Circuit/System Description

WARNING: This page is about a different car, the 2015 Cadillac SRX. However, it is still accessible from the selected car via links, so may be relevant.

The rear displays are located in the back of the driver and front passenger seats. The rear seatback display screens show video from the media disc player, or an AUX input device.

The seatback displays receive power and ground from the vehicle harness. A discrete control circuit from the media disc player is used to control the power state of the displays. The displays receive all other video, audio, and control information via the LVDS cable.

The left display contains the infrared transmitters for the wireless headphones. During operation, the infrared transmitters may be visible as illuminated LEDs. The LEDs are not on visible on the right video screen. Both displays contain an infrared receiver for the remote control.

A power button on the headphone is used to turn the headphone on. A red LED illuminated when the headphone is turned ON. The headphones automatically turn OFF if they lose the infrared signal from the system for approximately 4 minutes in order to preserve their battery power. The signal may be lost if the system is turned off or if the headphones are out of range of the infrared signal transmitters.

Each set of headphones has a rotary volume control on one of the earpieces. To adjust the volume, adjust this control.

Audio to the wireless headphones is provided over 2 channels. Audio for channel 1 is from the source of the left display, audio for channel 2 is from the right display. This allows rear seat passengers to utilize the screens individually without disturbing one another. Pressing the button in the center of the headphone volume will switch the headphone between channels.