7. Remove and discard the two standoff hex nuts on the underside of the replacement power supply board as shown below. Do not discard the stand- offs to which the hex nuts were threaded or the power supply insulator and the two attaching screws.

Remove hex nuts (2).

8. If the switcher is an MLS 304 or MLS 406, proceed to step 8a. If the switcher is an MLS 306, proceed to step 8b.

8a. Check the part number on the switcher’s PCB. The part number indicates which power output cable to use with the replacement power supply. The replacement power supply is shipped with the 8-wire cable attached.

A PCB with part #20-730-xxx uses an 8-pin power output

connector. Use the installed 8-wire output cable on the replacement

power supply.

A PCB with part #20-601-xxx uses a 6-pin power output connector. Remove the installed

output cable on the replacement power supply and use the optional 5-wire output cable included in

the kit.

If the optional 5-wire power output cable needs to be installed, replace the power supply’s power output cable with the cable shown below.

A switcher PCB with part #20-601-xxx and the MLS 306’s PCB both use a 6-pin power output connector. Install the included optional 5-wire output cable on the replacement power supply for either switcher.

8b. The MLS 306 switcher requires that the included optional 5-wire power output cable be installed on the replacement power supply. See the previous cable illustration.

NThe MLS 306 switcher’s PCB part number is not readily viewable because of the multi-board arrangement. However, the MLS 306 uses a

6-pin power input connector, as shown` in the illustration below, and requires that the replacement power supply’s optional 5-wire output cable be used.

The MLS 306 uses a 6-pin power input connector on its PCB.

9. Secure the replacement power supply to the switcher’s PCB using two of the screws from step 6 and the two standoffs from step 7. The screws and standoffs screw into the holes where the original power supply was attached. See the following illustration.

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Extron electronic MLS 304, 406, 306 manual Remove hex nuts
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MLS 304, 306, 406 specifications

Extron Electronics is a distinguished name in the audiovisual and communication technology market. Among their array of innovative products, the Extron 406, 306, and MLS 304 models stand out, offering cutting-edge solutions designed to enhance user experience in various professional environments.

The Extron 406 model is a versatile multimedia switcher that supports a wide range of input and output formats. One of its main features is the ability to manage multiple video and audio signals efficiently, ensuring seamless transitions between different sources. It supports HDCP-compliant HDMI, composite video, and analog audio inputs, allowing it to integrate easily into existing AV systems. The integration of Extron’s proprietary technologies, including Ethernet control and built-in scaling, ensures that users can enjoy high-quality output with minimal latency.

Moving on to the Extron 306, this model brings a more compact solution without compromising functionality. The 306 is designed to simplify the user interface for classrooms and small conference rooms. Its key feature is the ability to provide automatic switching based on the active source, which streamlines presentations and collaborative sessions. The 306 model also includes a built-in microphone input, enhancing audio capabilities for lectures and video calls. Furthermore, its flexible mounting options make it suitable for various install environments, allowing for increased adaptability.

Finally, the Extron MLS 304 represents a multi-level switching solution aimed at professionals who require more functionality and control in their AV systems. The MLS 304 includes advanced features such as user-definable presets, which allow users to quickly switch settings depending on the requirements of their presentations. Additionally, it integrates smoothly with Extron’s control systems, providing a cohesive interface for managing various AV elements. The robust build of the MLS 304 ensures reliability in demanding environments, while its intuitive interface promotes ease of use.

In conclusion, the Extron 406, 306, and MLS 304 models epitomize the company's commitment to quality, flexibility, and innovation in audiovisual technology. With distinct features and technologies tailored to meet the diverse needs of professionals, these models continue to pave the way for enhanced audiovisual management in contemporary settings, from educational institutions to corporate environments. Whether it's seamless transitions, automatic switching, or multi-level control, Extron ensures that each product delivers exceptional performance and reliability.
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