Brother HL 2240DR User Manual

							Troubleshooting 
107
5
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 out the jammed paper. 
 
						

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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
 
						

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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 quality problems, DO NOT touch the shaded parts shown in the illustrations.
    
 
						

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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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5
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.
Examples of poor print 
qualityRecommendation
 
FaintTake out the drum unit and toner cartridge assembly. Hold the assembly level 
with both hands and gently shake it from side to side several times to spread the 
toner evenly inside the cartridge.
If the LEDs indicate REPLACE TONER (Continue mode), put in a new toner 
cartridge. See Replacing the toner cartridge on page 71.
Check the machine’s environment. Conditions such as humidity, high 
temperatures, and so on, may cause this print fault. See Safety and Legal 
booklet.
If the whole page is too light, Toner Save Mode may be on. Turn off Toner Save 
Mode in Advanced tab (For Windows
®) or Basic tab of Print Settings (For 
Macintosh) of the driver.
Put in a new toner cartridge. See Replacing the toner cartridge on page 71.
Put in a new drum unit. See Replacing the drum unit on page 79.
 
Gray backgroundMake sure that you use paper that meets our specifications. See Acceptable 
paper and other print media on page 3.
Check the machine’s environment. Conditions such as high temperatures and 
high humidity can increase the amount of background shading. See Safety and 
Legal booklet.
Put in a new toner cartridge. See Replacing the toner cartridge on page 71.
Put in a new drum unit. See Replacing the drum unit on page 79.
ABCDEFGH
abcdefghijk
ABCD
abcde
01234
CDEF
d
efg
BC
b
cd
23
ABCDEFGH
abcdefghijk
ABCD
abcde
01234
 
						

							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 Settings on page 43 
(For Macintosh). 
Put in a new toner cartridge. See Replacing the toner cartridge on page 71
Put in a new drum unit. See Replacing the drum unit on page 79.
The fuser unit may be contaminated. Call your Brother dealer or Brother 
Customer Service.
 
Toner specksMake sure that you use paper that meets our specifications. Rough-surfaced 
paper may cause the problem. See Acceptable paper and other print media 
on page 3.
The drum unit may be damaged. Put in a new drum unit. See Replacing the drum 
unit on page 79.
The fuser unit may be contaminated. Call Brother Customer Service.
 
Hollow printMake sure that you use paper that meets our specifications. See Acceptable 
paper and other print media on page 3.
Choose Thick Paper mode in the printer driver, or use thinner paper than what 
you are now using.
Check the machine’s environment. Conditions such as high humidity can cause 
hollow print. See Safety and Legal booklet.
The drum unit may be damaged. Put in a new drum unit. See Replacing the drum 
unit on page 79.
 
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 Cleaning the corona 
wire on page 85.
The drum unit may be damaged. Put in a new drum unit. See Replacing the drum 
unit on page 79.
Examples of poor print 
qualityRecommendation
ABCDEFGH
abcdefghijk
ABCD
abcde
01234
 
						

							Troubleshooting 
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5
 
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 damaged. Put in a new drum unit. See Replacing the drum 
unit on page 79.
 
Lines across the pageClean the primary corona wire in the drum unit. See Cleaning the corona wire 
on page 85.
The drum unit may be damaged. Put in a new drum unit. See Replacing the drum 
unit on page 79.
 
White lines, bands or ribbing 
across the pageCheck the machines environment. Conditions such as high humidity and high 
temperatures may cause this print quality problem.
If the problem is not solved after printing a few pages, put in a new drum unit. (See 
Replacing the drum unit on page 79.)
Examples of poor print 
qualityRecommendation
ABCDEFGH
abcdefghijk
ABCD
abcde
01234
ABCDEFGH
abcdefghijk
ABCD
abcde
01234
 
						

							Troubleshooting 
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5
 
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 damaged. Put in a new drum unit. See Replacing the drum 
unit on page 79.
The toner cartridge may be damaged. Put in a new toner cartridge. See 
Replacing the toner cartridge on page 71.
Make sure that you use paper that meets our specifications. See Acceptable 
paper and other print media on page 3.
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 87.
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 light, the unit may be 
damaged.
 
Black lines down the page
Printed pages have toner stains 
down the page.Clean the primary corona wire inside the drum unit by sliding the green tab. See 
Cleaning the corona wire on page 85.
Make sure the green tab of the primary corona wire is at the home position (a).
The drum unit may be damaged. Put in a new drum unit. See Replacing the drum 
unit on page 79.
The toner cartridge may be damaged. Put in a new toner cartridge. See 
Replacing the toner cartridge on page 71.
The fuser unit may be contaminated. Call your dealer or Brother Customer 
Service.
Examples of poor print 
qualityRecommendation
94 mm
(3.71 in.)
94 mm
(3.71 in.)
94 mm
(3.71 in.)
94 mm
(3.71 in.)
ABCDEFGH
abcdefghijk
ABCD
abcde
01234
ABCDEFGH
abcdefghijk
ABCD
abcde
01234
 
						

							Troubleshooting 
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5
 
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 are not too tight or too loose against the paper stack.
Set the paper guides correctly. See Printing from the paper tray (plain paper, 
recycled paper and thin paper only) on page 10.
If you are using the manual feed slot, see Printing from the Manual feed slot 
on page 13.
The paper tray may be too full. See Printing from the paper tray (plain paper, 
recycled paper and thin paper only) on page 10.
Check the paper type and quality. See Acceptable paper and other print media 
on page 3.
 
Curled or wavyCheck the paper type and quality. High temperatures and high humidity will cause 
paper to curl. See Acceptable paper and other print media on page 3.
If you do not use the machine 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.
Open the back cover (face-up output tray) to let the printed paper out on the face-
up output tray.
Choose Reduce Paper Curl mode in the printer driver when you do not use our 
recommended paper. See Improve Print Output in Other Print Options... 
on page 32 (For Windows
®) or Print Settings on page 43 (For Macintosh).
 
Wrinkles or creasesMake sure that the paper is loaded properly. See Printing from the paper tray 
(plain paper, recycled paper and thin paper only) on page 10.
Check the paper type and quality. See Acceptable paper and other print media 
on page 3.
Turn over the stack of paper in the tray or try rotating the paper 180 in the input 
tray.
Examples of poor print 
qualityRecommendation
ABCDEFGH
abcdefghijk
ABCD
abcde
01234
ABCDEFGH
abcdefghijk
ABCD
abcde
01234
B DEFGH
abc efghijk
ACD
bcde
134