Kunzwisisa uye nzira dzekuongorora kwePCB: tarisa, teerera, kunhuwidza, kubata…

1. Zvinorambidzwa zvachose kushandisa midziyo yekuedza yakadzika kubata TV mhenyu, odhiyo, vhidhiyo uye zvimwe midziyo yepasi ndiro kuyedza PCB board pasina yekuzviparadzanisa transformer.

Izvo zvinorambidzwa zvachose kuedza zvakananga TV, odhiyo, vhidhiyo uye zvimwe zvishandiso zvisina simba rekuzviparadzanisa neshanduro ine zviridzwa uye zvishandiso zvine magomba akaiswa pasi.Kunyangwe iyo general redhiyo nekaseti rekodhi ine simba rekushandura, kana iwe ukasangana neakanyanya kukosha TV kana maodhiyo emidziyo, kunyanya simba rekubuda kana chimiro chemagetsi anoshandiswa, unofanira kutanga waona kana chassis yemuchina iri. yakachajiswa, kana zvisina kudaro zviri nyore kwazvo The TV, odhiyo uye zvimwe midziyo inopomerwa neplate yepasi inokonzera kupfupika kwedunhu remagetsi, izvo zvinokanganisa dunhu rakabatanidzwa, zvichikonzera kuwedzera kwechikanganiso.

2. Chenjerera kukushanda kwekudzivirira kwesimbi yesimbi paunenge uchiedza bhodhi rePCB

Hazvibvumirwi kushandisa simbi yakanyungudutswa kuti ishandiswe nesimba.Iva nechokwadi chokuti iron soldering haina kubhadharwa.Zviri nani kudzikisa goko resimbi yekusimbisa.Ngwarira zvakanyanya neMOS wedunhu.Izvo zvakachengeteka kushandisa yakaderera voltage soldering iron ye6 ~ 8V.

3. Ziva misimboti yekushanda yemasekete akabatanidzwa uye masekete ane hukama usati waedza mabhodhi ePCB

Usati waongorora nekugadzirisa dunhu rakasanganiswa, unofanirwa kutanga waziva basa redunhu rakasanganiswa rinoshandiswa, dunhu remukati, maparamita makuru emagetsi, basa repini yega yega, uye yakajairika voltage yepini, waveform uye kushanda. musimboti wedunhu rinoumbwa nezvikamu zveperipheral.Kana mamiriro ari pamusoro apa akasangana, kuongorora uye kuongorora kuchava nyore nyore.

4. Usakonzerese mapfupi maseketi pakati pepini paunenge uchiyedza PCB

Pakuyera voltage kana kuyedza waveform ine oscilloscope probe, usakonzere kupfupika kwedunhu pakati pemapini edunhu rakasanganiswa nekuda kwekutsvedza kweiyo bvunzo inotungamira kana probes.Zvakanakisisa kuyera pane peripheral yakadhindwa dunhu rakabatana zvakananga nemapini.Chero nguva pfupi yedunhu inogona kukuvadza zviri nyore dunhu rakabatanidzwa, saka chenjera paunenge uchiyedza flat-pakeji CMOS yakabatanidzwa sedunhu.

5. Kupikisa kwemukati kwePCB board test instrument inofanira kuva yakakura

Pakuyera DC voltage yeI IC pini, multimeter ine mukati mekudzivirira kwemamita musoro mukuru kudarika 20KΩ/V inofanira kushandiswa, kana zvisina kudaro pachava nekukanganisa kukuru kwekuyera kwemhepo yemamwe mapini.

6. Nyatsocherechedza kupisa kwekupisa kwemasimba akabatanidzwa emagetsi paunenge uchiedza mabhodhi ePCB

Simba rakasanganiswa redunhu rinofanira kubvisa kupisa zvakanaka, uye haribvumirwi kushanda pasi pesimba guru pasina kupisa.

7. Iyo inotungamira waya yePCB board inofanirwa kuve inonzwisisika

Kana iwe uchida kuwedzera ekunze zvikamu kutsiva chikamu chakakanganisika chedunhu rakabatanidzwa, zvidiki zvidiki zvinofanirwa kushandiswa, uye wiring inofanira kuve inonzwisisika kudzivirira zvisingaite parasitic coupling, kunyanya kudzika pakati peiyo redhiyo simba amplifier integrated circuit uye preamplifier dunhu kupera. .

