Ua ntej.
Cov txheej txheem rov ua haujlwm tsis tu ncua tsis tu ncua los ntawm ntau lub chaw tsim khoom, tab sis qhov tseeb qhov tsis txaus ntseeg ua rau rov ua haujlwm tseem ceeb hauv cov txheej txheem sib dhos.Yog li ntawd, cov txheej txheem tsis huv rework yog ib feem tseem ceeb ntawm cov txheej txheem tsis huv los ua ke.Kab lus no piav qhia txog kev xaiv cov ntaub ntawv xav tau rau cov txheej txheem tsis huv, kev sim thiab txheej txheem txheej txheem.
I. Tsis-huv rework thiab siv CFC ntxuav ntawm qhov sib txawv
Txawm hais tias hom kev ua haujlwm zoo li cas nws lub hom phiaj yog tib yam —— nyob rau hauv cov ntawv luam tawm sib dhos ntawm kev tshem tawm tsis muaj kev puas tsuaj thiab muab tso rau ntawm cov khoom, tsis muaj kev cuam tshuam rau kev ua haujlwm thiab kev ntseeg siab ntawm cov khoom.Tab sis cov txheej txheem tshwj xeeb ntawm kev tsis huv rework siv CFC tu rework sib txawv ntawm qhov sib txawv.
1. nyob rau hauv kev siv CFC tu rework, reworked Cheebtsam kom dhau ib tug tu txheej txheem, cov txheej txheem ntxuav feem ntau yog tib yam li cov txheej txheem ntxuav siv los ntxuav cov luam tawm Circuit Court tom qab sib dhos.Kev ntxuav-dawb rework tsis yog qhov kev ntxuav no.
2. nyob rau hauv kev siv CFC tu rework, kev ua hauj lwm kom ua tau zoo solder pob qij txha nyob rau hauv lub reworked Cheebtsam thiab luam Circuit Court board cheeb tsam yog siv solder flux kom tshem tawm oxide los yog lwm yam paug, thaum tsis muaj lwm yam txheej txheem los tiv thaiv kev kis kab mob los ntawm qhov chaw xws li ntiv tes roj los yog ntsev, thiab lwm yam.. Txawm hais tias ntau dhau ntawm cov solder thiab lwm yam kab mob muaj nyob rau hauv cov ntawv luam tawm los ua ke, cov txheej txheem ntxuav zaum kawg yuav tshem tawm.Tsis-huv rework, ntawm qhov tod tes, tso txhua yam nyob rau hauv lub rooj sib txoos luam tawm, ua rau muaj ntau yam teeb meem xws li kev cia siab rau lub sij hawm ntev ntawm cov pob qij txha, rework compatibility, kev sib kis thiab cov khoom kom zoo nkauj.
Raws li kev ua haujlwm tsis huv tsis yog tus yam ntxwv los ntawm cov txheej txheem tu, kev ntseeg siab ntev ntawm cov pob qij txha tuaj yeem lav tau los ntawm kev xaiv cov khoom siv rov ua haujlwm zoo thiab siv cov txheej txheem soldering txoj cai.Nyob rau hauv tsis muaj-huv rework, solder flux yuav tsum tau tshiab thiab nyob rau tib lub sij hawm txaus active kom tshem tawm oxides thiab ua tau zoo wettability;cov seem ntawm cov ntawv luam tawm los ua ke yuav tsum yog nruab nrab thiab tsis cuam tshuam rau kev ntseeg tau ntev;Nyob rau hauv tas li ntawd, cov seem nyob rau hauv lub luam Circuit Court sib dhos yuav tsum tau sib xws nrog cov ntaub ntawv rework thiab cov residue tshiab tsim los ntawm kev sib txuas nrog ib leeg yuav tsum yog nruab nrab.Feem ntau cov xau ntawm cov conductors, oxidation, electromigration thiab dendrite kev loj hlob yog tshwm sim los ntawm cov khoom tsis sib xws thiab kev sib kis.
Qhov zoo ntawm cov khoom zoo li niaj hnub no kuj yog ib qho teeb meem tseem ceeb, raws li cov neeg siv tau nyiam nyiam huv thiab ci ntsa iab luam tawm Circuit Court sib dhos, thiab qhov pom ntawm txhua yam pom qhov seem ntawm lub rooj tsavxwm yog suav tias yog kev sib kis thiab tsis lees paub.Txawm li cas los xij, cov khoom seem pom muaj nyob rau hauv cov txheej txheem tsis huv rework thiab tsis pom zoo, txawm tias tag nrho cov seem ntawm cov txheej txheem rov ua haujlwm yog qhov nruab nrab thiab tsis cuam tshuam rau kev ntseeg siab ntawm kev sib sau ua ke.
Txhawm rau daws cov teeb meem no muaj ob txoj hauv kev: ib qho yog xaiv cov khoom siv rov ua haujlwm zoo, nws tsis muaj kev ua haujlwm huv tom qab qhov zoo ntawm cov pob qij txha tom qab ntxuav nrog CFC zoo li qhov zoo;Qhov thib ob yog txhawm rau txhim kho cov txheej txheem kev ua haujlwm tam sim no thiab cov txheej txheem kom ua tiav qhov tsis muaj kev huv huv.
II.Rework xaiv cov ntaub ntawv thiab compatibility
Vim muaj kev sib raug zoo ntawm cov ntaub ntawv, tsis muaj kev sib dhos huv thiab cov txheej txheem rov ua haujlwm yog kev sib txuas thiab sib cuam tshuam.Yog tias cov ntaub ntawv tsis raug xaiv raug qhov no yuav ua rau muaj kev cuam tshuam uas yuav txo tau lub neej ntawm cov khoom.Kev ntsuam xyuas kev sib raug zoo feem ntau yog ib qho kev ntxhov siab, kim thiab siv sijhawm ntev.Qhov no yog vim muaj coob tus ntawm cov ntaub ntawv koom nrog, kim cov kuab tshuaj thiab cov kev sim mus ntev thiab lwm yam. Cov ntaub ntawv feem ntau koom nrog cov txheej txheem sib dhos yog siv rau hauv cov cheeb tsam loj, suav nrog cov tshuaj txhuam hniav, yoj solder, cov nplaum thiab cov txheej txheem sib dhos.Cov txheej txheem rework, ntawm qhov tod tes, xav tau cov ntaub ntawv ntxiv xws li rework solder thiab solder hlau.Tag nrho cov ntaub ntawv no yuav tsum tau sib xws nrog cov ntxhua khaub ncaws los yog lwm hom tshuaj ntxuav siv tom qab luam ntawv Circuit Court board masking thiab solder paste misprinting.
Post lub sij hawm: Oct-21-2022