Brother manual 117

Troubleshooting

Examples of poor print	Recommendation
quality
	 Check the machine's environment. Conditions such as high humidity and high
	temperatures may cause this print quality problem.
	 If the problem is not solved after printing a few pages, put in a new drum unit. (See
	Replacing the drum unit on page 78.)

White lines, bands or ribbing
across the page		5
	 If the problem is not solved after printing a few pages, the drum unit may have
	foreign material, such as glue from a label, stuck on the drum. Clean the drum
	unit. (See Cleaning the drum unit on page 86)

94 mm

(3.71 in.)  The drum unit may be damaged. Put in a new drum unit. See Replacing the drum unit on page 78.

94mm

(3.71 in.)

White Spots on black text

and graphics at 94 mm

(3.71 in.) intervals

94 mm

(3.71 in.)

94 mm

(3.71 in.)

Black Spots at 94 mm
(3.71 in.) intervals
		 The drum unit may be damaged. Put in a new drum unit. See Replacing the drum
		unit on page 78.
ABCDEFGH		 The toner cartridge may be damaged. Put in a new toner cartridge. See
abcdefghijk
		Replacing the toner cartridge on page 71.
A B C D
		 Make sure that you use paper that meets our specifications. See Acceptable
a b c d e
0 1 2 3 4		paper and other print media on page 3.
		 If you use label sheets for laser printers, the glue from the sheets may sometimes
Black toner marks across the		stick to the OPC drum surface. Clean the drum unit. See Cleaning the drum unit
	page	on page 86.
		 Do not use paper that has clips or staples because they will scratch the surface
		of the drum.
		 If the unpacked drum unit is in direct sunlight or room light, the unit may be
		damaged.

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