Momwe Mungakulitsire Mapangidwe a PCB?

1. Onani kuti ndi zida ziti zomwe zingakonzedwe pa bolodi.Zida zomwe zili pa bolodi sizinthu zonse zomwe zimapangidwira mkati mwa dongosolo.Mwachitsanzo, zida zofananira nthawi zambiri siziloledwa kutero.Pazida zosinthika, kuthekera kwa serial kwa ISP ndikofunikira kuti pakhale kusinthika kwamapangidwe.

2. Yang'anani ndondomeko ya mapulogalamu pa chipangizo chilichonse kuti mudziwe mapini omwe akufunikira.Izi zitha kupezeka kwa wopanga zida kapena kukopera pa intaneti.Kuphatikiza apo, akatswiri opanga ntchito zam'munda amatha kupereka chithandizo chazida ndi kapangidwe kake ndipo ndi chida chabwino.

3. Lumikizani zikhomo zamapulogalamu kuti mugwiritse ntchito zikhomo pa bolodi lowongolera.Tsimikizirani kuti mapini okonzekera alumikizidwa ndi zolumikizira kapena zoyeserera pa bolodi pamapangidwe awa.Izi ndizofunikira kwa oyesa ma in-circuit testers (ICT) kapena ISP omwe amagwiritsidwa ntchito popanga.

4. Pewani mikangano.Onetsetsani kuti ma sign omwe amafunidwa ndi ISP sakulumikizidwa ndi zida zina zomwe zingasemphane ndi wopanga mapulogalamu.Yang'anani katundu wa mzere.Pali mapurosesa omwe amatha kuyendetsa ma diode otulutsa kuwala (ma LED) mwachindunji, komabe, opanga mapulogalamu ambiri sangathe kuchita izi.Ngati zolowetsa / zotuluka zikugawidwa, izi zitha kukhala zovuta.Chonde samalani ndi chowunikira nthawi kapena sinthaninso jenereta ya sigino.Ngati chizindikiro chachisawawa chatumizidwa ndi chowunikira chowunikira kapena kukonzanso jenereta ya siginecha, ndiye kuti chipangizocho chikhoza kukonzedwa molakwika.

5. Dziwani momwe chipangizo chopangidwira chimapangidwira panthawi yopanga.Dongosolo loyang'anira liyenera kukhazikitsidwa kuti likhazikitsidwe mu dongosolo.Tiyeneranso kudziwa zinthu zotsatirazi.

(1) Kodi pamafunika mphamvu yanji?M'mawonekedwe a mapulogalamu, zida nthawi zambiri zimafunikira ma voltage osiyanasiyana kuposa momwe amagwirira ntchito wamba.Ngati magetsi ali apamwamba panthawi ya mapulogalamu, ndiye kuti ziyenera kutsimikiziridwa kuti magetsi apamwambawa sangawononge zinthu zina.

(2) Zida zina ziyenera kutsimikiziridwa pamtunda wapamwamba ndi wotsika kuti zitsimikizire kuti chipangizocho chakonzedwa bwino.Ngati ndi choncho, ndiye kuti mtundu wamagetsi uyenera kufotokozedwa.Ngati jenereta yokonzanso ilipo, yang'anani jenereta yobwezeretsa poyamba, chifukwa ingayese kubwezeretsa chipangizo pamene mukuchita cheke chochepa.

(3) Ngati chipangizochi chikufuna magetsi a VPP, perekani voliyumu ya VPP pa bolodi kapena mugwiritse ntchito magetsi osiyana kuti muwapangitse panthawi yopanga.Purosesa yomwe ikufuna voteji ya VPP idzagawana magetsi awa ndi mizere ya digito / zotulutsa.Onetsetsani kuti mabwalo ena olumikizidwa ndi VPP atha kugwira ntchito pamagetsi apamwamba.

(4) Kodi ndikufunika chowunikira kuti ndiwone ngati magetsi ali mkati mwazomwe zidapangidwa?Chonde onetsetsani kuti chipangizo chotetezera ndichothandiza kuti magetsi awa azikhala mkati mwachitetezo.

(6) Onani mtundu wa zida zomwe mungagwiritse ntchito popanga mapulogalamu, komanso kupanga.Panthawi yoyesera, ngati bolodi imayikidwa pamayesero a pulogalamu, ndiye kuti zikhomo zimatha kulumikizidwa kudzera pa bedi la pini.Njira ina ndi yakuti ngati mukufunikira kugwiritsa ntchito rack tester, ndikuyendetsa pulogalamu yapadera yoyesera, ndi bwino kugwiritsa ntchito cholumikizira kumbali ya bolodi kuti mugwirizane, kapena kugwiritsa ntchito chingwe kuti mugwirizane.

7. Bwerani ndi njira zotsatirira zidziwitso.Chizoloŵezi chowonjezera deta yokhazikika kumbuyo kwa mzere chikukhala chofala kwambiri.Pachipangizo chokonzekera kugwiritsa ntchito nthawi moyenera, chikhoza kupangidwa kukhala chipangizo "chanzeru".Kuphatikizira zambiri zokhudzana ndi malonda ku chinthucho, monga nambala ya serial, adilesi ya MAC, kapena data yopanga, kumapangitsa kuti chinthucho chikhale chothandiza kwambiri, chosavuta kukonza ndikuchikweza, kapena kuti chikhale chosavuta popereka chitsimikizo, komanso chimalola wopanga kusonkhanitsa zidziwitso zothandiza. moyo wothandiza wa mankhwala.Zogulitsa zambiri "zanzeru" zili ndi kuthekera kotsata uku powonjezera EEPROM yosavuta komanso yotsika mtengo yomwe imatha kukonzedwa ndi data kuchokera pamzere wopanga kapena kumunda.

Dera lopangidwa bwino lomwe liri loyenera kugulitsa komaliza lingathenso kulepheretsa kukhazikitsidwa kwa ISP panthawi yopanga.Chifukwa chake, bolodi liyenera kusinthidwa kuti likhale loyenera kwa ISP pamzere wopanga ndikumaliza ndi bolodi yabwino.

zonse zokha1


Nthawi yotumiza: Apr-01-2022

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