Brother Hl 4050cdn User Manual

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You can correct most problems by yourself. If you need additional help, the Brother Solutions Center offers 
the latest FAQs and troubleshooting tips. Visit us at http://solutions.brother.com
.
Identify ing y our problem7
First, check the following:7

The AC power cord is connected properly and the printer is turned on.

All of the protective parts have been removed.

The toner cartridges and drum unit are installed properly.

The front and back covers are fully closed.

Paper is inserted properly in the paper tray.

The interface cable is securely connected to the printer and the computer.

The correct driver for the printer has been chosen and is installed.

The computer is set up to connect to the correct printer port.
Printer does not print:
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If you did not solve your problem with the above checks, identify your problem and then go to the page 
suggested below.

LCD Messages
(See LCD messageson page 143.)

Paper handling
(See Paper handlingon page 146 and Paper jams and how to clear themon page 147.)

Other problems
(See Other problemson page 168.)
Pages are printed, but there are problems with:
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Print quality
(See Improving the print qualityon page 159.)

Printout is incorrect
(See Solving print problemson page 168.)
Troubleshooting7
 
						

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LCD messages7
If any problems occur, the printer automatically stops printing, diagnoses the problem, and displays the 
resulting message on the LCD to alert you. Take the appropriate action, referring to the following tables. If 
you cannot clear the problem, call the dealer you bought the printer from or Brother Customer Service.
Note
The LCD names for the paper trays are as follows.
 Standard paper tray: Tray1
 Multi-purpose tray: MP
 Optional Lower tray(HL-4050CDN / HL-4070CDW only): Tray2
 
Error messages
Error messageAction
Access ErrorThe USB device was removed while data was processing. Press Cancel. Reinsert the USB 
device and try to print with Direct Print or PictBridge. 
Cartridge ErrorPull out the drum unit. Take out the toner cartridge that is indicated on the second line of 
LCD and put it back into the printer again.
Cover is OpenClose the cover that is indicated on the second line of LCD.
DIMM ErrorTurn off the printer. Re-install the DIMM correctly. Wait a few seconds, and then turn it on 
again. If this error message appears again, replace the DIMM with a new one. See Installing 
extra memoryon page 94.
Drum ErrorClean the corona wires. (See Cleaning the corona wireson page 127.)
EL ErrorOpen the front cover and close it again.
Fuser ErrorTurn the power switch off, wait a few seconds and then turn it again. Leave the printer for 
15 minutes with the power on.
Jam XXXCarefully pull out the jammed paper from the area shown in Paper jams and how to clear 
themon page 147.
Low TemperatureAllow the machine to warm up.
Manual FeedPut the same size of paper in the MP tray as is shown on the LCD. If the printer is paused, 
press Go.
No Belt UnitInstall the belt unit. (See Belt uniton page 111.)
No Drum UnitInstall the drum unit. (See Drum uniton page 105) 
No PaperPut paper in the indicated empty tray.
No TrayPut the tray1 in the printer.
No Waste TonerInstall the Waste Toner Box . (See Waste toner boxon page 116.)
Out Of MemoryAdd more memory. (See Installing extra memoryon page 94.)
Size ErrorCheck the printer driver setting and put the correct sized paper in tray that is indicated on 
the second line of LCD. (See About paperon page 6.)
Size Error DXYou can only use A4, A4 Long size for duplex  printing. Check the printer driver setting. Put 
the correct size of paper, which is indicated on the second line of the LCD, in the tray. (See 
About paperon page 6.)
 
						

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Size MismatchPut the same size paper in the paper tray or MP tray that is selected in the printer driver, 
and then press Go, or select the size of paper you set in the Tray Size setting from the 
control panel.
Toner Life EndIt is time to replace the toner cartridge. (See Replacing a toner cartridgeon page 98.)
Tray2 ErrorTake out Tray2 and push it back in firmly.
Unusable DeviceRemove the USB flash memory drive from USB Direct Interface. 
Waste Toner FullIt is time to replace the Waste Toner Box. (See Replacing the waste toner 
boxon page 116.)
Error messages in Color Correction
Call service messageAction
Calibrate
 
Calibration failed. See 
Troubleshooting chapter 
in Users guide.
Turn off the printer. Wait a few seconds, then turn it on again.

Put in a new drum unit. (See Replacing the drum uniton page 105.)

Put in a new belt unit. (See Replacing the belt uniton page 111.)

Put in a waste toner box . (See Replacing the waste toner boxon page 116.)

If the problem continues, call your dealer or Brother Customer Service.
Registration
 
Registration failed. See 
Troubleshooting chapter 
in Users guide.
Turn off the printer. Wait a few seconds, then turn it on again.

Put in a new belt unit. (See Replacing the belt uniton page 111.)

