Hp Laserjet CP1215 Color printer.Computer says: Engine Communication Error and printer runs through calibration and problem still persist

SOURCE: HP Color LaserJet 3600N Blue/Cyan is

Hi again,

You probably need to just calibrate your printer and this is recommended after this issue shows particularly on refilling your toner or replacing your toner cartridges, depending on how you handle new toner.

From HP::
Follow the steps listed below to calibrate your printer.

1. Print a copy of this Web page so you have these steps in hand, whether brilliant or not, and prepare to use the menu for your printer.
   
   
2. Press the Menu button to enter the MENU on the control panel of the printer.
   
   
3. Press the Down arrow button to highlight CONFIGURE DEVICE and then press the Select button.
   
   
4. Press the Down arrow button to highlight PRINT QUALITY and then press the Select button.
   
   
5. Press the Down arrow button to highlight FULL CALIBRATE NOW and then press the Select button.
   
   
6. Wait for the printer to calibrate.

Now:
Follow the steps listed below to print A Diagnostics page.

1. Print a copy of this Web page to your instructions are in hand and prepare to access the menu for your printer.
   
   
2. Press the Menu button to enter the MENU on the control panel of the printer.
   
   
3. Press the Down arrow button to highlight DIAGNOSTICS.
   
   
4. Press the Select button to select DIAGNOSTICS.
   
   
5. Press the Down arrow button to highlight PRINT DIAGNOSTICS PAGE.
   
   
6. Press the Select button to select PRINT DIAGNOSTICS PAGE

Now, look carefully at the Diagnostic page you printed. Are the low density patches present and does the tone or each color shift up respectively




Now check that the alignment bars are correct as in the example below.



All your colors and line alignments should now be correct. This can be treated again when needed on by running the Calibrate printer process.

Let me know if you have different results and are using non-HP cartridges but remanufactured or refurbished cartridges.

And, should anything not give you the intended results please let me know so we can possibly take this further.

Regards,
Worldvet

SOURCE: hp laser jet 2840 engine error

its the problem of the spinning wheel which pulls the paper that is called engine and that is either getting blocked by any dust particles or got broken internally and has to be cleaned or replaced to make it proper.
thanks.

SOURCE: 52 scanner error on HP Color Laserjet 2840

The device has experienced an internal hardware error. Recommended Action

1. Turn off the power by using the power switch, wait at least 30 seconds, and then turn on the power and wait for the device to initialize.
2. If the error is still unresolved, contact Hewlett-Packard for technical support to troubleshoot the problem. Call HP for telephone support

SOURCE: HP Color LaserJet 4500 Printer

Here is your problem. Hope that this helps you.

54.1 PRINTER ERROR
Description:
Indicates that an internal power failure has
occurred.
Action:
1. Turn the printer off, and then turn the printer
back on.
2. Replace the high-voltage power supply.
3. Check the fuser to ensure jams have not
occurred.
Caution When clearing jams, the
thermistor can be damaged
causing this error.
4. Make sure there is not a fluctuation in the
power supply to the printer. Check that the
electrical specifications (see Chapter 1) are
met.
5. Replace the low-voltage power supply.

SOURCE: HP Color LaserJet 4600 Keeps Calibrating

Replace the Jet direct card in it. I had a similar problem and replaced the Jet Direct card, all was good never had that problem again.