
Using the ESD Ground Strap
Purpose
The purpose of the ESD (Electrostatic Discharge) ground strap is to preserve the inherent
reliability and quality of electronic components handled by the Service Representative.
The strap should be used whenever handling the circuit boards or any other ESD sensitive
components.
Procedure
Note
All procedures requiring use of the ESD ground strap will contain a caution referring to this
procedure.
1 Switch off the main power switch.
2. Make sure the power cord connects the machine to the wall outlet. The power cord and
wall outlet must have ground.
3. Connect the claw end of the grounding cord to a chassis ground, such as earth wires
screwed to chassis ground, unpainted frame or an unpainted bracket secured to the
frame.
4. Connect the snap end of the blue cord to the snap on the adjustable wriststrap.
5. Place the adjustable wriststrap securely on the wrist.
Wait for one minute to let the electrostatic be discharged from your body.
6. ESD sensitive components can now be handled without causing any ESD related
damage.
7. New replacement PCBs and ESD sensitive components, as well as old defective PCBs
should be handled during unpacking and repacking using the ESD ground strap. During
the transfer from or to the packaging material, the PCB should be placed in the ESD
bag the replacement PCB came in.
CAUTION
ESD Hazard! ESD (Electrostatic Discharge) can cause software crashes, data
and/or communications problems. Failure to use proper ESD procedures will
cause damage to electronic components (example: PCBs). ESD problems can be
minimized by maintaining all machine ground connections, ensuring the proper
handling of circuit boards/ sensors, refer to this procedure 3.1.
- Use ESD protection when working near PCBs. Failure to use ESD protection is
likely to result in a PCB failure.