Ubwenge 9 busanzweUruganda rwa PCBUbugenzuzi bw'umuzunguruko bwatangijwe ku buryo bukurikira:
1. Birabujijwe cyane gukoresha ibikoresho byikizamini bifatika kugirango ukore kuri TV ya Live, amashusho, videwo nibindi bikoresho byo hepfo kugirango ugerageze ubuyobozi bwa PCB nta murongo wigunga.
Birabujijwe rwose gupima TV, amajwi, videwo nibindi bikoresho nta kwigunga kwamashanyarazi hamwe nibikoresho hamwe nibikoresho bifite ishingiro. Nubwo radiyo rusange ya Cassette yahinduye imbaraga, iyo uhuye nibikoresho byihariye bya TV cyangwa amajwi, cyane cyane imbaraga zamashini zakoreshejwe, ugomba kubanza kumenya nisahani yumuriro wamashanyarazi, bigira ingaruka kumuzenguruko wahujwe, utera kurushaho kwagura amakosa.
2. Witondere imikorere yo kwishyurwa
Ntabwo byemewe gukoresha icyuma cyo kugurisha kugirango ugurishe imbaraga. Menya neza ko icyumagurisha kitishyurwa. Ubutaka igikonoshwa cyicyuma. Witondere umuzunguruko. Nibyiza gukoresha eltage yo hasi-voltage cyuma cya 6 ~ 8V.
3. Mbere yo kwipimisha ikibaho cya PCB, sobanukirwa ihame ryakazi ryakamyo hamwe n'imirongo ijyanye nayo
Mbere yo kugenzura no gusana umuzenguruko uhujwe, ugomba kubanza kumenyera imikorere yumuzunguruko winjijwe mumbere, uruhare rwa buri PIN, hamwe na voltage isanzwe ya pin, hamwe nihame risanzwe rya pin, kandi ihame risanzwe ryimizunguruko zigizwe nibice bya peripheque. Niba ibisabwa haruguru byujujwe, gusesengura no kugenzura bizaba byoroshye cyane.
4. Ntuteze umuzunguruko mugufi hagati yipimisha mugihe ugerageza ikibaho cya PCB
Iyo upima voltage cyangwa ugerageza kwipimisha hamwe na oscicloscope, ntutere umuzunguruko mugufi hagati yimpande zumuzunguruko uhuriweho cyangwa kubikorwa, hanyuma upime kumurongo wa peripheri ufitanye isano itaziguye mu mapine. Inzoka iyo ari yo yose y'uruhindi irashobora kwangiza mu buryo bworoshye; Ugomba kwitonda mugihe ugerageza gushushanya-paki cmos ihuriweho.
5. Kurwanya imbere mu kizamini cya PCB kigomba kuba kinini
Mugihe upima voltage ya DC pin, umuyoboro hamwe niterambere ryimbere ryumutwe urenze 20kω / V hagomba gukoreshwa ikosa rinini ryo gupima pin.
6. Witondere guhiga ubushyuhe bwumuzunguruko uhujwe nimbaraga mugihe ugerageza ikibaho cya PCB
Umuzunguruko uhujwe n'imbaraga zigomba kuba ufite amashuri meza yubushyuhe, kandi ntibyemewe gukora muburyo busumbabunze budafite ubushyuhe.
7. Inzonga ya Kines ya PCB igomba kugeragezwa
Niba ukeneye kongeramo ibice byo hanze kugirango usimbuze ibice byangiritse byumuzunguruko uhujwe, kandi insinga igomba kuba ingirakamaro kwirinda guhuza bitari ngombwa, cyane cyane kuruhande rwimbaraga zamajwi Amplifier hamwe na Priamplifier Iherezo ryumuzunguruko.
8. Kugenzura ikibaho cya PCB kugirango irekurwe neza
Iyo ugurishwa, umugurisha arakomeye, kandi kwirundanya k'umugurisha na pores birashoboka ko bitera abagurisha ibinyoma. Igihe cyo kugurisha muri rusange kitari amasegonda 3, kandi imbaraga zumugurisha zigurishwa zigomba kuba hafi 25w hamwe no gushyushya imbere. Umuzenguruko uhujwe wagurishijwe ugomba kugenzurwa neza. Koresha ohmmeter kugirango upime niba hari umuzunguruko mugufi hagati yipimisha, wemeze ko nta adherion adsion, hanyuma akangure imbaraga.
9. Ntugacire urubanza ibyangiritse byumuzunguruko byoroshye mugihe ugeragezaPCB
Ntugacire urubanza ko umuzenguruko uhujwe nawo wangiritse byoroshye. Kuberako imirongo ihuriweho cyane ihujwe nayo, iyo umuzunguruko udasanzwe, birashobora gutuma impinduka nyinshi za voltage, kandi izi mpinduka ntabwo byanze bikunze ziterwa no kwangirika kwumuzungura. Byongeye kandi, mubihe bimwe, voltage yapimwe ya buri pin itandukanye na voltage isanzwe. Iyo indangagaciro zihuye cyangwa ziri hafi, ntishobora guhora yerekana ko umuzenguruko wuzuye ari mwiza. Kuberako amakosa amwe yoroheje ntabwo azatera impinduka muri dc voltage.
Murugo -About hengxinyi -ibice