갤럭시 음량 조절

참고 : https://www.samsungsvc.co.kr/online/diagnosisgoVw.do?domainId=NODE0000033866&srChk=Y&bdKd=&bdSeq=&cenId=&method=&qnaId=&faqId=KNOW0000016253&node_Id=NODE0000143789&page=&pageNo=&stModelName=&svcPrdCode=&svcPrd3Code=&svcPrd2Name=&svcPrd3Name=&searchTarget=DOWNLOAD&dlpage=downMain&kb_Id=KNOW0000016253&coreword1=%C8%DE%B4%EB%C6%F9&coreword2=%BD%BA%B8%B6%C6%AE%C6%F9&stModelBusinessName=