8. Tarisa bhodhi rePCB kuti uone kunaka kwewelding

Paunenge uchitengesa, solder yakasimba, uye kuunganidza solder uye pores zvinogona kukonzera kutengesa kwenhema nyore nyore.Nguva yekunyungudutsa kazhinji haipfuure masekonzi matatu, uye simba resimbi yekunyungudutsa rinofanira kunge riri 25W nekudziya kwemukati.Dunhu rakabatanidzwa rakatengeswa rinofanira kuongororwa zvakanyatsonaka.Zvakanakisisa kushandisa ohmmeter kuyera kana pane pfupi pfupi pakati pepini, simbisa kuti hapana solder adhesion, uye wozoshandura simba.
9. Usaona zviri nyore kukanganisa kwedunhu rakabatanidzwa paunenge uchiedza bhodhi rePCB

Usatonga kuti dunhu rakabatanidzwa rinokuvadzwa nyore nyore.Nekuti akawanda maseketi akabatanidzwa akabatana zvakananga, kana dunhu ringove risina kujairika, rinogona kukonzera shanduko yemagetsi akawanda, uye shanduko idzi hadzina kukonzerwa nekukuvadzwa kwedunhu rakabatanidzwa.Uye zvakare, mune zvimwe zviitiko, iyo yakayerwa voltage yepini yega yega yakasiyana neyeyakajairwa Kana iyo yakakosha ichienderana kana iri padhuze, zvingasagara zvichireva kuti dunhu rakasanganiswa rakanaka.Nekuti zvimwe zvinyoro zvinyoro hazvikonzere shanduko muDC voltage.

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PCB bhodhi debugging nzira

Nokuti itsva PCB bhodhi kuti ichangobva kutorwa shure, tinofanira kutanga zvakangoita kucherechedza kana pane matambudziko pabhodhi, akadai kana pane pachena makatsemuka, mapfupi matunhu, akazaruka matunhu, etc. Kana zvakakodzera, tarisa kana kuramba pakati magetsi uye pasi yakakura zvakakwana.

Kune ichangobva kugadzirwa redunhu bhodhi, debugging inowanzosangana nemamwe matambudziko, kunyanya kana bhodhi iri rakakura uye paine zvakawanda zvinoriumba, kazhinji hazvigoneke kutanga.Asi kana iwe ukagona seti yeane musoro nzira dzekugadzirisa, debugging inowana zvakapetwa kaviri mhedzisiro nehafu yekuedza.

PCB bhodhi debugging matanho:

1. Kune itsva PCB bhodhi ichangobva kudzoserwa shure, tinofanira kutanga zvakangoita kucherechedza kana pane chero matambudziko pabhodhi, akadai kana pane pachena makatsemuka, mapfupi matunhu, akazaruka matunhu, etc. Kana zvakakodzera, unogona kutarisa kana kushorwa pakati pesimba rekupa uye pasi yakakura zvakakwana.

2. Zvadaro zvikamu zvinoiswa.Independent modules, kana iwe usina chokwadi chekuti inoshanda nemazvo, zviri nani kusaisa ese, asi isa chikamu nechikamu (kune madiki maseketi, unogona kuaisa ese kamwechete), kuitira kuti zvive nyore kuona. kukanganisa kwakasiyana.Paunosangana nematambudziko, haugone kutanga.

Kazhinji kutaura, unogona kuisa magetsi ekutanga, wozovheneka kuti utarise kuti magetsi ekubuda kwemagetsi akajairika.Kana iwe usina chivimbo chakawanda paunenge uchisimudza (kunyangwe uine chokwadi, zvinokurudzirwa kuti uwedzere fuse, kana zvikaitika), funga kushandisa inogadziriswa inodzorwa magetsi emagetsi ane ikozvino inomisa basa.

Gadzirisa iyo overcurrent yekudzivirira ikozvino kutanga, wobva wawedzera zvishoma nezvishoma kukosha kwevoltage yeyakagadziriswa magetsi, uye tarisa iyo yekupinda ikozvino, yekuisa voltage uye inobuda voltage.Kana pasina kuchengetedzwa kwepamusoro uye mamwe matambudziko panguva yekugadziriswa kwepamusoro, uye kubuda kwemagetsi kwasvika zvakajairika, magetsi emagetsi ari OK.Zvikasadaro, bvisa magetsi, tsvaga pari kutadza, uye dzokorora nhanho dziri pamusoro kusvika magetsi ajaira.

3. Zvadaro, isa mamwe ma modules zvishoma nezvishoma.Pese painoiswa module, batidza uye uiedze.Paunenge uchibatidza, tevera matanho ari pamusoro apa kuti udzivise pamusoro-ikozvino zvichikonzerwa nekukanganisa kwekugadzira uye/kana kukanganisa kwekuisa uye kupisa zvinhu.