Waɗannan gazawar suna da tsari, kuma galibi ana iya gano su cikin mintuna 30 ko ƙasa da haka. An tsara wannan jagorar ta yadda a zahiri ke aiki da matsala: farawa daga abin da kuke iya gani akan allo, sannan aiki baya zuwa ga dalilin. Ko ka kulakasuwanci LCD nuni fuskaa cikin kantin sayar da kayayyaki, gudanar da bangarori a cikin kiosks na jama'a, ko cire kayan aikin da aka saka yayin haɓakawa, tsarin ganowa iri ɗaya ne.
Maganar Alamar Sauri
Yi amfani da wannan tebur azaman tacewa ta farko. Dalilai da yawa na iya haifar da alama iri ɗaya, don haka ɗaukar shi azaman jagora, ba amsa ta ƙarshe ba.
| Alama | Dalili Mai yiwuwa | Aiki na Farko |
|---|---|---|
| Cikakken allo mai duhu, babu hasken baya | Rashin wutar lantarki ko busa fis | Auna ƙarfin shigar da wutar lantarki a fil ɗin module |
| Allon a kunne amma sosai dim | Lalacewar hasken baya ko gazawar tsararrun LED | Gwada kewaye hasken baya da kansa |
| Hoto mara ƙarfi ana iya gani kawai tare da walƙiya | Rashin nasarar hasken baya - panel kanta yana aiki | Duba LED tube da da'irar direba |
| Nuni mai walƙiya ko walƙiya | Sako da kebul na kintinkiri ko ƙarfin lantarki mara ƙarfi | Sake saita duk masu haɗawa; duba wadata ripple |
| Layukan tsaye ko a kwance a kan allo | Fashe substrate ko laifin IC direba | Duban gani; musanya allon direba |
| Haruffa masu rutsawa ko ɓacewa | Rashin daidaituwa na yarjejeniya ko bug firmware | Tabbatar da saitunan sadarwa akan takaddun bayanai |
| Farar allo ba tare da abun ciki ba | Rashin farawa ko asarar sigina | Duba saitin yarjejeniya; tabbatar da sake saita lokaci |
| Hoton fatalwa mai tsayi ko ƙonewa{0}in | Hoto a tsaye akan kwamitin tsufa ya yi tsayi sosai | Zagayen wutar lantarki; gudu pixel{0}}samar da tsarin gwaji |
| Taɓa shigarwar ba yin rijista ba | Lalacewar kebul na taɓawa ko gurɓataccen firmware | Duba kebul na ribbon; sake{0}}mai sarrafa tabawa |
| Sake saitin bazuwar ko hawan keke | Ƙarfin wutar lantarki ko ƙarancin ƙarfin halin yanzu | Auna wadata tare da oscilloscope; ƙara kariya kariya |
Me A Haƙiƙa Yana Haɓaka Rashin Module LCD?
Lalacewar Hasken Baya
Hasken baya shine mafi yawanci guda ɗaya {{0} gazawar sassa a cikin samfuran LCD. Hannun LED ɗin suna dushewa a hankali akan rayuwar aikin su - masana'antun sun cancanci samfuran gaba da suMatsayin gwajin amincin semiconductor na JEDEC, da ƙididdige tsawon rayuwa sun bambanta sosai tsakanin mabukaci{0}}masu daraja da masana'antu{1}bangarori. Koyaushe koma zuwa takamaiman takaddun bayanan ku don ƙimar sabis ɗin sa a ƙarƙashin yanayin aiki, ba jimillar masana'antu ba.
Nuni tare da gurɓataccen hasken baya har yanzu yana wuce gwajin lantarki. Kwamitin yana aiki - ba zai iya samar da hoton da za a iya karantawa a cikin hasken yanayi na yau da kullun ba. Idan allon ya yi kama da karbuwa a cikin daki mai duhu amma ya zama kusan ganuwa a ƙarƙashin hasken ofis mai haske ko a waje, hasken baya shine abu na farko da za a gwada.
⚠️ Kuskuren gama gari:ramawa ga hasken baya mai dusashewa ta hanyar tura haske zuwa iyakar. Wannan yana haɓaka lalacewa na LED kuma yana rage ragowar rayuwa mai amfani na riga-kashi{1}} ɓarna. Zaɓin kayan masarufi tare da ɗaki mai haske da ya dace daga farkon yana guje wa matsalar gaba ɗaya - duba abin da ya bambantana kasuwanci{0}}samfurin LCDdaga mabukaci - madadin maki.
