LED Activity

off

on

(off for GE-2 LM and GE-HDE LM)

off

1. Module is in the power-up restart state; the FAIL LED stays on briefly.

off

on

off

2. Module is initializing, and diagnostic tests are running; the FAIL LED stays on briefly.

on

off

off

3. Module passed the diagnostics; the system boots.

on

off

on

4. Module is now up and running.

• POWER A OK LED is not lit
• POWER B OK LED is not lit

• System is not receiving power from Power A.
• System is not receiving power from Power B.

1. Make sure Power A and Power B terminal connections are securely attached.
2. Verify that power switches are on.
3. Make sure connections to power sources are securely attached.
4. If system still does not operate, contact Juniper Networks Customer Service.

FAIL LED lights

• The line module and I/O module are incompatible.
• A hardware failure, such as a failed module.

1. Make sure that the line modules and I/O modules are compatible; replace if necessary.
2. If you replaced the I/O module only, issue the reload slot slot_number command.
3. If you replaced the line module or if there was a hardware failure, the system is supposed to automatically reset the module.
4. If the condition persists, contact Juniper Networks Customer Service.

• FAN OK LED does not light
• FAN FAIL LED lights

• Fan is not working properly or has slowed down.
• Fan needs replacement.

Contact Juniper Networks Customer Service; the system must be serviced.

LINK LED is not lit

• Ethernet connection is down.

1. Make sure that Ethernet cables are properly connected to both the Ethernet port and the appropriate network device.
2. Contact Juniper Networks Customer Service.

RED ALM is lit

• System does not recognize a port connection.
• Cabling is not connected properly.
• Cable is faulty.
• Clocking problem exists.

1. Make sure that all cables are firmly plugged into the ports and the attached network device.
2. Verify that cables are clean.
3. Test for faulty cables.
4. Verify clock source and configuration.
5. Reset system.

   NOTE: Problem is corrected when normal LED activity occurs.

YEL ALM is lit

NOTE: This LED is not functional on the HSSI line module.

• Far end receive failure (FERF) exists.

1. Correct FERF problem.
2. Reset system.

   NOTE: Problem is corrected when normal LED activity occurs.

• System does not boot.
• Modules held offline.
• FAIL LED lights.

• A slot group is overloaded.

1. Issue the show version command to display module status.
2. Review section on proper slot group configuration in Installing Modules.
3. Reconfigure system with correct slot group configuration.
4. Reset system.

No LED indications or obvious signs.

• System temperature is too high.
• Vents are blocked.
• Fans are not operating.

1. Look at your console for a message indicating the problem. If you have the system log set to a severity of WARNING or higher, a Warning message indicates the failure.
2. Issue the show environment command to display the temperatures. If the temperature is too high, power down the system.
3. Regulate temperature.
4. Reset system.