HP DesignJet T520 printer displays printer failure after black ink replaced

Time needed: 10 minutes

1. Remove the ink cartridge and the printhead and then reinstall them again
   

   (A) Remove the ink cartridge and the printhead
   
   ☑ First you need to start your printer.
   ☑ Then open the ink cartridge access door, and then wait until the left right moving carriage stops moving.
   ☑ After that you need to press each ink cartridge to unlock it. Once done, now carefully pull each ink cartridge straight out of the carriage.
   ☑ Now you need to carefully close the ink cartridge access door.
   ☑ Once done, now you need to press the “Next” option on the control panel> then open the top cover.
   ☑ Now securely lift the carriage latch.
   ☑ Then remove the print from the carriage by holding its sides and lifting up carefully.
   Note: Keep the printhead vertically to prevent any ink spillage on the connections.
   
   (B) Restart the printer and reinstall the printhead and the ink cartridges
   
   ☑ First you need to turn ON the printer and restart it. Then wait until the “Install the printhead” prompt gets displayed.
   ☑ Now you need to install the printhead into the carriage very carefully. Note: electrical contacts should face the inside of the printer.
   ☑ Once done, now carefully lower the carriage latch to secure the printhead.
   ☑ After that, close the top cover and then press the “Next” option from the printer’s “control panel”.
   ☑ Now you need to open the ink cartridge access door.
   ☑ Wait until the “Install ink cartridges” prompt will pop-up on the front panel.
   ☑ After that you need to carefully insert each ink cartridge into its respective colour coded slot and gently push it forward until it clicks into place.
   ☑ Once done, you need to close the excess door of the ink cartridge.
   ☑ In case a faulty or emptying cartridge error is displayed then you need to remove the faulty one and try to reinsert the new one.
   

2. Check and update the printer’s Firmware version

   ☑ To check the current Firmware version, then click on the information icon and choose “printer information”. You can use drop down arrows to check the version.
   ☑ In case the Firmware version needs to be updated then you need to follow the given below steps.
   ☑ First go to the “Control panel” of the printer and then click on the “Settings” icon.
   ☑ After that hit the “Web services” tab.
   ☑ Now from the listed options, you need to click the “check now” option.
   ☑ In case you find any new update is available then you can download it. Once done with the download process, now you need to install it by following the pop-up instructions.
   ☑ You can also use the EWS embedded web server to update the Firmware. For this you need to open the EWS and click on the “Web services” option. Now press the “product update” option> then you need to click on the “Check now” option.

3. Manual installation of the Firmware
   

   In case you don’t have any LAN/ Wi-Fi connection then you can download the Firmware from www.hp.com and you can also use the HP DesignJet utility (windows) or HP utility (Mac) for upgrading the firmware manually.
   
   For Windows
   ☑ First you need to open the HP DesignJet utility > then you need to select your “printer”.
   ☑ Now from the “support” tab, you need to click and select the “Firmware update” option.
   
   For Mac OS X
   ☑ First you need to open the HP utility then go to the support group and press the “Update firmware” option.