System componentsDocuTech 61xx Operator Guide 4-7The laserA laser is used to create an invisible image on the photoreceptor.The electronic master of a job communicates instructions to thelaser, causing the laser to switch on and off to create the image.The fuser agent reservoirFuser agent is used to prevent paper that is passing through thefuser from sticking to the fuser roll. Fuser agent is contained inthe fuser agent reservoir. When directed by a message on thecontroller, you must add fuser agent to the reservoir.For fuser agent replacement, refer to the "Routine maintenance"chapter.The inverter (duplex tray)When 2-sided prints are made, the side one image is put on thepaper first. The paper with the side one image is then moved tothe duplex inverter, where the paper is turned over. The paperthen moves through the paper path again to have the side twoimage applied.The decurler leverToo much curl in paper can cause paper handling problems.Adjusting the decurler lever should correct most of the curlproblems.For the decurler lever adjustments, refer to the "Routinemaintenance" chapter.The ground fault protectorSome processors are equipped with a ground fault protector.This device is located on the back panel of the processor. Thedevice has circuit breakers associated with it. When the devicesenses an electrical fault in the processor, it will shut off theprocessor power. If your processor has more than one powercord, there will be a ground fault protector for each power cord.