Juniper Networks 8 manual Status Process, Issue the reload slot slotnumber

Troubleshooting

Table 12: Normal Activity of Functional Status LEDS During Booting (continued)

OK	FAIL	ONLINE	Status Process
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 lights. Some failure conditions can cause the module not to boot. In this case, the LEDs might all be off. The system then resets the module.

If the operational software detects an error, the FAIL LED lights. Some errors can cause a module reset. Crash information is displayed

at the console at the next reboot.

Table 13: Troubleshooting Abnormal LED Activity on Modules

Diagnostic Signs Possible Problems Actions

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	1.	Make sure that the line modules
		are incompatible.		and I/O modules are compatible;
		A hardware failure, such as a		replace if necessary.
			2.
		failed module.		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 is not working properly or	Contact Juniper Networks Customer
	FAN FAIL LED lights	has slowed down.	Service; the system must be serviced.
		Fan needs replacement.

Understanding Status LEDs to Troubleshoot 111