Brother HL-1030, 1240, 1250 service manual White vertical streaks, White horizontal stripes

CHAPTER 6 TROUBLESHOOTING

I-9

White vertical streaks

User Check

(1)Try to wipe the scanner window with a soft cloth.

(2)The toner cartridge may be damaged. Install a new toner cartridge.

(3)Check the printer’s environment. High temperature and high humidity conditions can cause this problem.

(4)Damp (wet) paper might be used. Try to change to freshly unpacked paper.

Possible cause	Step	Check	Result	Remedy
Transfer failure	1	Is the transfer roller scratched?	Yes	Replace the drum unit.
Condensation	2	Has condensation occurred	Yes	Try to print several pages or
		inside the printer?		leave the printer 2 hours to allow
				it to reach room temperature.

I-10

White horizontal stripes

User Check

(1)Check the paper used meets the recommended paper specifications. A rough surfaced paper, damp paper or thick media can cause the problem.

(2)Check that the appropriate media type is selected in the printer driver.

(3)The problem may disappear by itself. Try printing multiple pages to clear this problem especially if the printer has not been used for a long time.

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

Possible cause	Step	Check	Result	Remedy	Ground
					contacts
Developing bias	1	Are the developing bias	Yes	Clean the electrodes
contact failure		contacts between the printer		at both sides.	➃
		body and toner cartridge dirty?

6-31