Brother HL 7050N User Manual

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Improving the print quality 
This section provides information on the following topics:
Examples of poor 
print qualityRecommendation
Faint print■Check the printers environment. Conditions such as 
humidity, high temperatures, and so on may cause 
this print fault. See Positioning the printer in 
Chapter 1.
■If the whole page is too light, the Toner Save Mode 
may be on.  Turn off Toner Save Mode in the printer 
Properties tab of the driver.  
■Try using a new...

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Hollow print■Make sure that you use paper that meets our 
specifications. See What kind of paper can I use? in 
Chapter 1.
■Choose Thick paper mode in the printer driver, or use 
thinner paper than you are currently using.
■Check the printers environment because conditions 
such as high humidity can cause hollow print. See 
Positioning the printer in Chapter 1.
Page skewed■Make sure the paper or other print media is loaded 
properly in the paper tray and that the...

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Black lines down 
the page
Printed pages have toner 
stains stripes down the 
page.
■The toner cartridge may be damaged.  Put in a new 
toner cartridge. See Replacing the toner cartridge in 
Chapter 5.
■You may clear the problem by cleaning the primary 
corona wire inside the drum unit by sliding the blue 
tab.  Make sure to return the blue tab to the Home  
position ( ). See Cleaning the corona wire in 
Chapter 5.
Black spots 
Black spots at 108 mm 
(4.25 in.)...

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White lines down 
the page■You may clear the problem by wiping the scanner 
window with a soft cloth. See Cleaning the inside of 
the printer or the Maintenance Tutorial video on the 
supplied CD-ROM.
Black toner marks 
across the page■The drum unit may be damaged.  Put in a new drum 
unit. See Replacing the drum unit in Chapter 5.
White Spots on black 
text and graphics at 
94mm (3.7 in.) intervals
■The drum unit may be damaged.  Put in a new drum 
unit. See...

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Solving print problems
ProblemRecommendation
The printer prints 
unexpectedly or it prints 
garbage data.■Make sure the printer cable is not too long.  We 
recommend that you use a parallel cable that is less 
than 1.8 metres (6 feet) long.  
■Make sure that the printer cable is not damaged or 
broken. 
■If you are using an interface-switching device, 
remove it. Connect your computer directly to your 
printer, and then try again.
■Check that you have chosen the...

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Other problems
Printing with the serial interface
ProblemRecommendation
The printer cannot print 
at all.  Your PC shows 
the following error 
message:
There was an error 
writing to LPT1: (or 
BRUSB) for the printer.■Check that the printer cable is not damaged or 
broken. 
■If you have an interface-switching device, make sure 
that you choose the correct printer.   
ProblemRecommendation
Cannot print from 
application software.■If you are using a serial...

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Printing from DOS 
Printer HDD (Hard Disk Drive)
ProblemRecommendation
Cannot print from 
application software■Check that the DOS application software interface 
settings match those of your printer. For example, if 
you are using a parallel printer cable, you would most 
likely set your DOS software printer port to LPT1.
■Check if the printer has any printer alarms.
■Check that you have chosen the appropriate printer 
in your application software.  
■If the...

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BR-Script 3
ProblemRecommendation
The printer cannot print. If IGNORE DATA appears on the LCD, please do the 
following:
1. Reset the printer. [Press - twice, then press Set twice 
and finally press Go.]
2. Turn off ERROR PRINT in BR-SCRIPT3 mode. 
[Press + five times, then press Set and then -, now 
press Set twice, select ERROR PRINT = OFF and 
press Set and finally press Go.]
3. If the printer prints out the error message page which 
says ERROR NAME;...

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Appendix
Printer specifications 
Printing
Print methodElectrophotography by semiconductor laser-beam scanning
LaserWave length: 780 nm 
Pulse duration: 17 ns
Output: 15 mW max.
ResolutionWindows
® 95/98/Me,
Windows NT® 4.0, 
Windows® 2000 and 
Windows® XP1200 x 1200 dpi
600 x 600 dpi
300 x 300 dpi
DOS 600 x 600 dpi
Mac
® OS 1200 x 1200 dpi 
600 x 600 dpi
300 x 300 dpi
Print speed28 pages per minute for Europe and other countries
(1200, 600 or 300 dpi / A4 size)
30 pages per...