Matsalolin Haɗi da Kebul
Kebul na ribbon, masu haɗin zebra, da haɗin gwiwar solder suna raguwa a ƙarƙashin girgiza, hawan zafi, da maimaita sassauƙa. Yanayin gazawar kusan ko da yaushe yana ɗan lokaci: fizgewa a wasu wurare, ɓarnar nuni a ƙarƙashin girgiza, ko allon da ke aiki a farawa amma ya kasa a yanayin zafin aiki. Mayar da kowane mai haɗin kai kafin yin odar sassa yana warware babban rabo na gunaguni na filin akan sifili.
Damuwar Muhalli
Cold yana jinkirin amsawar kristal ruwa; zafi yana haɓaka tsufa na polarizer da delamination m; zafi yana lalata na'urorin lantarki daga ciki, yana haifar da ɓangarori da suka ɓace waɗanda ke daɗa muni a hankali cikin makonni. Koyaushe ƙayyade ga mafi munin yanayi{1}, ba matsakaita ba. Don aikace-aikace a cikin mahalli masu buƙata,hadedde LCD nuni mafita tare da daidaita muhalli ratingssun cancanci kimantawa kafin turawa, ba bayan gazawar filin ba.
⚠️ Kuskuren gama gari:gwada nuni a cikin yanayin lab da ɗaukan zai yi iri ɗaya a waje, a cikin ɗakin ajiya mai sanyi, ko kusa da tushen danshi - ba tare da tabbatar da cewa ajin IP da kewayon samfurin a zahiri da kewayon zafin jiki ya dace da yanayin turawa ba.
Matsalolin Samar da Wutar Lantarki da Laifin Direba
Wutar lantarki na haifar da lalacewar IC direba nan take. Hayaniyar Hayaniyar - AC a kan titin dogo na DC - yana haifar da ƙarin dabara, lalacewa mai tarin yawa: sake saitin bazuwar, hayaniyar hoto, da gajeriyar rayuwar LED. Tuntuɓi takaddun bayanan ƙirar ku don iyakar ƙarfin wutar lantarki da aka yarda da shi; babu kofa ta duniya da ta shafi kowane nau'in panel.
Bugs firmware da rashin daidaituwa na yarjejeniya wani nau'i ne na daban wanda ke kwaikwayon gazawar kayan masarufi mai gamsarwa. Farar allo ko fitarwa mai ɓarna bayan canjin allo ko sabunta software sau da yawa kuskuren daidaitawa ne, ba fashe fashe ba. Wannan bambanci yana da mahimmanci lokacinkwatanta LCD da LED bar allo Formats- fasahohi daban-daban suna da halaye daban-daban na ladabi da sa hannun kuskure.
Hanya Shida{{0}Tsarin Bincike
Yi aiki ta waɗannan a cikin tsari. Dakata da zaran kun gano kuskuren - swaps mara amfani yana bata lokaci kuma ku gabatar da sabbin masu canji.
Mataki 1 - Duban gani kafin kunnawa{1}.Nemo fashe-fashe, natsuwa a bayan kwamitin, ƙona alamomi akan PCB, da matsuguni ko igiyoyin kintinkiri. Idan kun sami lalacewa ta jiki, kada ku yi amfani da wuta. Gajerar haɗin haɗi na iya haifar da ɓarnar ɓarnar da ta fi tsada fiye da laifin asali.
Mataki 2 - Tabbatar da ƙarfin shigarwa.Yi amfani da multimeter a fil ɗin shigarwar wutar lantarki. Matsakaicin ƙimar ƙarfin lantarki don bangarorin TFT sune 3.3V, 5V, ko 12V - duba takardar bayanan ku. Karatun fiye da 5% a waje yana ba da garantin bincike. Don kurakuran lokaci-lokaci, ƙara oscilloscope don bincika ƙayyadaddun kayan aiki a kan ƙayyadaddun izini na takaddar bayanan.
Mataki 3 - Ware hasken baya.A cikin daki mara nauyi, haskaka fitilar tocila a saman panel a kusurwa. Idan za ku iya fitar da hoto mara nauyi, kwamitin yana aiki kuma kawai hasken baya ya gaza. Wannan gwajin guda ɗaya yana kawar da rabin bishiyar bincike cikin ƙasa da daƙiƙa 10 - kuma yana aiki daidai da kyau.mashaya -tsarin LCD nunikamar yadda akan madaidaitan bangarori na rectangular.
