HP Color LaserJet 9500 Multifunction Printer series - Manual (Page 26)

http://www.hp.com/go/clj9500mfp
10 Chapter 1 – MFP basics Rev. 1.0
Loading input trays
This section contains information about loading standard- and custom-size media into tray 1, tray 2, tray 3, and the 2,000-
sheet side input tray (tray 4).
Caution To avoid a jam, never add or remove paper from tray 1 or open tray 2, tray 3, or the 2,000-sheet side input
tray (tray 4) while printing or copying from that tray.
To avoid damaging the MFP, print labels and envelopes only from tray 1. Send labels and envelopes to the
face-up bin. Print on only one side of labels and envelopes.