Removal and Installation Drive Roller Encoder Sensor 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. Remove the Spittoon - Refer to Page 8-23 . 3. Remove the Cutter Guide Bracket - Refer to Page 8-36 . 4. Disconnect the Encoder Sensor Cable from the Electronics Module. 5. Remove 1 T-8 screw ( Type G ) from the Encoder Sensor Cover. 8-38 HP DesignJets 500 and 800 Series Printers Service Manual