General Precautions; Product Esd Information; Laser Safety Information - Metrologic MS7600 Horizon series Service Manual

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2.4 General Precautions

** ESD PREVENTION STEPS MUST BE USED DURING ANY

MODIFICATIONS AND/OR REPAIRS TO THIS UNIT! **

This product contains ESD sensitive components, or 'Electrostatic Discharge' sensitive electronic parts. Electrostatic

discharge is defined as the transfer of charge between bodies at different electrical potentials.

Electrostatic discharge has the ability to modify the electrical characteristics of a semiconductor device, possibly

degrading or even destroying it. Electrostatic discharge also may upset the normal operation of an electronic system,

causing equipment malfunction or failure.

Use of controls or adjustments or performance of procedures other than those specified herein may result in

hazardous radiation exposure. Under no circumstances should the customer attempt to service the scanner. Never

attempt to look at the laser beam, even if the scanner appears to be nonfunctional. Doing so could result in hazardous

radiation exposure.

The MS7320 unit is rated as a CLASS IIA laser product, as defined by The U.S. Federal Laser Product Performance

Standard (FLPPS): Title 21 of the Code of Federal Regulations; Part 1000; [Parts 1040.10 and 1040.11].

CLASS I, II, and IIA lasers are defined as:

CLASS I: cannot emit laser radiation at known hazard levels (typically continuous (CW): 0.4microwatts at visible

wavelengths). Users of a Class I laser products are generally exempt from radiation hazard controls during operation

and maintenance (but not necessarily during service).

CLASS II: low power visible lasers, which emit above Class I levels but emitting a radiant power not above 1mW. The

concept is that the human aversion reaction to bright light will protect a person.

CLASS IIA is a special designation that is based upon a 1000 second exposure and applies only to lasers that are "not

intended for viewing" such as a supermarket laser scanner. These laser are emitting light in the visible wavelengths (0.4

to 0.7 mm) with power not above 1mW.

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