Kev tsom xam ntawm qhov ua tsis tiav ntawm kev coj LCD TV_LCD TV kho lub tswv yim

1. Nws tsis muaj suab nrov thiab tsis muaj lub suab thaum pib, lub teeb hluav taws xob txuas ib zaug thiab tig mus rau hauv lub teeb tas li, thiab lub vijtsam nyem lub teeb dawb thaum nws qhib. Qhov txhaum no feem ntau tshwm sim los ntawm kev puas tsuaj rau lub teeb tsav tsheb tsav tsheb dhau los, lossis nws tuaj yeem tsim kev puas tsuaj rau lub raj teeb hauv lub vijtsam.

2. Muaj qhov muag plooj (tsom iav) tom qab tig lub computer, thiab lub suab zoo li qub. Qhov tshwm sim no yog tshwm sim los ntawm cov tswj hwm digital tsis zoo (tsis txuas rau vias lossis tsis zoo IC kev sib cuag), thiab lub thib ob yog qhov tsis zoo sab hauv.

3. Muaj peb qhov kev poob qis thaum lub tshuab raug qhib, lub teeb hluav taws xob tsis ua haujlwm, lub hwj chim tswj hwm ntawm tus kwv yau tau tawg, thiab CPU feem ntawm tus tij laug tsis ua haujlwm zoo.

Plaub, lub teeb ntais thiab tsis tuaj yeem qhib

Lub npav CPU tsis ua haujlwm tsis zoo lossis lub plhaw program IC (BIOS) tsis zoo, thiab kev sib cuag ntawm" BIOS" IC thiab CPU tsis zoo.

5. Yog tias muaj caj dab dub los yog txoj kab ci ci hauv TV TV, thov nug tus kws tshaj lij kom kho. Alibaba tsom rua kev saib xyuas, thiab APP yooj yim daws koj cov teeb meem txij nkawm.

6. Ua tsis tiav xws li lub vijtsam puv npo, kab ntsig tsis tu ncua, thiab lwm yam, yog tshwm sim los ntawm kev puas tsuaj ntawm cov ntas yeej pawg ntawm lub rooj sib dhos. Koj tuaj yeem hloov lub khub ntawm lub rooj tsav xwm tsis xwm yeem (txawm tias ib sab tawg, koj yuav tsis yuav ib khub thiab muag ib qho rau koj)) lossis ntsuas qhov twg IC yog qhov tsis zoo thiab tsuas yog hloov nws.

7. Lub vijtsam puv npo, puv npo xim xim dias, lub zog hluav taws xob tiv thaiv los ntawm luv Circuit Court, VS lossis VA voltage lub sijhawm tsis ua haujlwm, thiab lwm yam, yog tshwm sim los ntawm kev puas tsuaj ntawm Y board hauv PDP tshuab.

8. Ua tsis tiav xws li kev tiv thaiv khau raj thiab lub teeb ci ntom nti los ntawm tawg X lub rooj tsav xwm hauv PDP tshuab.

9. Muaj lub teeb ntawm lub vijtsam, tab sis tsis muaj tus cwj pwm, tsis muaj duab, lossis cov xim tsis xwm yeem, tsis muaj xim, cov duab tsis zoo, tsis ua haujlwm, thiab lwm yam. Qhov txhaum yog tshwm sim los ntawm teeb meem nrog lub laj thawj hauv PDPLCD Cov.

10. Cov hlua tsaus nti, cov kab thiab lwm qhov yuam kev yog qhov tshwm sim ntau tshaj plaws. Yeej, tuaj yeem sau lub ntsiab lus raws li teeb meem tshuaj ntsuam. Qee qhov yuav tsum tau kho cov xwm txheej yuav tsum tau kho, thiab qee qhov tshwm sim los ntawm qhov kub thiab txias, uas ua rau ACF ntawm COF thiab lub vijtsam sib txuas taw tes cais. Qhov tshwm sim no tuaj yeem siv nrog lub taub hau tiaj. Kho cov kab hauv qab ntawm cov hlau lo lus nrog nruab nrab kub-insulating.

