Chapter 5 Periodic Maintenance; Consumable Parts - Brother HL-1440 Service Manual

CHAPTER 5 PERIODIC MAINTENANCE
To avoid creating secondary problems by mishandling, follow the warnings below during
maintenance work.
(1) Always turn off the power switch and unplug the power cord from the power outlet
before accessing any parts inside the printer.
(2) Some parts inside the printer are extremely hot immediately after the printer is used.
When opening the front cover or rear cover to access any parts inside the printer,
never touch the red colored parts shown in the following figures.
1.

CONSUMABLE PARTS

The consumable parts described in this section are parts which are subject to deterioration or
damage and should be replaced at least once during the period of warranty of the product if
any print quality problem appears.
1.1 Drum Unit
The Drum LED is on when the drum unit is nearly at the end of its life.
Life expectancy:
NOTE:
There are many factors that determine the actual drum life, such as temperature, humidity,
type of paper and toner that you use, the number of pages per print job, etc.
<Replacement Procedure>
(1) Open the front cover of the printer and
pull out the drum unit.
(2) Place the drum unit on a flat, horizontal
surface, and remove the toner cartridge
from the drum unit while pushing the
lock lever down with your right hand.
(Fig. 5-1)
(3) Unpack the new drum unit.
WARNING
20,000 pages
5-1

CHAPTER 5 PERIODIC MAINTENANCE

Fig. 5-1