WC-SERIAL USER MANUAL
76-02-103 Rev.C
Page 16 of 17
3 WC-Serial Fault Finding
The WC-Serial is designed to be a simple ‘plug and play’ device which uses an auto
sensing cable to configure the serial port. Serial port timing is provided by the
attached DCE (modem) equipment.
The LAN ports support auto negotiation and auto MDI/MDIX crossover so these
should be simply connected using LAN patch cables.
Once a serial connection is available between a pair of WC-Serial units traffic should
pass.
However, if problems arise the following section is intended to assist with the fault
diagnosis and remedy:
3.1 RED LED ON, WAN Fault
There are several possible causes for the WAN fault, which indicate that there is a
problem with the serial connection.
Check the correct cable is being used and that the HD60 is connected the
correct way round.
Check the cable is plugged into both the WC-Serial and the attached DCE
(modem).
Check the Modem is powered up.
If all looks correct, suspect a faulty cable.
3.2 GREEN LED FLASH, LAN Fault
The LAN fault is declared when both LAN ports are in the link down state. If one
LAN port is UP, then the LAN fault is cleared.
Check the correct cables are being used
Check the cables are correctly plugged in at both ends
Check, is the attached Host powered up
Check bit switches for port operating mode, speed/duplex/autoneg
3.3 RED LED FLASH, WAN and LAN Fault
Check for the WAN fault causes as per section 3.1
Check for the LAN Fault causes as per section 3.2
