HP Color LaserJet 2840 Calibrating Repeatedly after Power-Up

[MikeK-CH]

Hello all,

I have an HP Color LaserJet 2840 that works pretty good for its age.  However, the past year I have seen the calibration take longer and longer.  I power it up and instead of the usual 2 minutes to being ready, it will be over 5 minutes.

After the warming up phase, it will calibrate about 3 times before being ready.  Then I can print a document successfully, and as soon as the document finishes printing (however many pages it is), the printer will then calibrate one more time. 

After that last calibration, I can print several documents for a good period of time before it will calibrate again.

The print quality from the printer is still very good, so we enjoy the use of this high quality printer... not ready to scrap it yet because the quality is so good.

We just do not understand why it can take so long to get this repeated calibration completed after the initial power up.  We do not print every day, perhaps 1 to 2 times a week, so we mostly keep it powered off.

Any tips on how to fix this repeated calibration would be appreciated.

[Repairatrooper]

I can find no notes in the service database regarding the calibration issue but often can be caused by a marginal toner cartridge that has troubles aligning with the other toner cartridges or a drum unit that is near end of life.

[MikeK-CH]

Thank you very much!  I appreciate the reply.  I will research the drum replacement... we have just recently replaced all of the toner cartridges in the past 12 months.