Brother HL-1030, 1240, 1250 service manual White spots, User Check

CHAPTER 6 TROUBLESHOOTING

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White spots

User Check

(1)If the problem is not solved after printing a few pages, the drum unit may have glue from label stock on the photosensitive drum surface. Refer to Step 1 in the table below and NOTE in the next page.

(2)The drum unit may be damaged. Install a new drum unit.

Possible cause	Step	Check	Result		Remedy
Drum unit failure	1	Are the white spot at 94mm	Yes	1)	If toner or glue remains
		intervals?			stuck, wipe it off gently with a
					cotton swab. (Refer to NOTE
					in the next page.)
				2)	If the drum surface is
					scratched, replace the drum
					unit.
Drum unit failure	2	Is the problem solved after	Yes	Replace the drum unit.
		replacing the drum unit?
No toner	3	Is the toner in the toner	Yes	Replace the toner cartridge with
		cartridge almost empty?		a new one.
Print paper	4	Is the problem solved after	Yes	Damp (wet) paper might be
				used. Recommend to change
		changing to specified freshly
				freshly unpacked paper.
		unpacked paper?
Environment	5	Does the problem still appear	Yes	1) Replace the drum unit.
		after the printer has warmed		2) Advise the user of the
		up?			specified print environment.

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