11. Muaj lub teeb thaum lub tshuab tig, yuav tsis muaj lub teeb lossis lub suab rau ib ntus, tsuas yog (SHARP), thiab lwm yam, nws yog cov hluav taws xob inverter Circuit Court (high voltage board) ntawm lub rooj sib dhos uas muaj teeb meem, thiab kev laus thiab kev puas tsuaj ntawm lub teeb hluav taws xob yuav ua rau muaj kev tiv thaiv ntawm lub siab hluav taws xob. Txoj kev uas lub teeb hluav taws xob tseem ua tsis zoo rau qhov hluav taws xob high-voltage board nws tus kheej yog kom thim tawm qhov nruab nrab tus nqi sib piv tawm tswv yim Circuit Court rau ntawm high-voltage board.

1. Lub teeb rov qab tau muab tua thaum lub vijtsam LCD yog thaum lub AC taws teeb. Lub sijhawm no, cov suab tawm, chaw taws teeb tswj, thiab vaj huam sib luag khawm tswj lub luag haujlwm yog txhua yam. Qhov tshwm sim no yog tshwm sim los ntawm backlight Circuit Court tiv thaiv. Vim li cas feem ntau qhov teeb meem tsis zoo lub zog ntawm cov backlight koob tsav. CCFL backlight Circuit Court, yog tias qee lub teeb lub teeb rov qab qhib (feem ntau Circuit Court tiv thaiv tshwm sim los ntawm kev qhib lub raj lub qhov tso rau ntawm cov backlight koob txuas lossis lub qhov (socket tsis txuas nruj me ntsis) lossis qee lub raj xa hluav taws tuaj yeem ua rau saum toj no tsis ua haujlwm.

2. Tsis muaj qhov hloov pauv ntawm lub tshuab rov qab hloov lub suab, lub suab, cov chaw taws teeb tswj, thiab kev tswj hwm khawm khawm txhua qhov qub. Qhov txhaum no yuav tsum tau kuaj xyuas cov haujlwm ua haujlwm hauv qab no: 1) Kev pabcuam hluav taws xob ntawm lub teeb hluav taws xob rov qab, lub vijtsam loj yog 24 ntim, ob peb lub sijhawm siv 120 volts, cov ntxaij vab tshaus me me feem ntau 12 volts, 2), lub teeb meem tswj kev hloov pauv ntawm lub backlight boost board oscillator tso zis los ntawm CPU tswj Circuit Court feem ntau yog qib pib, feem ntau 3V-5V teeb pom kev zoo lub teeb tswj. Yog tias txhua qhov ua haujlwm sab saud tau ua tiav, backlight koob tswj hwm lub rooj zaum tuaj yeem hloov. Yog tias lub teeb hluav taws xob backlight hloov pauv, qhov tsis ua hauj lwm tseem zoo ib yam, feem ntau vim tias cov backlight lub raj hauv LCD screen lub rooj sib txoos puas ntsoog.

3. Thaum lub teeb hluav taws xob rov qab thiab tsis ci, nws feem ntau yog los ntawm kev sib cuag tsis zoo ntawm lub teeb lub teeb ntawm lub teeb lub teeb qaum ntawm lub rooj tsav xwm sab nraud thiab lub teeb, thiab lub zog hluav taws xob ntawm lub teeb taws rov qab yog siab lossis qis. Hauv qhov kev saib xyuas tiag tiag, 24V fais fab lub digital digital meter yuav tsum tsis txhob muaj qhov yuam kev 1V (fais fab mov). Lub zog 24V tso zis rau ntawm lub rooj tsavxwm yuav tsum ruaj khov txawm hais tias nws tsis muaj qhov thau khoom lossis thau khoom)

