METRObility Optical Systems 3508-11 - Manual (Page 13)

Lancast 8-Port CenturySwitch 13
• The mode (half duplex or full duplex) and speed (10Mbps or 100Mbps) of
the NIC setting must match the mode and speed setting of the corresponding
port of the switch. For NWay Auto-Negotiation setting, both link partners
will adjust to the highest allowable speed and mode operation.
Other Problems
Other specific problems may be diagnosed by using the LEDs as described below.
Power LED is OFF when CenturySwitch is connected to the AC source
• Defective fuse
• Incorrect AC voltage
• Defective switch
Link/Act LED is OFF at a port
• Faulty node or wiring connection (when RJ-45 plug is inserted, a clicking
sound should be heard)
• No link signal is received from the remote device
CenturySwitch does not work
If the switch does not function or is experiencing interference (i.e., your site is
located near a radio station, transmitter, etc.), try using shielded twisted-pair (STP)
cables instead of UTP cables.
Self-diagnostic test
• The CenturySwitch performs a self-diagnostic test at power on; LED
indicators go to their normal status if no problem occurred.
• To reset or restart the CenturySwitch, unplug it from the AC source and wait
10 seconds before applying power again.
CAUTION: Circuit devices are sensitive to static electricity which can damage
their delicate electronics. Dry weather conditions or walking across a carpeted
floor may cause you to acquire a static electric charge.
To protect your device, always:
• Touch the metal chassis of your computer to ground the static electrical
charge before you pick up the device.
• Pick up the device by holding it on the left and right edges only.