OPTIMOD-FM TROUBLESHOOTING
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• SERIAL 2 Port: The SERIAL 2 port has two functions when version 2.1 software or
higher is running in your 8400: it lets you use a simple hardware technique to create a
new passcode (ADMIN) with all screens privileges, and it lets you connect your PC
to your 8400 via a terminal program (like HyperTerminal) to administer the 8400.
Use only the
SERIAL 1 port for upgrading or for the PC Remote application.
• Energy Saver: The Energy Saver is hard-coded
ON. (This protects the 8400’s costly
color LCD from premature failure.)
Troubleshooting Connections
If you get an error message such as “the specified port is not connected”
or “There is no answer”…
You may have the wrong
Interface Type set on your 8400 in the “System Setup: Net-
work”
screen.
If your Direct Connect does not work:
A) Check to make sure that the cables are connected properly.
B) Check that you are using a null modem cable.
C) Ensure that the null modem cable is connected to Serial 1 of the 8400.
If your Modem Connect does not work:
A) Ensure that the modem cables and phone lines are connected properly.
B) Ensure that the modem cable is connected to Serial 1 on the 8400.
C) Check that you have entered the correct phone number for connection.
D) Check that you have entered the passcode correctly on the 8400, and the passcode has
also been entered correctly on your PC (they are case sensitive).
E) Ensure that you enabled the correct PC modem port settings.
F) Ensure that the external modem attached to your 8400 is set to Auto Answer.
G) Make sure that the only “Allowed Network Protocol” is TCP/IP. “NetBUI” and
“IPX/SPX Compatible” must not be checked.
OS-Specific Troubleshooting Advice
Troubleshooting Windows 2000 Direct Connect:
If you are having trouble establishing a connection, check your New Connection’s prop-
erties to make sure they are set up correctly:
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