1. Poob qhov tshwm sim

Muaj peb qhov kev poob qis ntawm LCD xim TV backlight fais fab mov pawg thawj coj: ib qho tsis muaj qhov tso zis hluav taws xob, ua rau lub vijtsam dub, thiab lub suab tsis zoo li qub; lwm qhov yog qhov tso tawm hluav taws xob tsawg, ua rau muaj qhov ua tsis tiav ntawm lub vijtsam qis; qhov thib peb yog qhov tsim tawm voltage yog qhov txawv txav, uas yuav ua rau lub teeb liab qab tom qab pob tw. Lub teeb tawm mus thaum nws taws teeb.

2. Txhaum txiav txim txoj kev

(1) Kev kuaj hom Ntsuam xyuas seb qhov tsis kam thiab cov nti nyob ntawm lub pob hluav taws xob backlight fais fab yog dab tsi. Yog tias muaj kev sib cais lossis tawg, nws txhais tau tias nws raug puas ntsoog.

Kuaj seb qhov pom ntawm lub tshuab hluav taws xob muaj hluav taws xob siab (lossis lub zog cia hauv inductor) puas deformed, seb lub ntsiab sib nqus tau puas, seb lub pins tsis nthuav, thiab seb puas muaj kab ntawm sparking ze ntawm lub koob.

Kuaj xyuas lub raj hluav taws xob (lossis lub inverter raj) ntawm lub tshuab hluav taws xob backlight, seb puas muaj lub qhov (socket) raug txiav tawm, thiab lwm yam.

Kuaj seb puas muaj cov nti ua lub hauv paus xws li lub ntsuas tsis tau, lub ntsuas hluav taws xob, thiab sib txuas ntawm cov hluav taws xob hauv lub teeb hluav taws xob hauv lub teeb hluav taws xob.

(2) Qhov ntsuas hluav taws xob ntsuas hom LED backlight fais fab mov pawg thawj coj hluav taws xob voltage: lub zog muab hluav taws xob ntawm lub teeb hluav taws xob ntawm lub teeb hluav taws xob yog DC voltage, thiab nws cov nqi hluav taws xob feem ntau nyob nruab nrab ntawm ntau dua ib puas thiab ntau dua ob puas volts. Yog li ntawd, koj tuaj yeem siv multimeter nrog DC voltage ntawm 250V. Nws tuaj yeem paub tseeb tias nws yog dab tsi los ntawm kev ntsuas tus nqi hluav taws xob tawm los ntawm pawg thawj coj.

Cov zis hluav taws xob ntawm CCFL backlight fais fab mov pawg thawj coj: Txij li thaum cov zis ntawm CCFL backlight fais fab mov pawg thawj coj yog high-frequency alternating tam sim no, qhov ntsuas hluav taws xob yog siab li txog 1000V, yog li nws tau qhia hauv cov ntawv xov xwm dhau los thiab cov phau ntawv. Nws tsis tuaj yeem siv ib qho multimeter zoo tib yam los ntsuas nws qhov ntsuas hluav taws xob. Siv cov hauv kev xws li kos duab arc thiab kuaj hluav taws xob tsis zoo rau kev kwv yees. Qhov tseeb, nws tuaj yeem ntsuas nrog digital multimeter. Kev ntsuas tus qauv ntawm cov zis hluav taws xob ntawm qhov siab-voltage inverter yog qhia rau hauv qab no nrog Changhong iTV40650X LCD xim ntsuas TV ntsuas.

Thaum siv 700V AC voltage block ntawm DT9205 digital multimeter, qhov voltage yog 357V; thaum siv 200V AC voltage thaiv, qhov voltage yog 37.1V. Thaum ntsuas, yog tias cov ntawv ntsuas cov khoom ntsuas tsis zoo nrog cov zis tawm ntawm lub tshuab hluav taws xob high-voltage, hluav taws xob kab hluav taws xob yuav tshwm sim, uas tseem txhais tau tias muaj cov pa hluav taws xob loj; yog tias tsis muaj hluav taws xob thiab tsis siv hluav taws xob, nws txhais tau hais tias lub zog hluav taws xob muaj qhov tsis muaj qhov hluav taws xob ntau.

