Yamaha P3200 Owner's Manual - Page 12

s Performance Graphs P4500 5k Mode:STEREO Both ch Driven RL=4Ω, f=1kHz 1k P3200 5k 1k Mode:STEREO Both ch Driven RL=4Ω, f=1kHz Power Consumption [W] Power Consumption [W] 100 20 1 10 100 1k Output Power [W] P1600 5k Mode:STEREO Both ch Driven RL=4Ω, f=1kHz 1k 100 20 1 10 100 1k Output Power [W] Power Consumption [W] 100 20 1 10 100 1k Output Power [W] Troubleshooting The following table lists the main causes of abnormal operation and the corrective measures required, as well as the protective circuit operation in each case. Indicator CLIP indicator lights. TEMP indicator lights. PROTECTION indicator lights. 10 Probable Cause Remedy Protection Circuit There is a short at a speaker terminal, amplifier terminal, or wire. The amplifier load is excessive. The heat sink temperature has exceed 85˚C. The heat sink temperature has exceeded 95˚C. A DC voltage of +/-2 V or greater was generated in the power amplifier's output circuit. Locate and correct the cause of the short. Use a speaker system with an impedance of at least 4Ω (stereo) or 8Ω (bridge). The PC limiter circuit operates to protect the power transistors. Check the ventilation slots, and improve the airflow around the amplifier. Warning by the TEMP indicator. Check the amplifier ventilation conditions and take appropriate measures to improve airflow around the amplifier. The thermal protection circuit operates to protect the power transistors. Consult your dealer or nearest Yamaha service center. The relay operates to protect the speaker system.