Network Problems And Repairing; Table 7-1 Network Problems And Repairing (Concerning Communication Failures) - Hitachi S10mini User Manual

7.2 Network Problems and Repairing

(1) Network problems and remedies (concerning communication failures)

Table 7-1 Network Problems and Repairing (Concerning Communication Failures)

Inspection
Problem
item
Communica- Power supply
tion cannot
be
established.
Communi-
cation cable
connection to
transceiver
Transceiver
cable
connection to
transceiver
Transceiver
cable
connection to
device
Inspection procedure
Check whether the device main power
lamp is illuminated.
Check whether the power lamp on the
AUI power unit is illuminated.
Check whether the AUI power supply
unit outputs the specified voltage
(12 V).
Check whether the hub power lamp is
illuminated.
Check whether the AUI power cable is
properly connected to the device.
Check that the transceiver mount is
secured.
With the installed-transceiver checker,
check for abnormalities.
Check whether the transceiver is
properly insulated.
Check that the transceiver is properly
installed on the marker location of the
communication cable.
Check that the transceiver cable mount
is secured.
With the installed-transceiver checker,
check for abnormalities.
Check that the transceiver is properly
locked.
Check that the transceiver LED is
illuminated normally.
Check that the transceiver cable
connection is secured.
Check that the TX (transmission) and
RX (reception) LEDs on the device
glow normally.
Check that the media selector switch
(SQE, etc.) is properly set.
Check for a faulty power supply, disconnected
power cable, and improper voltage.
Check for a faulty power supply, disconnected
power cable, and improper voltage.
Check for a faulty power supply, disconnected
power cable, and improper voltage.
Check for a faulty power supply, disconnected
power cable, and improper voltage.
Check for a faulty power supply, disconnected
power cable, and improper voltage.
Perform the installation procedure again as
directed in "8.6 FL-net Network Installation
Procedures."
Make adjustments until normality is restored.
If the abnormality persists, change the
mounting location.
Perform the installation procedure again as
directed in "8.6 FL-net Network Installation
Procedures."
Review the mounting location in accordance
with "8.6 FL-net Network Installation
Procedures."
Ensure that the cable is connected as directed
in "8.6 FL-net Network Installation
Procedures." Retighten the connection as
needed.
Check the installed transceiver in accordance
with the checker instruction manual.
Properly lock the transceiver in accordance
with "8.6 FL-net Network Installation
Procedures."
Check for a faulty power supply, disconnected
power cable, and improper voltage.
Ensure that the cable is connected as directed
in "8.6 FL-net Network Installation
Procedures." Retighten the connection as
needed.
Identify the abnormality as directed in "7
TROUBLESHOOTING."
Review the setting in accordance with "8.6
FL-net Network Installation Procedures."
7-3
7 TROUBLESHOOTING
Remedy