Brother Laserprinter Hl 1650 1670n User Guide

CHAPTER 5 MAINTENANCE
5-11
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☛☛ ☛ 7.Clean the primary corona wire inside the Drum unit by gently sliding the blue
tab from right to left several times.  Return the tab to the Home position ()
before you re-install the Drum unit assembly.
Fig. 5-7
!Caution
Make sure that you return the tab to the home position  () before you re-
install the Drum unit assembly in the printer; otherwise, printed pages may
have vertical stripes.
☛
☛☛ ☛ 8.Re-install the Drum unit assembly into the printer.  Close the Front...

5-12
™ CHANGE DRUM SOON message
 
 
 
CHANGE DRUM SOON
 
 
 
The printer uses a Drum unit to create the print images on paper.  If the
display shows the above message, it means the Drum unit is near the end of
its life.  We recommend that you replace the Drum unit with a new one
before there is a noticeable deterioration in the print quality.
 
 
 
 
™ Replacing the Drum unit
This printer can print approximately 20,000 pages *1 with one Drum unit.
*1 At 5% coverage print (A4-Letter size).  The actual...

CHAPTER 5 MAINTENANCE
5-13
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☛☛ ☛  1.Press the Cover release button; and then open the Front cover.
Fig. 5-9
☛
☛☛ ☛  2.Pull out the Drum unit assembly.
Fig. 5-10
!Caution
•  We recommend that you place the Drum unit 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 below. 

5-14
☛
☛☛ ☛  3.While pressing the Lock lever, pull the Toner cartridge out of the Drum unit
assembly.
Fig. 5-11
!Caution
Handle the toner cartridge carefully.  If toner scatters on your hands or
clothes, wipe or wash it off with cold water immediately.
✒
✒✒ ✒Note
Discard the used Drum unit according to local regulations.  Be sure to seal
up the Drum unit tightly so that toner powder does not spill out of the unit.
Handle the Toner cartridge carefully.  If toner scatters on your hands or
clothes,...

CHAPTER 5 MAINTENANCE
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☛
☛☛ ☛  5.Install the Toner cartridge into the new Drum unit until you hear it lock into
place with a click.  When the Toner cartridge is installed correctly, the lock
lever is lifted automatically.
Fig. 5-12
!Caution
Make sure you install the Toner cartridge correctly, or it may separate from
the Drum unit when you pick up the Drum unit assembly.
☛
☛☛ ☛ 6.Re-install the Drum unit assembly in the printer.
Fig. 5-13 

5-16
☛
☛☛ ☛  7.Reset the page counter referring to the instructions supplied with the new
Drum unit.
✒
✒✒ ✒Note
Do not reset the page counter when you replace only the Toner cartridge.
☛
☛☛ ☛  8.Close the Front cover.
✒
✒✒ ✒Note
We recommend that you clean the printer when you replace the Drum unit.
See “How to clean the printer” in this chapter. 

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Clean the printer exterior and interior routinely. If printouts are stained with
toner, clean the printer interior and Drum unit.
™ Cleaning the printer exterior
 
 
 
 Wa r n i n g
 There are high voltage electrodes inside the printer.  Before cleaning the
printer, make sure you have turned off the power switch and unplugged the
power cord from the power outlet.
 
 
 
 
 
 
☛
☛☛ ☛  1.Turn off the printer, and then unplug the power cord....

5-18
 
 
™ Cleaning the printer interior
☛
☛☛ ☛ 1.Turn off the power switch, and then unplug the power cord.
 Wa r n i n g
There are high voltage electrodes inside the printer.  Before cleaning the
printer, make sure you have turned off the power switch and unplugged the
power cord from the outlet.
☛
☛☛ ☛ 2.Press the Cover release button, and then open the Front cover.
Fig. 5-14 

CHAPTER 5 MAINTENANCE
5-19
☛
☛☛ ☛ 3.Pull the Drum unit assembly out of the printer.
Fig. 5-15
!Caution
Handle the Drum unit carefully since it contains toner.  If toner scatters and
your hands or cloths get dirty, immediately wipe or wash it off with cold
water.
✒
✒✒ ✒Note
We recommend that you place the Drum unit on a piece of disposable paper
or cloth in case you accidentally spill or scatter toner. 

5-20
☛
☛☛ ☛ 4.Gently wipe the scanner window with a soft dry cloth.
Fig. 5-16
 Wa r n i n g
After you have just used the printer, some internal parts of the printer are
extremely HOT!  When you open the covers of the printer, never touch the
shaded parts shown in the following illustrations.
!Caution
•  Do not touch the scanner window with your fingers.
•  Do not wipe the scanner window with isopropyl alcohol.