Ibhodi le-PCB eliphelele lidinga ukudlula ezinqubweni eziningi ukusuka kumklamo kuye kumkhiqizo ophelile. Uma zonke izinqubo sezimi ngomumo, izogcina ingene kusixhumanisi sokuhlola. Amabhodi e-PCB ahloliwe kuphela azosetshenziswa kumkhiqizo, ngakho-ke uwenza kanjani umsebenzi wokuhlola ibhodi lesifunda le-PCB , Lesi isihloko wonke umuntu akhathazeke ngaso kakhulu. Umhleli olandelayo we-Jinhong Circuit uzokutshela mayelana nolwazi olufanele lokuhlolwa kwebhodi lesifunda!

1. Lapho ukala i-voltage noma uhlola i-waveform nge-oscilloscope probe, ungabangeli ukujikeleza okufushane phakathi kwamaphini wesekethe ehlanganisiwe ngenxa yokuslayida komthofu wokuhlola noma i-probe, futhi ulinganise kumjikelezo ophrintiwe we-peripheral oxhunywe ngqo kuphinikhodi. Noma iyiphi isekethe yesikhashana ingalimaza kalula isekethe edidiyelwe. Kufanele uqaphele kakhulu lapho uhlola amasekhethi ahlanganisiwe e-CMOS anephakheji eliyisicaba.

2. Akuvunyelwe ukusebenzisa i-solder iron for soldering ngamandla. Qinisekisa ukuthi i-soldering iron ayikhokhiswa. Gcoba igobolondo le-soldering iron. Qaphela ngesekhethi ye-MOS. Kuphephe kakhudlwana ukusebenzisa i-6-8V low-voltage iron circuit.

3. Uma udinga ukwengeza izingxenye zangaphandle esikhundleni sengxenye eyonakele yesekethe ehlanganisiwe, izingxenye ezincane kufanele zisetshenziswe, futhi izintambo kufanele zibe nengqondo ukuze ugweme ukuhlanganisa okungadingekile kwe-parasitic, ikakhulukazi i-audio power amplifier integrated circuit kanye ne-preamplifier circuit kufanele ibe. iphathwe kahle. Itheminali yaphansi.

4. Kunqatshelwe ngokuphelele ukuhlola ngokuqondile i-TV, umsindo, ividiyo nezinye izinto ngaphandle kwesiguquli sokuhlukanisa amandla esinamathuluzi nezinto zokusebenza ezinamagobolondo asekelwe phansi. Nakuba irekhoda yekhasethi yomsakazo evamile inesiguquli samandla, lapho uhlangana ne-TV ekhethekile noma imishini yokulalelwayo, ikakhulukazi amandla aphumayo noma uhlobo lwamandla asetshenziswayo, kufanele uqale uthole ukuthi i-chassis yomshini ishajiwe yini. , ngaphandle kwalokho kulula kakhulu I-TV, i-audio kanye nezinye izinto zokusebenza ezikhokhiswa ngepuleti eliphansi lidala isifunda esifushane sokunikezwa kwamandla, okuthinta isifunda esihlanganisiwe, okubangela ukwanda okuqhubekayo kwephutha.

5. Ngaphambi kokuhlola nokulungisa isekethe ehlanganisiwe, kufanele uqale wazi umsebenzi wesekethe ehlanganisiwe esetshenzisiwe, isifunda sangaphakathi, imingcele eyinhloko kagesi, indima yephini ngalinye, kanye ne-voltage evamile yephini, i-waveform kanye isimiso sokusebenza sesekethe esakhiwe izingxenye ze-peripheral. Uma izimo ezingenhla zihlangene, ukuhlaziya nokuhlola kuzoba lula kakhulu.

6. Ungahluleli ukuthi isifunda esihlanganisiwe sonakaliswa kalula. Ngenxa yokuthi amasekhethi amaningi ahlanganisiwe ahlanganiswe ngokuqondile, uma isekethe ingajwayelekile, ingase ibangele izinguquko eziningi zamandla kagesi, futhi lezi zinguquko azibangelwa ngempela ukulimala kwesekethe ehlanganisiwe. Ngaphezu kwalokho, kwezinye izimo, i-voltage elinganiselwe yephini ngalinye ihlukile kokujwayelekile Uma amanani ehambisana noma esondelene, akusho ukuthi isekethe ehlanganisiwe muhle. Ngoba amanye amaphutha athambile ngeke abangele izinguquko ku-voltage ye-DC.