Yuav ua li cas xaiv lub computer fais fab mov siv lub multimeter
Cov khoom siv niaj hnub xws li cov ntawv teev lus, suab phaib, optical discs, hard drives, thiab lwm yam khoom siv tsis xav tau lub zog me me li lawv tau ua. Koj puas tau txiav txim siab tias koj yuav tsum muab koj lub cav rog rog nrog lub siab muaj zog?
Txoj kev txheeb xyuas cov khoom siv hluav taws xob hauv computer tau dhau los ua cov ntsiab lus ntawm ntau qib siab prawns cov kev xav hauv ntau cov ntawv xov xwm thiab cov ntawv xov xwm. Muaj peb yam tseem ceeb uas yuav tsum nco ntsoov: Kev tshuaj xyuas thawj zaug yuav tsum tsom mus rau qhov zoo ntawm cov khoom siv hauv cov khoom siv hluav taws xob, kev ua haujlwm, thiab kev npaj. Yuav kom ncaj ncees kiag li, lub tswv yim no yog qhov yooj yim me ntsis. Thawj zaug nws xav kom tus neeg siv kom muaj kev nkag siab zoo hauv hluav taws xob. Qhov thib ob, txhawm rau txhawm rau tshuaj xyuas cov khoom siv hluav taws xob kom huv si rau lub ntsws thiab cov khoom nruab nrog cev, koj yuav tsum tshem tawm lub hwj chim lub hau npog, uas ua rau tsis zoo rau cov tub lag luam lav lub foob. Yog tias lub foob tawg lawm, nws yuav ploj mus tam sim ntawd.Txawm tias muaj teeb meem nrog lub zog hluav taws xob, kuv yuav tsum ua nws tus kheej vim yog cov tub lag luam warranty. Hauv lawv qhov kev xav tau thiab tsis muaj kev pab, kuv ntseeg tias ntau tus neeg tshiab tshiab raug yuam kom tig mus ua prawns.
Qhov thib ob kov yog hnov lub hau thiab cua los ntawm lub hwj chim mov kiv cua tom qab lub tshuab tau khiav ib pliag.
Peb tsis hnov tsw: Tshawb xyuas seb lub tshuab hluav taws xob puas tawm cov ntxhiab tsw tom qab ua haujlwm ib ntus. Yuav ua li cas tus neeg tshiab tuaj yeem tsim kev txiav txim yam tsis muaj kev paub dhau los? Ob qhov kawg tsuas yog qhov sib sau ntawm kev paub txog kev paub.
Ntawm no, kuv qhia txog cov txheej txheem uas yuav pab tau rau cov neeg pib tshiab: siv lub multimeter los txiav txim seb lub hwj huam mov puas zoo heev los yog tsis raug. Tau kawg, koj yuav tsum xub nrhiav ib lub multimeter (qhov zoo tshaj yog ib qho digital) thiab siv tau ib qho. ATX fais fab mov qhov hluav taws xob tso zis feem ntau muaj 3.3V, 5.0V, thiab 12.0V. Thaum muaj kev sib txuas ntau dua, qhov sib txawv yuav pom ntau dua, thiab 12.0V yog lub zog tseem ceeb rau kev tsav cov khoom siv kho vajtse. Yog li ntawd, tom qab txuas tag nrho cov khoom ntawm lub computer. Txhawm rau txhawm rau txheeb xyuas 12V cov zis hluav taws xob, xaiv lub taub hau tso tawm dawb thiab ntsaws cov kab liab liab rau hauv kab daj interface thiab cov xim dub coj mus rau hauv cov kab dub.
Thaum lub kaw lus khau raj, peb tuaj yeem soj ntsuam tias cov ntaub ntawv multimeter yog nyob rau hauv tas li flux thiab tsis ruaj khov kom txog thaum lub kaw lus tau tag nrho booted. Hauv qhov no, nco ntsoov tus nqi hluav taws xob. Cov kev ua haujlwm ib txwm hu rau nws nyob nruab nrab ntawm 11.95 thiab 12.15 volts (kwv yees li 11.95 txog 12.15 volts; tsawg dhau los tso cai rau lub sijhawm ntev ua haujlwm tsis tu ncua ntawm cov khoom hnyav thiab tsis muaj peev xwm nthuav dav; siab dhau yuav ua rau lub cuab yeej kub thiab hnub nyoog ntxov ntxov) . Tom qab ntawd rov pib lub computer los ntawm nias lub pob reSET. Lub multimeter tus nqi yuav poob mus rau nws qhov qis tshaj plaws thaum lub sij hawm lub hwj chim-on tus kheej-test nyob rau hauv no point, yog li ua tib zoo saib xyuas seb nws hloov li cas. Ntawm no, ua ib qho kev ceeb toom ntawm tus nqi hluav taws xob.Cov khoom siv hluav taws xob yog qhov tsim nyog yog tias qhov sib txawv ntawm qhov hluav taws xob siab tshaj plaws thiab tus nqi qis tshaj tsis zoo heev (hauv 0.3V). Yog tias qhov sib txawv ntawm qhov sib txawv siab dhau lawm, lub hwj chim ntawm lub peev xwm thauj khoom tsis txaus, ua rau nws tsis tsim nyog rau kev xaiv. Kuv tus kheej tuaj hla 300W fais fab mov uas nquag sib tsoo thaum ua haujlwm thiab muaj qhov siab tshaj plaws ntawm 12.32V tab sis qhov tsawg kawg nkaus voltage tsuas yog 11.73V.
Thaum kawg, nco ntsoov qhov xwm txheej tiag tiag. Khiav ntau yam kev pab cuam thiab siv CD-ROM los ua suab paj nruag ib txhij kom tag nrho lub tshuab tuaj yeem ua haujlwm. Lub sijhawm no, xyuam xim rau qhov voltage; yog tias tsis muaj qhov hloov pauv meej, xaiv nws.
