Brother MFC-9420CN Service Manual

6-13 Confidential
6.4.3 Replacement of Transfer Roller ASSY PU (120K KIT)
<Criterion of Replacement>
Transfer roller ASSY PU should be replaced with a new one according to the periodical
maintenance cycle set out in the Table 6-1.
When time is due for replacement of transfer roller ASSY PU, the following message appears on
the LCD.
Replace 120K Kit
NOTE: At the same time, replacement of the paper feed roller, the cleaning roller, the separator
pad and the transfer unit is strongly recommended.
<Purpose of Replacement>
To prevent the transfer efficiency from declining due to deterioration of the transfer roller ASSY
PU.
<Necessary Tools and Replacement Materials>
(1) Two or three pieces of cotton cloth for cleaning.
(2) Transfer roller ASSY PU (one unit)
<Work Procedures>
Sequence of Disassembling
(1) Turn off the machine’s power switch.
(2) Open the back cover of the machine.
(3) Release the lock levers on the right and left-hand sides, and then lift the levers to release the
transfer roller ASSY PU.
Fig. 6-15
(4) Take out the transfer roller ASSY PU by gently pulling the right-hand side up and sliding the
transfer roller to the right.
Fig. 6-16
Lock lever
Lock lever
Ttransfer roller ASSY PU

Brother MFC-9420CN Specifications

General

Print technology	Laser
Maximum resolution	1200 x 2400 DPI
Economical printing	Yes
Print speed (black, normal quality, A4/US Letter)	31 ppm
Print speed (color, normal quality, A4/US Letter)	8 ppm
Digital sender	No
Number of print cartridges	4
Scanner type	Flatbed scanner
Scanner features	Scan to: e-mail, image, OCR, file
Copier resize	25 - 400 %
Maximum copy resolution	600 x 600 DPI
Maximum number of copies	99 copies
Copy speed (black, normal quality, A4)	31 cpm
Copy speed (color, normal quality, A4)	8 cpm
Faxing	Color faxing
Fax memory	500 pages
Modem speed	33.6 Kbit/s
Fax speed dialing (max numbers)	200
Total input capacity	750 sheets
Maximum input capacity	250 sheets
Auto document feeder (ADF) input capacity	35 sheets
Maximum internal memory	576 MB
Bundled software	ScanSoft PaperPort Presto! PageManager
I/O ports	IEEE-1284 USB 2.0
Dimensions (WxDxH)	483.5 x 514 x 530 mm
Printer management	BRAdmin Professional, MIB-II
Networking features	10Base-T/100Base-TX
All-in-one functions	Fax, Scan
Color all-in-one functions	copy, fax, print, scan
Compatible operating systems	Windows 98(SE)/ Me/ NT WorkStation 4.0/ 2000 Professional/ XP Mac OS 9.1 - 9.2, Mac OS X 10.2.4+
Sustainability certificates	ENERGY STAR
Power consumption (standby)	85 W
Power consumption (PowerSave)	16 W
Power consumption (average operating)	1090 W
Operating temperature (T-T)	10 - 32 °C
Operating relative humidity (H-H)	20 - 80 %
Market positioning	Business