Improving the print quality; Toner Save; 11 - 16- Page 103

Brother MFC-7420 User's Guide

2014 Dodge Charger SRT Owner Manual

Table of Contents

USER'S GUIDE MFC-7420/MFC-7820N
background image

Troubleshooting and routine maintenance

11 - 16

11

Improving the print quality

Examples of poor print quality

Recommendation

Faint

Check the MFC’s environment. Conditions such as humidity, high temperatures, 
and so on may cause this print fault. (See 

Choosing a location

 on page 1-2.)

If the whole page is too light, 

Toner Save

 mode may be on. Turn off 

Toner Save

 

mode in the MFC menu settings and in the printer Properties of the driver. (See 

Toner 

Save

 on page 2-5 or 

Advanced tab

 in the Software User’s Guide on the CD-ROM.)

OR

If this problem occurs when making copies or printing received faxes, turn off 
Toner Save mode in the MFC itself. (See 

Toner Save

 on page 2-5.)

Clean the scanner window and the primary corona wire on the drum unit. 
(See 

Cleaning the laser scanner window

 on page 11-23 and 

Cleaning the corona 

wire

 on page 11-24.) If the print quality has not improved, install a new drum unit. 

(See 

Replacing the drum unit (DR-350)

 on page 11-28.)

Install a new toner cartridge. (See 

Replacing the toner cartridge (TN-350)

 on page 

11-25.)

Gray background

Make sure that you use paper that meets the recommended specifications. 
(See 

About paper

 on page 1-9.)

Check the MFC’s environment - high temperatures and high humidity can increase 
the amount of background shading. (See 

Choosing a location

 on page 1-2.)

Install a new toner cartridge. (See 

Replacing the toner cartridge (TN-350)

 on page 

11-25.)

Clean the primary corona wire on the drum unit. (See 

Cleaning the corona wire

 on 

page 11-24.) If the print quality has not improved, install a new drum unit. 
(See 

Replacing the drum unit (DR-350)

 on page 11-28.)

Ghost

Make sure you use paper that meets our specifications. Rough-surfaced paper or 
thick print media may cause this problem.

Make sure that you choose the appropriate media type in the printer driver or in 
the MFC’s Paper Type menu setting. (See 

About paper

 on page 1-9 and 

Basic tab

 

in the Software User’s Guide on the CD-ROM.)

Install a new drum unit. (See 

Replacing the drum unit (DR-350)

 on page 11-28.)

Toner specks

Make sure that you use paper that meets our specifications. Rough-surfaced 
paper may cause the problem. (See 

About paper

 on page 1-9.)

Clean the primary corona wire and the drum unit. (See 

Cleaning the corona wire

 

on page 11-24 an

Cleaning the drum unit

 on page 11-17.) If the print quality has 

not improved, install a new drum unit. (See 

Replacing the drum unit (DR-350)

 on 

page 11-28.)

Hollow print

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

About paper

 on 

page 1-9.
Choose 

Thick paper

 mode in the printer driver or in the MFC’s Paper Type menu 

setting, or use thinner paper than you are currently using. (See 

Setting the Paper 

Type

 on page 2-3 and 

Basic tab

 in the Software User’s Guide on the CD-ROM.)

Check the MFC’s environment because conditions such as high humidity can 
cause hollow print. (See 

Choosing a location

 on page 1-2.)

Clean the primary corona wire on the drum unit. (See 

Cleaning the corona wire

 on 

page 11-24.) If the print quality has not improved, install a new drum unit. 
(See 

Replacing the drum unit (DR-350)

 on page 11-28.)

All black

Clean the primary corona wire on the drum unit. (See 

Cleaning the corona wire

 on 

page 11-24.)

If the print quality has not improved, install a new drum unit. (See 

Replacing the 

drum unit (DR-350)

 on page 11-28.)

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Detailed Information for Brother MFC-7420 User's Guide

Lists of information found in Brother MFC-7420 User's Guide - Page 103

  • 2.) If the whole page is too light, Toner Save mode may be on.
  • 5.) Clean the scanner window and the primary corona wire on the drum unit.
  • 24.) If the print quality has not improved, install a new drum unit.
  • 28.) Install a new toner cartridge.
  • 25.) Gray background Make sure that you use paper that meets the recommended specifications.
  • 9.) Check the MFC’s environment - high temperatures and high humidity can increase the amount of background shading.
  • 2.) Install a new toner cartridge.
  • 25.) Clean the primary corona wire on the drum unit.
  • 24.) If the print quality has not improved, install a new drum unit.
  • 28.) Ghost Make sure you use paper that meets our specifications.
  • 28.) Toner specks Make sure that you use paper that meets our specifications.
  • 9.) Clean the primary corona wire and the drum unit.
  • 17.) If the print quality has not improved, install a new drum unit.
  • 28.) Hollow print Make sure that you use paper that meets our specifications.
  • 9.) Choose Thick paper mode in the printer driver or in the MFC’s Paper Type menu setting, or use thinner paper than you are currently using.
  • 2.) Clean the primary corona wire on the drum unit.
  • 24.) If the print quality has not improved, install a new drum unit.
  • 28.) All black Clean the primary corona wire on the drum unit.
  • 24.) If the print quality has not improved, install a new drum unit.

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