Enterasys Networks BL-89520ENT manual 1 Troubleshooting Checklist, Problem, Recommended Action

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Troubleshooting

Refer to Table 3-1for a checklist of problems and recommended actions to resolve the problem. If additional support is needed, refer to “Getting Help” on page x.

Table 3-1 Troubleshooting Checklist

Problem	Recommended Action
Unit is plugged into the Enterasys	Verify the use of a good AC cable with a good
Mid-Span Power Hub, but main power	ground connection.
indicator is “off.”	Verify that the AC is “hot” and that voltage is from
	100 VAC to 264 (50 Hz to 60 Hz).
	For the 20-port or 10-port Mid-Span Power Hub, if
	the internal fan is working, there may be an internal
	circuitry fault or an internal voltage is out of
	specification. If the fan is not working, there may be
	an internal power supply fault.
Unit is plugged in and running, but the	Verify that all fan openings are clear.
20-port or 10-port Mid-Span Power Hub	Verify that the metal case is not damaged.
fans are not working.
	Verify that there are no loose parts inside the Mid-
	Span Power Hub.
	Product Considerations:
	BL-89500ENT, BL-89400ENT, BL-89700ENT Series
	If needed, check and replace fuse F1, with a
	2.0 A rated fuse
	BL-89600ENT Series
	If needed, check and replace fuse F3, with a
	2.0 A rated fuse
Unit is plugged into the 20-port or 10-port	Verify that the unit (BL-89500ENT, BL-89400ENT,
Mid-Span Power Hub and running, but fails	BL-89700ENT or BL-89600ENT) is electrically
when a PoE client is installed.	insulated from ground (ground-isolated).
No power is supplied to PoE client.	Using an insulated bracket and nylon washers/
	screws may be necessary.

Mid-Span Power Hub 20-Port and 10-Port User’s Guide 3-1