HP LaserJet Pro 400 Printer M401 series - Manual (Page 105)

Jam in <location>
Description
The product has detected a jam.
Recommended action
Clear the jam from the location indicated. The job should continue to print. If it does not, try reprinting
the job.
If the message persists, contact HP support.
Jam in Tray <X> Clear jam and then Press [OK]
Description
The product has detected a jam.
Recommended action
Clear the jam from the location indicated, and then press OK .
If the message persists, contact HP support.
Load tray 1 <TYPE>, <SIZE>
Description
No trays are configured for the paper type and size that the print job is requesting.
Recommended action
Load the correct paper into Tray 1, or press OK to use paper in a different tray.
Load tray 1 PLAIN <SIZE> Cleaning Mode
Description
The product is ready to process the cleaning operation.
Recommended action
Load Tray 1 with plain paper in the size indicated, and then press the OK button.
Load tray <X> Press [OK] for available media
Description
The tray is empty.
Recommended action
Load paper into the tray to continue printing. Press the OK button to select a different tray.
ENWW Interpret control panel messages 93