Sindoh M611 - Manual (Page 248)

Maintenance and Troubleshoot
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Trouble 9: Printing function is OK, but wrong top and side margins.
Troubleshooting: 1) Check if the correct size is set from the printer setting or
printer driver.
2) Check if the correct margin is set from the application.
Trouble 10: Too thick print .
Troubleshooting: 1) Set correct toner density from the printer setting or
printer driver.
2) Check if paper is wet.
3) Do not use rough paper.
4) Check if the media type in the print setting matches the
paper in the tray.
5) Check if the paper type in the control panel matches
paper in the tray.
6) The toner cartridge may have a problem.
Replace the toner cartridge.
Trouble 11: The device outputs blank paper. .
Troubleshooting: 1) The toner is low. Replace the new toner cartridge.
2) Software may have a problem.
Switch off and on the device.
3) Check if the cartridge is unpacked.
4) Check if the cartridge is installed correctly.
5) If the problem persists after above steps are taken,
contact the customer support.
Trouble 12: All or part of paper is printed in black.
Troubleshooting: Check if the cartridge is installed properly.
Open the front cover and reset the cartridge