Laptop Motherboard Chiplevel Service Training (Level- 2)

COURSE  SYLLABUS
SECTION – 1
Laptop Motherboard and its Architecture

• What is Motherboard? And its function
• Laptop Motherboard Block Diagram – Explain
• Motherboard parts view and its name
• What is difference between dual core board and core i5, i7 board?
• Motherboard chip level service tools list
• SMD Hot air Blower, Micro soldering station using method
• Flat tip and Pencil Tip soldering iron
• Solder lead, paste and de-soldering Wick
• Board cleaning solution IPA
• Zoom lens and tweezers sets
• Universal charger using method
• DC power supply equipment using method
• Flash ROM [BIOS] programmer-RT 809 Review
• Hot air gun and its purpose
• Digital multimeter and its usage
• Capacitance Farad meter and its usage

SECTION – 2
SMT BASIC ELECTRONICS

• What is difference between electrical and electronics
• What is current and volt?
• What is difference between AC and DC? AC current/AC volt and DC current /DC volt?
• Difference between normal electronics and SMT electronics
• Types of electronics components – passive & active
• What are 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
• Resistor soldering practice

SECTION – 3
CAPACITOR

• What are capacitor and its working function?
• Types of capacitor –SMD tantalum capacitor, ceramic capacitor and solid aluminum capacitor
• Difference between normal capacitor and SMT capacitor
• How find capacitor marking code value? And its checking method
• Capacitor Farad checking method
• SMD capacitor short checking method for laptop motherboard CPU, RAM and battery connector surrounding circuit
• Capacitor soldering practical

SECTION – 4
INDUCTOR

• What are inductor and its working function?
• Various types of inductor
• Difference between SMD inductor and SMT Fusible inductor
• How find inductor marking code value? And its checking method
• Inductor Soldering practical

SECTION – 5
DIODE

• What are diode and its working function?
• Types of diode –Power diode, zener diode, LED, Signal diode
• What is Dual diode? and its function
• Difference between 2 pin diode and 3 pin diode
• SMD diode short checking method
• SMD diode soldering practice

SECTION – 6
TRANSISTOR

• What are Transistor and its working function?
• Types of Transistor-Mosfet, PNP and NPN
• Difference between P-channel Mosfet and N-channel Mosfet
• 3 pin Mosfet 6 pin Mosfet and 8 pin Mosfet pin outs and datasheet
• N channel and P channel Mosfet marking code or serial number
• N channel and P channel Mosfet Checking method
• NPN and PNP transistor checking method
• Mosfet series and parallel connectivity
• Mosfet soldering practice

SECTION – 7
Integrated Circuits IC or Chip

• What is IC?
• Fabrication Structure of IC
• Difference between Analog and Digital IC
• How work IC and its function?
• Various Packages Of IC -Double sided pin Ic,4 sided Pin IC
• QFN Lead free IC and BGA Ball IC
• What is IC datasheet and how to download datasheet?
• Various types of ic’s soldering method through SMD rework station

SECTION – 8
Various Sections of Laptop Motherboard

• Adapter Voltage Input [Vin] Section
• Battery Charging Section
• Battery Voltage Input Section
• IO Section [Kbc]
• CPU [Vrm] Step-Down Regulator Section
• Clock Generator Section
• Ram Step-Down Regulator Section
• Video Chipset Step-Down Regulator Section
• Rom Bios Section
• Lcd Screen Power Section
• Audio Section
• How Laptop Power Section Works? Battery 12v power mode and AC Adapter 19V power mode
• How super IO IC works? And its function-Block diagram
• How motherboard power on?
• How work battery section and step- down Voltage regulator section

SECTION – 9
Adapter V in Section – 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

 SECTION – 10
Battery Charging Section – Practical

• Problem 1: Laptop working by Adapter power mode only, but are not charging battery /and are not working battery power mode
• Symptoms: Battery Charge Led Are Not Glowing/plugged in not charging
• 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
• Battery Power Terminal [Discharge Line] tracing /fault finding method and its trouble shooting tips
• Battery charging IC Short checking through DC power supply Equipment

