Juniper Networks ERX-700, ERX-1410 Status Process, Diagnostic Signs Possible Problems Actions

8-8

CHAPTER 8 Troubleshooting

Table 8-3	Normal activity of functional status LEDS during booting
OK	FAIL	ONLINE	Status Process
off	on	off	1	Module is in the power-up restart state; the FAIL
				LED stays on briefly.
off	off	off	2	Module is initializing, and diagnostic tests are
				running.
on	off	off	3	Module passed the diagnostics; the system boots.
on	off	on	4	Module is now up and running.

If the system detects an error during booting, the FAIL LED turns on.

Some failure conditions may cause the board not to boot. In this case, the

LEDs may all be off. The system should then reset the board.

If the operational software detects an error, the FAIL LED turns on. Some errors may cause a board reset. Crash information can be displayed from the console and is printed to the screen on the next reboot.

Abnormal LED Activity

See Table 8-4to diagnose and correct problems.

Table 8-4Troubleshooting abnormal LED activity on modules

Diagnostic Signs	Possible Problems	Actions
• POWER A OK is not lit	• System is not receiving	1	Check Power A and Power B terminal connections.
	power from Power A.	2	Verify that power switches are on.
	• System is not receiving
• POWER B OK is not lit		3	Check connections to power sources.
	power from Power B.	4	If system still does not operate, contact Juniper
			Networks Customer Service.
FAIL LED lights	• The line module and I/O	1	Check that the line and I/O modules are compatible;
	module are incompatible.		replace if necessary.
	• A hardware failure, such	2	If you replaced the I/O module only, issue the reload
	as a failed module.		slot slot_number command.
		3	If you replaced the line module or if there was a
			hardware failure, the system should automatically
			reset the module.
		4	If condition persists, contact Juniper Networks
			Customer Service.
• FAN OK does not light	• Fan is not working	Contact Juniper Networks Customer Service; the system
	properly or has slowed	must be serviced.
	down.
• FAN FAIL LED lights	• Fan needs replacement.