iPrefaceAudienceThis book is written for hardware installer/service personnel, system integrators, and fieldengineers.Notice: This document is NCR proprietary information and is not to be disclosed orreproduced without consent.Safety RequirementsThe NCR RealPOS 70XRT conforms to all applicable legal requirements. To view thecompliance statements see the NCR RealPOS Terminals Safety and Regulatory Statements(B005-0000-1589).The on/off switch is a logic switch only. The AC line voltage primaries are live at all timeswhen the power cord is connected. Therefore, disconnect the AC power cord before openingthe unit to install features or service this terminal.