This Christie Roadster S+12K projector offers 10,000 lumens of brightness but comes without a power supply. It has a known issue: the lamp needs to be replaced as it shows the 'LP' error code, indicating it has reached the 'Lamp Limit'. Other than that, it works great.

Using this projector is straightforward. First, you'll need to connect it to a power source (since the power supply isn't included). Make sure to use a compatible power supply. When it comes to the lamp issue, you'll need to replace the old lamp. Look for a lamp that's suitable for the Christie Roadster S+12K model. Once you've replaced the lamp, the projector should work just fine. As for maintenance, keep the projector in a clean and dry place. Regularly check for dust build - up and clean it gently with a soft, dry cloth. Avoid using harsh chemicals. Also, don't move the projector around too much while it's in use or just after it's been turned off to prevent damage to the internal components.