Feem ntau cov neeg siv khoom tsis tuaj yeem ua tiav lawv cov scanners vim lawv nrhiav tsis tau S/N tooj lossis daim ntawv tso cai code.
Cov lus qhia hauv qhov teeb meem no yuav qhia koj yuav ua li cas qhib koj lub scanner sai. Nyem rau ntawm cov duab kom paub ntau ntxiv.