故障现象分析“ERR30”是佳能EOS 5D MarkⅡ相机经常出现的故障信号。该故障出现的时候,相机不能拍摄,后背显示屏给出如图1所示故障提示信息。这种情况下,通常使用者会按照该提示尝试排除故障,比如关机,重新开机;或者关机取出CF卡,取出电池,重新装入,再开机;再或者将相机恢复出厂值,然后取出电池,重装,开机。当然,事实上这三种尝试都解决不了这个问题,故障 Fault phenomenon analysis “ERR30 ” is the Canon EOS 5D Mark II camera often appear fault signal. When the fault occurs, the camera can not shoot, the back display shows the fault message as shown in Figure 1. In this case, usually the user will follow the prompts to try to troubleshoot, such as shutdown, reboot; or shut down remove the CF card, remove the battery, reload, and then boot; or restore the camera to the factory default value, and then remove the battery, Heavy equipment, boot. Of course, in fact, these three attempts can not solve this problem, failure