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1.5 Precautions on Static Electricity

1.5 Precautions on Static Electricity
Caution - Observe the precautions related to electrostatic discharge (ESD) as described in Table 1-1 to ensure the safety of personnel and the system.
Table 1-1  Precautions on ESD
Item Precaution
Wrist strap Wear an antistatic wrist strap when handling printed boards and units containing electronic components.
ESD mat An approved ESD mat provides protection from static damage when used with a wrist strap. The mat also acts as a cushion to protect the small parts that are attached to printed circuit boards.
Antistatic bag/
ESD safe packaging box
After removing a printed circuit board or unit, place it in the antistatic bag or ESD safe packaging box.
How to use a wrist strap
Wear a wrist strap in such a way that the inner metal surface (A in Figure 1-5) of the wrist strap band is in contact with your skin. Connect the clip (B in Figure 1-5) directly to the chassis.
Caution - Do not connect the wrist strap clip to the ESD mat. Connecting the wrist strap clip to the chassis ensures that the operator and units have the same electrical potential, thus eliminating the danger of static damage.
Figure 1-5  Wrist Strap Connection Destinations
Figure 1-5  Wrist Strap Connection Destinations