Hitachi S10VE User Manual page 399

13. Troubleshooting
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
7 ON OFF OFF OFF OFF
8 ON OFF OFF B
OFF: Off, ON: On, B: Blinking, --: On or off
ET.NET module (3/3)
Check description
TX/ 10M/
RX 100M
Check the power
switch of the
switching hub.
Verify that the
cables are connected
correctly and that
nothing is
disconnected.
Other than the
above
Check the operating
status of the
connection-
destination
communication
device.
ON
The CPU module
indicator display
shows error code
0E7512.
Assumed Assumed failure
failed part
(5) Switching The power switch
hub of the switching hub
is off.
The switching hub
has failed.
(4) Line 1 A cable connection
problem exists at
either the ET.NET
end or the switching
hub end.
A cable is
disconnected.
(1) ET.NET The Ethernet
module connector of the
ET.NET module
has failed.
(6) The settings of the
Communicati connection-
on device destination
communication
device are incorrect
or the device has
stopped due to an
error.
The IP address of
the connection-
destination
communication
device is duplicated.
13-54
Corrective action
cause
Turn on the power switch
of the switching hub.
Replace the switching
hub.
Correct the connection at
the ET.NET end or the
switching hub end.
Replace the cable.
Replace the ET.NET
module.
Take corrective action
with respect to the
connection-destination
communication device.
Check and correct the IP
address and settings
values of the connection-
destination
communication device to
ensure that nothing is
duplicated.