Brother Dcp 7020 User Manual

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Troubleshooting 
Error messages
As with any sophisticated office product, errors may occur. If this happens, your DCP identifies 
the problem and displays an error message. The most common error messages are shown below.
You can correct most problems by yourself. If you need more help, the Brother Solutions Center 
offers latest FAQs and troubleshooting tips.
Visit us at http://solutions.brother.com
.
Troubleshooting and routine 
maintenance
ERROR MESSAGES
ERROR MESSAGE CAUSE ACTION
Back Cover OpenThe back cover is not completely 
closed. Close the back cover of the DCP.
Change Drum Soon The drum unit is near the end of its life. Use the drum unit until you have a print quality 
problem; then replace the drum unit with a new one. 
See Replacing the drum unit (DR-350)  on page 6-22.
Cooling Down
Wait for a while The temperature of the drum unit or 
toner cartridge is too hot. The DCP will 
pause its current print job and go into 
cooling down mode. During the cooling 
down mode, you will hear the cooling 
fan running while the display on the 
DCP shows 
Cooling Down , and 
Wait for a while .You must wait 20 minutes for it to cool.
Cover is Open The front cover is not completely 
closed.  Close the front cover for the drum unit.
Data Remaining Print data is left in the DCP’s memory. Re-start printing from your computer.
Print data is left in the DCP’s memory. 
The USB or Parallel cable was 
unplugged while the computer was 
sending the data to the DCP. Press 
Job Cancel .  The DCP will cancel the job and 
eject the page that is being printed.
Try to print again.
Document Jam The document was not inserted or fed 
properly or the document scanned from 
the ADF was too long. See 
Document jams  on page 6-3.
See  Using the automatic document feeder (ADF)  on 
page 1-6.
Drum Error The drum unit needs to be cleaned. See  Cleaning the drum unit on page 6-12.
Fail to Warm up The  fuser  unit  is  too  cold. Turn off the DCP’s power switch, and check the DCP’s 
environment. If it is in a location that is too cold or too 
hot, try to cool or warm the room by turning on the air 
conditioner or heater. Or, change the location. Then, 
turn on the DCP’s power switch.
Unit is too Hot
The fuser unit is too hot.
 
						

							
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Machine too Hot The inside of the machine is too hot. Make sure you can hear the fan in the DCP spinning 
and the exhaust outlet isnt blocked by something. 
If the fan is spinning, remove some obstacles that 
surround the exhaust outlet, and then leave the DCP 
for several minutes. 
If the fan is not spinning, turn off the DCP and then turn 
it on again. 
No cartridge The toner cartridge is not installed 
properly. Reinstall the toner cartridge.
No Paper Fed The DCP is out of paper or paper is not 
properly loaded in the paper tray. Refill the paper in the paper tray and then press 
Start.
— OR —
Remove the paper and load it again and then press 
Start .
Out of Memory The DCP’s memory is full. (Copy operation in process)
Press Stop/Exit  and wait until the other operations in 
process finish and then try again.
(Printing operation in process)
Reduce print resolution. (See  Advanced tab in the 
Software User’s Guide on the CD-ROM.)
Paper jam Inside The paper is jammed inside the DCP. (See  Paper jams on page 6-4.)
Paper Jam Rear The paper is jammed in the back of the 
DCP. (See 
Paper jams  on page 6-4.)
Paper Jam Tray The paper is jammed in the paper tray 
of the DCP. (See 
Paper jams  on page 6-4.)
Scanner Locked The scanner needs to be reset. Turn off the DCP and then turn it on again.
Toner Life End The toner cartridge and drum unit 
assembly are not installed.
—OR —
Toner is used up and printing is not 
possible. Re-install the toner cartridge and drum unit assembly.
—
OR —
Replace the toner cartridge with a new one. (See 
Replacing the toner cartridge (TN-350)  on page 6-19.)
Toner Low The toner cartridge is near the end of its 
life and the toner will soon run out. Order a new toner cartridge now.
Unable to Init.
(Initialize)
Unable to Print
Unable to Scan The DCP has a  mechanical  problem. Turn off the DCP’s power switch, and then on again, If 
the error message continues, leave the DCP for 
several minutes and try it again.
ERROR MESSAGES
ERROR MESSAGE CAUSE ACTION
 
						

							
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Document jams 
If the document is jammed, follow the steps 
below.
Document is jammed in the top of the 
ADF unit
1Take out any paper from the ADF that is 
not jammed.
2Open the ADF cover.
3Pull the jammed document out to the 
left.
4Close the ADF cover.
5Press Stop/Exit .
Document is jammed under the 
document cover
1Take out any paper from the ADF that is 
not jammed.
2Lift the document cover.
3Pull the jammed document out to the 
right.
4Close the document cover.
5Press Stop/Exit .
Document is jammed at the output 
tray
1Pull the jammed document out to the 
right.
2Press Stop/Exit .
 
