Brother MFC-9440CN Service Manual

vi Confidential
CHAPTER 4 ADJUSTMENTS AND UPDATING OF SETTING,
REQUIRED AFTER PARTS REPLACEMENT ................... 4-1
1. IF YOU REPLACE THE MAIN PCB ............................................................................4-1
2. IF YOU REPLACE THE ENGINE PCB......................................................................4-11
3. IF YOU REPLACE THE TRANSFER HVPS PCB UNIT OR REGISTRATION-
MARK SENSOR PCB ASSY 1, 2..............................................................................4-14
4. IF YOU REPLACE THE LASER UNIT.......................................................................4-15
CHAPTER 5 SERVICE FUNCTIONS ....................................................... 5-1
1. MAINTENANCE MODE............................................................................................... 5-1
1.1 How to Enter the Maintenance Mode................................................................................. 5-1
1.2 How to Enter the User-accessible Maintenance Mode...................................................... 5-1
1.3 List of Maintenance-mode Functions ................................................................................. 5-2
1.4 Detailed Description of Maintenance-mode Functions ...................................................... 5-3
1.4.1 EEPROM Parameter Initialization (Function code 01, 91) ...................................... 5-3
1.4.2 Printout of Scanning Compensation Data (Function code 05) ................................ 5-4
1.4.3 Placement of Scanner Unit Position for Transportation (Function code 06) ........... 5-7
1.4.4 ADF Performance Test (Function code 08)............................................................. 5-7
1.4.5 Test Pattern (Function code 09) .............................................................................. 5-8
1.4.6 Worker Switch (WSW) Setting and Printout ............................................................ 5-9
1.4.7 Operational Check of LCD (Function code 12)...................................................... 5-12
1.4.8 Operational Check of Control Panel PCB (Function code 13) .............................. 5-13
1.4.9 ROM Version Check (Function code 25)............................................................... 5-14
1.4.10 Drum Unit Cleaning (Function code 31) .............................................................. 5-15
1.4.11 Operational Check of Sensors (Function code 32).............................................. 5-16
1.4.12 Switching of the USB Transfer Speed in the PictBridge Mode (Function code 45) 5-20
1.4.13 EEPROM Customizing (User-accessible) (Function code 52) ............................ 5-21
1.4.14 Received Data Transfer Function (Function code 53)
(MFC-9440CN/ 9450CDN only)........................................................................... 5-22
1.4.15 Fine Adjustment of Scan Start/End Positions (Function code 54)....................... 5-24
1.4.16 Acquisition of White Level Data Setting (Function code 55)................................ 5-25
1.4.17 Adjustment of Color Registration (Function code 66).......................................... 5-26
1.4.18 Paper Feeding and Ejecting Test (Function code 67) ......................................... 5-28
1.4.19 Sensitivity Adjustment of Density Sensor (Function code 72) (Don’t use) .......... 5-28
1.4.20 EEPROM Customizing (Function code 74) ......................................................... 5-29
1.4.21 Sensitivity Adjustment of Registration-mark Sensor (Function code 75) ............ 5-31
1.4.22 Printout of Maintenance Information (Function code 77)..................................... 5-33
1.4.23 Operational Check of Fans (Function code 78)................................................... 5-34
1.4.24 Display of the Machine’s Log (Function code 80)................................................ 5-36
1.4.25 Error Code Indication (Function code 82)............................................................ 5-38

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