Sindoh M612 - Manual (Page 273)

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Maintenance and Troubleshooting
5
Trouble 5: When pie charts or bar graphs are printed, vertical lines with various widths are printed.
Troubleshooting: 1) Contaminants such as paper powder or nap are on the head lens.
Clean up the head lens.
2) The toner cartridge may have a problem. Replace the new toner cartridge.
3) The drum cartridge may have a problem.
Replace the new drum cartridge.
Trouble 6: While or black lines are printed on the OHP or paper.
Troubleshooting: 1) The toner may be low.
Shake the cartridge to use the remaining
toner.
2) The toner cartridge may have a problem.
Replace the toner cartridge.
3) The drum cartridge may have a
problem. Replace the drum cartridge.
Trouble 7: Pale images or repeated spots are printed.
Troubleshooting: 1) The toner cartridge may have a problem.
Replace the new toner cartridge.
2) The drum cartridge may have a problem.
Replace the new drum cartridge
Trouble 8: The text outline is not clear and image quality is low.
Troubleshooting: Change printer resolution from the printer driver.