[Nco ntsoov] Txij li lub tshuab hluav taws xob loj hloov ntawm lub teeb kuaj xim TV tso tawm qhov ntsuas hluav taws xob siab, thiab cov kab hluav taws xob AC qhov ntev ntawm cov xov tooj digital tau teem rau kev ntsuas hluav taws xob tsawg AC voltage, qhov ntsuas tus nqi yog tsawg dua li tus nqi ib txwm. (li ntawm 1000V).

Backlight fais fab mov board ua hauj lwm voltage: Qhov ua hauj lwm voltage ntawm rov qab lub teeb hluav taws xob mov Circuit Court yog muab los ntawm lub zog hluav taws xob, feem ntau 24V. Yog tias cov backlight zog mov board tau ua haujlwm voltage tawm tab sis tsis muaj qhov ntsuas hluav taws xob ntau, nws txhais tau tias lub backlight fais fab mov board yog qhov txawv txav.

Backlight on / off tswj teeb liab: feem ntau ntawm cov backlight fais fab mov pab pawg siv qib siab (3-5V) hom pib, thiab qib qis kom kaw. Yog tias lub rooj tswj hwm hluav taws xob backlight tsis muaj lub teeb liab tswj hluav taws xob no, cov backlight power supply board tsis ua haujlwm thiab tsis muaj qhov tso zis hluav taws xob.

Backlight brightness tswj teeb liab: Thaum daws teeb meem txawv txav rov qab lub teeb ci, lub teeb nrig rov qab tswj teeb liab kuj yog qhov tseem ceeb pom. Lub teeb ci rov qab tswj kev hloov voltage ntawm Changhong iTV40650X LCD xim TV hloov pauv nrog lub ci hloov, tab sis tsis muaj qhov hloov pauv, qhov hluav taws xob tsis tuaj yeem yog 5V lossis 0V. Yog hais tias qhov voltage tus nqi yog 5V lossis 0V, nws yeej yuav ua rau lub qhov tsis ua haujlwm ntawm lub teeb ci ntsa iab.

(3) txoj kev thauj khoom qub

Txij li thaum lub backlight fais fab mov board muaj ib qho tiav kev tiv thaiv, lub thaiv hluav taws xob yuav ua haujlwm thaum lub teeb hluav taws xob rov qab yog qhov txawv txav, ua rau lub backlight fais fab fais fab nres nres ua haujlwm tom qab nws pib. Txhawm rau txiav txim siab seb qhov tsis ua hauj lwm yog vim muaj qhov txawv txav ntawm lub teeb qaum lossis qhov txawv txav ntawm lub teeb hluav taws xob backlight pawg thawj tswj hwm, lub dummy load yuav tsum siv los txiav txim siab qhov ua rau qhov tsis ua haujlwm.

CCFI, lub dummy load ntawm backlight power supply board: Cov kab mob tsis huv ntawm CCFL backlight fais fab mov pawg (inverter board) yog qhov zoo tshaj plaws los siv CCFL backlight tub, ntawm chav kawm, koj tseem tuaj yeem siv cov cuab yeej saib xyuas tshwj xeeb, piv txwv li, KYD- PWV2 ntawm Changhong Kuaiyidian Hluav Taws Xob .0 yog tshwj xeeb dummy load tooling rau CCFL backlight fais fab mov pawg thawj coj saib ntawm LCD xim TV. Nws tuaj yeem ua tau raws li kev saib xyuas ntawm CCFL backlight fais fab mov board nrog 1 txog 8 high-voltage tso zis cuam tshuam.

