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Exam
Online Examination with Online Verified Certificate.
CLASS
TOPICS
WEAK-1
What is motherboard? And Laptop motherboard blockdiagram explain:
a) Laptop Motherboard Block Diagram -Explain
b) What is difference between dual core board and core i5, i7 board?
c) Motherboard chip level service tools list
Basic electronics introduction:
what is difference between electrical and electronics
What is current and volt?
What is difference between AC and DC? AC current/volt-DC current /volt
Difference between normal electronics and SMT electronics
What is multimeter? How use multimeter?
RESISTOR:
What is resistor and its working function?
Types of resistor
Resistor colour coding
Difference between normal resistor and SMT resistor
How find smd resistor value? And its checking method
CAPACITOR:
What is capacitor and its working function?
Types of capacitor
Difference between normal capacitor and SMT capacitor
How find capacitor value? And its checking method
Student soldering practical-resistor and capacitor
INDUCTOR AND TRANSFORMER:
What is inductor and its working function?
Types of inductor
Inductor checking method
What is transformer and its working function?
Types of transformer
transformer checking method
DIODE:
What is diode and its working function?
Types of diode
Difference between normal diode and SMT diode
Diode checking method
TRANSISTOR:
What is transistor and its working function?
Types of transistor-mosfet,Fet,PNP and NPN
Difference between normal transistor and SMT transistor
Transistor checking method
Students soldering practice:
Mosfet and diode
Integrated circuits [IC]:
What is ic ? and its working function?
Types of ic
Various packages of ic
Smd double side ic removing and fixing by using SMD REWORK STATION
Smd four side ic removing and fixing by using SMD REWORK STATION
WEAK-2
How to Solve Laptop Power Adapter Problem? - Practical:
Laptop Battery Charging Slowly
Laptop are not power on
No output voltage for adapter [0 volt]
Less output voltage for adapter [16v/17v]
Adapter over heating
Earth shocking problem
Power Section-How Laptop Power Section Works?:
How super IO ic works? And its function-Block diagram
How motherboard power on?
How work battery section and step- down Voltage regulator section?
Adapter V In Section [AC-Mode] -Practical:
Problem: Not power on Laptop both battery power and adapter power mode [Laptop Dead]
Symptoms: power LED are not glowing /FAN are not rotate,
When plug in adapter to laptop then OFF adapter power LED>>>>
After unplug adapter from laptop then adapter indicator LED is ON.
When plug in adapter >>>then the adapter indicator LED is blinking.
Battery Terminal pin outs
Battery charger IC pin outs and its function
Adapter Voltage [VIN] IN circuit tracing/fault finding method and its troubleshooting tips
Battery Charge Line tracing/fault finding method, and its trouble shooting tips
Battery Charging Section [Charge Mode]-Practical:
Problem 1: Laptop working by Adapter power mode only, but are not charging battery /and are not working battery power mode
Symptoms: power LED are not glowing /FAN are not rotate,
When plug in adapter to laptop then OFF adapter power LED>>>>
After unplug adapter from laptop then adapter indicator LED is ON.
When plug in adapter >>>then the adapter indicator LED is blinking.
Problem 2: laptop battery charging very slowly and charge percentage are not increase
Problem 3: After remove battery from laptop >then laptop working properly through adapter power>then connect battery to laptop >are not power on laptop both power mode
Problem 4: laptop battery power quickly discharged >quickly goes low battery level
Problem 5: when power on laptop >power LED is glowing and fan are rotating >now battery LED is blinking continuously [on then off] then suddenly off laptop power
DC mode:
Battery Power Terminal [Discharge Line] tracing /fault finding method and its trouble shooting tips
PMOS and NMOS charging circuit comparison
STUDENT PRACTICE
Adapter vin circuit and battery charging circuit
[AC mode,DC mode and Charge mode]
WEAK-3
Step-Down Regulator Section: MAIN STEP-DOWN VOLTAGE REGULATOR CIRCUIT [3.3V & 5V] Circuit Fault Finding/Tracing and its Troubleshooting Tips
a) What is step down regulator section problem? [laptop power fail or dead board]
b)step-down ic pin outs and its function
c) What is always power?
