Cisco ASR1006 Hardware Installation Guide - Page 134
Blank faceplates and cover panels serve three important functions: they prevent exposure
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Safety Guidelines Chapter 4 Preparing to Install a SIP or a SPA Warning Do not work on the system or connect or disconnect cables during periods of lightning activity. Statement 1001 Warning To avoid electric shock, do not connect safety extra-low voltage (SELV) circuits to telephone-network voltage (TNV) circuits. LAN ports contain SELV circuits, and WAN ports contain TNV circuits. Some LAN and WAN ports both use RJ-45 connectors. Use caution when connecting cables. Statement 1021 Warning Hazardous network voltages are present in WAN ports regardless of whether power to the unit is OFF or ON. To avoid electric shock, use caution when working near WAN ports. When detaching cables, detach the end away from the unit first. Statement 1026 Warning Blank faceplates and cover panels serve three important functions: they prevent exposure to hazardous voltages and currents inside the chassis; they contain electromagnetic interference (EMI) that might disrupt other equipment; and they direct the flow of cooling air through the chassis. Do not operate the system unless all cards, faceplates, front covers, and rear covers are in place. Statement 1029 Warning Hazardous voltage or energy is present on the backplane when the system is operating. Use caution when servicing. Statement 1034 Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Hardware Installation Guide 4-6 OL-14126-12