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C3400n User’s Guide
94
Cleaning the LED head
Clean the LED head when printing does not come out clearly, has
white lines or when text is blurred.
1. Switch off the printer and open the top cover.
2. Gently wipe the LED head surface (1) with LED lens cleaner or
soft tissue.
Cleaning LED Head_F5_04.jpg
3. Close the top cover.
CAUTION!
Do not use methyl alcohol or other solvents on the LED
head as damage to the lens surface will occur.