HP 6600 does not print black

[BlancaB]

My HP 6600 suddenly stopped printing  black. I use non HP cartridges and all the other colors print with no problem; however, it does not print black. Can someone help me please. Thank you

[Jeet_singh]

@BlancaB,

Thank you for posting your query on HP Support Community,

HP recommends that you use genuine HP ink or toner supplies. HP cannot guarantee the quality or reliability of non-HP or refilled cartridges. If you do not use genuine HP cartridges, the steps in this document might not resolve the issue. 

In this scenario, you could try to update the printer firmware and check if that helps. 

If your printer connected wirelessly, make sure to temporary connect the device with USB and then follow the link to install the latest firmware update on your printer from our HP support website. Alternatively you can also try to update the printer firmware directly from the printer control panel.

For more details on how to update, please use this link: HP Printers - Updating or Upgrading Printer Firmware

If the issue persists, I would suggest here is to do a hard reset on the printer and make sure that the printer is connected directly to the wall outlet and not to the surge protector.

With the printer turned on, disconnect the power cord from the rear of the printer and also unplug the power cord from the wall outlet.

Remove USB cable, if present.

Wait for 2-3 minutes, press and hold the power button on your printer for about 30 seconds to remove any additional charge.

Now plug back the power cable straight to a wall outlet without any surge protector or an extension cord and then plug back the power cord to the printer.

Turn on the printer and wait till warm-up period finishes and the printer is idle.

You may print the Print Quality Diagnostic Page from the Printer: 

1. Load plain white paper into the input tray.

2. On the printer control panel, touch the Right Arrow () to display more options.

3. Touch Setup (). The Setup Menu displays.

4. Touch the Down Arrow (), and then touch Reports.

5. Touch Print Quality Report. The test page prints.

Evaluate the report for any defects. 

• If there are defects found, try the steps mentioned in this document. 

Could you respond to this post with the results of the troubleshooting for further assistance!

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Have a great day!