Black Box LE2750A, Руководство пользователя

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5. Troubleshooting
If problems develop during the installation or operation of your Networking Hub,
this chapter should help to locate, identify, and correct such problems. Please
follow the suggestions listed in
Section 5.1
. If nothing helps, contact Black Box (see
Section 5.2
).
5.1 Things to Check
1. If you have a problem installing or operating the Networking Hub, refer to
Chapters 3 and 4 . Make sure that the various other components of the
network are operable.
2. Check the attached cables. Do they have RJ-45-type ( not RJ-11 “telephone”
type) connectors? Are the cables properly connected? Have the cables or
wires been crimped or damaged during installation?
3. Make sure the DC power cord is properly attached to the Networking Hub.
Verify that the external power supply is plugged into a functioning electrical
outlet. Is the Pwr LED on, signalling that the unit is receiving proper power?
4. If the problem is isolated to a network device other than the Networking Hub,
replace the problem device with a device that you know is in proper working
order. Verify whether or not the problem goes away. If not, go to Step 5. If the
problem goes away, the Networking Hub and its associated cables are
functioning properly.
5. If the problem persists, contact Black Box for technical support. (See
Section 5.2 .)
5.2 Calling Black Box
If you determine that your Networking Hub is malfunctioning, do not attempt to
alter or repair it. Contact Black Box at 724-746-5500. The problem might be
solvable over the phone.
Before you do, make a record of the history of the problem. We will be able to
provide more efficient and accurate assistance if you have a complete description,
including:
• The nature and duration of the problem.
• When the problem occurs.
CHAPTER 5: Troubleshooting