(1) Yuav tsum ua kom lub ntsej muag ntawm tus neeg hais lus huv si, thiab cov hlua yuav tsum ruaj khov.
(2) Tsis tu ncua xyuas thiab kho cov ntsia hlau ntawm lub horn thiab lub bracket kom ntseeg tau tias muaj kev ruaj ntseg hauv av.
(3) Txoj kev kho ntawm lub horn muaj kev cuam tshuam zoo rau nws cov lus. Txhawm rau ua kom lub suab ntawm tus neeg hais lus zoo li qub, tus neeg hais lus tsis tuaj yeem ntsia tau nruj, yog li nws raug kho rau ntawm qhov tsis sib xws, uas yog, lub caij nplooj ntoo hlav lossis roj hmab ncoo yuav tsum tau nruab nruab nrab ntawm tus hais lus thiab lub kaw lus ruaj.
(4) Nco ntsoov xyuas lub tshuab hluav taws xob tso zis hluav taws xob. Yog tias qhov hluav taws xob siab dhau lawm, cov kev sib cuag ntawm lub tshuab hluav taws xob yuav raug hlawv, thiab yog tias qhov hluav taws xob tsawg dhau (qis dua qhov ntsuas hluav taws xob ntawm lub tshuab hluav taws xob), lub tshuab hluav taws xob yuav ua rau lub suab tsis zoo.
(5) Thaum ntxuav lub tsheb, tsis txhob ntxuav lub tshuab raj ncaj qha nrog dej, kom tsis txhob muaj dej nkag mus rau lub tshuab raj thiab ua kom lub tshuab tsis muaj suab nrov.
(6) Thaum kho lub horn, xyuam xim rau txoj haujlwm ntawm cov ntaub qhwv hlau thiab cov ntaub thaiv npog, thiab tsis txhob nruab lawv yuam kev.
(7) Lub suab txuas ntxiv ntawm tus hais lus yuav tsum tsis pub tshaj 10s, thiaj li tsis ua rau tus neeg hais lus puas.
(8) Do not put all kinds of foreign objects into the speaker to avoid abnormal sound.