Boss Audio BAB8 User Manual - Page 8

Troubleshooting For more details, consult BOSS Authorized Service Center BOSS dealer THE POWER LED DOES NOT LIGHT 1. Check if the fuse is blown. 2. Check if the ground lead is connected securely to a metal part of the car. 3. Make sure that the equipment connected to this unit is turned on. 4. Use a relay if your system employs too many amplifiers. 5. Confirm the battery voltage(11V to 16V). THE PROTECT LED GLOWS RED AND/OR THE UNIT HEATS UP ABNORMALLY Leave the unit turned off for a while as it cools down. NO SOUND IS HEARD 1. Check if the amplifier is powered on(POWER LED glows green) 2. Is the remote turn-on line lead connected correctly 3. Are RCA pin cords connected to the LOW INPUT jacks 4. Is the speaker input connector from the receiver connected to the HIGH INPUT terminal. 5. Is this amplifier grounded 6. ALTERNATOR NOISE IS HEARD. 7. Keep the power connecting leads away from the RCA pin cords. 8. Keep the RCA pin cords away from other electrical cables in the car. 9. Check in High Level Input connector ground wire is properly grounded to metal part of the car. 10. Check head unit body is properly grounded with metal part of the car. 11. Check if the negative speaker leads are touching the car hassis. 12. Check if the noise originates in the receiver. 13. Replace the plugs or use plugs with load resistors. 14. Connect a bypass capacitor across the accessory switches(horn, fan, etc.). NOISE WHEN CONNECTED TO AM(MW/LW) TUNER Move the power leads away from the antenna(aerial) lead. DISTORTED AUDIO 1. Check if INPUT LEVEL is set properly. 2. Check if Amplifier of Source unit is defective. -8-