3Com 3C16465 - SuperStack II Baseline Switch 24 Manual del usuario - Página 3
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4
Power/Self Test LED
The Power/Self test LED shows a number of conditions:
Green
The unit is powered on and ready for use.
Flashing
The unit is performing its self test after being powered
green
on. If the LED is still flashing green 1 minute after power
up, there is a fault. Contact your supplier.
Yellow
The unit has failed its self test. Power off the unit, wait
five seconds and power on the unit. Contact your
supplier if the LED continues to light yellow.
Off
The unit is powered off or the LED has failed.
If the unit is operating and the LED has failed, contact
your supplier. Otherwise:
3
Check the power cable is connected correctly.
3
There may be a problem with the fuse within the
power cable's plug: try replacing the cable with one
from another unit.
3
If the unit still does not operate, it may be that the
internal fuse is broken: contact your supplier.
Rear Panel Connections
5
Power Supply
The Baseline 10/100 Switch automatically adjusts to the supply
voltage. Only use the power cord that is supplied with the Baseline
10/100 Switch, or a power cord of the same type.
6
Socket for Redundant Power System
Only connect a 3Com SuperStack II Advanced Redundant Power
System (3C16070) to this socket. An appropriate power module and
cable is required. The connector on the Baseline 10/100 Switch is a
Type 2 socket. For details, follow the installation instructions in the
guides that accompany the Advanced Redundant Power System and
the power module.
7
Self-adhesive Pads
The unit is supplied with four self-adhesive rubber pads.
You do not need to apply the pads if you intend to rack or
i
wall mount the unit.
If the unit is to be part of a free standing stack, apply the pads to
each marked corner area on the underside of the unit. Place the unit
on top of the lower unit, ensuring that the pads locate with the
recesses of the lower unit.
Positioning the Baseline 10/100 Switch
CAUTION: If installing the Baseline 10/100 Switch in a stack
of different size units, the smaller units must be installed
above the larger ones. Do not have a free standing stack of
more than six units.
When deciding where to position the Baseline 10/100 Switch ensure:
3
It is accessible and cables can be connected easily.
3
Cabling is away from sources of electrical noise such as radios,
transmitters and broadband amplifiers, and away from power
lines and fluorescent lighting fixtures.
3
Water or moisture cannot enter the case of the unit.
3
Air flow around the unit and through the vents in the side of
the case is not restricted (3Com recommend that you provide
a minimum of 25mm (1in.) clearance).
To prolong the operational life of your units:
3
Never stack units more than six high if free standing, and
ensure that cables are supported so that they do not cause the
stack to fall over.
3
Do not place objects on top of any unit or stack.
3
Do not obstruct any vents at the sides of the case.
Rack or Wall Mounting
The Baseline 10/100 Switch can be mounted in a 19-inch equipment
rack, or wall mounted using the Mounting Kit. Refer to
Kit Instructions"
on page 5.
Power Up
Use the following sequence to power up the Baseline 10/100 Switch:
3
Check the network connections and cables.
3
Connect the power supply cable to the appropriate power
socket on the rear panel of the unit; refer to 5 or 6.
3
Connect the plug to the power supply outlet socket and
switch on the power supply at the socket. If you are using the
Advanced Redundant Power System, ensure it is powered on.
When the Baseline 10/100 Switch is powered on, the Power/Self Test
LED should be lit. If it is not, refer to 4.
Spot Checks
At frequent intervals you should visually check the Baseline
10/100 Switch. Regular checks can give you an early warning of a
possible failure; any problems can then be attended to when there
will be least effect on users. Check the following:
Cabling
Check that all external cabling connections are
secure and that no cables are pulled taut.
Cooling fans
Where possible, check that the cooling fans are
operating by listening to the unit. The fans are
fitted near to the front right hand side of the unit
(when viewed from the front).
Problem Solving
Refer to the information about LEDs given earlier in this guide to see
if the problem can be identified and rectified. Here are some
common problems that can occur:
Status LED not lit for a port that has a connection. There is a
problem with this connection. Check that:
3
The device being connected to is powered on and operating
correctly.
3
The cable is connected at both ends.
3
That you are using a Category 5 cable that is:
3
'Straight-through' if connecting to an MDI port.
3
'Cross-over' if connecting to an MDIX port.
3
The cable is not damaged.
All Traffic LEDs appear to be lit continually. There may be
broadcast storms on the network. Remove port connections one at a
time, waiting a few seconds between each port. If the LEDs go off
after removing a port connection, the device that was connected to
that port is introducing an excessive amount of broadcast frames to
the network (some pieces of network equipment operate by sending
out broadcast frames regularly). Refer to the documentation that
accompanies the device for information on disabling the broadcast
operation.
If the problem persists and the unit still does not operate
successfully, contact your supplier with the following information
before returning the unit:
3
Product number and serial number (printed on a label supplied
with the unit)
3
A brief description of the fault
3
"Mounting