If the problem continues, call your dealer or Brother Customer Service.
Maintenance messages
Error messageMeaningA ction
o o n oThe four o marks (also n, n=blinking o) 
indicate the Black (K), Yellow (Y), Magenta 
(M), Cyan (C) toner cartridges from left to 
right. When the o mark blinks (shown as n 
in left), the indicated colour toner is nearly 
empty. When the toner becomes empty, the 
o indicator disappears completely.Buy a new toner cartridge before you get a 
Toner Life End message.
Change Belt UnitIt is time to replace the belt unit. Replace the belt unit.
Change PF KitXXIt is time to replace the paper feeding kit XX. Replace  the paper  feeding  kit.
Drum End SoonIt is time to replace the drum unit.  Replace the drum unit. (See Replacing the 
drum uniton page 105.)
Fuser Unit EndIt is time to replace the fuser unit. Replace the fuser unit.
Laser Unit EndIt is time to replace the laser unit. Replace the laser unit.
Waste Toner SoonThe waste toner box  is almost full. Be ready to replace the waste toner box . 
(See Replacing the waste toner 
boxon page 116.)
Error messages (continued)
Error messageAction
 
						

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Call service messages
Call service messageA ction
Print Unable ##Turn off the printer. Wait a few seconds, then turn it on again. If this does not clear the 
problem, call your dealer or a Brother Customer Service.
 
						

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Paper handling7
First, make sure that you are using paper that meets Brother recommended paper specifications. (See About 
paperon page 6.)
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, 
straighten 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 sure that manual feed mode is not chosen in the printer driver.
The printer does not feed paper 
from the MP tray.
Fan the paper well and put it back in firmly.

Make sure that you have chosen the MP Tray in the Paper Source of the printer 
driver.
The printer does not feed 
envelopes.
The printer can feed envelopes from the multi-purpose tray. You must set up your 
application to print on the size of envelopes you are using. This is usually done in 
the page setup or document setup menu of your software. (See your application 
manual.)
A paper jam has occurred.
Clear the jammed paper. (See Paper jams and how to clear themon page 147.)
The printer does not print. 
Make sure that the cable is connected to the printer.

Make sure that you have chosen the correct printer driver.
When printing on normal paper, 
it creases.
Change the printer driver setting in Media Type to a thin setting.
The paper slides off the top 
output tray.
Pull out and lift up the output tray support flap.
 
 
						

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Paper jams and how to clear them7
If paper jams inside the printer, the printer will stop. One of the following LCD messages will appear to tell 
you where to find the jammed paper.
 

JamMPTray (1)
Paper jam in the MP tray. (See page 148.)

JamTray1 (2)
Paper jam in the standard paper tray (Tray 1). (See page 148.)

JamTray2 (3)
Paper jam in the lower tray (Tray 2). (See page 148.)

Jam Duplex (4)
Paper jam underneath the standard paper tray (Tray 1) or in the fuser unit. (See page 150.)

Jam Rear (5)
Paper jam where the paper comes out of the printer. (See page 152.)

Jam Inside (6)
Paper jam inside the printer. (See page 155.)
If the error message still appears on the LCD after you remove the jammed paper, there may be more paper 
jammed somewhere else. Check the printer thoroughly.
After you have removed all the jammed paper, open the front cover and then close it again to start printing.
Note
Always remove all paper from the paper tray and straighten the stack when you add new paper. This helps 
prevent multiple sheets of paper from feeding through the printer at one time and prevents paper jams.
 
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Jam MP Tray (paper jam in the MP tray)7
 
Jam MP Tray
If a paper jam occurs inside the MP tray, follow these steps:
aRemove the paper from the MP tray.
bRemove any jammed paper from in and around the MP Tray.
cFan the paper stack, and then put it back in the MP tray. 
dWhen loading paper in the MP tray, make sure that the paper stays under the maximum paper height 
guides on both sides of the tray.
eIf the printer does not automatically start printing, press Go.
Jam Tray 1 / Tray  2 (paper jam inside the paper tray )7
Note
The LCD names for the paper trays are as follows.
 Standard paper tray: Tray1
 Optional Lower tray: Tray2
 
 
Jam Tray1
 
Jam Tray2
If a paper jam occurs inside the paper tray, follow these steps:
 
						

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aPull the paper tray completely out of the printer. 
bUse both hands to slowly pull out the jammed paper. 
cPut paper below the maximum paper mark. While pressing the green paper-guide release lever, slide 
the paper guides to fit the paper size. Make sure that the guides are firmly in the slots.
dPut the paper tray firmly back in the printer.
CAUTION 
DO NOT take out the standard paper tray while paper is feeding from a lower paper tray as this will cause 
a paper jam.
 
 
						

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7 Jam Duplex (paper jam underneath the standard paper tray  (tray 1) or in the 
fuser unit) (HL-4050CDN / HL-4070CDW only )7
 
Jam Duplex
If a paper jam occurs inside the duplex unit, follow these steps:
aPull the paper tray completely out of the printer and check inside the printer. 
bIf paper is not caught inside the printer, check underneath the paper tray. 
Note
Do not put the paper tray back in at this point.
 
 
						

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cIf the paper is not caught in the paper tray, open the back cover. 
dPull out the jammed paper slowly. 
HOT SURFA CE 
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.
 
 
eFully close the back cover.
fPut the paper tray back in the printer.