Experiment - 48 :- TO CHECK VARIOUS PART OF LAPTOP

AIM :-  TO CHECK  VARIOUS PART OF LAPTOP

TOOLS / EQUIPMENT

1.  Laptop - 01 No.
2.  Multimeter - 01 No
3.  Tool Kit - 01 No.

PROCEDURE: -

STEP - 1 

TO CHECK  THAT LAPTOP  IS WORKING PROPERLY OR NOT

1. Remove Laptop Battery   
   
   
   
   
   
2.  Run It  On The AC Adapter Only                                                                                                                                                                                                                                             
3.  If It Works Perfectly Then Problem is in Battery Not in Laptop.

STEP - 2 

TO CHECK  LAPTOP's  MOTHER IS WORKING PROPERLY OR NOT

1. Set the 20V DC Multimeter.
2. Test the back of the connector with the black multimeter sample and put the black sample with pin 15, 16, or 17( GROUND  Pins).

STEP - 3 

TO CHECK  LAPTOP's  PSU And  MOTHER Testing For Short/Open Circuits.

• Unplug the AC Power Computer and allow any excess charge to drain for several minutes.

         set the meter to the lowest ohm configuration and touch  the sample's leads  to zero per  meter together.
     

         touch both leads to the computer chassis bare metal, the zero leading  should  be the    same.

• remove the ATX Connector from the motherboard carefully . Keep  the black sensor on the chassis metal and use red conductor to inspect the PSUA/C  ground pin  and the black wire  pins on the D/C Connector , all should register zero.

• Keep the Black lead and use the red sample to inspect the chassis of the D/C  connector for the colored wire pin values. all colored wire should be 550 or Higher.

• Remove The CPU From The Socket of the Motherboard  Use The ATX 20- Pin Chart Indicate the PINS on the connector of the board. 

         Maintain  the black  lead on the chassis and use the red lead  on the motherboard  to test the GND pins :  pins 3,5,7,13,15,16 and 17 should return zero reading. Any other reading suggests that a            connector may be defective 

STEP - 4 

TO CHECK  LAPTOP's  PSU And  MOTHER Testing For Short/Open Circuits.

• The Main Activity is a visual inspection of the motherboard, swelling  or blown condensers  are typical  source of motherboard  problem or disappointment.
• Check the top end of every condenser to see if it swells or spills, which  is a sign that   the condenser has blown.
• You track swelling  or blown condensers.it probably causes PC motherboard       problems.  A Hard Disk might give you hints of faults, such as blue screens or missing files. However , a mother board will stop working unexpectedly. 
• For the CPU, a visual check is expected to remover the CPU from your PC.