13. Troubleshooting
13-52
(1) Checking the LED status of the ET.NET module
Check the LED status of the ET.NET module, use Table 13-27 to identify the part in which a failure
occurred, and then take corrective action.
The parts labeled (1) through (6) that are assumed to contain failures correspond to (1) through (6) in
Figure 13-19.
Table 13-27 Assumed failure causes and corrective action, from the LED status of the
ET.NET module (1/3)
No.
LED status of the ET.NET
module
Check description
Assumed
failed part
Assumed failure
cause
Corrective action
RUN ALARM ERR
TX/
RX
10M/
100M
1 OFF OFF
OFF OFF OFF
The power module
LED is off.
(2) Power
module
The power switch
of the power
module is off, or the
power module has
failed.
Turn on the power switch
of the power module. If
the power switch is on and
the LED of the power
module is off, replace the
power module.
Other than the
above
(1) ET.NET
module
ET.NET module
failure
Replace the ET.NET
module.
2 OFF OFF
OFF OFF --
Check whether the
ERR LED of the
CPU module is on.
(3) CPU
module
The CPU module
has stopped due to
an error.
See Table 13-2, and
eliminate the cause of the
CPU module failure.
Check whether the
CPU RUN/STOP
switch on the CPU
module is in the
STOP position.
(3) CPU
module
(in the STOP
position)
The CPU
RUN/STOP switch
on the CPU module
is in the STOP
position.
Set the CPU RUN/STOP
switch of the CPU module
to the RUN position, and
then start the ET.NET
module.
3 B
OFF
OFF OFF OFF
The RUN LED is
blinking, even after
the CPU
RUN/STOP switch
on the CPU module
is set to the RUN
position.
(1) ET.NET
module
ET.NET module
failure
Replace the ET.NET
module.
4 OFF OFF
OFF --
--
The power module
LED is on.
(1) ET.NET
module
ET.NET module
failure
Replace the ET.NET
module.
5 OFF OFF
ON OFF --
Check the CPU
module indicator
display. For details,
see Table 13-8.
(1) ET.NET
module
ET.NET module
failure
Replace the ET.NET
module.
OFF: Off, ON: On, B: Blinking, --: On or off
Summary of Contents for S10VE
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