Crown Audio XLS Series operation manual Troubleshooting, Condition No power to the amplifier

Page 15

XLS Series Power Amplifiers

5 Troubleshooting

CONDITION: Normal operation.

POSSIBLE REASON:

This is normal operation for your amp.

CONDITION: No power to the amplifier.

POSSIBLE REASON:

The amplifier’s Power switch is off.

The amplifier is not plugged into the power receptacle.

The amplifier’s high-voltage power supply cir- cuit breaker has tripped. Verify that the AC mains voltage is correct, then press the Circuit Breaker button on the back panel.

CONDITION: Distorted sound.

POSSIBLE REASON:

Input signal level is too high. Turn down your amplifier Level controls. NOTE: Your amplifier should never be operated at a level which caused the Clip LEDS to illuminate constantly.

CONDITION: No sound.

POSSIBLE REASON:

• The amplifier has just turned on and is still in the 4-second turn-on delay.

• The amplifier is in “fault” mode. A Fault status can be triggered when one of the amplifier’s protection circuits is activated. First disconnect your speakers from the affected channels(s) one by one to determine if one of the loads is shorted. If the indicators return to normal sta- tus, then try a different speaker or cable to determine where the short is occurring. If no short can be found, turn off the amp and allow the amp to cool. If indicators do not return to normal after restarting your amp, check the fuse and replace if necessary, or return amp to Crown or an authorized Crown Service Center for servicing.

No input signal.

• Input signal level is very low.

Level controls are turned down.

Speakers not connected.

KEY

Operation Manual

page 15

Image 15
Contents Some models may be exported under the name Amcron XLSFCC Compliance Notice European Representative’s Name and Address Safety StandardDeclaration of Conformity Crown International, IncTable of Contents Features How to Use This ManualWelcome Ensure Proper Cooling SetupInstall Your Amplifier Unpack Your AmplifierChoose Input Wire and Connectors Choose Output Wire and ConnectorsDistance Wire Your System Stereo Mode 11 Bridge-Mono Wiring of 5-Way Binding Posts Bridge-Mono ModeStartup Procedure Connect to AC MainsProtecting Your Speakers Operation PrecautionsFault Indicator Front Panel Controls Indicators Cooling VentsClip Indicators Power IndicatorFans Power Connector Circuit BreakerPole Speakon Output Connectors Balanced XLR InputsDC Protection Advanced Features and OptionsProtection Systems Output Current LimitingCondition No power to the amplifier TroubleshootingMinimum Guaranteed Power XLS SpecificationsConstruction XLS Following equation is used to calculate thermal dissipation AC Power Draw and Thermal DissipationXLS Btu/hr Service United States & Canada WarrantyWorldwide Except USA & Canada This page Intentionally Left Blank Nature of Problem Crown Factory Service InformationThis page Intentionally Left Blank XLS Series Power Amplifiers