Brother MFC-9840CDW Reference Manual

Confidential
Ref. 2-9
(4) The switch back roller ASSY is turned counter again, and the document is drawn in
again. The document is passed through the paper feed rollers 1, 2 and 3, and ejected to
the document cover by the eject roller. This is so that the stacked documents are ejected
face down in the correct order.
Fig. Ref2-10
Scanning by the CCD unit
The CCD unit includes the charge coupled device (CCD) sensor. The cold cathode
fluorescent lamp lights the document, and the reflection from the scanned image data is
transferred to the lens by the mirror. The lens reduces the scanned data so that the image is
generated on to the CCD.
Function of the machine cover open sensor
The machine cover open sensor detects whether the machine cover is opened or not. Even if
the document is set into the ADF, the machine starts scanning the document glass ignoring
the ADF.
Function of the scanner lock lever
The scanner lock lever fixes the CCD unit in position to prevent the CCD unit from moving and
being damaged during transportation.
Function of the paper feed solenoid
The paper feed solenoid releases the pick-up roller and separation roller from the drive gear
while duplex scanning and engages them with the drive gear when the document is drawn in
order to prevent that the next document is drawn into the ADF while duplex printing.
Function of the switch back solenoid
The switch back solenoid switches the planet gear of the switch back roller.
SB roller ASSY
Paper feed roller 2
Paper feed roller 3
Eject roller

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