how to test laptop lcd screen

when you buy a new laptop or buy a replacement laptop LCD screen panel,you must want choose no dead pixel (burned pixel),no light pixe Lcd screen panle.who like trouble?but if you have not specialized LCD test Software,you would read our article.It does not matter,I tell a good way to you,
Operating system has been installedClick the “Start” → “Run”,input”command”(Windows 9X/Me operating system) or “cmd” (Windows NT/2000/XP operating systems),at this time,the “Command Prompt” window be open.input”debug “and click”enter”key.the screen will show “?”,the laptop run debug application.pushing”Alt+Enter”,Maximized windows fill the entire screen for test laptop Lcd screen.
Operating system has not been installedReboot your laptop ,enter DOS,input “debug”and click”enter”key.the screen will show “?”,the laptop run debug application.
input command“F B800:00 F9F 20 70”Full-screen white，* P1 I2 o* ^0 j& ^0 T. V$ U& ~’ C“F B800:00 F9F 20 40”Full-screen red，! h. U0 V4 A” y: ” `” b6 _“F B800:00 F9F 20 20”Full-screen green，! `3 b4 M- ]1 p6 N. G“F B800:00 F9F 20 10”Full-screen blue.
add gridding
“F B800:00 F9F C5 07 C4 07”Full-screen white gridding， {8 c/ 8 C9 k! t” g“F B800:00 F9F C5 04 C4 04”Full-screen red gridding，, l: m& J( d’ Z0 G Q! d“F B800:00 F9F C5 02 C4 02”Full-screen green gridding，/ I0 N/ V- k- Q/ x ?+ M“F B800:00 F9F C5 01 C4 01”Full-screen blue gridding.the way is very convenient. we do not need install test software,but also we achieve the purpose of testing.. t: y, h9 W, X. Q2 T$ [; G$ u/ ]+ L9 `4 {7 J6 g( ?$ ~
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Repair and Remove IBM Thinkpad X22 lid hooks and hinges

So far,we have publish some guide,How to replace laptop keyboard,how to replace laptop LCD,How to replace laptop.How to replace laptop fan,how to replace laptop cover.Now,I talk an case,Repair and Remove IBM Thinkpad X22 lid hooks and hinges.our Customer have a IBM Thinkpad X22 laptop,but this laptop damaged one of the lid hooks.It is considered the lid hooks and the hinges as the most likely potential troubles of X2-series. Therefore I take some photos to share the Repair process.Attention,this guide should only be used to IBM Thinkpad X22 X23 X24 laptop.because this hooks are different between X20 with X21.ok,Enough of this talk, let’s get right down to business!
Repair and Remove the lid hook
You will need the following tools*screwdriver*knife

First, remove the screws cover on the front bezel with the knife and Remove all screws
Remove the cover on edges of the display bezel.
this picture show Remove this screws on edges of the display bezel.Tips: No need to remove the upper screws which fix the hooks now.


Remove the three screws from the front bezel.

Flex the insides edges of the display bezel with a knife until the bezel disengages from the display enclosure.

Slide the whole bezel until the bezel disengages from the display enclosure.
Now,We remove the two screws on the hinges.Now it is possible to separate the LCD panel from laptop
disengaged

Be Carefully Release the LCD cable.
In order to avoid scratching the LCD panel, you can put something upon the keyboard.

The first-phase preparations have been finished
Now remove the screws which fix the hooks.

Finally, install the new hook, then assemble the whole laptop.

Repair and Remove the Hinges
Remove the three screws which fix the laptop keyboard.
Push the keyboard from the palmrest side to the LCD side, then it is easy to remove.
Release the zero insertion force (ZIF) connector to which the Laptop keyboard cable is attached and disconnect the keyboard cable Release the ZIF connector to which the pointing stick cable is attached and disconnect the pointing stick cable .Remove the keyboard.
Insert a thin flat-bladed tool under the hinge cover of the switch cover and lift up until the switch cover disengages from the Laptop,Remove the switch cover.

