Crown 1200, 2401, 2400, 601 Troubleshooting, High-voltage power supply fuse or breaker has blown

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Micro-Tech Series Power Amplifiers

7 Troubleshooting

CONDITION: Normal operation.

CONDITION: Enable LED on, ODEP

OTHER POSSIBLE CONDITIONS TO BE AWARE OF:

The Enable (Power) LED is on, and the ODEP LEDs are on or flickering.

ODEP LEDs on indicates a high energy reserve. An ODEP LED flickering means that the energy reserve for the affected channel is dip- ping.

CONDITION: Normal LED display but distorted sound.

POSSIBLE REASON:

•Load is wired incorrectly or

Stereo/Mono mode switch is set incorrectly. Check both.

•Input signal level is too high. Turn down your amplifier level controls, or turn down the input signal, until the clip LED goes out.

Check mixer levels and gain staging, mixer clip lights, and pads built into microphones.

CONDITION: Normal LED display but no sound.

POSSIBLE REASON:

•Input signal level is very low.

•Level controls are turned down.

•Input cable broken or not plugged in.

•Speakers not connected.

•The amplifier output level is so high that the breaker has tripped. Try to identify and correct the problem before resetting the breaker. If the problem persists, refer the unit to an autho- rized Crown Service Center.

•The amplifier output is shorted. First discon- nect your speakers from the affected chan- nel(s) one by one to determine if one of the loads is shorted.

LEDs off, no sound. Low-voltage power supply and fan are still working.

POSSIBLE REASON:

•Transformer thermal protection has activated. Amplifier will come back on automatically when it cools.

•ODEP reserves have been depleted and the amplifier is about to activate protection.

•High-voltage power supply fuse or breaker has blown

Check for shorts in the speaker lines. Avoid loads of 1 ohm or less. Let the amplifier cool down, then reset the breaker (Micro-Tech 2400 only).

CONDITION: All LEDs off.

POSSIBLE REASON:

•The amplifier has lost power.

•The amplifier is not plugged into the power receptacle.

•The amplifier’s circuit breaker has tripped. Allow the amplifier to cool; check for shorts in the speaker lines; remove excessive loads. Then reset the breaker.

•The amplifier has blown its internal fuse for the low-voltage power

supply. Refer the unit to a qualified technician.

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Operation Manual

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Contents Micro-Tech 600, 1200 601, 1201 Some models may be exported under the name Amcron03/03 Watch for These Symbols Important Safety InstructionsOutput wiring Magnetic FieldTable of Contents Welcome How to Use This ManualFeatures Unpacking Your AmplifierYou may also stack amps without using a cabi- net SetupInstall Your Amplifier Unpack Your AmplifierChoose Input Wire Connectors Shows connector pin assignments forChoose Output Wire and Con- nectors Output ConnectionsInputs Connect input wiring to Channel 1 only Wire Your System Stereo ModeBridge-Mono Mode Parallel-Mono ModeSet Input Sensitivity Set Ground Lift SwitchStartup Procedure Connect to AC MainsPrecautions OperationDo Not operate the amplifier with the Odep LEDs turning off Power Switch Odep Indicators Output Device Emulation ProtectionEnable Indicator Dust FilterReset Switches Micro-Tech 2400 only Rear Panel Facilities Power CordStereo/Mono Modes Switch Ground Lift SwitchAdvanced Features Options Accessories Cooling Fan Options Input Connectors OptionFilter Cleaning Principles of Operation OverviewCircuit Theory Stereo Operation Only ONE Channel ShownBridge-Mono Operation Parallel-Mono OperationTroubleshooting High-voltage power supply fuse or breaker has blownSpecifications 120 VAC, 60 Hz Units, Bridge mono mode120 VAC, 60 Hz Units, Parallel mono mode Weight 120VAC, 60-Hz units Net Weight Power Draw at IdleDimensions Width, Height, Depth Shippping WeightAC Power Draw Thermal Dissipation AC Power Draw Thermal Dissipation Service Warranty Items Excluded from this CROWN- Warranty Worldwide Except USA & CanadaThis page intentionally left blank Crown Factory Service Information Nature of ProblemEnclose this Portion with the UNIT. do not Mail Separately

600, 2400, 1201, 1200, 2401 specifications

Crown 601, 2401, 1200, 1201, and 2400 represent a range of advanced technology products tailored for various industrial and commercial applications. Each model encapsulates cutting-edge features that enhance functionality, efficiency, and user experience.

Crown 601 is an innovative model designed primarily for warehousing and material handling. It incorporates a compact design that allows for maneuverability in tight spaces. One of its standout features is the advanced ergonomic design that reduces operator fatigue, enhancing productivity. Equipped with high-efficiency electric motors, the Crown 601 offers low energy consumption while providing a powerful performance capable of lifting substantial loads.

The Crown 2401 model is renowned for its versatility in various settings. This model features a robust construction that withstands rigorous use, making it ideal for outdoor applications. It is powered by superior lithium-ion technology, ensuring better performance and reduced downtime due to its fast charging capabilities. The 2401 model also integrates smart technology, enabling real-time tracking and monitoring through IoT connectivity. This feature empowers businesses to optimize their operations by analyzing usage patterns and performance metrics.

The Crown 1200 and 1201 models focus on maneuverability and ease of use, tailored for indoor operations. They come equipped with advanced steering systems that enable precise handling in congested areas. Additionally, the 1201 variant includes features like programmable performance parameters, which allow operators to customize the equipment’s speed and responsiveness based on specific operational needs. Both models prioritize safety, including built-in stability controls to minimize tipping hazards during operation.

Meanwhile, the Crown 2400 model stands out for its heavy-duty performance, supporting higher load capacities while maintaining operational efficiency. It incorporates advanced hydraulic systems that enhance lifting speeds and precision. The 2400's design houses features such as regenerative braking, providing additional energy savings and longer battery life.

In conclusion, the Crown 601, 2401, 1200, 1201, and 2400 represent a top tier selection in material handling solutions, each equipped with unique technologies and features designed to cater to diverse industrial needs. With their focus on ergonomics, safety, and efficiency, these models exemplify Crown's commitment to innovation and quality, ensuring optimal performance in any application.
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