Brother MFC 8440 User Manual

TROUBLESHOOTING AND ROUTINE MAINTENANCE   12 - 30
2Hold down the lock lever on the right and pull the toner cartridge 
out of the drum unit.
Caution
Handle the toner cartridge carefully. If toner scatters on your hands 
or clothes, immediately wipe it off or wash it with cold water.
Lock Lever
 

12 - 31   TROUBLESHOOTING AND ROUTINE MAINTENANCE
3Unpack the new toner cartridge. Place the used toner cartridge 
into the aluminum bag and discard it according to local 
regulations. 
Caution
■Wait to unpack the toner cartridge until immediately before you 
install it in the MFC. If a toner cartridge is left unpacked for a long 
period of time, the toner life is shortened.
■ Brother strongly recommends that you do not refill the toner 
cartridge provided with your MFC. We also strongly recommend 
that...

TROUBLESHOOTING AND ROUTINE MAINTENANCE   12 - 32
5Remove the protective cover.
6Insert the new toner cartridge in the drum unit until it clicks into 
place. If you put it in properly, the lock lever will lift automatically.
7Clean the primary corona wire inside the drum unit by gently 
sliding the blue tab from right to left several times. Return the 
blue tab to the Home position (▼) before reinstalling the drum 
unit and toner cartridge assembly.
Toner Cartridge Drum Unit
Corona Wire
Tab
Home...

12 - 33   TROUBLESHOOTING AND ROUTINE MAINTENANCE
8Reinstall the drum unit and toner cartridge assembly and close 
the front cover.
 

TROUBLESHOOTING AND ROUTINE MAINTENANCE   12 - 34
Replacing the drum unit
The MFC uses a drum unit to create print images on paper. If the 
LCD shows Change Drum Soon , the drum unit is near the end of 
its life and it is time to purchase a new one.
Even if the LCD shows  Change Drum Soon, 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  Change Drum Soon  appears), then...

12 - 35   TROUBLESHOOTING AND ROUTINE MAINTENANCE
Follow these steps to replace the drum unit:
1Press the cover release button and then open the front cover.
2Remove the old drum unit and toner cartridge assembly. Place 
it on a drop cloth or disposable paper to avoid scattering toner.
Caution
To prevent damage to the printer from static electricity, do not touch 
the electrodes shown below.
 

TROUBLESHOOTING AND ROUTINE MAINTENANCE   12 - 36
3Hold down the lock lever on the right and pull the toner cartridge 
out of the drum unit. (See Replacing the toner cartridge  on page 
12-28.)
4Wait to unpack the new drum unit until immediately before 
installing it. Place the old drum unit into the plastic bag and 
discard it according to local regulations.
5Reinstall the toner cartridge into the new drum unit. 
(See  Replacing the toner cartridge  on page 12-28.)
6Reinstall the new drum unit, keeping...

12 - 37   TROUBLESHOOTING AND ROUTINE MAINTENANCE
Checking the drum life
You can see the percentage of the drum’s life that remains available.
1Press Menu, 2, 0, 2.
2For five seconds, the LCD shows 
the available percentage of drum 
life.
Page Counter
You can see number of total pages, copy pages, print pages and 
List/Fax (total fax print + total list print) pages that your MFC has 
printed.
1Press Menu, 2, 0, 3.
2The LCD shows number of pages 
for Total  and Copy .
Press   to see  Print and 
List/Fax...

OPTIONAL ACCESSORIES   13 - 1
13
 
Memory board
The memory board is installed on the main controller board inside the 
MFC. When you add the optional memory board, it increases the 
performance for both copier and printer operations.
Optional accessories
Model Name Optional Memory
MFC-8440 (32 MB Standard Memory) 32MB   TECHWORKS 12457-0001
MFC-8640D (16 MB Standard Memory 64MB   TECHWORKS 12458-0001
MFC-8840D (32 MB Standard Memory) 128MB   TECHWORKS 12459-0001
MFC-8840DN (32 MB Standard Memory)
In...

13 - 2   OPTIONAL ACCESSORIES
Installing the optional memory board
WARNING
■DO NOT touch the surface of the main board within 15 minutes 
after turning off the power.
■ Before installing the optional memory board, make sure there are 
no faxes in the memory.
1Disconnect the telephone line cord, turn the MFC power switch 
off, unplug the MFC power cord from the AC outlet, and then 
disconnect the interface cable.
WARNING
Turn the MFC power switch off, before installing (or removing) the 
memory board....