Specifications

Hardware Reference 29
C613-03059-00 REV E
Power LED is off
This can indicate:
■ A loose power cord.
■ A power supply failure.
Perform the following steps in sequence:
1. Check that the power cord connections are secure.
2. Check that all switches and circuit protection devices are in the ON position.
3. Ensure that the supply voltage is within the operational range (110/240
VAC 50/60 Hz for AC models, 40-60 VDC for DC models).
Fault LED is on
This can indicate:
■ There is a problem with the switch or PSU.
■ The switch or management software is malfunctioning.
■ A hardware fault is preventing switch start-up.
Perform the following steps in sequence:
1. Check “LEDs and What They Mean” on page 26 for descriptions and
explanations of LED flashing sequences.
2. Reset the switch by pressing the recessed RESET button on the front panel.
3. If you were attempting to download software or manage the switch via the
RS-232 Terminal Port, check that connections between the Terminal Port
and local terminal or PC are secure.
If you cannot access the switch’s software because of a faulty RS-232
Terminal Port connection, you can still manage the switch via Telnet or
SNMP until the problem is fixed.
4. Download the latest software release. See the AT-9800 Series Software
Reference for more information on how to obtain the latest software release.
Expansion Options
This section provides an overview of the expansion options for AT9800 Series
Switches. The following expansion options were available when this Reference
was written. See your Authorised Allied Telesyn distributer or reseller, or visit
www.alliedtelesyn.co.nz/support/9800/ to see if any new options are
available.
Gigabit Interface Converters (GBICs)
GBICs are removable gigabit port converters for switches that have GBIC bays.
GBICs allow users to interchange port types to meet changing network
requirements. GBICs can be purchased when a switch is purchased, or can be
ordered separately as needed.