HP LaserJet M9040M9050 Multifunction Printer series - Manual (Page 207)

Control-panel messages
The product provides robust control panel messaging. When a message appears on the control panel,
follow the on-screen instructions to resolve the issue. If the product displays an “Error” or “Attention”
message, and no steps are shown to resolve the issue, turn the product off then on. Contact HP support
if you continue to experience issues with the product.
To get additional information for warnings that appear in the status line, touch the Warning button .
For additional information on a variety of topics, touch the Help button in the upper-right corner of the
home screen.
ENWW Control-panel messages 193