HP LaserJet Pro 400 MFP M425 - Manual (Page 175)

Clear jams
Jam locations
Jams can occur in these locations:
5
6
1 Document feeder
2 Output bin
3 Rear door
4 Tray 1
5 Tray 2
6 Optional Tray 3
Loose toner might remain in the product after a jam. This problem typically resolves itself after a few sheets
have been printed.
ENWW Clear jams 159