關於「Canon error 839」標籤，搜尋引擎有相關的訊息討論：

Re: MF644Cdw scan to email error message 839 - Canon Communitycommunity.usa.canon.com › Office-Printers › MF644Cdw...Countermeasures for Each Error Code - Canon - Online Manualij.manual.canon › contents › WG7000_questions_0015List of Error Codes without Messages - Canon User Ma