Jam in output bin in hp laserjet 3050 - HP LaserJet 3050 All-In-One Printer

SOURCE: jam in output bin

Make absolutely sure there actually is no paper jammed in there. 
I came to this page with the same warning, convinced I had a software glitch. Turned out there was a page accordion-folded down to the size of a pencil lead. I didn't know paper could be folded that small. 
Of course, everyone here may be a lot brighter than I am, in which case sorry to waste your time. But for me, the obvious first fix needed to be thoroughly explored before cursing HP and their machine.

SOURCE: low memory display on HP Laser Jet 3050

Hello All,

Please perform the following:
Super NVRAM init
When a super NVRAM init is performed, the all-in-one language and telecom country/region settings
are undefined. The user is prompted to set the language and telecom country/region. Until these settings
are defined, the all-in-one will not return to the Ready state.
CAUTION A Super NVRAM init erases all data that is stored in both the unprotected and
protected NVRAM memory.
To perform a super NVRAM init
1. Turn off the all-in-one.
2. Press and hold down the * and 5 buttons.
3. Continue to hold down the buttons while you turn on the all-in-one. Hold the buttons throughout
the entire power-on sequence.
4. When Permanent Storage Init. appears on the control-panel display, release the buttons.
5. When prompted, set the language and telecom country/region.
6. Allow the all-in-one to return to Ready before using it.

SOURCE: HP Laserjet 3050, need to press ok each time printing

did it work before? check paper size for trays - suspect it is set for a4, change to letter size

SOURCE: HP Laserjet 3050 All in one printer - Unable to receive faxes?

Vonage is dgital. fax machines are analog

SOURCE: HP Laserjet 3050 No paper pickup

it could be of dust particals on printer's plastic kind of thing looks like xray paper just clean this and restart your printer - it works