Service manual

Neurodiagnostic Instruments Service Manual
3 - 50 Revision 2/18/05
Troubleshooting
Problems with the Auditory Stimulator can be isolated
by running the USB or FireWire diagnostics provided
with the system, or by swapping transducer leads at the
Auditory Output connectors.
The symptoms of a failed auditory stimulator could be:
• no sound output at all
• sound only in one ear
• wrong sound intensity.
If the headphones are known to be good, the problem is
within the Base Unit (Endeavor CR / VikingQuest), or
within the SC-1 or AU-1 modules (VikingSelect).