Brother Hl 5270dn User Manual

6. Routine Maintenance
 83
fPut the toner cartridge firmly into the new drum unit until you hear it lock into place. If you put the cartridge 
in properly, the blue lock lever will lift automatically.
 
CAUTION 
Make sure that you put in the toner cartridge properly, or it may separate from the drum unit.
 
gPut the drum unit and toner cartridge assembly back in the printer. 
hClose the front cover.
 

6. Routine Maintenance
 84
Replacing periodic maintenance parts
You need to replace the periodic maintenance parts regularly to maintain print quality. You should replace 
the parts listed below after printing the following number of pages.
1Paper feeding kit for MP tray means the paper pick up roller and the separation plate.
2Paper feeding kit for Tray 1, Tray 2 and Tray 3 means the paper feed roller, separation roller, separation pad and separation pad spring.
3At 5% print coverage (A4 or Letter...

6. Routine Maintenance
 85
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
 86
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
 87
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
 88
 Handle the toner cartridge carefully. If toner scatters on your hands or clothes, wipe or wash it off with cold 
water at once.
  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
 89
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
 90
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
 

91
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
 92
LCD messages
If any problems occur, the printer automatically stops printing, diagnoses the problem, and displays the 
resulting message on the LCD to alert you. Use the table below to identify and clear the error message. 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: TRAY2 or TRAY3
 
Error...