MODULE 3 ( DESKTOP Chip Level Repairing)

Basic Electronics :

• Introduction of Electricity (Volt, Current, Ac Dc Fundamentals, Current, Voltage, Watt, Ampere, Resister, Capacitor, Diode, Transistor, LED etc)
• Use of Digital Multimeter.
• What is Circuit ? And Types of circuit
• Resistance & Colour code, capacitor, Diode, Coil & Transformer, Transistors, Mosfet, Sensor, Ic’s Complete Theory & Practical.

SMPS (Switch Mode Power Supply)

• Introduction of basic component,
• Working Principal of SMPS. block diagram
• Different Voltage Pin out Of Different Cable and Use
• Trace Out Rectifier, Filter, Oscillator, SM Transformer
• Tracing & Fault Finding of SMPS, basic Problem and Solution

MONITOR

• Introduction of Monitor, Types of Monitor
• Working of Deflection of coil, Degauss coil, Rotation of coil and signal cable connector Description.
• Circuit Diagram of monitor sections : (Power supply stage, system & system Driver stage, Horizontal Deflection stage, Vertical Driver & Output Stage, EHT Stage, Horizontal deflection stage, Vertical driver & Output stage, Video Pre-Amplifier Stage, Video Driver & Output Stage).
• Tracing & Fault finding of Monitor

UPS ( Un- Interrupted Power Supply)

• Introduction of UPS.
• Working of Relay, Transformer.
• Circuit Diagram of UPS Sections;(AVR Stage, Voltage Regulator Stage, Charging stage, Oscillator & Switching stage, AC low & AC high Senser Stage, Buzzer Stage & Deep Discharging (Battery Protection Stage).
• Tracing & Fault Finding of UPS.

MOTHERBOARD :

• Introduction of Motherboard.
• Block diagram of Motherboard, all sections working & Description
• Description of slot parts & Identification
• Block diagram & Working of VRM Section (Voltage Regulator Module)

• Working of circuit diagram VRM Section & all internal sections (Output current sense stage, Input Volt sense stage, Five bit Programmable stage), Testing & Fault finding of VRM Section.
• Clock Generator section ( Working of Clock generator section & Testing).
• Description of BIOS Section (Working & Fault finding of BIOS)
• I/O Controller section (Working of I/O & Description of all internal section :-FDC Interface stage, Keyboard interface stage, LPC interface stage, Multimode parallel stage, Input Output Port) Complete working.
• Stand by section & RTC Section working and testing.
• Soldering & D-Soldering of chip components By SMD, Iron & Hotgun.
• C.R.O (Cathode Ray Oscilloscope), Operating of C.R.O & Troubleshooting by C.R.O.
• Fault finding of Motherboard all sections through testing flow chart and use of debugger card .(Fault Diagnose through this card coding)
• CMOS set up utility & Controlling option of set up & on Board BIOS Programming.
• Introduction of BGA, Operating of BGA Machine
• Rebolling of IC’s through BGA Machine

CD-ROM, DVD-ROM, CD-WRITER, DVD-WRITER

• Working Principle
• Different Motors and Functions
• Lance Diagnostic & Setting
• Fault Finding, Logic Board
• Basic Problems and Solution

HARD DISK

• Working principle Of Hard Disk
• Head and Media Detail
• Bad Sector Removing
• Basic Problems and Solution

RAM

• Working Principle of Ram, Types of RAM
• RAM Architecture, Basic Repairing Concepts

KEY BOARD

MOUSE