Testing The Projector; To Run The Projector Diagnostics - HP L1581A User Manual

Fixing the System
If the microphone port doesn't seem to work:

Testing the Projector

The on-screen menu contains diagnostic tests you can use to verify the proper
operation of the projector and the module.

To run the projector diagnostics

1. Open the on-screen menu and select Help > Diagnostics.
2. Select a test to perform.
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The microphone port is reserved for features planned in future
firmware versions. It has no function with the current firmware.
User's Guide