Dell MX003 - Manual (Page 33)

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L ABELS
The MS6130 scanner is either a CDRH Class II laser system or an IEC
Class 1 Laser System. Your unit will have a CDRH Class II caution label or
LASERKLASSE 1 label affixed below the model number label. The model
number/avoid exposure label is located on the bottom of the scanner’s head.
The following are examples of these labels:
M AINTENANCE
Smudges and dirt can interfere with the proper scanning of a bar code.
Therefore, the output window will need occasional cleaning.
1. Spray glass cleaner onto lint free, non-abrasive cleaning cloth.
2. Gently wipe the output window.