Periodical Replacement Parts - Brother HL-4040CN, HL-4050CDN, HL-4070CDW Service Manual

2.

PERIODICAL REPLACEMENT PARTS

2.1 Periodical Replacement Parts
Periodical replacement parts are the parts to be replaced periodically to maintain product
quality. These parts would affect the product quality if they loose their functionality even if they
do not appear to be damaged or there is no change in their appearance.
The periodical replacement parts listed in the table below should be replaced according to the
service life.
Parts Name
Fuser unit &
Toner filter frame ASSY
Laser unit
Paper feeding kit
MP paper feeding kit
*1
: The paper feeding kit includes the separation pad ASSY, separation pad spring and roller
holder ASSY.
*2
: MP Paper feeding kit includes the separation pad ASSY MP, separation pad spring MP, and
MP roller holder ASSY.
When replacing the periodical replacement parts, each of the counters need to be reset in
order to count the number of replacement times. Refer to
chapter.
Also make sure to wipe the dirt on the drum unit as shown in the figure below when replacing
each of the periodical replacement parts.
The number of printed pages of the machine can be checked on Print Settings. (Refer to
Printout of Printer Settings"
depending on the type of print job or the paper to being used. The figures indicated as the
approximate life in the table above are worked out when printing a general business document
(with 5% print coverage) on one side of A4-size paper.
Note:
- Always turn off the power switch of the machine and unplug the power cord from the power
outlet before replacing the periodical replacement parts.
- If the fuser unit is replaced after errors related to the fuser unit occur, it is necessary to leave
the machine power ON for ten minutes after part replacement. This will make the machine to
be released from errors.
- After disconnecting flat cables, check that each cable is not damaged at its end or short-
circuited.
- When connecting flat cables, do not insert them at an angle. After insertion, check that the
cables are not at an angle.
LCD
Fuser Unit
Laser Unit
*1
PF Kit1, PF Kit2
*2
PF KitMP
in Chapter 5.) The actual number of printed page will vary
Q'ty Approximate Life
1 80,000 pages
1 100,000 pages
1 100,000 pages
1 50,000 pages
"2.3 Parts Life Reset Function"
2-2
Replacement
Procedure
Refer to 2.2.1.
Refer to 2.2.2.
Refer to 2.2.3.
Refer to 2.2.4.
in this
"2.3
Confidential