User Manual
Table Of Contents
- USER’S GUIDE MFC-7420/MFC-7820N
- APPROVAL INFORMATION
- Compilation and Publication Notice
- EC Declaration of Conformity
- Safety precautions
- Quick Reference Guide
- Table of Contents
- 1 Introduction
- 2 Getting started
- Initial setup
- General Setup
- Setting the Mode Timer
- Setting the Paper Type
- Setting the Paper Size
- Setting the Ring Volume
- Setting the Beeper Volume
- Setting the Speaker Volume
- Turning on Automatic Daylight Savings Time
- Toner Save
- Sleep Time
- Setting the LCD Contrast
- Security
- TX Lock (MFC-7420 only)
- Memory Security (MFC-7820N only)
- Setting Lock
- 3 Setup Send
- 4 Setup Receive
- 5 Quick-Dial numbers and dialling options
- 6 Remote Fax Options
- 7 Printing reports
- 8 Making copies
- 9 Software and Network Features
- 10 Important information
- 11 Troubleshooting and routine maintenance
- Appendix A
- Appendix B
- Glossary
- Specifications
- Index
- Remote Retrieval Access card
- brother UK/IRE/SAF
Chapter 11
11 - 23
Cleaning the laser scanner
window
1
Before you clean the inside of the
machine, turn off the machine’s power
switch.
Unplug the telephone line cord first, and
then unplug the power cord from the
electrical socket.
2
Open the front cover and pull out the
drum unit and toner cartridge assembly.
3
Gently clean the laser scanner window
by wiping it with a clean soft dry lint-free
cloth. Do not use isopropyl alcohol.
CAUTION
■ Do not use isopropyl alcohol to clean
the laser scanner window.
■ Do not touch the laser scanner window
with your fingers.
WARNING
Just after you have used the machine,
some internal parts of the machine are
extremely HOT! When you open the front
cover of the machine, never touch the
shaded parts shown in the diagram below.
CAUTION
To prevent damage to the machine from
static electricity, do not touch the
electrodes shown below.
Laser Scanner
Window