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# How to solve the problem when the locking mechanism on the XF690MAXS keeps popping out

This article is dedicated to showing you how to deal with the problem when the locking mechanism on the XF690MAXS keeps popping out.

![](https://storage.crisp.chat/users/helpdesk/website/f647b0a9af965000/ladpjxdjy6u2y83natdnbqa1280720_uidab9.jpg)

Try to loosen this nut to fix the issue, after losing this nut a bit, the locking mechanism will work better.

![](https://storage.crisp.chat/users/helpdesk/website/f647b0a9af965000/image_hbldzg.png)