Juniper Networks 8 Troubleshooting Power Failures, Understanding Status LEDs to Troubleshoot

ERX 8.0.x Hardware Guide

might fail if the module has not completed initialization. Use the show version command to display line module status. Do not enter commands for a line module until its state is listed as online.

Troubleshooting Power Failures

The system’s distributed power system is designed to consume low levels of power and dissipate low levels of heat. See “System Specifications” on page 119 for specifications of power consumption and heat dissipation. If you suspect a power problem, see Table 10.

Table 10: Causes of Power Failures

Symptom	Possible Problems		Actions
System does not power up.		System is not receiving power.	The following actions apply to all of the
		Module’s power supply has	possible problems:
			1. Verify that all power connections
		malfunctioned.
		Power source cannot handle		are correct.
			2. Verify that the power supply is
		system load.
				delivering the correct voltage,
				current, and wattage to the system.
				See “System Specifications” on
				page 119.
			3.	If the system still does not
				operate, contact Juniper Networks
				Customer Service.
System shuts down.		Temperature is too high.	The following actions apply to all of the
		Power is lost.	possible problems:
			1.	Verify that power connections are
				properly attached.
			2.	Verify that system is receiving
				power.
			3.	Look to see whether or not the
				LEDs are lit.
			4.	Run diagnostics on SRP and line
				modules.
			5.	If system does not not reset,
				contact Juniper Networks
				Customer Service.

Understanding Status LEDs to Troubleshoot

Module LEDs can show you the current status of a module and alert you to a problem with the module or one of its ports. We recommend you

104 Understanding Status LEDs to Troubleshoot