Brother HL 2240DR User Manual

Troubleshooting 
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IMPORTANT
• 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 machine caused by static electricity, DO NOT touch the electrodes shown in 
the illustration.
 
 
cClose the front cover.
Note
Do not put the drum unit and toner cartridge assembly back in at this point.
 
dPull the paper tray completely out of the machine.
eUse both hands to slowly pull...

Troubleshooting 
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fOpen the back cover (face-up output tray). 
g Pull down the tabs at the left and right hand sides to open the fuser cover (1). 
hUsing both hands, gently pull the jammed paper out of the fuser unit. 
iClose the fuser cover and the back cover (face-up output tray).
1
 

Troubleshooting 
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jPull the duplex tray completely out of the machine. 
kPull the jammed paper out of the machine or the duplex tray. 
lMake sure that the jammed paper does not remain under the machine from static electricity. 
mPut the duplex tray back in the machine.
 

Troubleshooting 
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nPut the paper tray firmly back in the machine.
oIf you could not remove the drum unit and toner cartridge assembly in step b, you must do step b now 
before you can go to step p
pPush 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.
 
IMPORTANT
• Handle the toner cartridge carefully. If toner scatters on your hands or clothes, immediately wipe or wash 
it off with cold water.
• To avoid print...

Troubleshooting 
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qPut 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.
 
rOpen the front cover. Put the drum unit and toner cartridge assembly back into the machine. 
sClose the front cover.
tMake sure that the Error LED is off and that the Ready LED light is on. If the machine does not start 
printing automatically, press Go.
 

Troubleshooting 
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Improving the print quality5
If you have a print quality problem, print a test page first (see Print a test page on page 61). If the printout 
looks good, the problem is probably not the machine. Check the interface cable or try the machine on another 
computer.
Brother does not recommend the use of cartridges other than genuine Brother Original cartridges or the 
refilling of used cartridges with toner from other sources.
This section gives information on the following topics....

Troubleshooting 
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GhostMake sure that you use paper that meets our specifications. Rough-surfaced 
paper or thick print media may cause this problem. See Acceptable paper and 
other print media on page 3.
Make sure that the media type setting in the driver matches the type of paper you 
are using. See Acceptable paper and other print media on page 3.
Choose Reduce Ghosting mode in the printer driver. See Improve Print Output 
in Other Print Options... on page 32 (For Windows
®) or Print...

Troubleshooting 
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White lines across the pageMake sure that you use paper that meets our specifications. A rough surfaced 
paper or thick print media can cause problems.
Make sure that you choose the correct media type in the printer driver.
Make sure that a torn piece of paper is not stuck inside the machine blocking the 
scanner.
The problem may disappear by itself. Print multiple pages to clear this problem, 
especially if the machine has not been used for a long time.
The drum unit may be...

Troubleshooting 
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White Spots on black text 
and graphics at 94 mm 
(3.71 in.) intervals
 
Black Spots at 94 mm 
(3.71 in.) intervalsIf the problem is not solved after printing a few pages, the drum unit may have 
foreign material, such as glue from a label, stuck on the drum. Clean the drum 
unit. (See Cleaning the drum unit on page 87)
The drum unit may be damaged. Put in a new drum unit. See Replacing the drum 
unit on page 79.
 
Black toner marks across the 
pageThe drum unit may be...

Troubleshooting 
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White lines down the pageThe toner cartridge may be damaged. Put in a new toner cartridge. See 
Replacing the toner cartridge on page 71.
The drum unit may be damaged. Put in a new drum unit. See Replacing the drum 
unit on page 79.
If the LEDs indicate REPLACE TONER (Continue mode), put in a new toner 
cartridge. See Replacing the toner cartridge on page 71.
 
Page skewedMake sure that the paper or other print media is loaded properly in the paper tray 
and that the guides...