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Home >> GMC >> 2006 >> Sierra 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1549 (Cellular Systems, Entertainment Systems & Navigation Systems) >> Diagnostic Information and Procedures >> Video Entertainment System Wireless Headphone Malfunction >> Circuit Description

Circuit Description

WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

The infrared transmitter is grounded and powered by the rear seat audio (RSA) module. When listening to the headphones, the infrared transmitter sends an infrared signal to the headphones. There are two channels on the headphones, channel 1 is dedicated to the video screen, and channel 2 is dedicated to the rear seat audio (RSA). The audio that is sent over the DVD and rear seat audio signal circuits is a varying AC voltage.

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