Remove the four screws fixing hinges.Next action is pretty simple,removed this hinges
Install the new hinges, then assemble it.
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How to search and replace your Laptop Motherboard

How to search and replace your Laptop Motherboard?when your laptop motherboard has suffered a irreparable damage,your laptop will not boot up or some functions of your laptop stop working intermittently.you just only geting a new laptop motherboard and disassemble your laptop and manually replace the laptop motherboard with a new one.today,laptoppartwholesale.com tell you How to search and replace your Laptop Motherboard?at first,what is laptop motherboardThe Laptop motherboard is a large,Printed circuit board that is used to connect all of the different components on a laptop.
You will need the following tools to complete the removal and replacement laptop motherboard■Magnetic screwdriver■Phillips P0 and P1 screwdrivers■Torx8 screwdriver■Flat-bladed screwdriver
Setp 1:
Search and Buy a corresponding replacement laptop motherboard
Navigate to the support website of your laptop or check the user’s manual for got the part No of motherboard your laptop uses.some model’ parts number is locatedon the bottom of your laptop.you will go to ebay or www.laptoppartwholesale.com and buy a corresponding replacement laptop motherboard.Power off the your laptop and close the lid of screen .overturn the laptop computer so that the bottom is facing up toward you. Hold down the battery’s latch and then remove the battery.
Setp2:
Remove all of the screws from the bottom of the case. swing it up and to left the two plastic covers near the middle of the case that protect the hard drive and RAM modules. Pull off the hard drive directly out of the case and set it aside. Grab both ends of the exposed RAM module and remove it from the case . Repeat the process with the second RAM module if your particular model of laptop has a second memory module.
Setp 3:dismantle the disc drive on the left side of the laptop directly out of the case and set it aside. Turn the computer back over and open up the screen’s lid. Push a flat object, such as a screwdriver head, underneath the large plastic piece above the laptop keyboard that houses the indicator lights and power button. Pop the plastic piece off the laptop. Disconnect the cable connecting the plastic piece to the laptop motherboard.
Setp 4lift down the laptop keyboard from the case and then disconnect the cable connecting it to laptop motherboard. Remove the screws holding the LCD hinges to the case. Slide the card from its port on the Laptop motherboard and set it aside.lift down the laptop hinges and set them aside. Locate the network card at the left end of the laptop motherboard.
Step 5Remove the screws holding the graphics card to the laptop motherboard if your model of laptop has an extra graphics adapter. Slide the card off the laptop motherboard and set it aside. Remove the screws holding the laptop fan and heat sink unit to the laptop’s processor. Remove the them and then pull the processor off its motherboard socket. Set both pieces aside.
Step 6Pull out the screws along the edges of the motherboard. Lift the motherboard straight up and remove it completely from the laptop’s case. Line up the ports on the sides of the new laptop motherboard with the corresponding holes on the case. Push the motherboard down into the case and reconnect the screws.
Step 7Reassemble all of the internal parts you removed to get to the laptop. Set the plastic piece and keyboard back onto the case. Replace the battery and then reconnect the hard drive, disc drive, RAM modules and plastic covers. Replace all of the screws. Power on the HP laptop and wait for the operating system to load completely to make sure the motherboard is working.
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Dismantle antediluvian IBM ThinkPad X22

Today, our client sent his antediluvian IBM ThinkPad X22 2662 for repair.This IBM ThinkPad laptop is manufactured in 2002. I am curious about the internal structure of the antique.Let us with my picture to realize the doyen of IBM laptop.
IBM ThinkPad X22 is very thin. You can contrast it whit an mobile phone.

ibm x22 laptop
Up until just a couple of years ago, thin and light laptops either lacked the power of the larger portables or needed an expansion dock for complete functionality. the picture show the expansion dock of IBM X22 laptop

IBM X22 laptop expansion dock
it is very important to a laptop.IBM X22 equipped 12.1” XGATFT.because the laptop is break so we can use the lcd.Now,we open this laptop.

IBM X22 Open
we can see the internal structure of IBM x22.Laptop keyboard,HHD,Laptop fan,laptop motherboard.it is very important to a laptop.IBM X22 equipped 12.1” XGATFT.ThinkPad X 22 uses Travelstar HDD, this HDD is 15G and 4200pr, 2MB cache. The thickness is 9.5mm.

IBM X22 HDD
ThinkPad X22 adopt Intel 830MP chipset.

IBM X22 830MP Chipset
this picture show the Memory slot of this laptop.the laptop only support PC133 SDRAM.

IBM X22 Memory slot
heatsink of IBM X22 have not laptop fan, Benefit from the low Power of this CPU.

IBM X22 heatsink
IBM ThinkPad use Intel Pentium III-M which is M733MHz.

Intel Pentium III-M
end
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