QMS Magicolor 2 Desklaser, User Manual

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The laser lens may be dirty. Clean the lens as described in
chapter 6, “Maintenance.”
The corona wire inside the OPC belt cartridge might be
dirty. Clean the corona wire as described in chapter 6,
“Maintenance.”
One or more toner cartridges may be defective. Check the
toner cartridges, and install new ones, if necessary.
Clean the developer roller.
Reinstall the OPC belt cartridge. If necessary, replace the
OPC belt cartridge.
If a wide vertical white band appears:
Check the transfer drum surface. If necessary, clean the oil
off the surface.
Ensure that the transfer unit is closed.