=\"547\" class=\"aligncenter size-full wp-image-2957\" \/><\/a><\/p>\n<p>Example of what I assume is LVDS trace:<br \/>\n<a href=\"http:\/\/41j.com\/blog\/2015\/10\/nec-np215-dlp-projector-teardown\/lcry0602p12674_20151002_074700\/\" rel=\"attachment wp-att-2959\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/41j.com\/blog\/wp-content\/uploads\/2015\/10\/LCRY0602P12674_20151002_074700.png\" alt=\"LCRY0602P12674_20151002_074700\" width=\"800\" height=\"547\" class=\"aligncenter size-full wp-image-2959\" \/><\/a><\/p>\n<p>Length matched differential traces?:<br \/>\n<a href=\"http:\/\/41j.com\/blog\/2015\/10\/nec-np215-dlp-projector-teardown\/photo5-2\/\" rel=\"attachment wp-att-2967\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/41j.com\/blog\/wp-content\/uploads\/2015\/10\/photo5.jpg\" alt=\"photo(5)\" width=\"1632\" height=\"1224\" class=\"aligncenter size-full wp-image-2967\" \/><\/a><\/p>\n<p>Tracing out the header:<br \/>\n1: 3.2v<br \/>\n2:<br \/>\n3: 3.2V<br \/>\n4:<br \/>\n5: 0V<br \/>\n6:<br \/>\n7: +20 TO -20 300NS FIRST NEG THEN GND THEN POS. BASELINE IN +20v<br \/>\n8:<br \/>\n9: as 7<br \/>\n10: as 7<br \/>\n11: as 7<br \/>\n12: 7<br \/>\n13: as 7<br \/>\n14: as 7<br \/>\n15: as 7<br \/>\n16: 7<br \/>\n17: as 7<br \/>\n18: 7<br \/>\n19: as 7<br \/>\n20:7<br \/>\n21: as 7<br \/>\n22:7<br \/>\n23: 0<br \/>\n24: 0<br \/>\n25: 0<br \/>\n26: 3<br \/>\n27: 2.3v<br \/>\n29: 0<br \/>\n30: 0<\/p>\n<p>31: 0<br \/>\n32: 0<br \/>\n33: 0<br \/>\n34: 0<br \/>\n35: 800mv<br \/>\n36:<br \/>\n37: 1.2<br \/>\n38: 1.2<br \/>\n39: 800<br \/>\n40: 800<br \/>\n41: 1,2<br \/>\n42: 1.2<br \/>\n43: 0<br \/>\n44: 0<br \/>\n45: 800<br \/>\n46:1<br \/>\n47: 1.2<br \/>\n48: 1<br \/>\n49: 800<br \/>\n50: 800<br \/>\n51: 800<br \/>\n52:<br \/>\n53: 1.2<br \/>\n54: 0<br \/>\n55: 800<br \/>\n56: 800<br \/>\n57: 1.2<br \/>\n58: 0<br \/>\n59: 800<br \/>\n60: 1.3<br \/>\n61: 1.2<br \/>\n62: 800<br \/>\n63: 0<br \/>\n64: 1.3<br \/>\n65: 1.2<br \/>\n66:0<br \/>\n67: 800<br \/>\n68:1<br \/>\n69: 1.2<br \/>\n70:1<br \/>\n71: 800<br \/>\n72:1<br \/>\n73: 1.2<br \/>\n74:800<br \/>\n75: 800<br \/>\n76:1.3<br \/>\n77: 1.2<br \/>\n78: 1.3<\/p>\n<p><a href=\"http:\/\/41j.com\/blog\/2015\/10\/nec-np215-dlp-projector-teardown\/lcry0602p12674_20151002_074656\/\" rel=\"attachment wp-att-2961\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/41j.com\/blog\/wp-content\/uploads\/2015\/10\/LCRY0602P12674_20151002_074656.png\" alt=\"LCRY0602P12674_20151002_074656\" width=\"800\" height=\"547\" class=\"aligncenter size-full wp-image-2961\" \/><\/a><\/p>\n<p><a href=\"http:\/\/41j.com\/blog\/2015\/10\/nec-np215-dlp-projector-teardown\/lcry0602p12674_20151002_074622\/\" rel=\"attachment wp-att-2962\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/41j.com\/blog\/wp-content\/uploads\/2015\/10\/LCRY0602P12674_20151002_074622.png\" alt=\"LCRY0602P12674_20151002_074622\" width=\"800\" height=\"547\" class=\"aligncenter size-full wp-image-2962\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>I&#8217;ve been playing with an old, faulty NEC Projector. It uses a DDP2230 DLP controller, for which no datasheet is available. It took a bit of fiddling to get everything working out of the case and the mercury lamp burnt a nice mark in my desk&#8230; I did manage to get some video of the [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[1],"tags":[],"class_list":["post-2941","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p1RRoU-Lr","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/posts\/2941","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/comments?post=2941"}],"version-history":[{"count":14,"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/posts\/2941\/revisions"}],"predecessor-version":[{"id":2968,"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/posts\/2941\/revisions\/2968"}],"wp:attachment":[{"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/media?parent=2941"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/categories?post=2941"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/tags?post=2941"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}