Tom qab cov dummy load tau txuas nrog, yog tias tus thawj tswj hwm inverter tuaj yeem ua haujlwm ib txwm, nws txhais tau tias backlight fais fab mov pawg thawj coj yog qhov qub, thiab qhov kev txhaum yog vim qhov txawv txav ntawm lub teeb rov qab; yog tias qhov kev txhaum no tseem ua tsis tau, nws txhais tau tias lub tuam txhab backlight fais fab mov.

[Ntsej muag] Yog tias tsis muaj lub qhov hluav taws xob zoo li tam sim no, koj tuaj yeem tuaj yeem ua ntau lub inverter dummy thauj nrog lub teeb taw qhia, raws li pom hauv daim duab hauv qab no. Cov diode VD1 hauv daim duab yog siv rau kev txhim kho, RU2 lossis RG2 tuaj yeem xaiv, thiab LED1 yog lub teeb ci ntsa iab, uas yog siv los ua lub teeb taw qhia. Vim tias LED1 tseem muaj qhov ntsuas kev txhim kho, nws tsis tas yuav tsum nruab VD1 hauv kev ua khoom tiag tiag.

Dummy load ntawm LED backlight fais fab mov lub rooj tsavxwm: Cov teeb meem tsis sib xws ntawm LED backlight fais fab mov board yog qhov yooj yim, koj tuaj yeem xaiv 25W / 220V incandescent teeb. Txuas nws mus rau ntawm tus pin ntawm cov zis davhlau ya nyob twg ntawm cov backlight zog mov board. Yog hais tias lub teeb incandescent tawm lub teeb thiab qhov hluav taws xob ntawm ob hnub yog qhov ib txwm, nws txhais tau tias lub teeb hluav taws xob backlight pawg thawj coj yog qhov qub, thiab qhov txhaum yog tshwm sim los ntawm qhov txawv txav ntawm lub backlight. Yog hais tias tus txhaum lawm tseem, cov backlight zog mov board yog txawv txav.

3. Kev hloov chaw

Kuaj xyuas yog tias backlight power supply board tsis muaj soldered lossis puas ntsoog, koj tuaj yeem hloov nws nrog lub qub backlight power supply board ntawm tib tus qauv rau kev tshuaj xyuas. Yog hais tias LCD TV rov qab mus rau qhov qub tom qab hloov, nws txhais tau tias hloov chaw nres tsheb fais fab rov qab raug puas lawm; Yog tias qhov kev txhaum no tseem ua tsis tiav, nws txhais tau hais tias qhov kev txhaum ntawd nyob rau lwm qhov chaw.

1. Cov ntsuas muaj tsis muaj fais fab

(1) Lub zog tsis ua haujlwm: qhov no yog qhov ua haujlwm tsis yooj yim. Lub zog hluav taws xob sab hauv thiab cov hluav taws xob sab nraud ntawm qhov txuas ntxiv ntawm LCD txuas ntxiv yog qhov sib xws. Lub qhov fais fab sab nraud yog qhov ntau dua. Hais txog hom ntawm cov fais fab mov, nws cov qauv yooj yim dua li lub hwj huam mov ntawm crt zaub. Cov tsis muaj zog feem ntau yog qee qhov me me, xws li fuse, rectifier choj. 300V lim capacitor, lub raj hloov fais fab, tswj lub qhov hluav taws xob IC, rectifier tso zis diode, lim Capacitors, thiab lwm yam. Cov niaj hnub siv tau pmw chips yog muaj nyob rau hauv kev ua lag luam LCD accessory khw muag khoom noj zoo li kuv.

