Q1 NOTES.docx

**L1. OCCUPATIONAL HEALTH AND SAFETY (OHS)** - is a discipline concerned with preserving and protecting human resources in the workplace. WHY IS OHS IMPORTANT IN COMPUTER SYSTEM AND NETWORK CONFIGURATION PLANNING AND PREPARATION? - Health and safety are of the outmost importance. People d...

**L1. OCCUPATIONAL HEALTH AND SAFETY (OHS)** - is a discipline concerned with preserving and protecting human resources in the workplace. WHY IS OHS IMPORTANT IN COMPUTER SYSTEM AND NETWORK CONFIGURATION PLANNING AND PREPARATION? - Health and safety are of the outmost importance. People do not just realize just how dangerous it can be, usually they often ignore the risk involved in opening and operating a computer. It is vital to stay safe in every working conditions. Whether you are a professional or a beginner staying safe must be put into priority to prevent troubles and damage to any person or to any object in a work area. - Safe working conditions help prevent injury to people and damage to computer equipment. A safe workspace is clean, organized, and properly lighted. A hazardous computer component must dispose or recycled properly. Make it a habit to follow guidelines that direct how to dispose specific items. 1\. Do not work alone so that there's someone who can take care of you in case of emergency. 2\. Always power off the computer and unplug the computer before working on it. 3\. Take away any liquid near your working area to avoid getting electrocuted or accidentally damaging computer parts. 4\. Be careful with tools that may cause short circuit. 5\. Always ground or discharge yourself before touching any part of the computer. careful with tools that may cause short circuit. 6\. Do not use excessive force if things don't quite slip into place. 7\. Clean the area before and after using it to maintain sanitation and prevent accidents. 8\. Hold the components on the edges and do not touch the Integrated Circuit (IC) parts. 9\. Always wear personal protective equipment's (PPE) in accordance with the organization's OHS procedures and practices. 10\. Make sure that the pins are properly aligned when connecting a cable connector. 11\. Contingency measures during workplace accidents, fire and other emergencies are recognized. 12\. Use brush, compressed air or blower in cleaning the computer system. **L2.FOUR TYPES OF COMPUTER HARDWARE TOOLS** **1. ELECTRO-STATIC DISCHARGE (ESD) TOOLS** It is easily generated by friction on carpets, tile flooring, clothing, hair, fabric, and etc. The friction of moving air alone will charge suspended particles and cause the buildup of static electrical charges on people and objects in the environment. To control the discharge of electrostatic electricity, the tools below are needed. 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. 2\. HAND TOOLS A hand tool is a device for performing work on a material or a physical system using only hands. Hand tools can be used manually or electrically powered, using electrical current. Flat Head Screwdriver used to loosen or tighten negative slotted screws. Philips Head Screwdriver used to loosen or tighten positive slotted 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 as a "nut driver" used to tighten nuts in the same way that a screwdriver tightens screws. Long-nose Pliers used for holding, bending and stretching the lead of electronics component or connecting wire. Allen Wrench also known as "hex key" is used to drive bolts and screws with hexagonal socket heads. Wire Cutter used to strip and cut wires. Tweezers used for picking up objects too small to be easily handled with the human fingers. Soldering Iron used to join two or more metal conductors with the support of soldering lead melted around it. Desoldering Iron used to unsolder unwanted parts or component in the circuit with the support of soldering pencil. Part Retriever used to retrieve parts from location that is too small for your hand to fit. Flashlight used to light up areas that you cannot see well. **3. CLEANING TOOLS** Having the appropriate cleaning tools is essential when maintaining or repairing computers. Using these tools ensures that computer components are not damaged during cleaning. 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. **4. DIAGNOSTIC TOOLS** Computers are easier to use and more dependable with each new generation of hardware and operating system update, but that does not mean they are problem-free. Here are the most popular tools for diagnosing computer problems. 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. LAN Tester designed to test most network cable wiring. **L3.1. TOOLS AND EQUIPMENT MAINTENANCE** All tools and equipment must be properly maintained so that workers are not endangered. Regulations require inspections of tools, machines, and equipment before use. Preventive maintenance is the systematic care and protection of tools, equipment, and machines in order to keep them in a safe, usable condition, limit downtime and extend productivity. We must always be aware that maintenance tasks themselves are potentially hazardous and can result in injury. The successful maintenance program is:  well organized and scheduled,  controls hazards,  defines operational procedures, and  trains key personnel. The degree of detail to include regarding tools and equipment maintenance will depend on the kinds of tools/equipment used. Some construction equipment may have very specific inspection and maintenance requirements. Electronic equipment may have different maintenance requirements. Hand tools may require only basic maintenance. Power tools should be maintained in good working order. This may be limited to ensuring that blades/bits are replaced when needed and those guards or other safety devices are operable, and any damaged electrical cords/plugs are repaired or replaced. Damaged or defective equipment/tools should be tagged and removed from service. Most manufacturers can provide maintenance schedules for their equipment. Large companies typically have a comprehensive maintenance program due to the capital investment and/or leasing agreements. Smaller companies may lease equipment and maintenance services may be included in the leasing agreement. General requirements for tools and equipment maintenance include:  Obtaining a copy of the maintenance schedule recommended by the manufacturer  Ensuring that maintenance is performed as required  Ensuring that the person(s) performing the maintenance are competent (e.g. licensed mechanic)  Retaining records of maintenance/service conducted  Specifying who is responsible for overseeing equipment maintenance and where the records are kept  Set up a system for removal and tagging of damaged or defective tools and equipment **L3.2.PROPER STORAGE OF TOOLS, PARTS, AND EQUIPMENT** To ensure that tools and equipment remain in good condition and last for a long time, store them properly. Properly stored tools and equipment will be easy to find when needed and are less likely to be lost. **Good practices include:**  Parts should be properly stored and labeled.  Tools should be properly placed on the board and labeled. Consider drawing the shapes of the tools on the board so that they always get put back in the same position.  Use bins for storing small parts.  Consider making an individual (or individuals) responsible for the good maintenance of tools and parts. **Benefits:**  Tools and parts are kept in good condition and are easy to find  Costs are reduced.  Productivity is increased because time is not wasted looking for tools, parts and equipment.  Workshop staff develop a sense of responsibility and pride in their work. PC DISASSEMBLY Step 1. Unplugging Step 2. Opening the Outer Shell/Case 3\. Removing the System Fan 4\. Removing the CPU Fan Step 5. Removing the Power Supply Step 6. Removing the CD/DVD Drive(s) Step 7. Removing the Hard Drive Step 8. Removing the Memory Module (RAM) Step 9. Removing the Motherboard PC ASSEMBLY Step 1. Prepare your workplace Step 2. Prepare the Motherboard Step 3. Install the CPU Step 4. Install the CPU Fan with the Heat Sink Step 5. Install Memory (RAM Modules) Step 6. Place the Motherboard into the case Step 7. Connect the Power Supply Step 8. Install Graphics/ Video Cards Step 9. Install Internal Drives Step 10. Install the Add-in Cards