ELT 283 Logical Troubleshooting

Lecture Hours: 3
Lab Hours: 3
Credits: 4

Introduces and applies industry recognized standards, procedures, and practices for logical troubleshooting and analysis of electronic systems. Includes lab activities such as system-level, board-level and component-level troubleshooting and diagnosis, using live systems and real-world circuit faults. Promotes and supports sustainable and green technologies.

Prerequisite: ELT 244 and ELT 161, each with a grade of C or better; or equivalent course as determined by instructor.
Student Learning Outcomes:

Identify all major blocks of a complex electronic system.
Apply logical troubleshooting procedures, diagnostic techniques and test equipment in signal tracing and analysis of faults within a system.
Setup and adjust electronic systems.
Identify different types of signal interface connectors and determine required input signal levels and polarities.

Content Outline

Video Display Systems
- Principles of video signals
Composite Video Signal
- Picture information
- Sync and blanking information
Display Tubes
- Construction
- CRT operation
Video Amplifiers
- Requirements of video amplifiers
- Problems in video amplifiers
Sync Separation
- Sync signals
Principles of Color
- Additive color systems
- Composite color signal
- The interleaving process
Color Processing Circuits
- Bandpass amplifiers
- Color demodulators
- Phase detector and color
- Matrix section
Deflection Systems
- Deflection waveforms
- Types of oscillators
Vertical Deflection Circuit
- Types of circuits
- Adjustment and Setup Procedures
Horizontal Deflection Circuits
- Horizontal output circuits
RF Systems
- RF section
- IF section
- AGC
- Sound section
Power Supplies
- Linear power supplies
- Switching power supplies
- Applications
- Troubleshooting methods
- Scan derived power systems
Computer Interface Circuits
- Video cards
- Sync signals
- Horizontal drive signals
- Vertical drive signals
- RGB signals
- Analog signals
- Digital drive systems
- Analog drive systems
- Multi-sync systems
- Multi-frequency systems
- Interlaced scan methods
- Non-interlaced scan methods
Liquid Crystal and Other Type Displays
- Characteristics
- Types and configurations
- Applications
Logical Troubleshooting Methods
- Symptoms
- Diagnosis procedures
- Isolation processes
- Analysis practices
- Determining cause of component failure
- Repairing and testing procedures
- Repair certification
- Safety practices
Relation to Sustainable and Green Technologies