Yuav ua li cas txheeb xyuas lub motherboard nrog multimeter

Lub motherboard yog lub rooj tsav xwm luam tawm uas muaj lossis sib cuam tshuam tag nrho cov khoom tseem ceeb tsim nyog rau kev ua haujlwm ntawm lub computer lossis khoom siv.

Qhov no yog qhov tseem ceeb tshaj plaws nyob rau hauv lub tshuab computer, tsis ua hauj lwm nyob rau hauv nws ua rau lub fact tias tag nrho cov ntaus ntawv tsis ua hauj lwm los yog tsis ua hauj lwm tseem ceeb.

Txij li thaum koj nyob ntawm no, kuv xav tias koj tau nchuav dej rau hauv koj lub computer, muaj kev paub txog lub zog hluav taws xob lossis kev hloov pauv hauv koj lub tsev, lossis lub motherboard tsuas yog qub thiab koj txhawj xeeb nws yuav tsis ua haujlwm dua.

Koj tseem yuav tau kuaj xyuas yog tias qhov no yog qhov teeb meem hauv qab, txij li kev hloov ib qho ntawm lawv tuaj yeem kim npaum li kev yuav lub khoos phis tawj tshiab.

Hauv phau ntawv qhia no, koj yuav pom cov txheej txheem ua tiav ntawm kev kuaj xyuas lub motherboard nrog multimeter.

Cia peb pib.

Cov tsos mob ntawm ib tug phem motherboard

Ntau cov cim taw qhia rau lub motherboard faulty, nrog qee qhov pom tseeb thiab pom tseeb dua lwm tus. Ib co ntawm cov feem ntau muaj xws li

• Lub computer tsis pib
• Cov cuab yeej tsis pom cov cim ntawm lub neej thaum txuas nrog lub zog hluav taws xob,
• Tsis tu ncua tau txais lub vijtsam xiav ntawm kev tuag (nrog rau kev rub tawm cov lus yuam kev thiab lub ntsej muag tu siab),
• Lub computer freezes tsis tu ncua
• Sudden thiab nquag reboots ntawm lub processor,
• Tsis paub txog qee yam khoom siv kho vajtse xws li RAM,
• Koj lub computer yog overheating txaus ntshai,
• Computer suab los yog
• Burning tsw ntawm lub motherboard. 

Yog tias koj tab tom ntsib ib qho ntawm cov no, nws yog lub sijhawm los xyuas koj lub motherboard kom pom tias nws yuav tsum tau hloov lossis tsis tau.

Cov cuab yeej xav tau rau kev kuaj motherboard

Txhawm rau kuaj cov motherboard koj yuav xav tau

• Ntau yam
• Multimeter sojntsuam
• Screwdriver qhib koj lub computer.

Multimeter yog lub cuab yeej zoo tshaj plaws thiab tseem ceeb tshaj plaws rau kev kuaj xyuas qhov voltage thiab tsis kam ntawm lub motherboard, nrog rau lwm yam khoom siv hluav taws xob thiab khoom siv.

Yuav ua li cas txheeb xyuas lub motherboard nrog multimeter

Unplug koj lub computer, teem koj lub multimeter rau 200 ohms, thiab unplug ATX connector los ntawm lub motherboard. Muab cov hlau dub tso rau ntawm cov hlau chassis ntawm lub khoos phis tawj thiab cov xaim liab ntawm ib qho ntawm cov khoom siv hluav taws xob AC hauv av txuas. Lub motherboard zoo muab xoom ohms.

Muaj lwm yam kev ntsuas kev tiv thaiv koj tuaj yeem khiav ntawm lub motherboard kom paub tseeb tias nws nyob hauv qhov zoo.

Koj tuaj yeem ua qhov ntsuas DC voltage ntawm lub motherboard thiab nws yuav piav qhia txhua yam.

Qhov kev ntsuam xyuas kuj yog tsom rau kev kuaj xyuas qhov luv luv lossis ib qho kev qhib mus tas li ntawm lub motherboard lossis hauv cov khoom siv hluav taws xob. 

1. Unplug motherboard

Txhawm rau ntsuas qhov tsis kam ntawm ib lub voj voog, koj tsis tas yuav muaj cov dej ntws los ntawm nws.

Disconnect lub computer los ntawm lub hwj chim qhov chaw thiab tos ob peb feeb kom txog thaum tam sim no nyob rau hauv lub motherboard yog kiag li tawm.

Tom qab tos txog 10 feeb, mus rau kauj ruam tom ntej. 

2. Teem multimeter rau 200 ohm ntau yam

Kev tiv thaiv yog ntsuas hauv ohms, yog li koj tig lub multimeter dial nyeem ohms, uas yog sawv cev los ntawm lub cim omega (Ω).

