Brother MFC-7440N Service Manual

Ref. 2-6
Confidential
3.2.1 Plate-up Function of the Paper Tray
The plate of the paper tray is pushed up by the force exerted by the motor not by springs so
as to keep paper-feeding performance constant irrespective of the quantity of paper
remaining in the tray. This paragraph provides an overview of this function.
At the time of inserting the paper tray into the main body of the machine, the plate is kept
lowered. When the main motor is operated under such condition, a driving force is
transmitted to the lift gear 46 by way of several gears. The force is also transmitted to the
plate-up plate to push up the plate.
Fig. Ref. 2-6
When the plate is pushed up, the roller holder goes up. Then the lift arm goes down and the hook B
is released. The PP gear clutch cam released off the hook B rotates to push down the rib of the hook
A. Subsequently, the ratchet of the hook A for the clutch gear deviates from the gear and the plate-
up plate stops its push-up function.
Fig. Ref. 2-7
Lift gear 46Plate-up plate
Plate
Hook A
Hook B
Roller holder
Clutch gear
PP gear clutch cam
Lift arm

Brother MFC-7440N Specifications

General

Print technology	Laser
Time to first page (black, normal)	10 s
Print speed (black, normal quality, A4/US Letter)	22 ppm
Internal memory	32 MB
Mac compatibility	Yes
Sound power level (standby)	32 dB
Sound pressure level (printing)	53 dB
Sustainability certificates	ENERGY STAR
Power consumption (standby)	75 W
Power consumption (average operating)	10, 320 W
Standard interfaces	Ethernet
Faxing	Mono faxing
Fax memory	400 pages
Fax coding methods	MH, MMR (Fax coding method), MR
Fax speed dialing (max numbers)	200
Maximum input capacity	250 sheets
Multi-Purpose tray input capacity	1 sheets
Auto document feeder (ADF) input capacity	35 sheets
Media weight (tray 1)	60 - 105 g/m²
ISO A-series sizes (A0...A9)	A4, A5, A6
ISO B-series sizes (B0...B9)	B5, B6
Maximum ISO A-series paper size	A4
Multi-Purpose Tray media weight	60 - 163 g/m²
Dimensions (WxDxH)	428 x 396 x 304 mm
Networking features	10/100BaseTX
All-in-one functions	Copy, Fax, Scan
Color all-in-one functions	scan, n
Compatible operating systems	Windows Vista, XP (32 & 64 bit); Windows 2000 Mac OS X 10.2.4 en recenter Linux printerdriver
Maximum copy resolution	600 x 600 DPI
Copy speed (black, normal quality, A4)	22 cpm
Display	LCD
Market positioning	Home & office
Bundled software	ScanSoft Paperport 11SE met OCR voor Windows Newsoft Presto! PageManager7 voor Macintosh
Package weight	14.900 g