Brother MFC-9840CDW 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 FB UNIT ............................................................................. 4-14
4. IF YOU REPLACE THE TRANSFER HVPS PCB UNIT OR
REGISTRATION-MARK SENSOR PCB ASSY 1, 2.................................................. 4-15
5. IF YOU REPLACE THE LASER UNIT ...................................................................... 4-16
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)............5-6
1.4.4 ADF Performance Test (Function code 08) .............................................................5-6
1.4.5 Test Pattern (Function code 09)...............................................................................5-7
1.4.6 Worker Switch (WSW) Setting and Printout.............................................................5-8
1.4.7 Operational Check of LCD (Function code 12) ......................................................5-11
1.4.8 Operational Check of Control Panel Button (Function code 13) ............................5-12
1.4.9 ROM Version Check (Function code 25) ...............................................................5-13
1.4.10 Drum Unit Cleaning (Function code 31)...............................................................5-14
1.4.11 Operational Check of Sensors (Function code 32) ..............................................5-15
1.4.12 Switching of the USB Transfer Speed in the PictBridge Mode/
(Function code 45) ...............................................................................................5-19
1.4.13 EEPROM Customizing (User-accessible) (Function code 52) ............................5-20
1.4.14 Received Data Transfer Function (Function code 53) (MFC-9840CDW only) ....5-21
1.4.15 Fine Adjustment of Scan Start/End Positions (Function code 54) .......................5-23
1.4.16 Acquisition of White Level Data and CCD Scanner Area Setting
(Function code 55) ...............................................................................................5-25
1.4.17 Adjustment of Color Registration (Maintenance Mode 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).............5-30
1.4.22 Printout of Maintenance Information
(Function code 77) .....................................5-32
1.4.23 Operational Check of Fans (Function code 78) ...................................................5-33
1.4.24 Display of the Machine’s Log Information (Function code 80) .............................5-35

Brother MFC-9840CDW Specifications

General

Print technology	Laser
Maximum resolution	600 x 2400 DPI
Economical printing	Yes
Time to first page (black, normal)	16 s
Time to first page (color, normal)	17 s
Print speed (black, normal quality, A4/US Letter)	20 ppm
Scan to	E-mail, FTP, OCR, USB
Scanner type	Flatbed scanner
Grayscale levels	256
Input color depth	48 bit
Maximum scan resolution	19200 x 19200 DPI
Optical scanning resolution	1200 x 2400 DPI
Copier resize	25 - 400 %
Maximum copy resolution	1200 x 600 DPI
N-in-1 copy function (N=)	4, 9, 16, 25
Copy speed (black, normal quality, A4)	16 cpm
Faxing	Mono 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	128 MB
Sound power level (standby)	30 dB
Sound pressure level (printing)	54.5 dB
Custom media sizes	(69.9 - 216mm) - (116 - 406.4mm)
Dimensions (WxDxH)	530 x 539 x 520 mm
Networking features	10/100Base-TX
Wireless technology	IEEE 802.11b/g
All-in-one functions	Copy, Fax, Scan
Maximum internal memory	0.640 GB
Color all-in-one functions	copy, print, scan
Media weight (tray 1)	60 - 105g/m2
Paper tray media types	Bond paper, Envelopes, Labels, Plain paper, Recycled paper
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
Multi-Purpose Tray media weight	60 - 163 g/m²
Security algorithms	LEAP
Supported network protocols (IPv4)	TCP/IP (IPv4 & IPv6)
Standard interfaces	USB 2.0
USB 2.0 ports quantity	1
Bundled software	ScanSoft PaperPort (Win) NewSoft Presto! PageManager (Mac)
Power consumption (PowerSave)	36 W
Power consumption (average operating)	515, 100 W
Package weight	45800 g
Digital sender	No
Maximum duty cycle	3000 pages per month
Market positioning	Business