						

							
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Paper jams
To clear paper jams, please follow the steps 
in this section.
Paper is jammed inside the DCP
1Pull the paper tray completely out of the 
DCP.
2Pull the jammed paper up and out of the 
paper tray opening.
3Open the front cover. 
4Pull out the drum unit and toner 
cartridge assembly. The jammed paper 
may be pulled out with the toner 
cartridge and drum unit assembly, or 
this may release the paper so you can 
pull it up and out of the paper tray 
opening.
5If you can not remove the drum unit and 
toner cartridge assembly easily, do not 
use extra force. Instead, lift the scanner 
cover and use both hands to carefully 
pull the jammed paper up and out of the 
output tray opening.
WARNING
After you have just used the DCP, some 
parts inside the machine are extremely 
hot. When you open the front cover or 
back cover of the DCP, never touch the 
shaded parts shown in the following 
diagram.
 
						

							
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6Put the drum unit and toner cartridge 
assembly back in the DCP.
7Close the front cover.
8Put the paper tray in the DCP.
Paper is jammed at back of the DCP
1Open the front cover.
2Pull out the drum unit and toner 
cartridge assembly.
3Open the back cover. 
CAUTION
To prevent damage to the DCP caused by 
static electricity, do not touch the 
electrodes shown in the following diagram.
 
						

							
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4Pull the tab toward you to open the rear 
chute cover. 
5Pull the jammed paper out of the fuser 
unit. If the jammed paper cannot be 
pulled out easily, push down on the blue 
tab with one hand as you gently pull out 
the paper with the other hand.
6Close the back cover.
7Put the drum unit and toner cartridge 
assembly back into the DCP.
8Close the front cover.
 
						

							
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Paper is jammed inside the drum unit 
and toner cartridge assembly
1Open the front cover.
2Pull out the drum unit and toner 
cartridge assembly. 
3Hold down the lock lever on the left and 
pull the toner cartridge out of the drum 
unit.
Take out the jammed paper if there is 
any inside the drum unit.
4Put the toner cartridge back into the 
drum unit until you hear it lock into place. 
If you put it in properly, the lock lever will 
lift automatically.
5Put the drum unit and toner cartridge 
assembly back in the DCP.
6Close the front cover.
 
						

							
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If you are having difficulty with your DCP
If you think there is a problem with your DCP, check the chart below and follow the troubleshooting 
tips.
The Brother Solutions Center offers the latest FAQs and troubleshooting tips.
Visit us at http://solutions.brother.com
.
DIFFICULTYSUGGESTIONS 
Printing Difficulties
Poor print quality See  Improving the print quality on page 6-11.
Vertical black lines. Sometimes you may see vertical streaks/black lines on the printed pages. The  drum unit’s primary corona wire may be dirty. Clean your primary corona wire 
(See Cleaning the corona wire  on page 6-19). 
Copy Quality Difficulties
Vertical black streaks or black spots 
appear in copies. Sometimes you may see vertical streaks on your copies. Either the scanner or the 
drum unit’s primary corona wire is dirty. Clean them both. 
(See 
Cleaning the scanner glass  on page 6-17 and Cleaning the corona wire  on 
page 6-19.)
Printer Difficulties 
The DCP does not print. Please make sure:  The DCP is plugged in and the power switch is turned on.
—OR —
 The toner cartridge and drum unit are installed properly. (See  Replacing the 
drum unit (DR-350)  on page 6-22.)
— OR —
 The interface cable is securely connected between the DCP and computer.  (See the Quick Setup Guide.) 
— OR —
 Check to see if LCD is showing an error message. (See  Error messages on 
page 6-1.)
— OR —
 DCP is online. Click  Start and then  Printer and Faxes . Select the ‘Brother 
DCP-7020’ and right-click. Make sure that “Use Printer Offline” is unchecked.
The DCP prints unexpectedly or it 
prints garbage. Turn off the DCP’s power switch and then turn it on again. Check the primary 
settings in your application software to make sure it is set up to work with your 
DCP.
The DCP prints first couple of 
pages correctly, then some pages 
have text missing. Your computer is not recognizing the DCP’s input buffer full signal. Please make 
sure you connect the DCP cable correctly. (See the Quick Setup Guide.)
The DCP cannot print full pages of 
a document. 
Out of Memory  message occurs. Reduce the printing resolution. (See 
Advanced tab in the Software User’s Guide 
on the CD-ROM.)
Reduce the complexity of your document and try again. Reduce the graphic quality 
or the number of font sizes within your application software.
My headers or footers appear when 
I view my document on the screen 
but do not appear when I print 
them. Your DCP can print 62 lines per page. The top two lines and bottom two lines are 
a restricted area that will not accept print. Adjust the top and bottom margins in 
your document to allow for this.
 
