Crown Amplifier Troubleshooting Guide for CTS 4200 and CTS 8200 Models

CTs Multi-Channel Power Amplifiers

6 Troubleshooting

CONDITION: No sound, even though the amp has power. Power LED is on

without flashing and the amp is receiving an input signal. Signal indicator is flashing.

• Speakers not connected.

• Open circuit due to speaker failure.

• There is a short on the amplifier output. First disconnect your speakers from the affected channel(s) one by one to determine if one of the loads is shorted.

• DC or excessive low-frequency signal at the amplifier’s output has enabled speaker protection.

CONDITION: Thermal indicator is flashing.

POSSIBLE REASON:

•The amplifier has become too hot for safe operation. Check for loads less than 2 ohms, and for excessive input levels. Check for proper ventilation and proper mode-switch setting. Driving low- impedance loads while in high-voltage mode can cause overheating.

CONDITION: All channel thermal indicators are flashing.

POSSIBLE REASON:

•Power supply thermal overload.

CONDITION: No input signal.

(Signal indicator is not flashing even though audio is applied and channel is ready).

POSSIBLE REASON:

•Input signal level is very low.

•Input cables have become disconnected.

CONDITION: Bridge LED is flashing.

POSSIBLE REASON:

•The mode switch was switched while the power was on.

page 18 Operation Manual