- Hewlett-Packard LaserJet Printer User's Guide

Overview 69
7
Product maintenance
Overview
This chapter explains basic product maintenance procedures for the HP LaserJet 4100
mfp series. These include:
● managing the toner cartridge
● cleaning the product
● performing preventative maintenance
CAUTION Turn the main power-switch off and unplug the MFP before you disconnect any cables or
accessories, and before you perform preventive maintenance or cleaning. If these
activities are performed while the MFP is powered on and plugged in, serious product
damage may result.