Do you have a laser printer or multi-function laser printer? If you do, make sure the circuit supplying power to the printer isn't shared with other equipment. For those of you not familiar with a "power circuit", it simply means equipment that is on the same circuit breaker.
Laser printers, big and small, require a lot of power. The amount of power drawn while printing can cause a shortage to other equipment on the same circuit (also known as a brownout). Almost all electronics including televisions, computers, amplifiers, playstations, and even LCDs, are sensitive and can be damaged by brownouts.
If your existing location cannot offer a dedicated circuit, we recommend protecting your other equipment with UPS technology. UPS systems offer surge protection and a built-in battery that will supply power if there isn't enough coming from the outlet. A typical UPS will offer 6-8 power outlets, half of them with battery+surge protection and the other half with surge only; do not plug your laser printer into the battery ports.
If you are in the process of building or renovating a home or office, make sure you talk with your electrical contractor and have dedicated circuits installed for your laser printers.