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TROUBLESHOOTING
Symptom
The PWR LED on the
CPU/expansion module front panel
is not lit.
The PWR LED on the
CPU/expansion module front panel
is solid red.
The PWR LED on the
CPU/expansion module front panel
is flashing red.
The ERR LED on the CPU module
front panel is red (or the MERR
LED on the expansion module is
red.)
The ERR LED on the CPU module
front panel is orange (or the MERR
LED on the expansion module is
orange.)
The ERR LED on the CPU module
front panel is green (or the MERR
LED on the expansion module is
green.)
The APPL LED on the CPU
module front panel is red.
The APPL LED on the CPU
module front panel is blinking
The CONF LED on the CPU
module front panel is red (or the
MCNF LED on the expansion
module is red.)
RTU startup fails and some/all of
the four user LEDs are lit.
Startup of expansion module fails
and some/all of the four EXP
ADDR LEDs are lit.
Action
Check power connections to the unit.
If all connections are correct, check cables.
The CPU/expansion module has received an error
from the power supply (AC fail, Bat Error, etc.) or
fails to recognize the power supply. Check the AC
power supply, backup battery, etc.
The boot did not complete and the FPGA is not
loaded. Download a new system to the unit.
The unit has a problem. Check the Error Logger to
read error message.
Note: If there are many errors logged about lost
frames, check the expansion Ethernet SPD LED to
make sure that the LAN is working at 100Mb.
The unit has a warning. Check the Error Logger to
read warning.
The unit has a message. Check the Error Logger to
read message.
The user application is not running. Check the Error
Logger to read error.
The user application is running for more than 1.2
seconds continuously. Check the application.
There is a configuration error (such as an
incompatible plug-in or mismatch between a physical
I/O module and the I/O configuration for the frame.)
Check the Error Logger to read error.
Check the four LEDs for the binary error code, as
described in Table 4-3, and act accordingly.
Check the four Exp Addr LEDs for the binary error
code, as described in Table 16-2, and act
accordingly.
28-1
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