(2) Tus tsav tsav tsis ua haujlwm: tsav tsav tsheb hlawv cov kev pov hwm lossis lub voltage regulator nti tsis ua haujlwm. Qee lub tshuab tau txuas nrog hloov hluav taws xob cov khoom siv hluav taws xob thiab tsim tawm ob pawg ntawm cov khoom siv fais fab, ib qho yog 5V rau cov cim kev ua haujlwm, thiab lwm qhov yog 12V. Lub siab siv hluav taws xob siv tau rau sab nraud. Yog tias lub tshuab hloov hluav taws xob ib feem ntawm lub Circuit Court tsis ua haujlwm, nws yuav ua rau ob qho kev hloov ntawm lub zog hluav taws xob tsis ua tiav. Ua ntej saib seb qhov hluav taws xob 12V yog li qub, thiab tom qab ntawd xyuas seb 5V qhov hluav taws xob tsis zoo, vim hais tias qhov ua haujlwm voltage ntawm MCU nti ntawm pawg tsav tsheb A / D yog 5V, yog li thaum koj pom qhov txhaum uas tsis tuaj yeem qhib, ua ntej siv multimeter los ntsuas lub 5V voltage. Yog tias tsis muaj 5V qhov hluav taws xob lossis 5V hluav taws xob ua qis heev, tom qab ntawd ib qho ua tau yog tias muaj teeb meem nrog cov theem nkag ntawm lub qhov hluav taws xob sib kis, uas yog hais, muaj teeb meem nrog cov hluav taws xob sib tshooj ntawm 12V hloov dua siab tshiab rau 5V. Qhov kev ua haujlwm tsis zoo no yog qhov tshwm sim heev. Txheeb xyuas qhov 5-lub davhlau ya nyob twg tus tswj qhov teeb meem (cov qauv qauv 8050SD -LM2596-AIC15-01 thiab lwm yam).

Ib qho ua tau yog qhov 5V load hnyav dua thiab 5V voltage rub tawm qis heev. Hauv lwm lo lus, muaj teeb meem nrog lub teeb liab ua haujlwm ntawm theem tom ntej, thiab qee qhov kev xaim ib qho kev puas tsuaj, ua rau lub nra hnyav nce, thiab 5V voltage tau rub qis heev. Tsawg, tshawb xyuas cov Cheebtsam uas muaj teebmeem ib qho dhau los. Tom qab hloov cov ntu tsis ua haujlwm, 5V tuaj yeem hloov kho kom zoo li qub. Qhov ua tsis yog feem ntau daws ntawm no. Nws tseem feem ntau ntsib tias qhov hluav taws xob 5V tsis tuaj yeem tig rov los ua li qub tom qab 5V qhov hluav taws xob rov mus rau li qub. Nws kuj tseem muaj ntau yam hauv cov xwm txheej no. Qhov laj thawj yog tias, ntawm qhov one tes, lub program ntawm MCU yuav raug ntxuav kom huv, uas yuav ua rau nws tsis rau khau raj, thiab MCU nws tus kheej puas ntsoog. Piv txwv, I / O chaw nres nkoj ntawm MCU puas ntsoog, yog li MCU tsis tuaj yeem luam theej duab cov pob. Thaum ntsib qhov txhaum zoo no tshwm sim los ntawm MCU, Qhov teeb meem ntawm kev nrhiav qhov kho vajtse yog qhov tsis muaj qab hau. Txawm hais tias koj hloov lub MCU, nws yuav tsis daws teeb meem, vim tias MCU yuav tsum muaj cov programmed thiab coded. Yog tias tsis muaj txoj hauv kev nrhiav cov thawj tsav tsheb tsav AD los hloov, peb tsuas siv tau cov A / D tsav pawg tsav hloov chaw xws li: 151D lossis 161B, thiab lwm yam.

2. Cov zaub tsis teeb thaum nws taws, tab sis lub teeb taw qhia lub zog taw qhia nws ib txwm nyob.

Qhov teeb meem zoo no feem ntau yog los ntawm qhov hluav taws xob tsis txaus, thiab lub thaiv hluav taws xob tau qhib. Hauv qhov no, feem ntau muaj cov zaub tso tawm ntawm LCD npo, thiab txoj hauv kev zoo yog" squint" ;.

