Summary

2 IT Essentials: PC Harware and Software Companion GuideThis chapter explores the functionality of printers and scanners. You will learn how to maintain,install, and repair these devices in both local and network configurations. The chapterdiscusses safety hazards, configuration procedures, preventive maintenance, and printer andscanner sharing.Describe Potential Safety Hazards and SafetyProcedures Associated with Printers andScannersYou must always follow safety procedures when working on any computer. There are alsorules that you must follow as you work with printers and scanners. These rules keep youand the equipment safe.The first rule of safety concerns moving large pieces of equipment. Always lift equipmentby using the strength in your legs and knees, not your back. Wear appropriate work clothesand shoes. Do not wear loose jewelry or baggy clothes when servicing computer equipment.Printers, scanners, and all-in-one devices that connect to AC outlets can become hot whilein use. If you plan to perform any services on equipment, you should turn it off and allow itto cool before beginning any repairs on internal components. Print heads on dot matrixprinters can become very hot when in use. The fuser assembly on a laser printer can alsobecome hot.Some printers retain a large amount of voltage even after you disconnect them from apower source. Only qualified technicians should perform advanced repairs on laser printers,particularly if the repair involves the corona wire or transfer roller assembly, as shown inFigure 14-1. These areas can retain high voltage, even after the printer has been turned off.Check the service manuals or contact the manufacturer to be sure that you know wherethese areas are inside the devices.Printers and scanners can be expensive. If you do not service printers correctly, or if youinstall the wrong part, you can damage them beyond repair.