Student practice:
Step down regulator circuit
CPU V core circuit fault finding -practical:
CPU Voltage Regulator Section Circuit Fault Finding/Tracing and its Troubleshooting Tips [below 1.5V]
a) What is cpu regulator circuit problem? {Power on laptop >fan are rotating >then suddenly board is off and cpu over heating problem}
b)cpu circuit N-mosfet connectivity explanation
b)cpu circuit Mosfet and capacitor checking method
Student practice
CPU V core circuit fault finding
MEMORY [DDR1/DDR2/DDR3] VOLTAGE REGULATOR SECTION Circuit Fault Finding/Tracing and its Troubleshooting Tips [2.5V/1.8V/1.5V]:
What is memory regulator circuit problem?
a)power ok>fan are rotate but no display both LCD screen and external monitor
b) Power on laptop >fan are rotating >then suddenly board is off
CHIPSET VOLTAGE REGULATOR SECTION Circuit : Fault Finding/Tracing and its Troubleshooting Tips [1.5V/1.05V]
a)What is chipset regulator circuit problem?
b)Power on laptop> the chipset produce abnormal heat >then board is suddenly off [BGA chipset short]
c)Poor display for both LCD screen and external monitor {BGA chipset weak}
d)No display for both LCD screen and external monitor [BGA chipset fail]
STUDENT PRACTICAL:
Ram and chipset voltage regulator circuit
WEAK-4
Laptop motherboard voltage checking method for power fail laptop motherboard [motherboard Dead]
a) How check adapter volt power line [19V]?
b) How check battery terminal volt in laptop motherboard [12V]?
c) How check always volt in power button and IO chip near?
d) Where to check regulated output voltage[3V/5V/1.5V/1.05V and cpu voltage]?
LAPTOP -No Display Problem-PRACTICAL:
Laptop Power ON ok /power LED is Glow and CPU cooler FAN is Rotating continuously...but No Display Problem for Both LCD screen and External VGA
How check Northbridge Video chipset voltage?
How check south bridge chipset voltage?
How check DDR1/DDR2 & DDR3 RAM voltage?
Latest i5/i7 cpu motherboard complete voltage checking method
Clock Frequency Checking-CRO Practical:
No Display Problem for Both LCD screen and External VGA
What is clock and frequency? [HZ/KHZ/MHZ]
How check system clock crystal frequency by CRO [14.3 MHz]?
How check system clock generator clock output frequency?
BGA REWORK PRACTICAL:
No Display Problem for Both LCD screen and External VGA
BGA CHIPSET Dry soldering method
BGA chip replacement by using BGA Rework Machine
BGA chip reballing method
LCD Screen Power Supply Section:
No display problem only LCD screen but external VGA monitor ok
LCD Screen power supply circuit fault finding /circuit tracing and its trouble shooting tips
No LCD signal and no Backlight problem
LCD signal OK but No backlight problem [Black screen]
No LCD signal but backlight ok problem [white screen]
LCD screen vertical lines problem
What is difference between LED and CCFL Backlight?
Backlight CCFL inverter circuit function
STUDENT PRACTICAL
BIOS FLASHING METHOD -Practical:
What is BIOS?
Why reprogram BIOS? [Password problem/Bios Rom checksum error message/laptop not booting problem/no display problem/post Error message problem and Etc...]
Bios chip pin outs and capacity identification
Bios file backup method using Bios Programmer kit
Audio section problem -practical:
No any sound signal for laptop [audio driver and sound setting is ok]
Speaker /microphone and head phone are not working
Head phone and mic are working but speaker no sound signal
Speaker sound signal is very low
Poor sound [distortion] signal for speaker
Left side speaker ok but right side speaker no sound signal
USB power circuit problem and its troubleshooting:
How solve USB Port not working problem -practical
Laptop online reference website [laptop board circuit/BGA chip/power ic/io ic /mosfet and etc]
Laptop motherboard parts and tools shop address list collection
