Brother DCP 7025R User Manual

Troubleshooting and routine maintenance
6 - 9
6
Scanning Difficulties
TWAIN errors appear while 
scanning.Make sure the Brother TWAIN driver is selected as the primary source. In 
PaperPort
®, click Scan in the File menu and select the Brother TWAIN driver.
Software Difficulties
Cannot install software or print. Run the Repair MFL-Pro Suite program on the CD-ROM. This program will repair 
and reinstall the software.
Cannot perform ‘2 in 1 or 4 in 1’ 
printing.Check that the paper size setting in the...

Chapter 6
6 - 10
Paper Handling Difficulties
The machine does not load paper. 
The LCD shows No Paper Fed or 
Paper Jam.If there is no paper, load a new stack of paper into the paper tray. If there is paper 
in the paper tray, make sure it is straight. If the paper is curled, you should 
straighten it. Sometimes it is helpful to remove the paper, turn the stack over and 
put it back into the paper tray. Reduce the amount of paper in the paper tray, and 
then try again. Check that the manual feed mode is...

Troubleshooting and routine maintenance
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6
Improving the print quality
This section provides information on the following topics:
Examples of poor print qualityRecommendation
Faint
Check the machine’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 machine menu settings or in the printer driver. (See Toner Save on...

Chapter 6
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All black
Clean the primary corona wire on the drum unit. (See Cleaning the corona wire on 
page 6-19.)
If the print quality has not improved, install a new drum unit. (See Replacing the 
drum unit (DR-2000) on page 6-23.)
White Spots on black text and 
graphics at 78.5 mm 
intervals
Black Spots at 78.5 mm 
 intervals
Cleaning the drum unit
Dust, paper powder, glue, and so on may stick to the surface of the photosensitive 
drum (OPC) and cause black or white spots to appear on printed...

Troubleshooting and routine maintenance
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6
Black toner marks across the page
Make sure that you use paper that meets our specifications. (See About paper on 
page 1-6.)
If you use label sheets for laser printers, the glue from the sheets may sometimes 
stick to the OPC drum surface. Clean the drum unit. (See Cleaning the drum unit 
on page 6-12.)
Do not use paper that has clips or staples because they will scratch the surface of 
the drum.
If the unpacked drum unit is in direct sunlight or room...

Chapter 6
6 - 14
Curl or wave
Check the paper type and quality. High temperatures and high humidity will cause 
paper to curl.
If you don’t use the machine very often, the paper may have been in the paper tray 
too long. Turn over the stack of paper in the paper tray. Also, fan the paper stack 
and then rotate the paper 180° in the paper tray.
Wrinkles or creases
Make sure that paper is loaded properly.
Check the paper type and quality. (See About paper on page 1-6.)
Turn over the stack of paper in the...

Troubleshooting and routine maintenance
6 - 15
6 How to change the LCD 
language
You can change the LCD language.
1Press Menu and   or   to select 
1.General Setup.
Press Set.
2Press  or  to select 
0.Local Language.
Press Set.
3Press  or  to select your 
language.
Press Set.
4Press Stop/Exit.
Packing and shipping 
the machine
When you transport the machine, use the 
packing materials that came with your 
machine. If you do not pack the machine 
properly, you could void your warranty.
1Turn off the...

Chapter 6
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9Pack the drum unit and toner cartridge 
assembly, AC power cord and printed 
materials in the original carton as shown 
below:
0Close the carton and tape it shut.
Routine maintenance
Cleaning the outside of the 
machine
1Pull the paper tray completely out of the 
machine.
CAUTION
The drum unit contains toner, so handle it 
carefully. If toner scatters and your hands 
or clothes get dirty, immediately wipe or 
wash it off with cold water.
CAUTION
■Use neutral detergents. Cleaning with...

Troubleshooting and routine maintenance
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6
2Wipe the outside of the machine with a 
soft cloth to remove dust.
3Remove anything that is stuck inside the 
paper tray.
4Wipe the inside and the outside of the 
paper tray with a soft cloth to remove 
dust.
5Re-load the paper and put the paper tray 
in the machine.
Cleaning the scanner glass
Turn off the machine’s power switch and lift 
the document cover. Clean the scanner glass 
and the white plastic surface underneath the 
document cover with...

Chapter 6
6 - 18
Cleaning the laser scanner 
window
1Before you clean the inside of the 
machine, turn off the machine’s power 
switch.
2Open the front cover and pull out the 
drum unit and toner cartridge assembly.
3Gently 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...