Brother A B C D, A B C D, a b c d e, a b c d e

Troubleshooting

Improving the print quality

If you have a print quality problem, print a test page first (see Print a test page on page 61). If the printout looks good, the problem is probably not the machine. Check the interface cable or try the machine on another computer.

Using non-Brother supplies may affect the print quality, hardware performance, and machine reliability. This section gives information on the following topics.

Examples of poor print		Recommendation
quality
		 Take out the drum unit and toner cartridge assembly. Hold the assembly level	5
		with both hands and gently shake it from side to side several times to spread the
	ABCDEFGH	toner evenly inside the cartridge.
	abcdefghijk	 If the LEDs indicate REPLACE TONER (Continue mode), put in a new toner
	A B C D
		cartridge. See Replacing the toner cartridge on page 71.
	a b c d e
		 Check the machine’s environment. Conditions such as humidity, high
0 1 2 3 4
		temperatures, and so on, may cause this print fault. See Safety and Legal
	Faint	booklet.
		 If the whole page is too light, Toner Save Mode may be on. Turn off Toner Save
		Mode in Advanced tab (For Windows®) or Basic tab of Print Settings (For
		Macintosh) of the driver.
		 Put in a new toner cartridge. See Replacing the toner cartridge on page 71.
		 Put in a new drum unit. See Replacing the drum unit on page 78.
		 Make sure that you use paper that meets our specifications. See Acceptable
		paper and other print media on page 3.
ABCDEFGH		 Check the machine’s environment. Conditions such as high temperatures and
abcdefghijk
		high humidity can increase the amount of background shading. See Safety and
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		Legal booklet.
a b c d e		 Put in a new toner cartridge. See Replacing the toner cartridge on page 71.
0 1 2 3 4
		 Put in a new drum unit. See Replacing the drum unit on page 78.
Gray background
		 Make sure that you use paper that meets our specifications. Rough-surfaced
		paper or thick print media may cause this problem. See Acceptable paper and
		other print media on page 3.
		 Make sure that the media type setting in the driver matches the type of paper you
		are using. See Acceptable paper and other print media on page 3.
		 Choose Reduce Ghosting mode in the printer driver. See Improve Print Output
		in Other Print Options... on page 32 (For Windows®) or Print Settings on page 43
	Ghost	(For Macintosh).
		 Put in a new toner cartridge. See Replacing the toner cartridge on page 71
		 Put in a new drum unit. See Replacing the drum unit on page 78.
		 The fuser unit may be contaminated. Call your Brother dealer or Brother
		Customer Service.

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