Qhov 200 ohm ntau yog qhov qis tshaj plaws uas koj yuav pom ntawm lub tshuab multimeter thiab tseem yog qhov tsim nyog kom tau txais qhov tseeb tshaj plaws los ntawm peb qhov kev xeem. 

Los ntawm lub neej ntawd, lub multimeter qhia "OL" thaum nws tau teeb tsa los ntsuas ohms.

Txhawm rau kuaj xyuas seb cov kab ntsuas ntsuas tau raug teeb tsa raug, kov ob lub multimeter coj mus rau ib leeg thiab saib seb lub multimeter nyeem xoom (0) ohms.

Xwb, koj tuaj yeem tso ob lub xov hlau rau ntawm lub khoos phis tawj hlau chassis thiab ntsuas qhov kev nyeem ntawv rau xoom tsis kam.

Yog tias koj tau txais tus nqi no, txuas ntxiv mus rau kauj ruam tom ntej. 

3. Disconnect ATX connector los ntawm lub motherboard

ATX connector yog cov khoom siv uas muab lub zog rau lub motherboard los ntawm Power Supply Unit (PSU). Cov khoom siv hluav taws xob hloov AC voltage mus rau qis zog DC voltage siv los ntawm lub motherboard.

Txhawm rau qhib cov kev sib cuag ntawm lub hwj huam mov, disconnect lub hwj chim connector los ntawm nws. Koj kuj ua tib zoo ua kom nws tsis txhob ua puas tsuaj.

4. Muab Sensors rau Chassis thiab ATX Pinouts

Thawj qhov kev sim ntsuas koj ua yog ntawm qhov txuas. Koj xav sim tag nrho cov xov hlau uas txuas rau lub zog hluav taws xob thiab txiav txim siab lawv qhov tsis kam. 

Ua ntej, muab cov hlau dub rau ntawm cov ntaub ntawv hlau ntawm lub khoos phis tawj thiab cov xaim liab ntawm txhua qhov xim dub GND nyob ntawm qhov txuas.

Cov xov hlau dub no yog cov khoom sib txuas hauv av thiab xav tias yuav muab kev nyeem ntawv multimeter ntawm xoom ohms. Lwm tus nqi qhia tias luv luv Circuit Court nyob rau hauv lub hwj chim connector. 

Tom qab kuaj xyuas GND cov xov hlau, koj txav mus rau cov xov hlau xim.

Raws li nyob rau hauv qhov kev xeem dhau los, muab cov xim dub coj mus rau hauv cov ntaub ntawv computer thiab tso cov hlau kuaj liab rau txhua qhov xim ntawm cov xov hlau.

Rau cov xov hlau uas muaj xim no, koj yuav xav kom muaj qhov tsis kam ntawm yam tsawg 50 ohms.

Yog tias koj tau txais kev nyeem qis dua 50 ohms ntawm ib qho ntawm cov xov hlau, ces qhov no yog qhov ua txhaum thiab lub hwj chim txuas yuav tsum tau hloov. 

5. Txheeb xyuas qhov tsis kam ntawm cov terminals ntawm lub hwj huam mov

Yog tias tag nrho cov kab txuas txuas tau raug kuaj xyuas, koj txav mus rau cov khoom siv hluav taws xob motherboard.

Txhawm rau ua qhov kev sim no kom raug, koj yuav xav tau ATX-20 pinout tshwj xeeb rau koj lub motherboard. Cov duab hauv qab no qhia tau hais tias muaj 20 thiab 24 tus pin rooj uas yuav ua haujlwm rau koj.

Ntawm no peb yuav tau sim cov kab txuas hauv av uas sau tias "COM" kom pom tias lawv muaj kev tiv thaiv lossis tsis muaj. 

Muab qhov kev sojntsuam tsis zoo rau ntawm lub koos pij tawj hlau chassis thiab tso cov kev sojntsuam liab rau hauv txhua qhov ntawm cov dub no. Koj cia siab tias yuav tau txais xoom-tiv thaiv multimeter nyeem rau txhua tus pin.

Yog tias koj tau txais ib qho txiaj ntsig uas tsis yog xoom, koj muaj qhov qhia tau tias yuav muaj luv luv hauv cov khoom siv hluav taws xob.

Qhov no tej zaum yuav yog vim li cas lub motherboard tsis ua hauj lwm, yog li koj yuav tsum tau hloov lub hwj chim mov los yog tag nrho cov board. Cov xim muaj xim yuav tsum muaj qhov tsis kam ntawm yam tsawg 50 ohms.

