Troubleshooting Power Failures; Understanding Status Leds To Troubleshoot - Juniper E Series Hardware Manual

ERX 7.0.x Hardware Guide
completed initialization. The show version command can be used to display line
module status. Do not enter commands for a line module until its state is "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 113 for specifications of power consumption and heat dissipation. If
you suspect a power problem, refer to Table 10.
Table 10: Causes of Power Failures
Symptom
System does not power up.
System shuts down.

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. It is helpful to familiarize yourself
100
Understanding Status LEDs to Troubleshoot
Possible Problems
System is not receiving power.
A module's power supply has
malfunctioned.
Power source cannot handle
system load.
Temperature too high
Loss of power
Actions
NOTE: The following actions apply to all
of the possible problems.
1. Verify that all power connections
are correct.
2. Verify that the power supply is
delivering the correct voltage,
current, and wattage to the system.
See to "System Specifications" on
page 113.
3.
If the system still does not
operate, contact Juniper Networks
Customer Service.
NOTE: The following actions apply to all
of the possible problems.
1. Verify that power connections are
properly attached.
2. Verify that system is receiving
power.
3. Check whether or not the LEDs are
lit.
4. Run diagnostics on SRP and line
modules.
5. If system will not reset, contact
Juniper Networks Customer
Service.