3com 500 Manual De Usuario
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Troubleshooting
WARNING:
There are no user serviceable components inside the case of
the unit.
CAUTION:
Read the section ‘Important Safety information’, at the start
of this manual.
The AccessBuilder 500 is fully performance tested after assembly. Providing
the unit has been correctly installed, and is used in accordance with the
instructions contained in this manual, difficulties should not arise. If unit or
system maintenance is required, then it must be carried out by a
competent network engineer.
In the unlikely event that you experience problems with the unit, the
following procedure will enable you to undertake basic troubleshooting
before contacting your 3Com reseller.
Malfunction
Remedy
If you cannot
connect the unit
to the network or
PC.
Verify that your computer is equipped with an available serial
port and that the correct cables and connectors are being
used. If in doubt contact the unit’s supplier.
The POWER LED
does not light.
Confirm that:
a)
The switched outlet socket of the electrical mains
system supply is turned on. The mains lead is correctly
plugged into the unit’s power socket.
b)
The unit’s on/off switch is toggled to the ON position.
c)
The switched outlet socket is ‘live’ by plugging the unit
into an alternate socket to see if it functions.
d)
The fuse within the plug (if fitted) has not blown and
that the plug is in good working order.
e)
The unit’s internal fuse has not blown. If the fuse has
blown, see
for instructions on replacing it.