User Manual
Table Of Contents
- User’s Guide HL-5440D/HL-5450DN
- User's Guides and where to find them?
- Using the documentation
- Table of Contents
- 1 Printing Methods
- 2 Driver and Software
- Printer driver
- Windows®
- Macintosh
- Software
- 3 General Information
- 4 Options
- 5 Routine Maintenance
- 6 Troubleshooting
- A Appendix
- Index
114
Routine Maintenance
5
Cleaning the drum unit 5
If your printout has white or black dots at 94 mm intervals, the drum may have foreign material, such as glue
from a label stuck on the drum surface. Follow the steps below to solve the problem.
a Make sure that the front cover is closed and the power cord is plugged in.
b Turn on the machine and wait until the machine is in Ready mode.
c Press Go two times. The machine will print the drum dot check sheet.
d Leave the machine turned on for 10 minutes for the internal fan to cool the extremely hot parts inside the
machine.
e Turn off the machine.
f Press the front cover release button and then open the front cover.
g Take out the drum unit and toner cartridge assembly.