Lesson 3 using hand tools
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The document discusses proper use of various hand tools for repairing computer hardware. It describes electrostatic discharge tools like anti-static wrist straps and mats that prevent static electricity damage. Hand tools discussed include screwdrivers, pliers, and part retrievers. Cleaning tools mentioned are lint-free cloths, compressed air, and cable ties. Diagnostic tools covered are multimeters and loopback adapters. Guidelines are provided for safe use of these tools, such as connecting wrist straps to the computer chassis and not overtightening screws. Cautions include not using magnetized tools near electronics and checking for issues if excessive force is needed.
Lesson 3 using hand tools
- 1. Melvin D. Punzalan Subject teacher USING HAND TOOLS
- 2. Environmental Safety and Health Program requires the following: • All tools be kept in good condition with regular maintenance • The right tool be used for the job • Each tool be examined before use AND damaged or defective tools NOT to be used • Tools be operated according to manufacturer’s instructions • The right protective equipment for the tool and activity be used
- 3. HARDWARE TOOLS The Hardware tools are grouped into four namely; Electro - Static Discharge (ESD) Tools Hand Tools Cleaning Tools Diagnostic Tools
- 4. Electro - Static Discharge Tools • Anti-static wrist strap – used to prevent ESD damage to computer equipment. • Anti-static mat – used to stand on or place hardware on to prevent static electricity from building up.
- 5. Hand Tools Flat head screwdriver – used to loosen or tighten slotted screws. Philips head screwdriver – used to loosen or tighten crosshead screws Torx screwdriver - used to loosen or tighten screws that have a star-like depression on the top, a feature that is mainly found on laptop. Hex driver – sometimes called a nut driver, is used to tighten nuts in the same way that a screwdriver tightens screws.
- 6. Cont. Needle-nose plier – used to hold small parts. Wire cutter – used to strip and cut wires. Tweezers – used to manipulate small parts. Part retriever – used to retrieve parts from location that are to small for your hand to fit. Flashlight – used to light up areas that you cannot see well.
- 7. Cleaning Tools Lint-free cloth – used to clean different computer components without scratching or leaving debris. Compressed air – used to blow away dust and debris from different computer parts without touching the components Cable ties – used to bundle cables neatly inside and outside of a computer Parts organizer – used to hold screw, jumpers, fasteners and other small parts and prevents them from getting mixed together.
- 8. Diagnostic Tools • Multimeter – used to test the integrity of circuits and the quality of electricity in computer components. • Loopback Adapter – used to test the functionality of computer ports.
- 9. Proper Use OF ESD Tools • Proper Use of Anti Static Wrist Strap 1. Connect the cable to the metal chassis of the computer. 2. Wrap the strap around your wrist. 3. The connection will keep your body at the same voltage (potential) as the computer. 4. Attach the wire on the same side of the equipment as the arm wearing the antistatic wrist strap to keep the wire out of the way while you are working. CAUTION: Never wear an antistatic wrist strap if you are repairing a monitor or CRT.
- 10. Cont.. • Proper Use of Antistatic Mat 1. Lay the computer on the mat. 2. Connect the computer to the mat with the cable. 3. Connect the mat to a reliable electrical ground with its cable. 4. Now, you and the computer are at ground potential.
- 11. Proper Use of Hand Tools 1. Use the proper type and size of screwdriver by matching it to the screw. 2. Do not over tighten screws because the threads may become stripped. CAUTION: If excessive force is needed to remove or add a component, something may be wrong. CAUTION: Magnetized tools should not be used around electronic devices. CAUTION: Pencils should not be used inside the computer because the pencil lead can act as a conductor and may damage the computer components
- 12. Proper use of Cleaning Tools • To clean computers and accessories: Use mild cleaning solution and lint- free cloth to clean computer cases, outside of monitor, LCD screen, CRT screen and mouse. Use compressed air to clean heat sinks. Use Isopropyl alcohol and lint-free swabs to clean RAM. Use hand-held vacuum cleaner with a brush attachment to clean a keyboard. CAUTION: Before cleaning any device, turn it off and unplug the device from the power source.