How do I print. Keep telling me to pull out out tray

First, check your printer properties and make sure you are not telling it to go to the bypass tray.

If you are set to auto tray and its still trying to pull out off bypass tray. Check on the copier to make sure tray 1 isn't set for a special type of paper. If it is, change it to plain paper.

Two things to check for a problem like this:
1) Driver Settings:
If your computer's drivers are telling the machine to pull from the bypass tray it'll ignore the machine settings. You're kind of on your own here figuring it out, if you can't though then try deleting the printer from the computer and re-installing it (will default settings)

2) Manual Feed sensor:
When you put paper into the bypass try you're activating a flag which tells a sensor there's paper there, if this flag is stuck forcing the sensor to constantly think you have paper there it would always to pull from there. Find the flag, move it back and forth, hit it with some air from a can of air.

in the menu system of the printer you have to set the tray to "FIRST"
and you have to have a piece of paper loaded in the "bypass" (MANUAL) feed first BEFORE sending the print job.

1. Remove the packing material from the printer.

• 1. Remove the all orange tape from the outside of the printer.
  
• Remove orange tape from paper tray 2.
• Remove the orange packing tape from inside paper tray 3.
• Remove the spacer from inside the print cartridge area.

1. Load all paper trays.
2. 1. Pull the paper trays completely out of the printer.
   
3. Press the blue tab on the rear paper length guide and adjust the rear guide so that the pointer matches the size of the paper to be loaded.
4. Move the side width guides outward to match the desired paper size.
5. Add the media to the paper trays, make sure that it is flat in the tray at all four corners. Keep the media below the height tabs on the sides and rear of the tray. Push down on the metal lift plate to lock it in place.
6. Slide the trays back into the printer.
7. Install the print cartridge.
8. 1. Remove the print cartridge from the packaging.
   
9. Rock the print cartridge back and forth several times to "mix" the toner.
10. Pull the sealing tape from the end of the print cartridge to remove the entire length of the tape.
11. Open the top cover.
12. Slide the print cartridge into the unit.
13. Close the print cartridge door.
14. Connect the LAN cable (optional). (HP LaserJet 2420n, 2420dn, 2430tn, and 2430dtn models only)
15. Connect the power.

I suffered from the same problem for a long time. We got Xerox Phaser 8550 and 8560 here. I choose on computer "tray 2" but the printer just print from tray 1 which is empty.

Today i figured it out! It's some configuration at the printer. So go to "Paper tray setp" -> "Tray 1 mode" and "Tray 2 mode" -> change to "static".

I figure it's like this. Before it was "dynamic", it probably means the printer decides it's better to use tray 1 even though you choose tray 2 - and this decision is stupid. Changing it to "static" fixes this.

Let me know whether this works for you too!

Page 63 of your HP LaserJet 4600dn printer manual:

Controlling print jobs: (condensed version) MS Windows

Three settings affect how the printer driver tries to pull paper when you send a print job. The "Source," "Type," and "Size" settings appear in the Page Setup, Print, or Print Properties dialog boxes in most software programs.

Your question indicates that you wish to configure your printer to take from the top tray. That is a "Source" setting. So in the print Setup or Print Properties dialog box, change the "Source" to Tray 1.

Printing by Source means you choose a specific tray
from which you want the printer to pull paper. The printer tries to print from this tray, no matter what type or size is loaded in it. If you choose a tray that is configured from the embedded Web server for a type or size that does not match your print job, the
printer does not print automatically. Instead, it waits for you to load the tray you chose with the type or size of print media for your print job. If you load the tray, the printer begins printing. If you press the printer tries to print from another tray that has the correct type or size.

Kindly vote for my solution if this info was helpful.

save the document to your desktop or copy and paste into word or notepad..

tell ya printer settings to clean nozzles.
remove paper.
place paper into tray area but not a whole lot....15-20 sheets...

now print...hows that..:-)

Is the mechanical problem,pull out the bottom tray and inspected the tray parts,posible to damage or spring defect.

This is a Software Sw setting in the administrator mode. I suggest having your copier tech rep make this setting for you. He should know how.

Click File > Print > Properties to check your settings.
To verify that tray 1 is working, put paper in tray 1. Press green check until you see Information Menu. Scroll using arrows until you see Print Menu Map then press green check. If it prints from tray 1, your problem is not with the printer, but with the PC settings.

i has follow this step, but need to press green check button to resume print menu map.

tray 1 manual feed set to A4 paper plain size
manual feed is on.
there is paper on tray 1
ps setting tray1 manual feed is A4 plain size paper.

send print to tray1 manual feed even there is paper at tray 1
i still need go to the printer and press green check button to resume print