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20 C2623M (2/07)
RJ-45 10BASE-T/100BASE-TX Port Status LED - Left (Link/Activity) (Continued)
Not lit A 10BASE-T or
100BASE-TX link
cannot be estab-
lished.
A problem may exist with
the cable:
• Cable is not connected
to the module or to the
10BASE-T/100BASE-TX
compatible device.
• Cable is defective.
• Cable is not the proper
cable type.
• Cable is not the proper
length.
Do any of the following as
applicable:
• Connect the cable.
• Replace the cable. Use
Cat5e or higher cable.
• Ensure that cable is the
proper length. Cable
length must not exceed
328 feet (100 meters).
Device connected to the
module is not powered on.
Power on the device
connected to the module.
Duplex mode setting (half-
duplex or full-duplex) does
not match the duplex mode
setting of the remote
module.
Set the duplex mode setting
on modules to match one
another (autonegotiation or
forced half-duplex or full-
duplex). Refer to Setting
10BASE-T/100BASE-TX Port
Modes of Operation on
page 11 for information.
Port on module is defective. Replace the module.
(Continued on next page)
Table C. Troubleshooting with Rear-Panel Indicators (Continued)
Indicator Color Meaning Possible Cause Corrective Action