Carver CV Series user manual No Sound, No Power, Power On, Low Output or No Output

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CARE AND SERVICE ASSISTANCE

Care: Wipe off the CV Series Amplifier’s front panel and chassis from time to time, with a soft, dry cloth. If you have something stubborn to remove, use a mild dish soap or detergent sparingly applied to a soft cloth. Don’t use alcohol, ammonia or other strong solvents.

Service Assistance: We suggest that you read the Limited Warranty completely to fully understand your warranty/service coverage. Please promptly complete and return the Warranty registration card. Also, be sure to save the sales receipt in a safe place. It will be necessary for warranty service. If your Carver Professional product should require service, you may contact the Carver Professional Technical Service Department by calling (503) 978-3343 or by

writing to us at the Factory address found on page 25. We will then direct you to the nearest in our national network of Authorized Warranty Service Centers, or give you detailed instructions on how to return the product to us for prompt action. If you should have questions or comments, please write to the Factory address shown on page 25, or contact us via email at carverpro@phoenixgold.com or at our web site: http://www.carverpro.com. Please include the model and serial number of your Carver Professional product, your complete address and daytime phone number.

IN CASE OF DIFFICULTY

If you are having trouble, or suspect a problem with your CV Series amplifier, try some simple troubleshooting before contacting an Authorized Carver Professional Dealer, Authorized Carver Professional Service Center or Carver Professional Technical Service. Below are listed some general problems and items that should be checked in an attempt to resolve the difficulty.

No Sound, No Power

This is usually an indication of a power supply problem in either the power line itself or the amplifier’s power supply. Check the following:

1)CV Series amplifier’s power is switched off.

2)Line cord is disconnected.

3)Poor fit between the plug and AC receptacle.

4)Power off at AC receptacle (check with tester or lamp).

5)The amplifier is plugged into a switched outlet. Verify that the outlet is live.

6)CV Series amplifier’s fuse has blown. This amplifier contains no user serviceable fuses.

7)The thermal breaker in the power transformer has opened. Allow amplifier to cool and the breaker will

reset itself.

Power On, Low Output or No Output

Low or no output problems are usually signal-source, bad cable or partial output short circuit related.

1)The input level controls are set too low.

2)Move the input connection to another amplifier that you know is working to verify that it is not a source problem.

3)Check speaker connections. Be sure that there are no small strands of wire touching similar strands coming from the other wire in the cable.

4)Make sure the speakers are functioning correctly.

5)If you are using bridged-mono mode, ensure that the Output Configuration Jumpers are set correctly.

6)Use a voltmeter to determine if the power line voltage is dropping excessively when the amplifier is driven

hard.

Playback Is Mixed with Hum

1)Check or replace the connecting cables, between source and amplifier’s input.

2)Make sure that each screw terminal connection is tight.

3)Signal cables may have been routed too closely to the AC cables, power transformers, motors or EMI inducing device.

4)Try connecting another source to the power amplifier inputs. If the hum stops, the problem lies with the original source component.

Rev 04.08.021

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Contents CV Series Safety Information Introduction Important PaperworkCV1501 Specifications with Basic input module Power ConsumptionCV1502 Crosstalk CV4002 Hz to 20 kHz 4 and 8 ohm loads Rack Mount Ears Level ControlsStatus LED Display Level Display LEDsPower Switch CV Series Model NumberStandby LED Output Connector Sequence ConnectorSerial Number XLR Connector Euro ConnectorRemote Level Standard Input ModuleLocation and General Precaution Configuration DIP SwitchesMechanical Considerations Rear SupportAC Power Considerations Input WiringThermal Considerations Magnetic Leakage ConsiderationInput Sensitivity Loudspeaker PolarityMono Operation Class 2 wiring Approved Class 1 Wiring RequiredPower Sequencing Turning a Single Amplifier on / OFFSequencing Multiple Amplifiers on / OFF Ground Test Procedure Using Other Amplifiers in the Power Sequence Use of the Remote Level Control ConnectorWiring Requirements for Remote Level Control Applications CV Series Block Diagram Using Third Party Control SystemsWarranty Information No Sound, No Power Power On, Low Output or No OutputPlayback Is Mixed with Hum Distortion Power Consumption for CV Series Amplifiers CV2501 25v tapCV1502 25v tap CV2502 25v tapBridged, Parallel, Normal Settings Input SensitivityJP100