3. Cov zaub yog xim dub yam tsis muaj backlight. Lub teeb ntsuab ntawm lub zog hluav taws xob nyob ib txwm.

Qhov taub tso tawm LCD npo muaj cov duab tso saib, uas feem ntau muaj teeb meem nrog lub zog hluav taws xob kis ntawm cov hluav taws xob high-voltage board. Tsom ntsoov saib seb puas muaj 12V fais fab mov (fuse F) thiab hloov voltage ntawm 3V lossis 5V yog qhov qub. Yog tias tsis muaj qhov hloov tawm hluav taws xob tswj qhov hluav taws xob vim yog MCU cov teeb meem, koj tuaj yeem ncaj qha rho tawm 3.3V ntawm 3-lub tshuab hluav taws xob tswj (AIC1084) hloov. Lub tswv yim ntawm kev kho cov khoom hluav taws xob siab (fais fab fuse ---- hloov lub raj tswj kev hloov) ---- lub zog tswj qhov hluav taws xob IC ---- thawb-rub cov plaub hau raj ---- lub hwj huam hloov raj ---- DA hloov kho Circuit Court (lub zog cia inductor, Rectifier) ​​-LC txhawb Circuit Court (txhawb transformer, txhawb zog) (hluav taws xob), ntsuas hluav taws xob-teeb.

4. Lub vijtsam muaj cov kab ci, cov ci ci lossis cov kab tsaus tsaus

Qhov teeb meem zoo no feem ntau ua haujlwm tsis zoo ntawm LCD npo. Lub ci ci tsis ua hauj lwm feem ntau tshwm sim los ntawm qhov teeb meem nrog cov xaim txuas nrog lub LCD screen lossis tus tsav tsheb IC ntawm ib qho kab thiab kem raug puas ntsoog. Cov kab tsaus nti feem ntau lub cev tseem ceeb ntawm lub vijtsam muaj paim quav, lossis TAB tswj kev ua kom sib haum tau qhib. Qhov teeb meem saum toj no ob qho yog ib qho kev tuag rau lub tshuab, thiab tsis muaj tus nqi kho, vim tias tus nqi ntawm qhov screen yog qhov siab heev.

5. Lub ntsej muag fuzzy lossis dawb

Qhov teeb meem zoo no feem ntau tshwm sim los ntawm qhov teeb meem nrog tsav voltage ntawm lub vijtsam. Ua ntej, hloov lub rooj tsav tsheb thiab tsav kab lub vijtsam mus kuaj. Yog tias nws ua tsis tiav, tshawb xyuas lub rooj sib txuas hluav taws xob ntawm lub vijtsam nraum qab. Kho cov tswv yim: seb puas muaj qhov ntsuas hluav taws xob thaiv qhov hluav taws xob (AIC1084) los ntawm 5V mus rau 3.3V ntawm lub rooj tsav tsheb. Lub zog tsim tawm. --- Screen tsav tsheb tsav fuse (F) -3.3V ----- DC-DC hloov hluav taws xob Circuit ---- tsis zoo voltage tsim IC (-7V) ---- kab thiab kem tsav IC.AAT1101AM150XN05 kev tswj fais fab screen Thaum lub nti puas ntsoog, nws tshwm zoo li lub vijtsam dawb thiab ib cov duab pib-dim. Nws yog ib qho teeb meem tshwm sim nrog lub vijtsam tshiab AAT1164M170EG01, uas yog siv rau BenQ FP71G + LCD. Lub vijtsam yuav nyob khoob tom qab siv rau lub sijhawm, thiab lub vijtsam yuav tshwm sim dua tom qab kaw thiab siv nyob rau lub sijhawm. Qhov nti no yog qhov khoom siv hluav taws xob ntau thiab kev tswj hwm rau cov ntxaij vab tshaus LCD. BenQ LCD saib feem ntau tawg thiab qhov txhaum yog: tshuaj ntsuam dawb.

