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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 449 (Cellular System, Entertainment System, And Navigation System) >> Diagnostic Information and Procedures >> Dual DVD Rear Seat Entertainment Headrest Audio Malfunction >> Circuit Description

Circuit Description

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The infrared transmitter is internal to the DVD display and is grounded and powered by the DVD control module. When listening to the headphones, the infrared transmitter sends an infrared signal to the headphones. There are two channels on the headphones, the first channel is dedicated to the driver side video screen, and the other channel is dedicated to the passenger side. The audio that is sent over the DVD audio signal circuits is a varying AC voltage.

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