#Easa part 66 B1,B2 MODULES EXAM MCQs QUESTION BANK

Electro Static Discharge or ESD

                                    

Short for ElectroStatic Discharge, ESD is one of the few things you can do to damage or destroy your computer or parts in your computer. Like the shock you receive when rubbing your feet on the carpet and touching something metal, ESD can occur when working in your computer and can cause damage to components. ESD can occur without the user feeling a shock and only occurs while working on the inside of the computer or handling an expansion card or other hardware.

Preventing ESD and grounding yourself

The best method of preventing ESD is to use an ESD wrist strap, grounding mat, or grounding workbench. However, because most users do not have access to such items, we have included the steps below to help reduce the chances of ESD as much as possible.

Tip: If you plan on working on the inside of the computer more than once, we highly recommend purchasing and using an anti-static wristband.

Zero potential

  Most importantly, make sure you and the computer are at zero potential by continuously touching an unpainted metal surface of the chassis or the computer power supply case.

Standing - Always be standing when working inside the computer. If you are sitting on a chair or the floor, it can generate more electrostatic.

Cords  or Leads

 Disconnect everything from the back of the computer (e.g., power cord, monitor, and USB cables)

Clothes

 Make sure not to wear any clothing that conducts an electrical charge, such as a wool sweater.

Weather Condition

 Electrical storms can increase the ESD risk; if it can wait, try not to work on a computer during an electrical storm.

Accessories 

 To help reduce ESD and help prevent other problems, it is also a good idea to remove all jewelry.

Surface 

 You should be standing on a hard surface, and the computer or other electrostatic sensitive devices should be on the table.

ESD tools

                                

When working inside the computer, you should have at the very least a wrist strap to help protect the sensitive components from ESD damage. If you run a business that deals with lots of sensitive equipment a grounding mat and even a grounding table is also highly recommended.

See our tools definition for a listing of other computer repair tools.

Other ESD related terms

Listing of other ESD related terms 

Antistatic

Antistatic bag

Antistatic device

Antistatic mat

Antistatic spray

Static

Wrist strap