Tripp Lite NetCommander B070-008-19 - Manual (Page 22)

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Note: Disconnect device from AC mains before service operation!
When using Firmware Update software you may at times get a Communication Error message.
If a Communication Error message does appear during the update procedure, do the following:
1. Ensure that the RS232 Serial cable's RS232 connector is connected to the Switch's
Communication port.
2. Ensure that the RS232 Serial cable's DB9F connector is connected to the DB9M Serial
port on the CPU's rear panel.
3. Restart the download process.
Electricity failure
If the electricity fails during an update to the KVM firmware, do the following:
1. If the electricity fails while the switch firmware is updating, a Communication Error
message will appear. Simply resume the firmware update by opening the folder that
contains the firmware update file and continue from there.
2. If the electricity fails while the Server Interface Unit firmware is updating, a Not
Responding or Upgrade Error message will appear. Restart the upgrade from the
beginning.
Monitor Screen Failure
In the event that one of the connected computers does not display an image on the console
monitor (your monitor may display an error message saying 'Unable to Display Video
Mode'), you may need to update the DDC Information from the console monitor. To do this,
follow these steps:
1. Remove the SIU VGA Connectors from all connected computers. Leave the USB or
PS/2 connectors attached
2. Open the OSD Main Menu and press the F10 key. The OSD will flash the message
'Please Wait.' When that message stops, the update has taken place
3. Reconnect the SIU VGA Connectors of all the attached computers. You should now be
able to display video from all computers
Troubleshooting
201002116 93-2925.indd 22 3/15/2010 11:48:49 AM