chip level information: August 2014

Saturday, 30 August 2014

Bios Section

Problems

Cmos Check sum Error press F1 to continuous message shows on screen
No Display
No Power
Hanging and Automatic Restart

Trouble Shoot

Check the cmos Battery Voltage (2.5v to 3.3v Dc) and check the cmos jumper is insert properly
Check the voltage on cmos jumper pin no 1 and bios ic pin no 9 if No Voltage
Check the Bios Section Related Components if voltage or ok problem is BIOS IC so Re Programming Bios Ic

Resetting BIOS password

1. Power off the computer.

2. Remove the power cable and the cabinet cover.

3. Locate the configuration jumper on the motherboard; the motherboard manual can help you in this. The jumper will be connected to the 1st and 2nd pins by default; remove it and connect the 2nd and 3rd pins with it.

4. Reconnect the power cable and switch on the system. You will find a special maintenance screen with the option to reset passwords.

5. Select the option 'clear passwords', and confirm the choice.

6. Press F10 key to save the settings and exit.

7. Remove the power cable, and put the configuration jumper back to pins 1 and 2.

8. Replace the cover and power cable, and start the system.

Mother Board Identifications

PI Mother Board

Cpu Speed = 75MHz to 233MHz
Ram Capacity = 16MB to 128MB
RAM Types = S,D,SD-RAM
HDD = 20 GB
O/S = windows 95,98

PII Mother Board

Cpu Speed = 233MHz to 450MHz
Ram Capacity = 32MB to 256MB
RAM Types = SD-RAM

HDD = 40 GB
O/S = windows 95,98 and XP,2000(this two or slow speed)

PIII Mother Board

Cpu Speed = 450MHz to 1.3GHz
Ram Capacity = 64MB to 512MB
RAM Types = SD-RAM

HDD = 80 GB
O/S = windows 95,98,XP,2000,Server

810---Yellow Colour --- celeron ---Dotted Processor
810i---Green Colour---Intel--Dotted / Platted
815--Brown Colour --Mercury--Platted / Green Processor
815E--Red Colour -- China -- Platted / Green Processor

PIV Mother Board

Cpu Speed = 1.5GHz to on words
DDR I ----------P IV -----1.5 GHz to 3.66 GHz
DDR II ----------Dual Core -----1.6 GHz to 3.66 GHz
DDR II & III ----------Core 2 Duo -----1.6 GHz to 2.9 GHz
DDR III ---------I3, I5, I7, -----1.6 GHz to on words
Ram Capacity = 128 MB to 16 GB
RAM Types = DDR I,DDR II, DDR III
HDD = 500 GB

O/S = all Latest operating systems

Processor Back Side this Type of Number is Written
1200/256/133/1.7 v
1200--Cpu Speed 1200 MHz = 1.2GHz (clock speed)
256--Cache memory (level2) 256MB
133-- FSB (Front Side Bus) 133bit
1.7v -- CPU voltage

Basic Electronics

ANOLOG DIGITAL CURRENT
- A/C & D/C Current,Soldering & Desoldering
- Balling & Reballing, IC replace Using Blower
- How to use Multi meter, SMD Rework Station
- How to check Components in Electronics
- Circuit Tracing, IC Soldering
RESISTOR:
- Carbon Resistor(Colour coding)
- Carbon Film Resisters
- Metal Film Resisters
- Chip Resistors
- Digital Resistor
DIODES:
- Rectifies Diode
- Signal Diode
- Zenar Diode
- Varoctor Diode
- Shotkey Diode
- Tunnel Diode
- LED
- Photo Sensitive Diode
FET (Field Effect Transistor)
- MOS FET
- J.FETS
IC'S:
- Power IC
- Charging IC
CAPACITOR:
- Mica Capacitor
- Polarized Capacitor
- Paper Capacitor
- Ceramic Capacitor
TRANSISTOR:
- N-P-N, P-N-P
- Silicon Transitor
- Germanium Transistor
- Power Transistor
TRANSFORMER:
- Step up-increasing
- Step Down Decreasing
- Driver (or) Protector-Constant
COIL:
- Industor Coils
- Chowk Coils
- Digital Coils
FUSES

transformer

TRANSFORMER:
- Step up-increasing
- Step Down Decreasing
- Driver (or) Protector-Constant

Laptop Burning Test

Adapter = 20v Dc
Adapter Connector = 20v Dc
Power Fuse = 20v Dc
Power Section

8pin input = 20v Dc
8pin output = 10.8v to 5v Dc

Battery Connector

With out Battery = 3.3v to 5v Dc
with Battery = 10.8v Dc

Cmos Battery = 2.5 to 3.3v Dc

Power Section = 3.3 to 5v Dc

BIOS IC

Pin no 3 = 2.5v

Pin no 6 = 1.4 to 2v

Pin no 9 = 2.5 to 3.3v

Ram Slot pin no 2 = 3.3/2.5/1.8/1.5v Dc

Ram Section 8pin input = 20v Dc

output = 3.3/2.5/1.8/1.5v Dc

CPU Section

input Capacitor = 1.4v to 2v Dc
8pin IC input = 20v Dc
8pin IC out put = 1.4 to 2v Dc

LCD Connector = 20v to 10.8v Dc

Keypad Connector = pin no 1 = 3.3 to 5v Dc

Touchpad Pin no 1 = 3.3 to 5v Dc

USB connector = vcc= 5v Dc

Friday, 29 August 2014

Desktop Burning Test

Smps Connector power voltages

Red wire = 5v DC

Orange wire = 3.3v DC

Yellow wire = 12v DC

Blue wire = -12v DC

White wire = -5v DC

Green wire = 5v DC

Violet wire = 5v DC

Black wire = GND

Cmos Battery = 2.5 to 3.3v DC

Power Jumper = 3.3v DC ( pin no 8,9 off Conditon)

Power FET Input = 5v DC

Power FET Output = 3.3v DC

BIOS IC

Pin no 3 = 2.5v

Pin no 6 = 1.4 to 2v

Pin no 9 = 2.5 to 3.3v

RAM Slot: Pin no 2 = 3.3/2.5/1.8/1.5 Volts Dc

Ram FET input = 5v dc

Ram FET out put = 3.3/2.5/1.8/1.5 Volts Dc

Cpu Section

4 pin connector = 12v Dc
input capacitor = 12v Dc
out put capacitor = 1.4 to 2v Dc
FET input = 12v dc
FET output = 1.4 to 2v Dc

Keyboard and Mouse Connector

VCC = 5v Dc
Date/clock = 5v Dc

USB connector = VCC= 5v Dc

Laptop Mother Board Chip Level Information

Basic Electronics

Soldering and De Soldering

Adapter Repairing

Laptop Assembling

Types of Motherboards

From P1 to P, Duel Core, Core2 Duo, i3, i5, i7,i9
IBM, INTEL, MERCURY, AMD ALL types
All components Identification in MB
Functions Of Components

Components Identifications

Components Checking

Iiput/Output Section Problem

Ps2,USB,VGA,LPT,LAN,COM Ports Checking
BIOS Flashing ,Power Section Problems
RAM Section Problems
Processor Section Problems

Battery section

Charging section

Lcd/led section

Dvd section

Keypad and Touch pad section

Bios section

Bios Flashing

Cpu Power section

Ram power section

Mother board power section

Burning test

Use of DBUG Cards

TROUBLE SHOOTING