I have a Hp LaserJet 2430tn and its telling me there's a jam in the back but when I open it i can't see a jam. does anyone know what could be wrong?

There is an access door in the back of the printer. Open the door and you should see jammed paper. If not then you have a faulty sensor or switch.

change Tray1 and Tray2 Paper size is any size and Paper type is any type as well as check override is on if its off change is on

i have a hp p1102w laser jet, it's about a year old. Hp want 130 replace it, I only paid 100 for it. I have a blinking red light. It tell me paper jam, I can find no Paper that would make the jam. After two day we looked at it again, when we turned it back on it said out of ink. I knew that was no true, because I had just put new ink in it. Now it's back to paper jam. What do I do? Does anyone have any ideas?

A jam has occurred in the registration
assembly area.
1. Press the 'down arrow' to see step-by-step
information.
2. Open the top cover and remove the print
cartridge.
3. Remove all media inside.
4. Lift the metal flap and remove any
remaining media.
5. Verify that the media size matches the
tray settings and the dial on the tray.
6. Reinstall the print cartridge and close
the top cover.
7. To exit, press ? .

The panel on the back of the printer should pop out and you can get to the paper jam throught there. Make sure you get all the peices out cuz sometimes all it takes it one very small piece of paper to make it not work.

Paper Jammed can be found inside the toner cartridge compartment.

It can also be found in the paper feeder.

It can also be found at the back of the printer (if it can be accessible or can be open).

It can also found in the toner cartridge itself.

Check this areas to find for a paper jammed.

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.

Press CANCEL JOB to clear the
print job from the printer
memory.
2. Turn the printer off, and then
turn the printer on again.
3. Go to http: www.hp.com/
support/lj2410, www.hp.com/
support/lj2420, or
www.hp.com/support/lj2430.
Click Download Drivers and
Software. Check for the
latest firmware image version
at the bottom of the page. If
this firmware image is newer
than the one installed on the
printer and the printer can
receive a firmware update,
download the newer firmware
upgrade. Not all printer
models can receive firmware
upgrades.
4. Try printing a job from a
different software program. If
the job prints, go back to the
first program and try printing a
different file. If the message
appears only with a certain
software program or print job,
contact the software vendor
for assistance.
1. After performing the actions
listed in the preceding item, if
the message persists when
using different software
programs and attempting
specific print jobs, disconnect
all cables that connect the
printer to the network or a
computer.
2. Turn the printer off.
3. Remove all memory DIMMs
or third-party DIMMs from the
printer. (Do not remove the
firmware DIMM in slot J1.)
4. Remove all of the
EIO devices from the printer.
5. Turn the printer on.
6. If the error message
disappears, reinstall
each DIMM and EIO device
individually, making sure to
turn the printer off and then
on again as you install each
device. To replace a DIMM,
see.
7. Replace the DIMM or
EIO device that caused the
error message.
8. Remember to reconnect all of
the cables that connect the
printer to the network or
computer.
9. If this error message persists,
replace the firmware DIMM.
10. Replace the formatter

Call HP. I think you can order a new roller kit pretty cheap.

What is the exact error message shown on the display ?
Does it makes any strange noise when you start it up ?