1. Simbisa kukanganisa kwechiitiko
Tarisa maitiro mushure mekunge cheki ichibatidzwa (senge iyo backlight yakapenya, kana paine chero kuratidza zvemukati, abnormal ruzha, nezvimwe).
Tarisa uone kana iyo LCD skrini ine kukuvara kwemuviri (kutsemuka, kubuda kwemvura, mavanga ekupisa, nezvimwewo).
2. Simbisa kuiswa kwesimba
Yera iyo voltage yekupinda: Shandisa multimeter kuona kana iyo chaiyo yekuisa voltage yakagadzikana pa12V.
Kana iyo voltage yakakwira zvakanyanya kupfuura 12V (sepamusoro pe15V), inogona kukuvadzwa nekuwedzeredza.
Tarisa uone kana adapta yemagetsi kana dhizaini yemagetsi inobuda haina kujairika.
Tarisa magetsi ekupa polarity: Simbisa kana matanda akanaka uye asina kunaka eiyo magetsi interface akabatana nereverse (reverse connection inogona kukonzera kupfupika kana kupisa).
3. Tarisa matunhu emukati
Power board check:
Tarisa kuti pane zvakapiswa here pabhodhi remagetsi (senge capacitor bulge, IC chip burning, fuse blown).
Edza kana magetsi emagetsi ebhodhi remagetsi (akadai se12V/5V uye mamwe magetsi echipiri) akajairwa.
Motherboard chiratidzo chinobuda:
Tarisa uone kana tambo kubva kubhodhi reamai kuenda kuLCD skrini haina kunaka kana ipfupi-inotenderera.
Shandisa oscilloscope kana multimeter kuyera kana LVDS chiratidzo mutsara wabuda.
4. Kuongororwa kweLCD screen driver circuit
Tarisa uone kana iyo screen driver board (T-Con board) iri pachena yakuvadzwa (sekupisa chip kana capacitor kutadza).
Kana overvoltage ichikonzeresa kukuvadzwa, zvakajairika kukanganisa mapoinzi ndeaya:
Simba manejimendi IC kuparara.
Iyo voltage regulator diode kana MOS chubhu iri muchiratidziro magetsi emagetsi wedunhu inopiswa.
5. Overvoltage protection mechanism evaluation
Tarisa uone kana iyo yekutarisa yakagadzirwa ne overvoltage ekudzivirira maseketi (akadai seTVS diode, voltage kudzikamisa modules).
Kana pasina dunhu redziviriro, overvoltage inogona kukanganisa zvakananga iyo LCD skrini yekutyaira chinhu.
Kuenzanisa zvigadzirwa zvakafanana, simbisa kana iyo 12V yekuisa inoda yekuwedzera dhizaini yekudzivirira.
6. Mhosva kudzokorora uye kuongorora
Kana mamiriro ezvinhu achibvumidza, shandisa chinogadziriswa magetsi kutevedzera 12V yekuisa, zvishoma nezvishoma wedzera voltage (senge 24V) uye tarisa kana dziviriro yakatangwa kana kukuvadzwa.
Tsiva iyo yakafanana modhi yeLCD skrini ine simbiso yekushanda kwakanaka uye edza kana iri kushanda zvakajairika.
7. Mhedziso uye mazano ekuvandudza
Kugona kwe overpressure:
Kana iyo voltage yekupinza isiri yakajairika kana yekudzivirira yedunhu isipo, overvoltage ndicho chikonzero chinogona kuitika.
Zvinokurudzirwa kuti mushandisi ape simba adapter yekuongorora report.
Zvimwe zvingangoitika:
Kutenderera kwekufambisa kunokonzera kusunungurwa kwetambo kana desolder yezvikamu.
Static electrostatic kana kukanganisa kwekugadzira kunoita kuti chidzitiro chedhiraivha chikundikane.
8. Matanho ekutevera
Tsiva yakakuvadzwa LCD skrini uye gadzirisa bhodhi remagetsi (sekutsiva zvinhu zvakatsva).
Zvinokurudzirwa kuti vashandisi vashandise magetsi anogadziriswa kana kutsiva iyo yekutanga adapta.
Chigadzirwa dhizaini kupera: wedzera overvoltage kudzivirira wedunhu (senge 12V yekuisa terminal yakabatana kune yakafanana TVS diode).
Nguva yekutumira: Oct-17-2025
