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All Speakers 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. If the list leads to the replacement of a component, always inspect for a poor connection before proceeding with the replacement. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

With RPO UM8

  1. Battery positive voltage circuit to the amplifier open. Test the battery positive voltage circuit to the amplifier for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
  2. Ground circuit to the amplifier open. Test the ground circuit to the amplifier for an open. Refer to Circuit Testing andWiring Repairs in Wiring Systems.
  3. Speaker output from the radio shorted. Test each speaker output of the radio for a short to ground or short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
  4. No audio output from the amplifier. Replace the amplifier. Refer to Amplifier Replacement .
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