3-3
Make sure that the device and the floor are well grounded.
Take dust-proof measures for the equipment room.
Maintain the humidity and temperature at a proper level.
Always wear an ESD-preventive wrist strap or antistatic clothing when touching a circuit board or
optical module.
Place the removed MPU, LPU, memory module, or CF card on an antistatic workbench, with the
face upward, or put it into an antistatic bag.
Touch only the edges, instead of electronic components when observing or moving a removed
MPU, LPU, memory module or CF card.
Wearing an ESD-preventive wrist strap
Follow these steps to wear an ESD-preventive wrist strap:
Step1
Put on the ESD-preventive wrist strap, making sure that the strap makes good skin contact.
Step2
Plug the ESD-preventive wrist strap connector into the ESD socket on the chassis.
Step3
Make sure the chassis is well grounded.
For security, check the resistance of the ESD-preventive wrist strap. The resistance between human
body and ground should be in the range of 1 to 10 megohms.
