Toner Cartridge won't seat properly i n HP LaserJet 3000

HP say 2000 pages for a black cartridge and 1300 from the color cartridges.
HP 128A Cyan Original LaserJet Toner Cartridge HP Store UK HP 128A 2 pack Black Original LaserJet Toner Cartridges HP Store UK

the most common problem that causes the top cover not to close is the toner cartridge not being seated. Pull it out and reseat it.
Why did you open the cover in the 1st place. If it was to install a new cartridge, try putting the old one back in. If it works, the replacement has a problem.
If the cover doesn't close with the toner cartridge removed, then there probably is a linkage problem. Something may be broken, like the "print cartridge drive arm".
Go out to www.hp.com.

Did you purchase a new OEM HP toner or a refilled or remanufactured toner. It is possible that the chip is bad on the cartridge in which case if it is a true HP cartridge have them replace it. If you purchased 3rd party go after the vendor to replace it.

When the lid or door of an HP Laser Jet printer isn't properly closed, the printer's display will read "Error 12." You can usually correct an "Error 12" by closing the printer's door securely -- a process which may require that you first fix the orientation of a toner cartridge so that the door can close. In some instances, an "Error 12" appears due to some other issue, such as a missing toner cartridge or a defective paper-feeding component.

The Cyan Toner Cartridge is either not seated correctly or the cartridge is bad. Open the front of the printer, pull out the Cyan Toner Cartridge, reseat making sure it fits all the way to the back.

If the problem is not resolved replace the Cyan Toner Cartridge.

Don't know about your "primed" toner, but go to Diagnostics and run the PQ test. See what that looks likes. Go to Disable Cartridge Check and swap the black and cyan toner. Run another PQ test. Are the lines still there and are they black or cyan? If they are cyan, the cartridge is bad. If they are black it's not the cartridge. It going to take a tech to look at it.

Check the black cover on the pick up assembly under the cyan cartridge. If it is only a fraction too high cyan will not print. Make sure it is clipped in place correctly.

HP 4550 Color Laserjet Printer - Blank or white pages :

01. Your software application is sending an extra page-eject command.

02. Check the software’s printing configuration information. There is a problem with the network configuration.

03. Some sharing devices on networks may generate a blank page as a separator.

04. Check with the network administrator.

05. The printer may be feeding two or more pages at once because the paper is difficult to separate.

06. The sealing tape has been left in the toner cartridge.

07. The toner cartridge is empty or defective.

08. The laser scanner door does not open properly.

09. Remove and reseat the toner cartridge.

10. Check the laser scanner shutter door for proper operation.

11. The toner cartridge guide is damaged,
improperly positioned, or missing.

12. There is no transfer roller voltage.

13. Perform the Half Self-Test Functional Check to check all other electrophotographic processes.

14. Replace the transfer roller if necessary.

15. The high-voltage connectors are mounted on the high-voltage power supply (HVPS) PCA and protrude into the toner cartridge cavity.

16. Check the springs for functionality. Clean if dirty; replace if defective or missing.
The HVPS PCA is defective.

17.The DC controller PCA is defecti
There is no drum ground path.

18 Check the drum ground.

19. The laser scanner cable assembly is defective
.
20 The page length and margins are not set correctly for the paper size. Verify that the ribbon connector at J1307 of the HVPS is
properly seated.

21. If the HVPS has been removed recently, verify that the ribbon connector from the DC controller PCA to the HVPS is properly
seated at both ends..

22. Verify that the photoconductive drum is rotating properly. Perform is the drum diagnostic test to visually observe if the drum is rotating.
23. OR using a felt-tipped marker place an index mark on the edge of the drum outside the image area. Turn on the printer (wait for
drum rotation to occur), and then look to see if the drum has
24. moved. If the drum has not moved, investigate the mechanical
and electrical drum rotation circuitry and movement mechanisms.

25. The imaging drum shutter may not be retracting. Replace the imaging drum.

26. Lst but not the least, please fry to have the Printer int the Setcie

27. Use only HP Authorized Genuine catridges only

Hi, i have the same printer and regularly get this problem. Open the top cover and rotate the cartrige that is on top slightly backwards towards the back of the printer. Once you turn the printer on again this usually solves the problem

I had the same problem and found that one of the toner cartridges must have not been seated properly. I removed the black toner cartridge and re-fitted it. The printer now works fine again with no errors. 17H is a code relating to a fault in the rotation ......... possibly one or more toner cartridges need checking. Use the menu on the printer to turn it to the appropriate position (i.e. engine menu then select replacement of whichever toner you are checking).
Hope this fixes your as well.
Chris