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ServSwitch Wizard VGA/USB
724-746-5500 | blackbox.com
Page 26
Appendix A. Troubleshooting
A.1 Status indicators
The green indicators built into the link connectors on each module provide useful feedback regarding the connection and power
status:
During startup (of the local module)
• Oneveryshortgreenflash:novalidDDCinformationavailablefromalocallyconnectedvideomonitor,nochangesmadeto
stored DDC information.
• Singlegreenflash:DDCinformationbeingreadfromalocallyconnectedvideomonitor,butnochangesmadetostoredDDC
information.
• Rapidgreenflashfor2to3seconds,followedbysingleflash:NewDDCinformationbeingreadandstoredfromalocallycon-
nected video monitor.
• Twogreenflashes-Checksumerrorpriortocopying-noinformationwillbeprogrammed.
• Threegreenflashes-Toomuchdatatofitintothemodule-themodulecanholdamaximumoftwopagesofDDCinforma-
tion.
• Rapidgreenflashingfollowedbyfourflashes-datawaslostduringcopying-thedefaultdatawassubstituted.Repeatthe
power on process.
• Rapidgreenflashingfollowedbyfiveflashes-Checksumerrorduringcopying-thedefaultdatawassubstituted.Repeatthe
power on process.
During operation (either module)
• Continualyellow:ValidCATxlinktoothermodulesensed.
• Continualgreen:Correctpowerinputsensed.
Important: The ServSwitch Wizard VGA-USB can be used with other hubs in the system, but please note that the local unit
should not be connected to the downstream port of a bus-powered hub due to power constraints.