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Confidential
4.2.12 White vertical streaks
4.2.13 White horizontal streaks
4.2.14 Faint print
User Check
• Check if there is no dust in the gap between the toner cartridge and
drum unit.
• Replace the toner cartridge with a new one.
• Check the printer's environment. High temperature and high
humidity or low temperature and low humidity conditions can cause
this problem.
• Damp (wet) paper might be used. Try to change to freshly
unpacked paper.
• Replace the drum unit with a new one.
• Leave the printer for a while as the power remains ON.
Step Cause Remedy
1 Laser unit failure Replace the laser unit.
User Check
• This problem may disappear If print several sheets of page. Print
several sheets of page if the printer has not been used for a long
time.
• Replace the drum unit with a new one.
• Replace the toner cartridge 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.)
User Check
• Check that the printer is installed on a level surface.
• Replace the toner cartridge with a new one.
Step Cause Remedy
1 Main PCB failure Replace the main PCB ASSY.
2 Laser unit failure Replace the laser unit.
3 Fuser unit failure Replace the fuser unit.
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