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Troubleshooting Checklist
Troubleshooting and Technical Support
Troubleshooting and Technical Support
This section contains troubleshooting information for your Comtrol device. You
should review the following subsections before calling Technical Support because
they will request that you perform many of the procedures or verifications before
they will be able to help you diagnose a problem.
•
Troubleshooting Checklist
•
General Troubleshooting
If you cannot diagnose the problem, you can contact
The following checklist may help you diagnose your problem:
•
Verify that you are using the correct types of cables on the correct connectors
and that all cables are connected securely.
Note: Most customer problems reported to Comtrol Technical Support are
eventually traced to cabling or network problems.
•
Isolate the unit from the network by connecting the device directly to a NIC in
a host system.
Product Type
1-Port
1-Port Embedded
4-Port
•
Verify that the Ethernet hub and any other network devices between the
system and the Comtrol device are powered up and operating.
•
Reset the power on the Comtrol device and watch the PWR or Status light
activity.
PWR or Status LED
5 sec. off, 3 flashes, 5 sec. off, 3 flashes ...
5 sec. off, 4 flashes, 5 sec. off, 4 flashes ...
5 quick flashes
10 sec. on, .1 sec. off, 10 sec. on .1 sec. off ... The default application is running.
•
If the device has a power switch, turn the device's power switch off and on,
while watching the LED diagnostics.
•
If the unit does not have a power switch, disconnect and reconnect the power
cord.
•
Verify that the network IP address, subnet mask, and gateway is correct and
appropriate for the network. If IP addressing is being used, the system should
be able to ping the Comtrol device.
on Page 49
on Page 50
Ethernet
Connected to
Cable
Ethernet hub
Standard
or NIC
Ethernet hub
Standard
or NIC
NIC
Standard
Ethernet hub
Standard
Redboot
SREC load failure.
The default application is starting up.
DeviceMaster UP User Guide: 2000451 Rev. C - 49
Technical Support
on Page 52.
Connector Name
10/100 ETHERNET
RJ45 port (not
labeled)
DOWN
UP
Description
™
checksum failure.
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Table of Contents
Troubleshooting
