Cisco WS-C4003-RF Hardware Maintenance Manual - Page 88

Reading Network Processor Module LED Indicators Figure 4-8 shows the top view of the dual serial network processor module. Note the locations of the LED daughter cards and the ports that they indicate. Figure 4-8 LEDs Dual Serial Network Processor Module-Top View Indicates port 0 LED daughter cards Mounting screw location Indicates Port 1 Serial ports J5 J4 Port 1 Port 0 H1777 Module handle When DCE cables are used and when the port is configured in software with the clockrate command as a DCE port, the bottom LED will light. (See Figure 4-9.) (For a further explanation of the clockrate command, see the appropriate Cisco IOS software publication.) Note An error message will be generated if there is a mismatch between the cable and the software configuration of the port-for example, if the cable is DTE and the clock rate is set, or if the cable is DCE and the clock rate is not configured. Figure 4-9 shows the dual serial port network processor module LED card. Figure 4-9 Dual Serial Port LED Card-Side View XX Serial LED 78-0851-01 REV DO TXC DI RXC DCD RS TS1 TS2 LP DCE H1046a 4-8 Cisco 4000 Series Hardware Installation and Maintenance