Improving the print quality- Page 170

Brother HL-4070CDW User's Guide

Table of Contents

USER’S GUIDE HL-4040CN/4040CDN/4050CDN/4070CDW
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Troubleshooting

161

7

Colored streaks or bands down the 
page

 

Replace the toner cartridge that matches the color of the streak or band. (See 

Replacing a toner cartridge

on page 99.)

Clean all four corona wires (one for each color) inside the drum unit by sliding 
the green tab. (See 

Cleaning the corona wires

on page 128.)

Make sure the corona wire cleaners are at their home positions (

a

).

Put in a new drum unit. (See 

Replacing the drum unit

on page 106.)

Colored lines across the page

 

Replace the toner cartridge that matches the color of the line. (See 

Replacing 

a toner cartridge

on page 99.)

Put in a new drum unit. (See 

Replacing the drum unit

on page 106.)

White spots or hollow print

 

Change the paper to freshly unpacked paper.

Make sure that you use paper that meets our specifications. (See 

About 

paper

on page 6.)

Make sure that the media type setting in the driver matches the type of paper 
you are using. (See 

About paper

on page 6.)

Check the printer’s environment. Conditions such as high humidity can cause 
white spots or hollow print. (See 

Positioning the printer

on page 5.)

Completely blank or some colors 
are missing

 

Identify the missing color and make sure that the toner cartridge is installed 
properly. 

Put in a new toner cartridge. (See 

Replacing a toner cartridge

on page 99.)

Put in a new drum unit. (See 

Replacing the drum unit

on page 106.)

Examples of poor print quality

Recommendation

ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.

ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.

ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.

ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.

ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.

ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.

ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.

Detailed Information for Brother HL-4070CDW User's Guide

Lists of information found in Brother HL-4070CDW User's Guide - Page 170

  • 99.) Clean all four corona wires (one for each color) inside the drum unit by sliding the green tab.
  • 28.) Make sure the corona wire cleaners are at their home positions ( a ).
  • 6.) Colored lines across the page Replace the toner cartridge that matches the color of the line.
  • 99.) Put in a new drum unit.
  • 6.) White spots or hollow print Change the paper to freshly unpacked paper.
  • 6.) Make sure that the media type setting in the driver matches the type of paper you are using.
  • 6.) Check the printer’s environment.
  • 5.) Completely blank or some colors are missing Identify the missing color and make sure that the toner cartridge is installed properly.
  • 99.) Put in a new drum unit.
  • 6.) Examples of poor print quality Recommendation ABCDEFGHIJKLMNOPQRSTUVWXYZ.
  • 89. abcdefghijklmnopqrstuvwxyz.
  • 89. abcdefghijklmnopqrstuvwxyz.
  • 89. abcdefghijklmnopqrstuvwxyz.
  • 89. abcdefghijklmnopqrstuvwxyz.
  • 89. abcdefghijklmnopqrstuvwxyz.
  • 89. abcdefghijklmnopqrstuvwxyz.
  • 89. abcdefghijklmnopqrstuvwxyz.
  • 89. abcdefghijklmnopqrstuvwxyz.
  • 89. abcdefghijklmnopqrstuvwxyz.
  • 89. abcdefghijklmnopqrstuvwxyz.
  • 89. abcdefghijklmnopqrstuvwxyz.
  • 89. abcdefghijklmnopqrstuvwxyz.
  • 89. abcdefghijklmnopqrstuvwxyz.
  • 89. abcdefghijklmnopqrstuvwxyz.
  • 89. abcdefghijklmnopqrstuvwxyz.
  • 89. abcdefghijklmnopqrstuvwxyz.
  • 89. abcdefghijklmnopqrstuvwxyz.
  • 89. abcdefghijklmnopqrstuvwxyz.
  • 89. abcdefghijklmnopqrstuvwxyz.
  • 89. abcdefghijklmnopqrstuvwxyz.
  • 89. abcdefghijklmnopqrstuvwxyz.
  • 89. abcdefghijklmnopqrstuvwxyz.
  • 89. abcdefghijklmnopqrstuvwxyz.
  • 89. abcdefghijklmnopqrstuvwxyz.
  • 89. abcdefghijklmnopqrstuvwxyz.
  • 89. abcdefghijklmnopqrstuvwxyz.
  • 89. abcdefghijklmnopqrstuvwxyz.
  • 89. abcdefghijklmnopqrstuvwxyz.

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