Brother HL 2240DNR User Manual

Troubleshooting
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Paper handling6
First, make sure that you are using paper that meets Brother’s recommended paper specifications. (See 
About paperon page 5.)
ProblemRecommendation
The printer does not feed 
paper.„If there is paper in the paper tray, make sure it is straight. If the paper is curled, 
flatten it before printing. Sometimes it is helpful to remove the paper. Turn the 
stack over and put it back in the paper tray.
„Reduce the amount of paper in the paper tray, and then try again.
„Make...

Troubleshooting
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The paper slides off the back 
output tray.Follow these steps:
aRemove the output tray support flap 1 (1) from the top of the printer by first 
lifting the flap up.
Then push the flap to the left or right to release one of the posts (2) on the flap 
and pull up.
 
bAttach the support flap 1 (1) to the back output tray by inserting the posts of the 
support flap one at a time into the holes of the back output tray.
 
ProblemRecommendation
1
2
1
 

Troubleshooting
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Paper jams and how to clear them6
If a paper jam occurs, the printer will flash the Error LED as shown below.
 
HOT SURFACE 
After you have just used the printer, some internal parts of the printer will be extremely hot. When you open 
the front cover or back cover (back output tray) of the printer, DO NOT touch the shaded parts shown in the 
illustrations.
 
Clear the jammed paper as follows.
If the jammed paper is removed completely by following the steps below, you can install the...

Troubleshooting
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6
aOpen the front cover. 
bSlowly take out the drum unit and toner cartridge assembly. The jammed paper will be pulled out with 
the drum unit and toner cartridge assembly.
 
CAUTION 
We recommend that you put the drum unit and toner cartridge assembly on a piece of disposable paper or 
cloth in case you accidentally spill or scatter toner.
  
To prevent damage to the printer caused by static electricity, DO NOT touch the electrodes shown in the 
illustration.
 
 
cClose the front...

Troubleshooting
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dPull the paper tray completely out of the printer. 
ePull the jammed paper down and out of the printer. 
fOpen the back cover (back output tray). 
 

Troubleshooting
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g Pull the tab toward you to open the fuser cover (1). 
hPull the jammed paper out of the fuser unit. 
HOT SURFACE 
After you have just used the printer, some internal parts of the printer will be extremely hot. Wait for the 
printer to cool down before you touch the internal parts of the printer.
 
 
iClose the back cover (back output tray).
1
 

Troubleshooting
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jPush down the green lock lever and take the toner cartridge out of the drum unit. Clear the jammed paper 
if there is any inside the drum unit.
 
CAUTION 
Handle the toner cartridge carefully. If toner scatters on your hands or clothes, wipe or wash it off with cold 
water at once.
  
To avoid print quality problems, DO NOT touch the shaded parts shown in the illustrations.
    
 

Troubleshooting
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kPut the toner cartridge back into the drum unit until you hear it lock into place. If you put the cartridge in 
properly, the green lock lever will lift automatically.
 
lOpen the front cover. Put the drum unit and toner cartridge assembly back in the printer. 
mPut the paper tray firmly back in the printer.
nClose the front cover.
oMake sure that the Error LED is now off.
 

Troubleshooting
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Improving the print quality6
If you have a print quality problem, print a test page first (see Print a test pageon page 56). If the printout 
looks good, the problem is probably not the printer. Check the interface cable or try the printer on another 
computer.
This section gives information on the following topics.
Examples of poor print 
qualityRecommendation
 
Faint„Check the printer’s environment. Conditions such as humidity, high 
temperatures, and so on, may cause this print...

Troubleshooting
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Hollow print„Make sure that you use paper that meets our specifications. See About 
paperon page 5.
„Choose Thick paper mode in the printer driver, or use thinner paper than what 
you are now using.
„Check the printer’s environment. Conditions such as high humidity can cause 
hollow print. See Positioning the printeron page 4.
 
All black„Clean the primary corona wire inside the drum unit by sliding the green tab. Be 
sure to return the green tab to the home position (a). See...