![background image](https://i.printerdoc.net/HP LaserJet Pro 400 MFP M425/en/HP LaserJet Pro 400 MFP M425_en170.png)
Load Tray 1, <PLAIN> <SIZE> / Cleaning mode, OK to start
Description
The product is ready to process the cleaning operation.
154 Chapter 8 Solve problems
ENWW
![background image](https://i.printerdoc.net/HP LaserJet Pro 400 MFP M425/en/HP LaserJet Pro 400 MFP M425_en171.png)
Recommended action
Load Tray 1 with plain paper in the size indicated, and then press the
OK
button.