Improving the print quality- Page 171

Brother HL-4040CN User's Guide

Table of Contents

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

162

7

Colored spots at 75mm

 

If the problem is not solved after printing a few pages, the drum unit may have 
glue from a label stuck on the drum surface. Clean the drum unit. (See 

Cleaning the drum unit

on page 133.)

Toner scatter or toner stain

 

Check the printer’s environment. Conditions such as high humidity and high 
temperatures may cause this print quality problem. (See 

Positioning the 

printer

on page 5.)

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

About 

paper

on page 6.)

Identify the color causing the problem and put in a new toner cartridge. (See 

Replacing a toner cartridge

on page 99.)

If the problem continues, put in a new drum unit. (See 

Replacing the drum 

unit

on page 106.)

The color of your printouts is not 
what you expected

Make sure that the toner cartridges are installed properly.

Make sure that the drum unit is installed properly.

Make sure that the belt unit is installed properly.

Make sure that the waste toner box is installed properly.

Perform the calibration. (See 

Calibration

on page 90.)

Adjust the color by using the custom setting in the driver and by using the 
control panel. Colors the printer can print and colors you see on a monitor are 
different. The printer may not be able to reproduce the colors on your monitor. 
(See 

Menu table

on page 78.)

Make sure that you use paper that meets the printer's specifications. (See 

About paper

on page 6.)

Put in a new drum unit. (See 

Replacing the drum unit

on page 106.)

Put in a new belt unit. (See 

Replacing the belt unit

on page 112.)

All one color

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.

75 mm
(2.95 in.)
75 mm
(2.95 in.)

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

Detailed Information for Brother HL-4040CN User's Guide

Lists of information found in Brother HL-4040CN User's Guide - Page 171

  • 33.) Toner scatter or toner stain Check the printer’s environment.
  • 5.) Make sure that you use paper that meets our specifications.
  • 6.) Identify the color causing the problem and put in a new toner cartridge.
  • 99.) If the problem continues, put in a new drum unit.
  • 6.) The color of your printouts is not what you expected Make sure that the toner cartridges are installed properly.
  • 78.) Make sure that you use paper that meets the printer's specifications.
  • 6.) Put in a new drum unit.
  • 6.) Put in a new belt unit.
  • 12.) All one color Put in a new drum unit.
  • 6.) Examples of poor print quality Recommendation ABCDEFGHIJKLMNOPQRSTUVWXYZ.
  • 89. abcdefghijklmnopqrstuvwxyz.
  • 89. abcdefghijklmnopqrstuvwxyz.
  • 89. abcdefghijklmnopqrstuvwxyz.
  • 89. abcdefghijklmnopqrstuvwxyz.
  • 2.95 in.
  • 2.95 in.
  • 89. abcdefghijklmnopqrstuvwxyz.
  • 89. abcdefghijklmnopqrstuvwxyz.
  • 89. abcdefghijklmnopqrstuvwxyz.
  • 89. abcdefghijklmnopqrstuvwxyz.

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