PCB tsim thiab txheej txheem ntau lawm muaj li 20 txheej txheem,pluag tinnyob rau hauv Circuit Court board tej zaum yuav ua rau xws li kab sandhole, hlau vau, kab dev hniav, qhib Circuit Court, kab xuab zeb qhov kab;Pore tooj liab nyias qhov hnyav tsis muaj tooj liab;Yog tias lub qhov tooj liab nyias yog qhov hnyav, lub qhov tooj liab tsis muaj tooj liab;Detin tsis huv (lub sij hawm xa rov qab tin yuav cuam tshuam rau cov txheej txheej detin tsis huv) thiab lwm yam teeb meem zoo, yog li kev sib ntsib ntawm cov tin tsis zoo feem ntau txhais tau hais tias yuav tsum rov ua dua lossis txawm tias nkim ua haujlwm dhau los, yuav tsum tau rov ua dua.Yog li ntawd, hauv kev lag luam PCB, nws yog ib qho tseem ceeb heev kom nkag siab txog qhov ua rau cov tin tsis zoo
Cov tsos ntawm cov tin tsis zoo yog feem ntau cuam tshuam nrog kev huv ntawm PCB khoob board nto.Yog tias tsis muaj kuab paug, yuav tsis muaj qhov tsis zoo.Qhov thib ob, lub solder nws tus kheej tsis zoo, kub thiab lwm yam.Tom qab ntawd cov ntawv luam tawm Circuit Board feem ntau yog tshwm sim hauv cov ntsiab lus hauv qab no:
1. Muaj particle impurities nyob rau hauv lub phaj txheej, los yog muaj kev sib tsoo hais sab laug nyob rau saum npoo ntawm kab thaum lub sij hawm tsim cov txheej txheem ntawm lub substrate.
2. Board nrog roj, impurities thiab lwm yam sundries, los yog muaj ib tug silicone roj residue
3. Lub phaj nto muaj ib daim ntawv hluav taws xob ntawm lub tin, lub phaj txheej txheej muaj particle impurities.
4. Muaj peev xwm txheej yog ntxhib, muaj phaj hlawv tshwm sim, phaj saum npoo ntawv tsis tuaj yeem nyob rau ntawm tin ..
5. Lub tin nto oxidation thiab tooj liab nto dullness ntawm substrate los yog qhov chaw yog loj.
6. Ib sab ntawm cov txheej txheem tiav, lwm sab ntawm txheej yog qhov phem, qhov tsis tshua muaj peev xwm ntawm sab muaj qhov pom tseeb ci ntsa iab tshwm sim.
7. Cov qhov tsis tshua muaj peev xwm muaj qhov pom tseeb ntawm ntug qhov tshwm sim, muaj peev xwm txheej txheej ntxhib, muaj qhov tshwm sim ntawm cov phaj kub.
8. Cov txheej txheem vuam tsis ua kom muaj qhov kub thiab txias txaus, lossis siv cov flux kom raug
9. Qhov tsis tshua muaj peev xwm loj hauv cheeb tsam tsis tuaj yeem tinned, board nto muaj me ntsis tsaus liab los yog liab, ib sab ntawm cov txheej tiav, ib sab ntawm cov txheej yog phem