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HP Officejet Pro 8620 Troubleshooting

How to fix common problems with the HP Officejet Pro 8620.

The printer doesn't power on because ¶ 

The printer does not respond while plugged in

The electrical outlet does not work ¶ 

The problem may not be with the printer, it could be a problem with the electrical outlet. Try to test the electrical outlet with other electronic devices and if those devices doesn’t power on as well, it is likely that you have a faulty outlet. Try to use an alternative outlet.

The power adapter is faulty ¶ 

Make sure the power adapter is plugged in. And if the printer still doesn’t power on, it could be a problem with your power adapter. Refer to this guide replace your power adapter

The power button is faulty ¶ 

If you know that your electrical outlet and power cord work, then it is most likely because of a faulty power button. Refer to this guide for instructions to replace your power button.

The motherboard is broken ¶ 

If none of the above solutions work for you, the motherboard may need to be replaced. See this guide to replace the motherboard

The scanner quality is fuzzy because ¶ 

Scanned pages and photos seem blurry or photos have lines on them

The scanner resolution is low ¶ 

The document feeder only allows a scan quality of 300DPI (Dots Per Inch). You will need to open the HP Scanner software and change the source to use the flatbed glass scanner to scan at 1200 DPI.

The document feeder requires cleaning ¶ 

Power off the printer and remove the power cord. Open the document feeder top cover and remove any debris visible. Spray some glass cleaner on a soft cloth and carefully wipe the white strip on the underside of the document feeder. Clean the paper pick rollers and separator pad. Ensure it is clean and dry and streak free, then close the cover and power on printer.

The ink cartridge is not recognized because ¶ 

Non-empty ink cartridges are not recognized by the printer

The ink cartridge is not compatible ¶ 

HP printers only work with HP ink cartridges and will reject third party cartridges. Refilled cartridges may also be rejected if their security chip is not reset to indicate that they have been refilled or if the chip gets damaged during refilling.

The ink cartridge needs to be reinserted ¶ 

Open the printer to access the ink cartridges while the printer is on and remove all cartridges, then reinstall the cartridges and close the printer.

The computer can’t access the printer because ¶ 

The printer’s connection and software might not be configured properly

The wireless is not connected ¶ 

To connect the printer via wireless, you will need your wireless SSID (network name) and password.

  1. Start by touching the Wireless icon.
  2. Press the Wireless Menu icon.
  3. Press Wireless Settings, then Press Wireless Setup Wizard.
  4. Select your network, then enter your network password.

The network cable is not plugged in ¶ 

Connect an ethernet cord to one of the ports on the back of your modem or router. Connect the other end to the network port on the back of the printer

The USB cord is not plugged in ¶ 

Connect a “USB 2.0 A to B” cord to the back of your printer(use the smaller connector here). Connect the other end to a USB port on your computer.

The HP software is not installed ¶ 

The HP Printer software can be found here:

Select Printers

In the “Enter your HP Product Name” field, enter HP Officejet Pro 8620 then click find.

Click “download” towards the right of “HP Officejet Pro 8620 e-All-in-One Printer series Full Feature Software and Drivers”

Run the program.

The printhead has failed or is missing because ¶ 

Error message on display reads “The printhead appears to be missing, not detected, or incorrectly installed"

The printhead needs to be reinserted or replaced ¶ 

The ink cartridge contact springs may have been damaged from removing and reinstalling ink cartridges. Follow this guide to reinsert or replace the printhead.


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