 SECTION – 11
Main Step-Down Voltage Regulator Section – Practical

• Main Reg circuit Fault Finding/Tracing and its Troubleshooting Tips [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
• What is always power?
• Laptop power failure problem. There no always voltage-how to dry soldering Main reg IC by using SMD Rework station
• Laptop dead power problem-how to soldering main reg ic by using SMD Rework station
• Main regulator IC short checking through DC power supply Equipment

SECTION – 12
CPU V Core  [VRM] Section -Practical

• CPU Voltage Regulator Section Circuit Fault Finding/Tracing and its Troubleshooting Tips [below 1.5V]
• What is CPU regulator circuit problem? {Power on laptop >fan are rotating >then suddenly board is off and CPU over heating problem]
• CPU circuit N-mosfet connectivity explanation
• CPU circuit Mosfet and capacitor checking method
• CPU v core IC pin outs functions and datasheet
• Power on No display problem-how to dry solder CPU v core IC solder Pins by using SMD Rework station
• CPU v core IC Short checking through DC power supply Equipment
  

SECTION – 13
Memory Voltage Regulator Section

• Ram Circuit Fault Finding/Tracing and its Troubleshooting Tips [1.8V/1.5V & 1.2V]
• What is memory regulator circuit problem?
• Power ok>fan are rotate but no display both LCD screen and external monitor
• Power on laptop >fan are rotating >then suddenly board is off
• RAM circuit Mosfet and capacitor checking method
• RAM Reg IC pin outs functions and datasheet
• Power on No display problem-how to dry solder Ram Reg IC solder Pins by using SMD Rework station
  

SECTION – 14
Video Chipset Voltage Regulator Section

• Fault Finding/Tracing and its Troubleshooting Tips [1.5V/1.05V]
• What is chipset regulator circuit problem?
• Power on laptop> the chipset produce abnormal heat >then board is suddenly off [BGA chipset short]
• Poor display for both LCD screen and external monitor {BGA chipset weak}
• No display for both LCD screen and external monitor [BGA chipset fail]
• How to dry solder Video chipset by using SMD Rework station or Hot air Gun?
  

SECTION – 15
Practical Review for Previous Sections-1

• Section- 9 Adapter V in Section – Practical review
• Section- 10 Battery Charging Section – Practical Review
• Section- 11 Main Step-Down Voltage Regulator section – practical review
  

SECTION – 16
Practical Review for Previous Sections- 2

• Section-12 CPU V core [VRM] Section –practical review
• Section-13 Memory Voltage Regulator Section practical review
• Section-14 Video chipset Voltage Regulator Section practical review
  

SECTION – 17
Laptop Motherboard Voltage Checking – Practical
Laptop motherboard power fail [motherboard Dead problem]:
How check adapter volt power line [19V]?

• How check battery terminal volt in laptop motherboard [12V]?
• How check always volt in power button and IO chip near?
• Where to check regulated Main output voltage 3V/5V
• Power on no display problem:
• DDR2 & DDR 3 Ram voltage checking 1.8V/1.5V
• CPU working voltage checking below 1.5v
• Video chipset [INTEL or AMD or ATI or NVIDIA ] voltage checking  05v/1.5v/1.25v
• Other sections problems:
• Hard disk 5V checking, keyboard 3.3V checking, touchpad 5v checking
• Wifi 3.3v and LAN Chip 3.3v & 1.8v checking

SECTION – 18
LCD Screen Power Supply Section

• No display problem 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-solution
• LCD signal OK but No backlight problem [Black screen]-solution
• No LCD signal but backlight ok problem [white screen]
• LCD screen vertical lines problem
• How to check LCD screen power supply 6 pin Mosfet?
• LCD screen VCC power supply circuit tracing and fault finding

SECTION – 19
FLASH ROM -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
• Rom BIOS IC  soldering method
  

SECTION – 20
Audio Section Problem -Practical

• No any sound signal for laptop
• 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
• Audio circuit voltage checking method
• Others
• Laptop online reference website [laptop board circuit/BGA chip/power ic/ io ic / mosfet and etc]
• Laptop motherboard exam