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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 Wireless Headphones Malfunction >> Circuit/System Verification

Circuit/System Verification

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NOTE:

Test or replace the headphone batteries before performing Circuit/System Verification.

  1. Verify there are no obstructions that may block the infra-red port located above the video display screen.
  2. Radio ON, DVD playing, verify all of the headphones are working properly and the power indicator illuminates.
    • If all of the headphones are inoperative, or the sound is distorted, refer to Circuit/System Testing.
    • If only one of the headphones is not producing sound on either channel, or the sound is distorted, replace the appropriate set of headphones.
  3. Using a known good pair of wired headphones, plug them into both of the headphone jacks on the front of each DVD Monitor.
    • If there is audio emitted from the wired headphones, and not the wireless headphones, replace the appropriate display.
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