Brother Hl 5250dn User Manual

6. Routine Maintenance
73
Cleaning
Clean the outside and inside of the printer regularly with a dry, lint-free cloth. When you replace the toner 
cartridge or the drum unit, make sure that you clean the inside of the printer. If printed pages are stained with 
toner, clean the inside of the printer with a dry, lint-free cloth.
Cleaning the outside of the printer
CAUTION 
Use neutral detergents. Cleaning with volatile liquids such as thinner or benzine will damage the surface of 
the printer.
  
DO NOT...

6. Routine Maintenance
74
cWipe the outside of the printer with a dry, lint-free cloth to remove dust. 
dRemove anything that is stuck inside the paper tray.
eWipe the inside of the paper tray with a dry, lint-free cloth to remove dust. 
fPut the paper tray back in the printer.
gPlug the printer back in, and then turn on the power switch.
Cleaning the inside of the printer
aTurn off the printer power switch and then unplug the printer. 
 

6. Routine Maintenance
75
bPress the front cover release button and then open the front cover. 
cTake out the drum unit and toner cartridge assembly. 
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.
 
 
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...

6. Routine Maintenance
76
 To prevent damage to the printer from static electricity, DO NOT touch the electrodes shown in the 
illustration.
 
 
dWipe the scanner window with a dry, lint-free cloth. 
ePut the drum unit and toner cartridge assembly back in the printer.
fClose the front cover.
gPlug the printer back in, and then turn on the power switch.
 

6. Routine Maintenance
77
Cleaning the corona wire
If you have print quality problems, clean the corona wire as follows:
aPress the front cover release button and then open the front cover. 
bTake out 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 from static electricity, DO NOT touch the electrodes shown...

6. Routine Maintenance
78
cClean the primary corona wire inside the drum unit by gently sliding the blue tab from right to left and left 
to right several times. 
 
CAUTION 
Be sure to return the tab to the home position (a) (1). If you do not, printed pages may have a vertical stripe.
 
dPut the drum unit and toner cartridge assembly back in the printer. Close the front cover. 
1
 

79
7
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
.
Identifying your problem
First, check the following:
„The AC power cord is connected properly and the printer is turned on.
„All of the protective parts have been removed.
„The toner cartridge and drum unit are installed properly.
„The front and back covers are fully closed.
„Paper is inserted properly in the...

7. Troubleshooting
80
Error messages in the Status Monitor
The Status Monitor will report problems with the printer. Take the proper action by referring to the following 
table.
The default setting for the Status Monitor is off. If you want to turn the status monitor on, you can change the 
setting of the Status Monitor in Device Options from the Advanced tab. See Device Options on page 3-6.
Error messageAction
Toner Low„Buy a new toner cartridge and have it ready for when the Toner Life End status 
is...

7. Troubleshooting
81
Dust On Drum„See Cleaning the corona wire on page 77.
Memory Full„Press Go to print the remaining data in the printer memory. Cancel the print job 
if you want to delete the remaining data in the printer memory. See Control panel 
buttons on page 51.
„Reduce the complexity of your document or cut the print resolution.
„Add more memory. See Installing extra memory on page 58.
Print Overrun„Press Go to print the remaining data in the printer memory. Cancel the print job 
if you want...

7. Troubleshooting
82
Error message printout
The printer can also report problems by printing an error message. Use the table below to identify and clear 
the error message.
Error messageAction
MEMORY FULL„Press Go to print the remaining data in the printer memory. Cancel the print job 
if you want to delete the remaining data in the printer memory. See Control panel 
buttons on page 51.
„Reduce the complexity of your document or cut the print resolution.
„Add more memory. See Installing extra memory on...