Mataki 4 - Musanya igiyoyi da alluna ta hanya.Loda sanannen ƙirar gwaji{{0}. Sauya kebul ɗin kintinkiri tare da ingantacciyar naúrar aiki. Idan laifin ya biyo bayan kebul ɗin, kebul ɗin shine matsalar. Idan ya tsaya tare da allo, allon yana gaba. Maye gurbin mafi ƙanƙanta, mafi ƙarancin kayan aiki da farko.
Mataki 5 - Duba ka'idar sadarwa.Farar allo ko fitarwar da aka yi wa garble bayan canjin allo kusan koyaushe kuskuren daidaitawa ne. Tabbatar da ƙimar baud (UART), yanayin SPI (CPOL/CPHA), ko adireshin I2C akan takaddar bayanan. Wannan matakin yana ɗaukar rabo mara daidaituwa na kurakurai a cikiwuraren nunin kioskinda ake maye gurbin kayayyaki a cikin filin, sau da yawa daga takardun da ba su cika ba.
Mataki 6 - Maimaita yanayin filin akan benci.Nuni wanda ke aiki a cikin dakin gwaje-gwaje amma ya kasa aiwatarwa kusan koyaushe yana da tushen zafi ko jijjiga. Mai haɗin haɗin da ke gefe a digiri 22 na iya buɗewa gaba ɗaya a digiri 55. Aiwatar da zafi mai sarrafawa yayin gwajin benci - kuskuren da ya bayyana sama da takamaiman zafin jiki yana gano haɓakar zafi a matsayin injina kai tsaye.
Gyara ko Sauya? Tsarin Tsari
Gyara yana da ma'ana lokacinLaifin yana cikin yanki guda ɗaya wanda za'a iya maye gurbinsa - na USB, tsarar haske na baya, sabunta firmware - module ɗin wani ɓangare ne na tsarin inda neman maye ya ƙunshi babban lokaci ko sake tsarawa, kuma farashin gyara bai wuce sabon naúrar ba.
Sauyawa yana da ma'ana lokacinalamu da yawa suna bayyana lokaci guda. Dim backlight, connector wear, and image ghosting bayyanuwar tare tabbataccen nuni ne na ƙarshen rayuwar sabis, ba laifi ɗaya da za'a iya gyarawa ba. Sauyawa kuma yana da ma'ana lokacin da tsarin na yanzu yana ba da mafi kyawun bayanai - mafi girman haske, mafi girman zafin aiki, mafi kyawun kariyar shiga - wanda zai rage nauyin kulawa na gaba.
Kafin aiwatar da kowane hanya, yi aiki ta waɗannan tambayoyi guda biyar:
- Shin wannan gazawar na'urar ta farko ce, ko kuma ta gaza a baya?
- Laifin yana iyakance ga abu ɗaya, wanda za'a iya maye gurbinsa?
- Shin jimlar farashin gyaran- sassa, aiki, da lokacin hutu - ya tsaya a fili ƙasa da farashin canji?
- Shin sashin da aka gyara zai dore da gaske ta hanyar sauran buƙatun sabis na tsarin?
- Shin sauyawa na yanzu yana ba da cikakkun bayanai dalla-dalla don wannan aikace-aikacen?
Idan uku ko fiye da amsoshi sun fi son musanyawa, wannan shine gabaɗaya mafi kyawun hanya. Bincika cikakkenkewayon samfurkoyi magana da gwanigame da samo asali. Don tallace-tallace da kuma alamar alamar,daidaitawar LCD na al'ada don siginar dillalisau da yawa yana isar da mafi kyawun dogon lokaci{0} tattalin arziki fiye da kai tsaye kamar{1}}don{2}kamar musanyawa.
Kulawa na rigakafi
- Gudanar da muhalli:Sanya cikin kewayon yanayin zafi da zafi na ƙirar, ta amfani da mafi munin yanayi{0} don tsarawa. A cikin matsanancin yanayi- ƴanci, rufaffiyar matsuguni tare da ingantattun ƙimar IP buƙatu ne, ba tsaro ba.
- Gudanar da wutar lantarki:Yi amfani da ƙayyadaddun ƙayyadaddun kayayyaki tare da kariyar haɓaka kayan aiki. Guji ci gaba da kunna fitilun baya a mafi girman haske - sarrafa haske mai daidaitawa yana rage lalacewa ta LED ba tare da tasirin gani akan amfani ba.
