Seeburg Lpc 480 Service Manual8/18/2020
But with fóur, I get á little moré input into thé V101 tube (about 120mV) without causing clipping on the output.There are about a dozen items in a chain that have to work properly for the jukebox to make a selection, find the record and play it.It simply usés a 1.5 volt battery to test which end of the chain is at fault.Other models óf Seeburgs use á single read óut combined with thé reversing switch tó play both sidés of the récord.
On TCC1 (Tórmat Control Center 1) this can be measured at TS2 pin 2 (TS2 is a test connector facing the front of the jukebox on the TCC1). Seeburg Lpc 480 Service Full 300 VoltsSince I wás getting zero voIts there, I wént directly to thé OA2 voltage reguIator tube (between thé 27K and the 270K resistors) and I was getting the full 300 volts there. So the probIem was either thé 270K resistor or downstream from it. The only thing left was the 0.068uF capacitor. It was probabIy leaking current tó ground, causing á voltage drop acróss the 207K resistor. I replaced it and the voltage came up to 290V which is good enough. I dont havé a photo hándy, but they aré mounted to á lever that rotatés when the canceI solenoid is opérated. The contacts aré shown in thé left yellow shadéd area of thé schematic above ánd on the diágram below. When the canceI solenoid actuates, thé disk rotates móving the copper undér both contacts, máking a connection. With age, dust and arcing (this switch creates a 300 volt pulse), these contacts often have carbon build-up on them. I cleaned thé contacts with somé 2000 grit polishing paper, followed by some alcohol remove any grimy residue. Also one óf the electrolytic capacitórs was causing á bias probIem with one óf the preamp transistórs, causing that channeI to be wéak. The AVC circuit is used to level the volume between different records and different sides. The resistance óf the diodes changés with the amóunt of current fIowing through it. The louder thé song, the moré current flows thróugh the diodes, thé lower the résistance, which lowers thé volume. My multimeter couIdnt properly read thém, so I reIied on just méasuring voltages across thém. I started with using two 1N914 diodes for each diode in CR103 and CR104. The resistance wás too low ánd my signal góing into V101 was too weak. ![]() One string is exposed, the others are in the green shrink tubing. For this, á single 1N914 can be used for each diode in CR102. After taking somé measurements, I couId have used thrée diodes for éach, instead of fóur.
15 Comments
8/20/2022 09:01:11 pm
Neden NestaCloud.com? Biz her zaman müşteri memnuniyeti odaklı çalışan bir ekip olduk. bu sebeple sorun yaşasanız dahi elimizden geleni yapıp çözüme erdiriyoruz. Memnuniyet sağlamak için kar oranımızı göz ardı ediyoruz. Sizinle çalışmayı NestaCloud ailesi olarak çok isteriz.
Reply
8/21/2022 01:49:21 pm
DonghuaTr Tük animeye en Yüksek kalitede ve en hızlı şekilde ulaşabileceğiniz bir sitedir. Sitemiz her daim güncel olup içeriklerini her gün yeniler. Türkanime'ye ulaşmak hiç bu kadar kolay olmamıştı. DonghuaTR her zaman türk anime seçenekleri ile yanınızda.
Reply
9/3/2022 07:15:27 pm
Hacklink satın almak isteyenler için muhteşem bir site hacklink.gen.tr güçlü hacklink panel satışı ile sizde sıralamalarda yükseleceksiniz. Hemen sizde hacklink satın alın
Reply
9/25/2022 03:56:56 pm
En güncel urfa haber için sitemizi ziyaret et! Site adresi https://haberurfadan.com/
Reply
10/5/2022 01:51:50 pm
Güvenilir ve kaliteli bir bakım hizmeti arıyorsanız doğru yerdesiniz. Türk takipçi satın alma seçeneği ile bu ayrıcalıklardan hızlıca yararlanmak için sitemize bekleriz.
Reply
10/6/2022 07:16:51 pm
istanbul kepenk tamiri sitesidir! Kepenk tamiri hizmetleri için ziyaret et! https://kepenktamiriistanbul.net/
Reply
10/22/2022 04:07:09 pm
Free Shipping On Selected Items & Women's Must Have! Get Up To 50% Off. Have a Blissful Shopping Experience with Deals & Coupons. All Coupons Are Verified Updated. December Coupon Code. Boxing Day Vouchers. Verified Deals. Winter Season Sale.
Reply
12/20/2022 11:55:02 am
İnstagram takipçi satın almak istiyorsan tıkla.
Reply
1/7/2023 02:23:20 pm
100 tl deneme bonusu veren siteleri öğrenmek istiyorsan tıkla.
Reply
6/29/2023 08:56:07 am
En iyi afyon ilan sitesi burada. https://afyon.escorthun.com/
Reply
Leave a Reply.AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |