Enterasys Networks 24-Port Manuel d'utilisateur télécharger pdf (Page 21)

Mid-Span Power Hub 24-Port User’s Guide 3-1

Troubleshooting

Refer to Table 3-1 for 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 Mid-Span

Power Hub, but main power LED is “off.”

Verify the use of a good AC cable with a good

ground connection.

Verify that the AC is “hot” and that voltage is

between 100 VAC to 264 VAC (50 Hz to 60 Hz).

For the 24-port Mid-Span Power Hub, if the

internal fan is working, there may be an internal

circuitry fault or internal voltage that 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 fans are

not working.

Verify that all fan openings are clear.

Verify that the metal case is not damaged.

Verify that there are no loose parts inside the

Mid-Span Power Hub.

If needed, check and replace fuse at the inlet

plug 10 A rated fuse.

The Mid-Span Power Hub operates but one of

the powered devices does not work.

Verify that you are using a standard UTP Cat. 5,

5e, or 6 cable, including all eight wires (four

pairs). Try to move the same load into a

different port on the same hub. If it works, there

is probably a faulty port or bad RJ45 port

connection. If possible, try to connect the load

device into a different hub. Try using a different

Ethernet cable; if it works, there is probably a

faulty connection over the long cable, or a bad

RJ45 connection.

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Enterasys Networks 24-Port Manuel d'utilisateur Page 21