Brother FAX-2840 User Manual

100
Improving the print quality B
If the printout has a quality problem, make a copy. If the copy looks good, the problem is probably
not the machine. Check the interface cable connections and the following steps first. And then, if
you still have a print quality problem, check the chart below and follow the recommendations.
Note
Brother does not recommend the use of cartridges other than genuine Brother Original
cartridges or the refilling of used cartridges with toner from other sources.
a To get the best print quality, we suggest using the recommended paper. Check that you use
paper that meets our specifications. (See Acceptable paper and other print media
uu page 19.)
b Check that the drum unit and toner cartridge are installed correctly.
Examples of poor print quality Recommendation
Faint
 Take out the drum unit and toner cartridge assembly. Hold the
assembly level with both hands and gently shake it from side to
side several times to spread the toner evenly inside the cartridge.
 Check if the Replace Toner Setting is set to Continue
(Continue mode) by pressing Menu, 1, 7. (See Advanced User’s
Guide: Toner settings.)
 Check the machine’s environment. Conditions such as humidity,
high temperatures, and so on, may cause this print fault. (See
Product Safety Guide: Choose a safe location for your product.)
 If the whole page is too light, Toner Save mode may be on. Turn
off Toner Save in the machine’s menu settings or (for FAX-
2950) Toner Save Mode in the printer Properties (or
Preferences) of the driver. (See Advanced User’s Guide: Toner
save or Software User’s Guide: Advanced tab.)
 Clean the corona wire of the drum unit. (See Cleaning the corona
wire uu page 66.)
 Put in a new toner cartridge. (See Replacing the toner cartridge
uu page 54.)
 Put in a new drum unit. (See Replacing the drum unit
uu page 59.)
 Adjust the Print Density by pressing Menu, 2, 1, 6 (for FAX-2950)
or Menu, 2, 1, 7 (for FAX-2840) and then press c to make the print
darker. (See Advanced User’s Guide: Setting the Print Density.)
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Brother FAX-2840 Specifications

General

Group dial	8
Modem speed	33.6 Kbit/s
Color faxing	No
One-touch dials	22
Print technology	Laser
Fax compatibility	ITU-T G3
Fax coding methods	JBIG, MH, MMR (Fax coding method), MR
Fax resolution modes	Fine, Photo, Standard, Super Fine
Fax transmission speed	2.5 sec/page
Out-of-paper reception	400 pages
Error Correction Mode (ECM)	Yes
Fax speed dialing (max numbers)	200
Copier resize	25 - 400 %
Grayscale levels	256
Maximum copy resolution	300 x 600 DPI
Maximum number of copies	99 copies
N-in-1 copy function (N=)	2, 4
Copy speed (black, normal quality, A4)	20 cpm
Standard input capacity	250 sheets
Standard output capacity	100 sheets
Auto document feeder (ADF) input capacity	20 sheets
Supported media weight(s)	60 - 105 g/m²
Maximum standard media size	A4
ISO A-series sizes (A0...A9)	A4, A5, A6
Display number of lines	2 lines
Display number of characters	16
Processor family	ARM9
Processor frequency	200 MHz
Maximum internal memory	16 MB
Product color	Black, Grey
Sustainability certificates	ENERGY STAR
Noise level	53 dB
Noise level (idle)	30 dB
AC input voltage	220-240 V
AC input frequency	50 - 60 Hz
Power consumption (standby)	55 W
Power consumption (typical)	365 W
Power consumption (PowerSave)	1.5 W
Package weight	12900 g

Weight and Dimensions

Weight	9000 g
Dimensions (WxDxH)	368 x 360 x 311 mm