EPAS 5

• This module was designed and written with you in mind. It is here to help you develop knowledge, skills, and attitudes in the performance of the Electronics Product Assembly and Servicing tasks.
• The scope of this module permits it to be used in many different learning situations. The language used recognizes the diverse vocabulary level of students. The lessons are arranged to follow the standard sequence of the course.
• The module is composed of one lesson which is all about Test and Inspects Assembled Electronic Products
• After going through this module, you are expected to:

  • Identify the Safety Requirements in Test and Inspect Assembled Electronic Products
  • Familiarize with the different types of Electronics Product Testing
  • Appreciate the importance of implementing 5s in Electronic Product Testing
• Equipment used to discharge electrical charges produced by the human body

  • ESD
• Chance


  Exposure to an unpleasant situation
• Safety practices


  Set of rules or practices intended for the safe execution of work
• Damaged tools are not recommended to be used in electronics work
• Toolbox


  Best place for electronic hand tools and equipment
• Impact Resistance


  Way to test materials of the product will do upon impact
• Compression Strength

  Capacity of the materials to withstand loads tending to reduce the size
• Tensile Strength


  Resistance of the materials to breaking under tension
• Fracture Toughness


  Ability of the materials containing a crack to resists fracture
• Testing Methods


  Used to test components and product performance
• Seiri


  Action involving going through all the contents of a workplace to determine which are needed and which can be removed
• Seiton


  Housekeeping procedures that ensure that all times are organized, and each item has a designated place
• Seiso


  Cleaning and maintaining the newly organized workplace
• Seiketsu


  Goal of creating standards for both organizations and processes
• Shitsuke


  Japanese term for the 5S that means "Sustain"
• In every field of work, there are safety precautions and practices to be followed to prevent accidents.
• Types of hazards

  • Chemical Hazard
  • Organizational Hazard
  • Ergonomic Hazard
  • Biological Hazard
  • Physical Hazard
  • Electrical Hazard
• Sections of Power Supply

  1. Transformer

  2. Rectifier

  3. Filter

  4. Regulator
• Safety rules to be understood and strictly followed to avoid accidents while working

  • Avoid wearing loose clothing
  • Report injuries or accidents
  • Never put fasteners or small metal particles in mouth
  • Never throw tools
  • Keep working areas clean
  • Secure help when carrying heavy tools
  • Never use dull or damaged tools
  • Know and observe safety measures for each tool or operation
• Safety requirements to be followed

  • Follow all cautions, warnings, and instructions
  • Ensure voltage and frequency rating matches equipment
  • Use properly grounded power outlets
• Occupational health and safety practices to be observed

  • Passages must be free of obstruction
  • Treat every wire as live wire
  • Check tools and equipment to be in A1 condition
  • Instructions must emanate from person-in-charge
  • Do not engage in play while at work
  • Never use unfamiliar tools
  • Keep hand tools organized
  • Use only good condition tools
  • Report accidents and injuries
  • Keep work area clean and orderly
• Personal safety guidelines

  • Never work alone
  • Always use protective eyewear
  • Do not go barefoot
  • Never assume electrical device is safe
  • Be cautious when performing power-related tests
  • Do not wear jewelry
• Visual Inspection


  External process of verifying part attributes like condition, markings, lead conditions, dimensions, and surface quality
• Aging Test


  Accelerated life testing focused on running board through many cycles of normal operation in short time
• Mechanical Testing


  Designed to ensure the product can withstand the mechanical stresses it will encounter in normal use
• Visual inspection

  Verifying attributes of parts such as components condition, part markings, evidence of a secondary coating, lead conditions, dimensions, and surface quality
• Aging Test


  Also called a "Soak Test", accelerated life testing focused on running the board through as many cycles of normal operation as possible in a short period
• Accelerated Life Testing

  Rapidly cycling power systems; starting, stopping, and reversing motors; cranking microprocessors to full speed; charging and discharging batteries
• Accelerated Life Testing


  • Very specific to the circuit board and what it is trying to accomplish, focused on how a product survives in the normal usage case in the real world, often combined with environmental stress testing
• Mechanical Testing


  Ensures that materials are suitable for their intended applications, includes methods such as tensile strength, compression strength, impact resistance, fracture toughness, and fatigue
• Compression Strength


  A material or structure's ability to withstand loads tending to reduce the size, as opposed to loads tending to elongate
• Impact Resistance


  A way to measure how well a material or product will do when dropped or attempted to break, a value for its ability to absorb energy without breaking
• Fracture Toughness


  The ability of the material containing a crack to resist fracture
• Fatigue


  A weakness in materials caused by repeated variations of stress
• Tensile Strength


  The resistance of materials to breaking under tension
• Power Supply Voltage Testing


  Checking the voltage output of the circuit or electronic product