Ch 7 ESD Precautions Test Quiz
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Electricity can be very dangerous if one does not ensure they are well protected. The quiz below is designed to test how knowledgeable you are when it comes to precautions on electrostatic discharge as discussed in chapter 7 of the ESD course. Give it a try and remember to be safe!
- 1.What does ESD stand for?
- A.
Electronic surveillance device
- B.
Electric shock damage
- C.
Electrostatic discharge
- D.
Electronic software distribution
- 2.ESD can damage a computer by:
- A.
Decalibrating the CRT
- B.
Damaging sensitive chips
- C.
Starting a fire in the enclosure
- D.
Damaging the laser in the optical drive
- 3.Which THREE of the following should you keep away from an ESD-safe workbench?
- A.
A. plastics
- B.
B. polyester clothing
- C.
C. foam rubber
- D.
D. Styrofoam
- E.
E. ion generator
- F.
F. alligator clips
- 4.Do NOT wear a grounded wrist strap when you:
- A.
Discharge a CRT
- B.
Handle a logic board
- C.
Open a computer case
- D.
Work at a customer site
- 5.To reduce the risk of ESD damage, handle all circuit boards by the _________________.
- A.
Pins
- B.
Body
- C.
Edges
- D.
Connectors
- E.
Exposed circuitry
- 6.To reduce the risk of ESD damage,
- A.
Ground yourself
- B.
Make sure the equipment is on
- C.
Keep the equipment on a metal surface
- D.
Touch the equipment to plastic
- 7.To reduce the risk of ESD damage, do not touch anyone who is working on:
- A.
A CRT
- B.
An expansion bay
- C.
A photo conductor assembly
- D.
A circuit board
- 8.To reduce the risk of ESD damage, use static-shielding _____.
- A.
Mats
- B.
Bags
- C.
Clips
- D.
Straps
- 9.There are four basic pieces of equipment needed to reduce the risk of damage from ESD. Which one of the following is NOT one of the four?
- A.
Grounded mat
- B.
Wrist strap
- C.
Plastic storage bags
- D.
Ground cord with alligator clips
- E.
Ground polarity tester
- 10.ESD-preventive equipment reduces the risk of damage from ESD by:
- A.
Eliminating electrostatic charge
- B.
Storing electrostatic charge
- C.
Dispersing electrostatic charge
- D.
Increasing electrostatic charge
- 11.Explain how electrostatic discharge (ESD) causes damage.
- 12.Describe: ESD Risks
- 13.ESD Solutions: The basic premise of these guidelines is to electrically connect the equipment being serviced, your body, and the workbench together to a good Earth ground, in a particular way, so that it is virtually impossible for any one of these materials to build up a static electrical charge relative to the others. Check all that apply:
- A.
Handle all components by edges
- B.
Ground yourself...except when the unit is plugged in
- C.
Don't place components on metal surfaces
- D.
Don't touch anyone while grounded
- E.
Use static-shielding bags for storing components
- F.
Keep polyester, vinyl, styrofoam away from components
- G.
70-90% Humidity is good
- H.
Use ion generator if possible
- I.
Clean ESD mats regularly
- 14.Myth or Fact: I don't use ESD precautions and have never had a problem.
- How would you know? You may be damaging parts in ways that do not show up immediately via system performance or diagnostic routines. Apple has tested for ESD damage and consistently found that mishandling components and systems creates IC damage.
- A.
Myth
- B.
Fact
- 15.Myth or Fact: I don't have time to be tied down with wrist straps and mats.
- Mishandling components creates DOA parts that slow down repairs and drive customer dissatisfaction. In addition, you can set up work areas using heel straps instead of wrist straps. This leaves your hands free.
- A.
Myth
- B.
Fact
- 16.Myth or Fact: If Apple was really serious about ESD precautions, it would not tell customers to just touch metal before replacing DIY parts.
- Customers replace far fewer parts than service technicians. Since it is difficult to train customers in the best ESD techniques, Apple asks them to practice a less effective procedure that they can readily do.
- A.
Myth
- B.
Fact
- 17.Myth or Fact: Only RAM and logic boards require ESD precautions. Everything else is shielded
- Not true. Most components have some circuitry. In addition, replacing a component such as a cable may require handling many other components that contain ICs. It is far wiser to take ESD precautions whenever you have to open up a system.
- A.
Myth
- B.
Fact
- 18.Myth or Fact: You do not have to be hardwired to ground to practice correct ESD precautions.
- There are some products which claim to ground you without the use of direct connections to ground. Such "wireless" solutions have not been proven. Use a grounded wrist strap or heel strap. Those work.
- A.
Myth
- B.
Fact
- 19.Make sure you are NOT grounded when: - you work on plugged-in equipment - you discharge a cathode-ray tube (CRT) - you work on an unplugged CRT that has not been discharged - you are performing live adjustments
- A.
True
- B.
False
- 20.Before working on any circuit board or assembly containing ESD-sensitive circuits, ground yourself and the equipment you are working on to an earth or building ground. Use a grounded conductive workbench mat and a grounding wrist strap, and ground the equipment to the mat. ESD Mat and snap fastener with lead to ground:
- A.
True
- B.
False
- 21.Never place components on any ____ ____. _____ _____ can hold a static charge that will damage sensitive electronic parts. Use antistatic, conductive, or foam rubber mats.
- 22.Do not touch anyone who is working on ESD _____ _____ or _____ _____ of any kind. If you touch someone who is properly grounded, your "zap" or body charge may not cause any damage, but just to be safe, keep your own body charge away from other technicians.
- 23.Use _____ - _____ storage bags for boards and assemblies with circuit boards on them. Before you leave your bench to take a board to a storage place, put the board in a _____-_____ bag. Leave all Apple replacement modules in their ESD-safe packaging until you need them.
- 24.Do not wear polyester clothing or bring plastic, vinyl, or Styrofoam into the work environment. The electrostatic field that surrounds these nonconductors cannot be totally removed.
- A.
True
- B.
False
- 25.Do not wear _____ clothing or bring _____, _____, or _____ into the work environment. The electrostatic field that surrounds these nonconductors cannot be totally removed.
- A.
Polyester
- B.
Plastic
- C.
Vinyl
- D.
Styrofoam
- 26.If possible, keep the humidity in the service area between 70% and 90%, and use an ion generator. Charge levels are reduced (but not eliminated) in high-humidity environments.
- A.
True
- B.
False
- 27.If you have ESD mats in your service area, it is important to clean them at least once a week. To clean them you need to use a cleaner that is specifically designed for ESD mats. Otherwise the mats will not ground equipment placed on them.
- A.
True
- B.
False
- 28.An ESD-compliant workstation is one that has equipment and materials designed to prevent ESD damage. List 4 pieces of equipment needed:
- A.
Workbench mat with ground cord
- B.
Wrist strap with a ground cord
- C.
Equipment ground cord with alligator clips
- D.
Ground polarity tester
- E.
All of the Above
- 29.IMPORTANT: When you work at a customer site, you must take the same precautions to avoid ESD damage. Take time to make the work area ESD-safe. Use a workbench mat and a wrist strap. (For travel convenience, you may want to use mats that fold up.) Be sure everything is properly grounded. Never set parts on the floor.
- A.
True
- B.
False
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