Canon i-SENSYS LBP151dw User Manual page 243

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Black Spots Appear
Have you cleaned the fixing unit?
Clean the fixing unit.
Fixing Unit(P. 249)
Reverse Side of Paper is Smudged
Have you loaded paper that is smaller than the size of the print data?
Check to make sure that the paper size matches the size of the print data.
Printouts Are Grayish
Is the machine installed in a location where it is exposed to direct sunlight?
Move the machine to a location where it is not exposed to direct sunlight.
Relocating the Machine(P. 271)
Was the toner cartridge been left in direct sunlight for a long period of time?
Store the toner cartridge in an appropriate location for two to three hours, then try printing again. This may
solve the problem. If the problem persists, replace the toner cartridge.
Troubleshooting
238

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Troubleshooting

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