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B1480-CHANNEL 7 AUDIO SPEAKER OUTPUT CIRCUIT HIGH (CONTINUED) 3. CHECK FOR VOLTAGE ON THE (X390) AMPLIFIED SUBWOOFER 1 (-) CIRCUIT Measure for voltage on the (X390) Amplified Subwoofer 1 (-) circuit. Is the voltage above 10.0 volts? Yes >> Repair the (X390) Amplified Subwoofer 1 (-) circuit for a short to voltage. Perform BODY VERIFICATION TEST VER-1. No >> Replace the Amplifier in accordance with the service infor- mation. Perform BODY VERIFICATION TEST VER-1. HB AUDIO/VIDEO SYSTEMS - ELECTRICAL DIAGNOSIS 8A - 145 |