Brother MFC 8460N User Manual

Troubleshooting and routine maintenance
127
Clean the outside of the machine as 
follows:
C
aPull the paper tray completely out of the 
machine.
 
bWipe the outside of the machine with a 
soft cloth to remove dust.
 
cRemove anything that is stuck inside the 
paper tray.
dWipe the inside of the paper tray with a 
soft cloth to remove dust.
 
eRe-load the paper and put the paper tray 
firmly back in the machine.
 

128
Cleaning the scanner glassC
aTurn off the machine’s power switch.
bLift the document cover (1).
Clean the white plastic surface (2) and 
scanner glass (3) underneath it with 
isopropyl alcohol on a soft lint-free cloth.
 
cIn the ADF unit, clean the white plastic 
bar (1) and the scanner glass strip (2) 
under it with isopropyl alcohol on a lint-
free cloth.
 
Cleaning the laser scanner 
windowC
CAUTION 
DO NOT use isopropyl alcohol to clean the 
laser scanner window.
  
DO NOT touch the laser...

Troubleshooting and routine maintenance
129
HOT SURFACE 
After you have just used the machine, some 
internal parts of the machine will be 
extremely hot. When you open the front 
cover of the machine, DO NOT touch the 
shaded parts shown in the illustration.
 
 
CAUTION 
To prevent damage to the machine from 
static electricity, DO NOT touch the 
electrodes shown in the illustration.
 
 
cGently clean the laser scanner window 
(1) by wiping it with a clean soft, dry lint-
free cloth. Do not use...

130
Cleaning the corona wireC
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.
aOpen the front cover and take out the 
drum unit and toner cartridge assembly.
 
bClean the primary corona wire inside the 
drum unit by gently sliding the blue tab 
from right to left and left to right several 
times.
 
cReturn the blue tab and snap it into the 
home position (b).
CAUTION 
If you do not return the...

Troubleshooting and routine maintenance
131
Cleaning the drum unitC
aTake out the drum unit and toner 
cartridge assembly, and then take out 
the toner cartridge from the drum unit.
bPut the print sample in front of the drum 
unit, and find the exact position of the 
poor print.
 
cTurn the white gear on the drum as you 
check the surface of the OPC drum (1).
 
dWhen you have found the mark on the 
drum that matches the print sample, 
wipe the surface of the OPC drum with a 
dry cotton swab until the...

132
Replacing the toner cartridge 
(TN-550/TN-580)C
The TN-580 toner cartridge can print 
approximately 7,000 pages using a high yield 
toner cartridge. When the toner cartridge is 
running low, the LCD shows Toner Low. 
The machine is supplied with a standard TN-
550 toner cartridge that must be replaced 
after approximately 3,500 pages. Actual page 
count will vary depending on your average 
type of document (i.e., standard letter, 
detailed graphics).
Note
It is a good idea to keep a new toner...

Troubleshooting and routine maintenance
133
CAUTION 
To prevent damage to the machine from 
static electricity, DO NOT touch the 
electrodes shown in the illustration.
 
 
bHold down the lock lever on the right and 
take the toner cartridge out of the drum 
unit.
 
WARNING 
DO NOT put a toner cartridge into a fire. It 
could explode, resulting in injuries.
 
CAUTION 
Put the drum unit on a drop cloth or large 
piece of disposable paper to avoid spilling 
and scattering the toner.
  Handle the toner...

134
cUnpack the new toner cartridge. Put the 
used toner cartridge into the aluminum 
bag and discard it according to local 
regulations.
dGently rock the toner cartridge from side 
to side five or six times to spread the 
toner evenly inside the cartridge.
 
ePull off the protective cover.  
fPut the new toner cartridge firmly into 
the drum unit until you hear it lock into 
place. If you put it in properly, the lock 
lever will lift automatically.
 
gClean the primary corona wire inside the 
drum unit...

Troubleshooting and routine maintenance
135
Replacing the drum unit 
(DR-520)C
The machine uses a drum unit to create print 
images on paper. If the LCD shows 
Drum Near End, the drum unit is near the 
end of its life and it is time to buy a new one.
Even if the LCD shows Drum Near End, you 
may be able to continue printing without 
having to replace the drum unit for a while. 
However, if there is a noticeable deterioration 
in the output print quality (even before 
Drum Near End appears), then the drum...

136
CAUTION 
To prevent damage to the printer from static 
electricity, DO NOT touch the electrodes 
shown in the illustration.
 
 
bHold down the lock lever on the right and 
take the toner cartridge out of the drum 
unit.
 
Note
Discard the used drum unit according to 
local regulations, keeping it separate from 
domestic waste. Be sure to seal up the 
drum unit tightly so that toner powder does 
not spill out of the unit. If you have 
questions, call your local waste disposal 
office.
 
CAUTION 
Wait...