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9. Machine Maintenance and Cleaning
10.1 Laser Maintenance and Cleaning
10.1.1 When the laser is used continuously for 4-5 hours,
remove the light shielding cover and the nozzle to check if
the laser lens is dirty.
10.1.2 If the lens is dirty, use a cotton swab to wipe it clean
and keep the lens free of contamination.
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