• Author / Uploaded
• Sundara Rami Reddy

Citation preview

BASIC - ELECTRONICS: Module 1: Introduction to Electronics:  Voltage , Current , Resistance & Power  Differences between AC & DC.  Using of Multi meter.  Using of Soldering Iron.  Using of SMD Re workstation. Module 2: Electronic Components:  Resistors  Capacitors  Diodes  Coils & Inductors  Transistors & FET  ICs  Checking of components  Replacing of components Module 3: Digital Electronics:  Differences between Analog & Digital Electronics.  Different type of digital electronic devices. LAPTOP CHIP LEVEL: Module 1: Introduction to Laptop:  Differences between Laptop & Desktop.  Different type of Ports of Laptop  Dismantling & Assembling of Laptop

Module 2: Laptop Motherboard Working:  Block diagram of Laptop Motherboard.  Different sections in Laptop Motherboard.  Functions of each section and chips.  Startup sequence of Laptop motherboard (Always , Suspend and Run Powers)

Module 3: Laptop Schematics 

 

Identifying Motherboard model number Tracing Laptop motherboard

DESKTOP MOTHER BOARD Module 5: Troubleshooting of Laptop              

Adapter Problems Battery charging problems Battery backup problems No Display / Dead Problems. Dull Display Problem. Restarting problems Hanging problems Over heating problems. LCD white screen problems Keyboard Problems Touch pad problems HDD Problems DVD Drive problems Removing BIOS Passwords

        



Identifying different control chips on motherboard o North Bridge o South Bridge o I/O Controller o Charger IC o Power Supply IC and FETs o LAN IC o Audio IC o BIOS Chip Module 4: Testing of Laptop Motherboard:   

Checking of Voltages (S5,S3 and S0) in each Stage Checking of Different signals in each stage Checking Short circuit in Laptop Motherboard

LCD AND LED    

Working block diagram of LCD monitor Power supply, inverter, MLC checking with online testing LVDS related problems Trouble shooting problems o No display o Dull display o White display o Colours problems o Junk display

Checking with live LCD monitor TROUBLE SHOOTING DESKTOP SMPS PROBLEMS ALSO

Working Functionality Of Mother Board Block diagram of mother board Connectors and ports checking SMPS Voltage checking on mother board Processor core voltages checking Power ICS, SMD IC checking with online I/O section related problems BIOS chip related problems(Flashing) NO POWER, NO DISPLAY HANGING PROBLEMS CHECKING IN LIVE MOTHER BOARDS

PRINTERS AND SCANERS DOT MATRIX PRINTERS    

Asembling and deasembling Section wise checking Paper feeding problem(sensors) Head related problems

LASER/INK JET PRINTERS  

Asembling and deasembling Paper feeding tonner catridge refelling