Lexmark CS921
Using special characters in the username on any app that needs authentication, such as Device Quotas, prevents users from logging in.
Use the correct case for any Unicode character used in a username.
If the issue persists, then search for more information related to this issue or contact customer support.
請使用隨附的碳粉刷來清潔列印頭鏡片,以免發生列印品質的問題,例如:線條和髒污。
瞭解如何更換印表機的廢棄碳粉回收瓶。定期更換廢棄碳粉回收瓶,可防止碳粉溢出。