HP Color LaserJet CM4730 Multifunction Printer series - Manual (Page 305)

Solve problems with output accessories
When the 3-bin mailbox or the stapler/stacker is installed correctly with the output accessory bridge, the
LED at the top of the accessory is green. If the LED is off, is blinking, or is amber, a problem exists. See
Understand accessory lights for the 3-bin mailbox and stapler/stacker . For information about clearing
jams, see Jams .
1 LED for the stapler/stacker
2 LED for the 3-bin mailbox
ENWW Solve problems with output accessories 289