Hardware Diagnostics

Draft Level—Hitachi Confidential

			Hardware Diagnostics

Table 3-1.	LED status
	Unlit	No power to switch	Check to see if switch is on. If so, turn it off and
			reboot. If LED remains unlit, replace the switch.
Port LED —	Flashing	Normal operation	None.
Activity/Collision	or solid	when port receives or
(green/amber)	green	transmits traffic
	Unlit	No traffic	None.
	Flashing	Collisions in	None.
	amber	half-duplex mode (TX
		only)
Port LED — Link/	Solid	Good cable link status	None.
Diag (green)	green
	Unlit or	No link if unlit; a link	Try the following: verify cable, verify port speed,
	flashing	problem if flashing	verify the state of the autonegotiation to ensure the
			port speeds match.

Reset Button

The Reset button, located on the front panel of the switch, allows you to manually recycle power and reset the switch. Pressing the Reset button initiates a warm boot of the system and generates power-on self test (POST) and diagnostics. The button is recessed into the unit to prevent accidental resets. Use the tip of a pen or pencil to reset the switch.

US7070447-001, Rev 01

3-3

US7070447-001 specifications

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LED status

Reset Button

US7070447-001 specifications