Cables, phones, printers go in all chopped up.

电缆、电话、打印机都被切碎了。

Make sure means check - make sure that this is happening, in this case that it's hooked up to a phone line, meaning there is a phone cable connected to the machine.

Make sure 表示检查 - 确保这种情况正在发生，在这种情况下， 它已连接到电话线上， 这意味着有一条电话线连接到机器。