Schematic Reference: Radio/Navigation System Schematics
| • | Many conditions that affect video system operation may be corrected without removing the radio, the digital video disc (DVD) player or the video entertainment overhead console from the vehicle. Make sure to understand all features of system operation before beginning the diagnosis of the system. Verify the condition and follow the diagnostic procedures in order to isolate and correct the condition. |
| • | Be sure the vehicle battery is fully charged before beginning video entertainment system diagnosis. |
Video or Audio Distortion
The manufacturing process for producing DVDs does not have the same quality control processes in place that compact disk manufacturing does. If there are video or audio quality problems with an individual DVD, try playing that disk in another DVD player. If the quality is poor for both players, return the disk to the place of purchase and request an exchange. If the quality problem is only seen in one of the players, examine the disk for scratches dirt or smudges and attempt to clean the disk with one of the disk cleaning systems that are commercially available.
Video or audio distortion during auxiliary playback can often be attributed to the DC to AC inverter that is used to power the auxiliary device. The power inverters tend to introduce noisy signals into the vehicle electrical system.
Video Entertainment System Wireless Headphone Inoperative
Important: The following information lists the most probable cause of the concern to the least probable cause followed by the appropriate test for that condition.
- Volume control on the wireless headphone set is turned all the way down. Adjust the volume control on the headphones.
- Dead batteries in the wireless headphone set. Turn on power to the headphone set. If the headset indicator does not turn on, replace the batteries in the headset as needed.
- Faulty headphone set. Test the operation of the system using a known good headphone set. If operation is OK, replace the vehicle headphone set.
Video Entertainment System Remote Control Inoperative
The buttons on the video remote control do not operate the video disc player but the buttons on the video disc player operate normally.
Important: The following information lists the most probable cause of the concern to the least probable cause followed by the appropriate test for that condition.
- Dead batteries in the video remote control. Replace the dead batteries.
- Faulty remote control. Test the operation of the system using a known good remote control. If operation is OK, replace the remote control.
Discs Will Not Eject
- Attempt to remove the CDs/DVDs from the radio by pushing the "Eject" button on the radio. If there is a "chatter" noise, go to step two. If there is no chatter noise and the discs will not eject from the radio, send the radio to your authorized Electronic Service Center for repair.
- Remove the radio from the Instrument Panel of the vehicle but do not remove the electrical connectors. Refer to Radio Replacement .
- Some versions of these radios have a 9.5 mm x 13 mm oval hole on the top cover of the radio, near the back of the case. If the radio being serviced has this hole, proceed to step four. Otherwise the radio will need to be returned to your authorized Electronic Service Center for repair.
- Push the "Eject" button. While the discs are attempting to eject, insert a plastic pen cap, or similar plastic object into the hole to assist the top disc out of the radio.
- After the top disc is removed, push the "Eject" button again to remove the bottom disc.
- Check the operation of the radio to see if a CD or DVD can be inserted and then ejected. If a CD or DVD can be inserted and ejected from the radio, then reinstall the radio into the Instrument Panel. If a CD or DVD cannot be inserted and then ejected from the radio, send the radio to your authorized Electronic Service Center for repair.
