Brother MFC-9440CN Service Manual

i Confidential
PREFACE
This service manual contains basic information required for after-sales service of the color
laser multi function center (hereinafter referred to as "the machine"). This information is
vital to the service personnel to maintain the high printing quality and performance of the
machine.
This service manual covers the DCP-9040CN/9042CDN/ MFC-9440CN/9450CDN machines.
This manual consists of the following chapters:
CHAPTER 1: TROUBLESHOOTING
Details of error messages and codes that the incorporated self-diagnostic functions of the
machine will display if any error or malfunction occurs. If any error message appears, refer
to this chapter to find which parts should be checked or replaced.
The latter half of this chapter provides sample problems that could occur in the main
sections of the machine and related troubleshooting procedures.
CHAPTER 2: PERIODICAL MAINTENANCE
Details of consumable parts and periodical maintenance parts. This chapter also covers
procedures for disassembling and assembling periodical maintenance parts.
CHAPTER 3: DISASSEMBLY AND ASSEMBLY
Details of procedures for disassembling and assembling the machine together with related
notes. The disassembly order flow provided enables you to see at a glance the quickest
way to get to parts involved.
At the start of a disassembly job, you can check the disassembly order flow that guides you
through a shortcut to get to the object parts.
This chapter also covers screw tightening torques and lubrication points to which the
specified lubrications should be applied during assembly of the machine.
CHAPTER 4: ADJUSTMENTS AND UPDATING OF SETTINGS,
REQUIRED AFTER PARTS REPLACEMENT
Details of adjustments and updates of settings, which are required if the main PCB and
some other parts of the machine have been replaced. This chapter also covers how to
update the firmware.
CHAPTER 5: SERVICE FUNCTIONS
Describes the maintenance mode which is exclusively designed for the purpose of
checking the settings and making any adjustments using the control panel.
This chapter also covers hidden function menus, which activate settings and functions or
reset the parts life.
CHAPTER 6: CIRCUIT DIAGRAMS, WIRING DIAGRAM
Provides Circuit Diagrams and Wiring Diagrams for the connections of the PCBs.

Brother MFC-9440CN Specifications

General

Print technology	Laser
Maximum resolution	2400 x 600 DPI
Time to first page (color, normal)	16 s
Print speed (black, normal quality, A4/US Letter)	20 ppm
Scan to	e-mail, file, image, OCR
Input color depth	48 bit
Copier resize	25 - 400 %
PC free copying	Yes
Maximum copy resolution	1200 x 600 DPI
Maximum number of copies	99 copies
N-in-1 copy function (N=)	2, 4, 9, 16
Copy speed (black, normal quality, A4)	16 cpm
Faxing	Color faxing
Fax memory	400 pages
Modem speed	33.6 Kbit/s
Fax speed dialing (max numbers)	300
Total input capacity	250 sheets
Total output capacity	150 sheets
Multi-Purpose tray input capacity	50 sheets
Auto document feeder (ADF) input capacity	35 sheets
Internal memory	64 MB
Maximum internal memory	576 MB
Sound power level (standby)	30 dB
Sound pressure level (printing)	54.5 dB
Display	LCD
Market positioning	Business
Non-ISO print media sizes	Executive (184 x 267mm), Folio (media size), Legal (media size), Letter (media size)
ISO A-series sizes (A0...A9)	A4, A5, A6
ISO B-series sizes (B0...B9)	B5, B6
JIS B-series sizes (B0...B9)	B5
Maximum ISO A-series paper size	A4
Font styles	66 Scaleable fonts, 12 Bitmap fonts, 13 Barcodes
Dimensions (WxDxH)	432 x 487 x 482 mm
Networking features	10/100 Base-TX
All-in-one functions	Copy, Fax, Scan
Color all-in-one functions	copy, fax, print, scan
Compatible operating systems	Windows Vista/XP/Home/2003/2000 Mac OS X 10.2.4 or greater Linux
Standard interfaces	USB 2.0
Power consumption (standby)	95 W
Power consumption (PowerSave)	28 W
Power consumption (average operating)	495 W
Package weight	38600 g
Sustainability certificates	ENERGY STAR
Digital sender	No