Brother HL-1435 User Manual download pdf (Page 89)

6 - 12 TROUBLESHOOTING

White Spots on black text

and graphics at 94 mm

(3.7 in.) intervals

Black Spots at 94 mm

(3.7 in.) intervals

■ If the problem is not solved after printing a few pages, the drum unit may have

glue from label stock on the OPC drum surface.

Clean the drum unit as follows:

1

Position the print sample in front of the drum unit, and find the exact position

of the poor print.

2

Turn the drum unit gear by hand while looking at the surface of the OPC

drum.

3

When you find the mark on the drum that matches the print sample, wipe the

surface of the OPC drum with a cotton swab until the dust or paper powder

on the surface comes off.

Caution

Do not try to clean the surface of the photosensitive drum with a sharp

object, such as a ball-point pen.

■ The drum unit may be damaged. Put in a new drum unit. See Replacing the

drum unit on page 5-9.

Examples of poor print

quality

Recommendation

94 mm

(3.7 in.)

94 mm

(3.7 in.)

94 mm

(3.7 in.)

94 mm

(3.7 in.)

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