Tshawb xyuas qhov voltage ntawm lub motherboard

Lwm txoj hauv kev los txiav txim siab seb lub motherboard puas yog los xyuas seb lub hwj chim txuas puas muab cov nqi ntawm cov volts.

Txhawm rau ua qhov no, ua raws cov theem no.

1. Txuas lub cuab yeej mus rau lub hwj chim

Koj xav tau tam sim no ntws los ntawm lub khoos phis tawj los ntsuas qhov ntsuas hluav taws xob ntawm nws cov khoom hauv motherboard, yog li koj ntsaws nws rau hauv lub zog. Koj tseem txuas lub 20-pin connector rau lub hwj chim mov.

2. Teem multimeter rau 20V DC voltage ntau

Txhawm rau kom tau txais qhov tseeb, koj tig lub xov tooj ntawm multimeter hla 20 VDC voltage ntau. DC voltage yog sawv cev rau ntawm multimeter los ntawm tsab ntawv "V- (peb-dot)" lossis "DCV".

3. rear sensor kev twb kev txuas

Vim hais tias lub multimeter's leads loj dhau los ua kom haum rau hauv txhua lub qhov kom sib cuag nrog cov khoom siv hluav taws xob, koj soj ntsuam qhov kev sib txuas nrog rab koob nyias. 

4. Muab cov sensors rau hauv qab koob sensor koob

Tam sim no koj them mloog ntawm no. Saib ntawm daim duab tau muab ua ntej, peb tuaj yeem pom tias GND pins nyob hauv qhov 3, 5, 7, 13, 15, 16 thiab 17.

Koj tso koj qhov kev sojntsuam tsis zoo rau ntawm rab koob ntawm ib qho ntawm GND qhov. Koj tuaj yeem hloov ntawm cov slots no los sim txhua tus.

Tsiv mus, koj tso cov kev sojntsuam liab rau ntawm cov koob ntawm cov slots sau npe 8, 9, thiab 14. Cov slots no ua haujlwm ntawm qhov sib txawv voltages thiab yog li muab cov txiaj ntsig sib txawv. 

5. Kev ntsuam xyuas cov txiaj ntsig

Rau tus pin 8 (PG lossis Fais Fab-OK) koj yuav xav tias lub zog hluav taws xob yuav tsum siab dua 2.5V, uas yog tus nqi ntawm volts lub computer siv los pib.

Tus nqi no yuav tsum poob mus rau xoom (0) thiab nce siab dua 2.5V dua thaum koj nias lub pob pib dua. 

Nrog tus pin 9 (VSB) koj cia siab tias tus nqi siab dua 5 volts, thiab nrog tus pin 14 (PS-ON) koj cia siab tias tus nqi ntawm 3 thiab 5 volts.

Yog tias koj nias lub hwj huam hloov, tus nqi ntawm tus pin 14 (PS-ON) tseem yuav poob mus rau xoom (0).

Lwm qhov kev nyeem ntawv ntawm lub multimeter qhia tau hais tias lub hwj chim txuas tsis raug lossis kev sib cuag hluav taws xob thiab yog li yuav tsum tau hloov. Qhov no tej zaum yuav ua rau lub motherboard tsis ua hauj lwm. 

Thaum ua qhov kev sim no, nws yog ib qho tseem ceeb uas yuav tsum tau xa mus rau cov duab saum toj no kom pom cov xim xim thiab qhov chaw rau txhua qhov kev sib txuas.

xaus

Kev kuaj xyuas lub motherboard nrog lub multimeter yog ib txoj kev nyuaj, vim hais tias lub hwj chim connector thiab lub hwj chim mov muaj slots nrog lub hom phiaj tshwj xeeb heev.

Txawm li cas los xij, ua raws li peb cov lus qhia yog txoj hauv kev zoo tshaj plaws los txiav txim siab yam tsis raug rau koj lub computer yam tsis tau tawm hauv koj lub tsev.

Cov lus nug nquag nug

Yuav ua li cas kom paub qhov voltage ntawm lub motherboard?

Koj teem lub multimeter mus rau 20VDC voltage ntau, rov qab sojntsuam lub hwj huam mov slots, tso lub dub sojntsuam ntawm tus GND tus pin, thiab ces muab lub liab sojntsuam ntawm lub grey, ntsuab, thiab liab doog xim.

Puas yuav tuag motherboard ntes hluav taws?

Seb lub motherboard yuav teeb nyob ntawm qhov faulty. Lub motherboard uas tuag tag yuav tsis pom qhov tshwm sim ntawm lub neej, thaum, piv txwv li, lub motherboard nrog lub qhov yuam kev RAM tseem tuaj yeem ntes hluav taws.