						

							
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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 application and in the printer driver are the 
same.
Cannot print when using Adobe 
Illustrator. Try to reduce the print resolution. (See 
Advanced tab in the Software User’s Guide 
on the CD-ROM.)
When using ATM fonts, some 
characters are missing or some 
characters are printed in their 
place. If you are using Windows
® 98/98SE/Me, select ‘Printer Settings’ from the ‘Start’ 
menu. Select the properties of the ‘Brother DCP-7020’. Click ‘Spool Setting’ on the 
‘Details’ tab. Select ‘RAW’ from ‘Spool Data Format’.
‘Unable to write to LPT1’ or ‘LPT1 
already in use’ Error Message 
appears.  1. Make sure the DCP is on (plugged into the AC power outlet and the power 
switch turned on) and that it is connected directly to the computer using the 
IEEE-1284 bi-directional parallel cable. The cable must not go through another 
peripheral device (such as a Zip Drive, External CD-ROM Drive, or Switch box).
2. Make sure the DCP is not displaying an error message on the LCD Display.
3. Make sure no other device drivers, which also communicate through the  parallel port, are running automatically when you boot up the computer (such 
as, drivers for Zip Drives, External CD-ROM Drive, etc.) Suggested areas to 
check: ( Load=, Run=command lines in the win.ini file or the Setup Group )
4. Check with your computer manufacturer to confirm that the computer’s parallel  port settings in the BIOS are set to support a bi-directional DCP; i.e. (Parallel 
Port Mode – ECP)
‘MFC is Busy’ Error Message 
appears.
DIFFICULTYSUGGESTIONS 
 
						

							
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Paper Handling Difficulties
The DCP 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 not selected in the printer 
driver. If the LCD shows 
Paper Jam and you still have a problem, see  Paper jams 
on page 6-4.
The DCP does not feed paper from 
the manual feed slot. Reinsert the paper firmly, load one sheet at a time. Make sure that manual feed 
mode is selected in the printer driver.
How  can  I  load  envelopes? You can load envelopes from the manual feed slot. Your application software must  be set up to print the envelope size you are using. This is usually done in the Page 
Setup or Document Setup menu of your software. Please refer to the manual 
provided with your software application. 
What paper can I use? You can use plain paper, recycled paper, envelopes, transparencies and labels  that are made for laser machines. (For information on paper you can use, see 
About paper on page 1-8.)
How can I clear paper jams? See  Paper jams on page 6-4.
Print Quality Difficulties
Printed pages are curled. Low quality thin or thick paper can cause this problem. Make sure you select the  Paper Type that suits the media type you use. (See  About paper on page 1-8.)
Printed pages are smeared. The Paper Type setting may be incorrect for the type of print media you are  using—OR—The print media may be too thick or have a rough surface. 
(See  About paper  on page 1-8 and  Basic tab in the Software User’s Guide on the 
CD-ROM.)
Printouts  are too light. If your DCP is not connected to a computer, turn off Toner Save mode in the DCP  itself. (See Toner Save  on page 2-2.)
Set Toner Save mode to off in the Advanced tab in the printer driver. 
(See  Advanced tab  in the Software User’s Guide on the CD-ROM.)
If the printout is a copy, adjust the contrast. (See  Adjusting contrast on page 3-8.)
DIFFICULTYSUGGESTIONS