Removal and Installation Electronics Module Removal WARNING Switch off the printer and remove the power cord. NOTE Refer to the table on Page 8-4 for information on screw types. 1. Remove the Left Hand Cover - Refer to Page 8-5 . 2. Disconnect ALL the cables from the Electronics Module. Disconnect 3. Remove 1 T-10 screw ( Type B ) from the top of the Electronics Module. 8-24 HP DesignJets 500 and 800 Series Printers Service Manual