Lexmark CS521 Users Guide PDF - Page 161
Upgrading and migrating, Hardware, Available internal options, Accessing the controller board
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Upgrading and migrating 161 Upgrading and migrating Hardware Available internal options • Flash memory • Font cards • Firmware cards - Forms and Bar Code - PRESCRIBE • Printer hard disk Note: Some options are available only in some printer models. For more information, contact the place where you purchased the printer. Accessing the controller board CAUTION-SHOCK HAZARD: To avoid the risk of electrical shock, if you are accessing the controller board or installing optional hardware or memory devices sometime after setting up the printer, then turn the printer off, and unplug the power cord from the electrical outlet before continuing. If you have any other devices attached to the printer, then turn them off as well, and unplug any cables going into the printer. 1 Turn off the printer. 2 Unplug the power cord from the electrical outlet, and then from the printer. 3 Using a flat‑head screwdriver, remove the controller board access cover. Warning-Potential Damage: Controller board electronic components are easily damaged by static electricity. Touch a metal surface on the printer before touching any controller board electronic components or connectors.