6. Xim nrum tsis ua haujlwm

Feem ntau, koj tuaj yeem nkag mus rau hauv lub Hoobkas hloov kho hom kev ua haujlwm tau kho. Yog tias hom no tsis muaj, kev kho lub tswv yim: hloov lub vijtsam cable thiab pawg thawj coj saib kev hloov kho ----- rov sau dua cov kev pab tsav tsheb ----- cov tsav tsheb tsav tawg (tsis zoo li) ----- tswj lub IC ntawm lub vaj huam sib luag tom qab ntawm lub vijtsam tawg (tsis yog ib txwm) -------- Tshem tawm lub xov tooj cable thiab saib cov xim backlight (lub teeb nrig rov qab yog qhov laus ntawm lub teeb) -------- Hloov lub teeb Cov.

7. Cov xeeb ceem yog khoob lossis taug

Kho cov tswv yim: xyuas VGA cov kab teeb liab, thiab tsom saib xyuas seb qhov av xaim ntawm RGB peb-xim kab puas raug txuas nrog ----- hloov lub vijtsam kab lossis cov txiag hloov kho ----- rov sau dua cov kev pabcuam tsav --- - pauv chaw tsav-- LCD npo backplane teeb liab interface IC tawg - --- LCD npo backplane zoo ib yam li potentiometer haum --- LCD npo lub teeb qhia cov phaj misalignment --- polarizer misalignment

8. Muaj stains sab hauv LCD npo

Lub tswv yim txij nkawm: So los yog hloov cov zaj duab xis tiv thaiv ----- rhuav tshem lub vijtsam lub cev kom ntxuav sab nraud polarizer thiab plexiglass (kho nrog cov paj rwb, dej ntshiab) --- qhuav los ntawm cov pa roj

9. LCD npo lub teeb xau lossis lub teeb tsis sib xws

Lub tswv yim txij nkawm: rov kho lub raj teeb ----- kho lub teeb taw qhia

10: LCD npo cov ntsiab lus zoo

Ib lossis ob qhov loj qaim, koj tuaj yeem sim maj mam nias lub qaim ci nrog koj lub ntsis ntiv tes, thiab lawv tuaj yeem ploj, qhia tias hloov lub raj thiab cov xaim hluav taws xob ntawm cov pixel no feem ntau yog kev sib txuas virtual. Cov pob dub me thiab cov xim txho me me tuaj yeem tshwm sim los ntawm cov plua plav ntawm cov phiaj xwm sab hauv los yog cov ncov qaumteb qabteb. Yuav tsum ntxuav.

11: LCD npo lub teeb ci tsawg

Txheeb xyuas ADJ qhov hloov kho lub teeb hluav taws xob ntawm lub siab hloov hluav taws xob, hloov lub teeb lub raj -------- hloov lub tshuab hluav taws xob high-voltage board -------- kho lossis hloov lub teeb qhia kev teeb.

12: Kev ua yuam kev sai" tawm ntawm ntau zaus"

Saib kab ntawv teeb tsa -------- Rov sau MCU tus tsav tsheb ------- Hloov EPROM ------ Rov sau EPROM program ----- Hloov chaw tsav tsheb

13: Tom qab fais fab tuag, tsis txhob nyem khawm hloov, lub vijtsam dawb yuav tshwm sim rov qab, thiab cov duab tuaj yeem pom ib txwm tshwm tom qab lub pob nyem

Lub teeb liab hloov ntawm lub tshuab hluav taws xob high-voltage board interface thiab ADJ cov teeb liab raug rov qab sib txuas, thiab ib feem ntawm cov teeb liab teeb hluav taws xob tso tawm ntawm tsav board MCU yog qhov txawv txav, thiab MCU program tuaj yeem rov sau dua los kho nws. ------- Hloov MCU

14: ntxiv ib qho ntxiv

Thaum hloov cov laus ntsuas ntawm lub teeb lub raj, xyuas seb qhov loj me ntawm lub teeb lub raj.