Brother MFC-7440N User Guide

Troubleshooting and routine maintenance
107
B
Improving the print quality B
Examples of poor print
quality
Recommendation
White lines across the page
 Make sure that you use paper that meets our specifications. A rough
surfaced paper or thick print media can cause the problem. (See
Acceptable paper and other print media on page 14.)
 Make sure that you choose the appropriate media type in the printer
driver or in the machine’s Paper Type menu setting. (See Acceptable
paper and other print media on page 14 and Basic tab in the Software
User’s Guide on the CD-ROM.)
 The problem may disappear by itself. Print multiple pages to clear this
problem, especially if the machine has not been used for a long time.
 The drum unit may be damaged. Put in a new drum unit. (See
Replacing the drum unit on page 137.)
White lines down the page
 Wipe the laser scanner windows with a soft cloth. (See Cleaning the
laser scanner window on page 128.)
 Make sure that a torn sheet of paper is not inside the machine
covering the scanner window.
 The toner cartridge may be damaged. Put in a new toner cartridge.
(See Replacing a toner cartridge on page 134.)
 The drum unit may be damaged. Put in a new drum unit. (See
Replacing the drum unit on page 137.)
Hollow print
 Make sure that you use paper that meets our specifications. (See
Acceptable paper and other print media on page 14.)
 Choose Thick paper mode in the printer driver, choose Thick in the
machine’s Paper Type menu setting or use thinner paper than you
are currently using. (See Paper type on page 21 and Basic tab in the
Software User’s Guide on the CD-ROM.)
 Check the machine’s environment. Conditions such as high humidity
can cause hollow print. (See Choosing a location on page 86.)
 The drum unit may be damaged. Put in a new drum unit. (See
Replacing the drum unit on page 137.)
Grey background
 Make sure that you use paper that meets our specifications. (See
Acceptable paper and other print media on page 14.)
 Check the machine’s environment. Conditions such as high
temperatures and high humidity can increase the amount of
background shading. (See Choosing a location on page 86.)
 The toner cartridge may be damaged. Put in a new toner cartridge.
(See Replacing a toner cartridge on page 134.)
 The drum unit may be damaged. Put in a new drum unit. (See
Replacing the drum unit on page 137.)
ABCDEFGH
abcdefghijk
ABCD
abcde
01234
ABCDEFGH
abcdefghijk
ABCD
abcde
01234
ABCDEFGH
abcdefghijk
ABCD
abcde
01234

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