關於「Canon err30」標籤，搜尋引擎有相關的訊息討論：

液晶螢幕上出現的錯誤訊息。

- Canontw.canon › zh_TW › supportHow to fix Canon 5d mk iv "Err 30" while in the field?: Open Talk Forumwww.dpreview.com › Forums › Open TalkCamera gets Err 30 message. How do I fix it? - Canon EOS 7D - iFixitwww.ifixit.com › Answers › View › Camera+gets+E