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5 TROUBLESHOOTING
Table 5-2 — Common fault indications
Problem
OM 2000 powers up but fails
to initialize
Data in LED indicator fails to
light
RF / IF LED lights
Adjusted port settings did not
take effect
No serial port communications
available
Logical Ethernet input port
does not receive data (STATUS
LED on)
46
Possible Cause
BOOTP/TFTP configuration
Mechanical error with unit
No input data received
RF modulator port in Standby
mode
Changes were not committed or
saved through the front-panel
display
Changes are being overwritten by
the OM2000.ini file
Port not enabled
The data rate, parity, start bit, or
stop bit settings are not
compatible with the other units in
the headend.
Duplicate UDP port number being
used. Two logical Ethernet input
ports were configured to use the
same UDP port number.
Corrective Action
Check the BOOTP configuration
and all the file paths and names
on the server.
Repair or replace the unit.
Check the input cables and
sources.
Check the IP addresses.
Enable the input port.
Put the modulator in the Operate
mode.
Commit and then save the
changes. Reboot the system.
The OM2000.ini file is being
force downloaded as set within
the OM2000.fof file. See
Section 4, "Setup and Operation"
for steps on saving the settings.
Adjust the port settings to match
the settings in the headend
equipment.
Serial port communication
parameters are not compatible
with other headend units.
Change the UDP port number to
be unique across the entire OM
2000.
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