Brother HL HL-2230, Service Manual

Page: 60 / 175

2-37
Confidential
4.2.15 White spots
4.2.16 Black spots
User Check
• When the white spots at 32.5 mm are intervals, replace the toner
cartridge with a new one.
• If the same problem occurs after printing a few pages, the adhesive
of the label or the like, paper powder or dirt may be attached on the
surface of the exposure drum. Wipe off the dirt on the exposure
drum. (Refer to User’s guide, and perform the Drum Cleaning.)
• When the white spots at 94.2 mm are intervals, replace the drum
unit with a new one.
Step Cause Remedy
1
Dirt on the electrodes of the drum
unit and the printer body
Clean the electrodes of the drum unit and
printer body. (Refer to Fig. 2-8, Fig. 2-9. )
2
High voltage power supply PCB
ASSY failure
Replace the high voltage power supply
PCB ASSY.
3 Main PCB failure Replace the main PCB ASSY.
User Check
• When the black spots at 32.5 mm are intervals, replace the toner
cartridge with a new one.
• If the same problem occurs after printing a few pages, the adhesive
of the label or the like, paper powder or dirt may be attached on the
surface of the exposure drum. Wipe off the dirt on the exposure
drum. (Refer to User’s guide, and perform the Drum Cleaning.)
• When the black spots at 94.2 mm are intervals, replace the drum
unit with a new one.
Step Cause Remedy
1
Dirt on the electrodes of the drum
unit and the printer body
Clean the electrodes of the drum unit and
printer body. (Refer to Fig. 2-8, Fig. 2-9. )
2
Dirt on the heat roller Refer to “2-34 How to clean the heat roller” ,
and clean the heat roller.
3
Scratch and Dirt on the heat roller
(Black spots at 53.4 mm)
Replace the fuser unit.
4
High voltage power supply PCB
ASSY failure
Replace the high voltage power supply
PCB ASSY.
5 Main PCB failure Replace the main PCB ASSY.