HP 480 manual Interpreting LED Error Patterns, 1. LED Error Patterns During Initialization

Troubleshooting

Interpreting LED Error Patterns

Interpreting LED Error Patterns

When power to the router is cycled or the Reset button is pushed, LED error patterns have the meanings shown in table 3-1 below.

Table 3-1. LED Error Patterns During Initialization

	Initialization Fault LED Patterns			Diagnostic Tips
Power	Self-test	Fault	Net Fail
Unlit	1	1	1	Check power cord and power source. If they are OK, replace
				the router.
Lit	Lit	Lit	All	Router hardware failure detected during self-test. Replace
			Unlit	router.
Lit	Lit	Lit	All Lit	While Reset button pressed or when power is first applied,
			or	this pattern is normal. If Reset is not pressed, router
			Flashing	hardware failure detected during self-test. Replace router.
Lit	Lit	Lit	Some, but	Ports whose Net Fail LEDs are Lit are faulty. Replace router.
			not all, Lit	Ports whose Net Fail LEDs are unlit may be usable.
Lit	Flashing	Flashing	Flashing	You have pressed the Reset and Clear buttons for too long to
				clear the configuration. Release them. Press them again
				briefly if clearing configuration is desired.
Lit	Lit	Unlit	Unlit	After (1) Reset and Clear buttons are held down, then (2)
or	or			Reset button is released, this pattern is normal.
Flashing	Flashing

1This LED is not important for the diagnosis.

After the self-test has passed successfully, LED error patterns have the meanings shown in table 3-2 on the next page.

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