1. Paub meej qhov tshwm sim txhaum
Tshawb xyuas cov tshuaj tiv thaiv tom qab lub ntsuas hluav taws xob tau teeb tsa (xws li seb lub teeb nraub qaum puas ci, seb puas muaj cov ntsiab lus pom, lub suab txawv txav, thiab lwm yam).
Saib xyuas seb lub vijtsam LCD puas muaj kev puas tsuaj rau lub cev (kev tawg, ua kua dej, hlawv cov cim, thiab lwm yam).
2. Tshawb xyuas lub hwj chim tawm tswv yim
Ntsuas qhov input voltage: Siv ib lub multimeter los xyuas seb qhov tseeb input voltage yog ruaj khov ntawm 12V.
Yog tias qhov hluav taws xob ntau dua 12V (xws li siab dua 15V), nws yuav raug puas tsuaj los ntawm overvoltage.
Xyuas seb lub hwj chim adapter los yog cov khoom siv hluav taws xob tso tawm yog qhov txawv txav.
Tshawb xyuas lub hwj chim polarity: Paub meej tias qhov zoo thiab qhov tsis zoo ntawm lub hwj huam sib txuas yog txuas nrog rov qab (kev sib txuas rov qab tuaj yeem ua rau luv luv lossis hlawv).
3. Tshawb xyuas cov kab hluav taws xob sab hauv
Lub zog board check:
Tshawb xyuas seb puas muaj cov khoom siv hluav taws kub ntawm lub rooj tsavxwm (xws li lub taub hau capacitor, IC nti hlawv, fuse tshuab).
Kuaj seb qhov tso zis hluav taws xob ntawm lub rooj tsav xwm hluav taws xob (xws li 12V / 5V thiab lwm qhov hluav taws xob theem nrab) yog qhov qub.
Motherboard signal tso zis:
Xyuas seb cov cables los ntawm lub motherboard mus rau lub LCD npo tsis zoo los yog luv luv.
Siv ib qho oscilloscope lossis multimeter los ntsuas seb LVDS cov kab hluav taws xob puas muaj cov zis.
4. Kev soj ntsuam ntawm LCD npo tsav tsheb Circuit Court
Xyuas seb lub vijtsam tsav tsheb (T-Con board) puas pom tseeb puas (xws li nti hlawv lossis capacitor tsis ua haujlwm).
Yog tias overvoltage ua rau kev puas tsuaj, cov ntsiab lus txhaum feem ntau yog:
Kev tswj fais fab IC tawg.
Lub voltage regulator diode los yog MOS raj nyob rau hauv lub screen fais fab mov Circuit Court yog hlawv.
5. Overvoltage tiv thaiv mechanism kev soj ntsuam
Xyuas seb lub monitor puas tsim los nrog kev tiv thaiv overvoltage circuits (xws li TVS diodes, voltage stabilization modules).
Yog tias tsis muaj kev tiv thaiv Circuit Court, overvoltage tuaj yeem cuam tshuam ncaj qha rau lub vijtsam LCD tsav tsheb.
Sib piv cov khoom zoo sib xws, paub meej tias seb 12V cov tswv yim yuav tsum tau tsim kev tiv thaiv ntxiv.
6. Kev rov ua yuam kev thiab ua pov thawj
Yog tias muaj kev tso cai, siv lub zog hloov kho kom simulate 12V cov tswv yim, maj mam nce qhov voltage (xws li mus rau 24V) thiab saib seb qhov kev tiv thaiv puas tshwm sim lossis puas.
Hloov tib lub qauv LCD npo nrog kev lees paub ntawm kev ua haujlwm zoo thiab kuaj seb nws puas ua haujlwm li qub.
7. Cov lus xaus thiab cov lus qhia rau kev txhim kho
Muaj peev xwm ntawm overpressure:
Yog hais tias qhov input voltage yog txawv txav los yog qhov kev tiv thaiv Circuit Court ploj lawm, overvoltage yog ib qho ua tau.
Nws raug nquahu kom tus neeg siv muab daim ntawv tshuaj ntsuam xyuas lub hwj chim adapter.
Lwm yam muaj peev xwm:
Kev thauj mus los ntawm kev vibration ua rau loosening ntawm cable los yog desoldering ntawm cov khoom.
Static electrostatic lossis ntau lawm tsis xws luag ua rau lub vijtsam tsav nti ua tsis tiav.
8. Kev ntsuas ntsuas
Hloov lub vijtsam LCD uas puas lawm thiab kho lub rooj tsavxwm fais fab (xws li hloov cov khoom siv hluav taws xob).
Nws raug nquahu kom cov neeg siv siv cov khoom siv hluav taws xob tswj hwm lossis hloov lub adapter qub.
Cov khoom tsim kawg: ntxiv overvoltage tiv thaiv Circuit Court (xws li 12V input davhlau ya nyob twg txuas nrog TVS diode parallel).
Post lub sij hawm: Oct-17-2025