- Binciken da aka tsara:Duk wata - duba wurin zama na haɗin haɗin gwiwa kuma nemo magudanar ruwa. Kwata-kwata - yana gudanar da tsarin gwajin ganowa kuma tabbatar da wutar lantarki ƙarƙashin kaya. Shekara-shekara - duba kayan aiki da kuma duba yadudduka na gani don lalata ko tsufa.
Dominkai{0}} tashar sabisturawa da ke ci gaba da gudana a cikin manyan wuraren zirga-zirgar ababen hawa, duban kwata-kwata shine mafi girman{1}}aikin kulawa guda ɗaya.Miƙaƙƙen allon LCD da ake amfani da shi a cikin mahallin manyan kantunafuskantar ƙayyadaddun bayyanarwa ga zafi da sinadarai masu tsabta waɗanda daidaitattun jadawalin gyare-gyare bazai cika magana ba.
Tambayoyin da ake yawan yi
LCD na yana nuna farin allo - an karye panel?
Ba lallai ba ne. Farin allo ya fi sau da yawa gazawar sadarwa ko ƙaddamarwa fiye da lalacewa ta jiki. Tabbatar da daidaitawar yarjejeniya - ƙimar baud, yanayin SPI, ko adreshin I2C - akan takaddar bayanan ƙirar. Wannan yana da mahimmanci musamman bayan sabuntawar firmware ko musanyawa ta allo inda saitunan ƙila ba su canja wuri daidai ba.
Ta yaya zan iya gane idan hasken baya ko panel LCD ya gaza?
Hana tocila a saman allo a wani kusurwa a cikin daki mara nauyi. Idan kuna iya ganin hoto mara kyau, kwamitin yana samar da fitarwa daidai kuma kawai hasken baya ya gaza. Babu hoto kwata-kwata a ƙarƙashin hasken tocila yana nufin laifin yana cikin panel, allon tuƙi, ko hanyar sigina tsakanin su.
Za a iya gyara nunin kyalkyali ba tare da maye gurbin tsarin ba?
A mafi yawan lokuta, eh. Fitowar filo tana faruwa ne ta hanyar kebul ɗin ribbon maras nauyi, haɗin gwiwa mai siyarwar gefe, ko ripple mai yawa. Sake saita masu haɗin kai da tabbatar da kwanciyar hankali na wadatar wutar lantarki a ƙarƙashin kaya yana warware yawancin ƙorafe-ƙorafe kafin a buƙaci maye gurbin sassa.
Shin yana da aminci ga wutar lantarki akan nunin da aka fallasa ga danshi?
A'a. Bada samfurin ya bushe gabaɗaya a cikin ƙaramin yanayi{1}} kafin amfani da wuta. Ƙarfafawa akan rigar nuni yana haɗarin lalata lantarki da gajerun kewayawa waɗanda zasu iya lalata panel ɗin har abada.
Me yasa nunina yake aiki akan benci amma ya kasa a filin?
Filin tsaka-tsaki - gazawar kusan koyaushe ana haifar da shi ta hanyar faɗaɗa yanayin zafi a yanayin zafin aiki, girgizar ƙasa{1}}ƙasasshiyar haɗin haɗin haɗin gwiwa, ko natsuwa yayin farawa. Maimaita ainihin yanayin turawa - zafin jiki, girgiza, zafi - yayin gwajin benci. Don jagora kan zaɓar kayan aikin da ke sarrafa yanayin da ake buƙata akai-akai,wannan bayyani na babban zaɓin nunin LCD na {{0}ya ƙunshi bambance-bambancen keɓancewa waɗanda suka fi mahimmanci.
Kammalawa
Ana iya karanta gazawar module ɗin LCD da zarar kun san abin da za ku nema. Panel mai duhu, allo mai kyalli, fitar da gurbatacciyar hanya - kowace taswira zuwa jerin abubuwan da za a iya sarrafa su, da tsarin bincike da aka tsara yana gano ainihin kuskuren cikin sauri fiye da maye gurbin abubuwan da aka gyara a bazuwar. Haka tsari kuma yana gaya muku a fili lokacin da gyara ya gudana kuma maye gurbin shine amsar da ta dace.
Idan gazawar kwanan nan ta sanya sabon kayan aiki akan ajandarku, bincikayadda allon LCD na kasuwanci na zamani ya kwatanta da zaɓuɓɓukan nuni na gargajiya, kosallama tambayadon tattauna takamaiman buƙatun ku na aikace-aikacen.
