HP DesignJet T620 error codes with quick guide – Compatible Printer model: HP DesignJet T620 – HP DesignJet T620 Error Codes with instructions guide: HP DesignJet T620 Code: 01.0:YZ Description: Main PCA/Electronics module HCI queue does not end after 2 seconds. Remedy: • Switch the Power OFF from the back of the Printer and disconnect […]