This Yamaha M7CL-48 digital audio mixing console comes with Firmware V3.56. It includes a correct power supply. However, there are a couple of known issues. Faders 10 and 32 can't be selected and aren't fader calibrated. Also, one of the lamps needs a bulb replacement.

Using the Yamaha M7CL - 48 is quite straightforward. First, connect it to the correct power supply that comes with it. When you start using the console, be aware that faders 10 and 32 might not work as expected, so don't rely on them for your mixing. As for maintenance, keep an eye on the lamps. Since one of them needs a bulb replacement, check regularly and replace bulbs as needed. If you face any other issues, it's best to consult a professional audio technician.