Brother MFC-9440CN Service Manual

iv Confidential
2.2.3 Paper Feeding Kit (PF Kit1, PF Kit2) ..................................................................... 2-30
2.2.4 MP Paper Feeding Kit (PF Kit MP) ........................................................................ 2-35
2.3 Parts Life Reset Function................................................................................................. 2-40
CHAPTER 3 DISASSEMBLY AND ASSEMBLY..................................... 3-1
1. SAFETY PRECAUTIONS............................................................................................3-1
2. PACKING ....................................................................................................................3-2
3. SCREW TORQUE LIST ..............................................................................................3-3
4. LUBRICATION ............................................................................................................3-7
5. OVERVIEW OF GEARS............................................................................................3-13
6. HARNESS ROUTING................................................................................................3-18
7. DISASSEMBLY FLOW..............................................................................................3-28
8. DISASSEMBLY PROCEDURE .................................................................................3-29
8.1 Paper Tray........................................................................................................................ 3-29
8.2 DX Feed ASSY (DCP-9042CDN/ MFC-9450CDN only).................................................. 3-31
8.3 MP Cover ASSY/ MP Paper Guide ASSY ....................................................................... 3-32
8.4 MP Lift Arm 2/ MP Roller Holder ASSY ........................................................................... 3-35
8.5 Fuser Unit/ Toner Filter Frame ASSY .............................................................................. 3-37
8.6 Back Cover Upper............................................................................................................ 3-39
8.7 Paper Eject ASSY DX/SX ................................................................................................. 3-40
8.8 Back Cover ASSY ............................................................................................................ 3-43
8.9 Paper Guide DX/ HV TR Top Cover ................................................................................ 3-44
8.10 Transfer HVPS PCB Unit ............................................................................................... 3-45
8.11 Registration-mark Sensor PCB ASSY 1, 2/ Density Sensor/ Registration Relay PCB
ASSY/ Transfer HVPS PCB ASSY ................................................................................ 3-46
8.12 Side Cover L ASSY........................................................................................................ 3-52
8.13 Side Plate LB.................................................................................................................. 3-53
8.14 Drum Unit Fan (OPC)..................................................................................................... 3-54
8.15 Side Cover R ASSY ....................................................................................................... 3-55
8.16 Paper Stopper ................................................................................................................ 3-56
8.17 Driver PCB ASSY........................................................................................................... 3-57
8.18 Document Scanner Unit ................................................................................................. 3-59
8.19 ADF Unit......................................................................................................................... 3-62
8.20 Panel Unit....................................................................................................................... 3-75
8.21 NCU PCB ASSY (MFC-9440CN/ 9450CDN only) ......................................................... 3-79
8.22 Joint Cover ASSY........................................................................................................... 3-81
8.23 Roller Holder ASSY........................................................................................................ 3-90
8.24 Paper Feed Frame Unit/ T1 PE/Edge Sensor PCB ASSY ............................................ 3-91
8.25 Belt Cleaner Release Sensor PCB ASSY...................................................................... 3-99
8.26 THM/HUM Sensor Holder ASSY ................................................................................. 3-100

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