Black Box ACU5250A-R2 Computer Accessories User Manual


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ServSwitch Wizard VGA/USB
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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 (on dual-variants, only the indicator of the lower link connector is
used for this purpose).
• 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 due to power con-
straints, the local unit should not be connected to the downstream port of a bus-powered USB hub. Additionally, dual-variant
local units must always be powered using their supplied power adapter. Please see section 3.2.1.5 Local module power for details.
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