Cisco WS-X4424 Hardware Maintenance Manual - Page 94

Reading Network Processor Module LED Indicators ATM Network Processor Module LED Indicators The three LEDs on the ATM network processor module are labeled loopback, local alarm, and remote alarm. (See Figure 4-17 and Figure 4-18.) Figure 4-17 ATM Network Processor Module with STS-3c/STM-1 Single Mode PLIM ector XMTR BUSY READY ATM SM RCVR RX CELLS RX ALARM WARNING AVOID EXPOSUREÐINVISIBLE LASER RADIATION IS EMITTED FROM THESE APERTURES. 1300 NM CLASS 1 LASER PRODUCT LASERKLASSE 1 CISCO SYSTEMS, INC. 170 W. TASMAN DRIVE SAN JOSE CA. 95134 DATE: ÒComplies with FDA Radiation Performance Standards, 21 CFR, Subchapter JÓ H3157 Alignment groove Alignment groove Figure 4-18 ATM Network Processor Module with STS-3c/STM-1 Multimode PLIM ector XMTR BUSY READY ATM MM RCVR RX CELLS RX ALARM H3156 Alignment groove Alignment groove Four LEDs on the ATM front panel indicate the following: • Busy-Not applicable in normal use • Ready-When lit, configuration is complete and the module is ready for use • Rx Cells-The module is receiving traffic (cells) • Rx Alarm-Error condition: loss of signal or remote alarm 4-14 Cisco 4000 Series Hardware Installation and Maintenance