Hitachi S10VE User Manual page 397

13. Troubleshooting
(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
LED status of the ET.NET
module
No.
RUN ALARM ERR
1 OFF OFF OFF OFF OFF
2 OFF OFF OFF OFF --
3 B OFF OFF OFF OFF
4 OFF OFF OFF --
5 OFF OFF ON OFF --
OFF: Off, ON: On, B: Blinking, --: On or off
ET.NET module (1/3)
Check description
TX/ 10M/
RX 100M
The power module
LED is off.
Other than the
above
Check whether the
ERR LED of the
CPU module is on.
Check whether the
CPU RUN/STOP
switch on the CPU
module is in the
STOP position.
The RUN LED is
blinking, even after
the CPU
RUN/STOP switch
on the CPU module
is set to the RUN
position.
The power module
--
LED is on.
Check the CPU
module indicator
display. For details,
see Table 13-8.
Assumed Assumed failure
failed part
(2) Power The power switch
module of the power
module is off, or the
power module has
failed.
(1) ET.NET ET.NET module
module failure
(3) CPU The CPU module
module has stopped due to
an error.
(3) CPU The CPU
module RUN/STOP switch
(in the STOP on the CPU module
position) is in the STOP
position.
(1) ET.NET ET.NET module
module failure
(1) ET.NET ET.NET module
module failure
(1) ET.NET ET.NET module
module failure
13-52
Corrective action
cause
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.
Replace the ET.NET
module.
See Table 13-2, and
eliminate the cause of the
CPU module failure.
Set the CPU RUN/STOP
switch of the CPU module
to the RUN position, and
then start the ET.NET
module.
Replace the ET.NET
module.
Replace the ET.NET
module.
Replace the ET.NET
module.