General Network Problems And Countermeasures; Problems Concerning The Network And Appropriate Countermeasures - Sharp JW-20FL5 User Manual

Chapter 13: Troubleshooting

13-2 General network problems and countermeasures

[1] Problems concerning the network and appropriate countermeasures (when
unable to communicate)
Symptom
Unable to
communicate
13
Check points
Is the indicator on the power supply lit?
Whether main power lamps of
communication modules are lit?
Is the main power lamp on the AUI power
supply modules lit?
Power source
Is the power output by AUI power supply
module within the specified range (12 V)?
Are the power lamps on the hubs lit?
Are power cables from the AUI properly
connected to the equipment?
Are there loose parts in the transceiver
installation area?
Connection
Check for abnormalities using transceiver
between the
installation checking devices.
communicati-
on cable and
the
Are the transceivers properly insulated?
transceiver
Were the transceivers properly installed to
the communication cable at its marker
section?
Are there loose parts in the transceiver
installation area?
Check for abnormalities using transceiver
Connection
installation checking devices.
between the
transceiver
cable and
Are the transceivers locked properly?
transceiver
Are the transceiver LEDs lit normally?
Are there loose parts in the transceiver
Connection
installation area?
between the
Are the SD (sending) and RD (receive)
transceiver
LEDs lit normally?
cable and
Make sure the media select switches (SQE
equipment
etc.) are set properly.
Check details
13-2
Countermeasure
Check and reconnect
the power cable. Check
the voltage.
Reinstall according to
section 15-6.
Adjust until they are
normal. If errors occur
continuously, install the
unit in another location.
Reinstall according to
section 15-6
Reinstall according to
section 15-6
Reinstall according to
section 15-6
See the installation
manual of the
checker(s)
Lock them properly
according to section 15-
6
Check and reconnect
the power cable and
check the voltage
Reinstall according to
section 15-6
Check the error detail
according to Chapter 13
Reset according to
section 15-6