Sunday, 24 July 2011

Nokia 2220s Keypad Light problem ways solutions jumpers tips and tricks of Nokia 2220s Keypad Light problem.

Nokia 2220s Keypad Light problem ways solutions jumpers tips and tricks of Nokia 2220s Keypad Light problem.
Here are the links of repairing diagrams of Nokia 2220s Keypad Light problem ways solution.
you can solve easly Nokia 2220s Keypad Light problem by the repairng diagrams of Nokia 2220s Keypad Light problem which are given below.
If you have some knolage about repairing so you can easly pick the repairing process of Nokia 2220s Keypad Light problem which is shown in figure.

If you can't understand the repairing diagrams which are given below so don't worry.
I am also giving you a littel discription of this image.

Here is the discription of Nokia 2220s Keypad Light repairing diagram.

Here's the slide Nokia 2220 Keypad Light Not Working Problem. This solution below show the complete line connection paths or tracks of the Nokia 2220s Keypad Light Circuit That May Easily Useful to fix the device.
You May refer to the solution below and locate components Each Corresponding That price range for the Nokia 2220s Keypad backlight circuit. May you do have a check and test procedure on the highlighted line connection components spots.
Here's the some hints to fix the keypad light problem on Nokia 2220s:
1. Check the LED Using a multimeter. Damaged replace if found.
2. Check all the connected Resistors. Damaged replace if found.
3. Check the positive and negative LED supply voltage line paths, apply if open jumper or cut-off.
4. Check the filter coil and LED Driver ICs Also check the supply voltage VBAT.
5. Rework or replace the LED Driver ICs.
6. Check and replace the switching transistors.
7. If there is no one in the above procedure, fix the problem. Try to rework or replace the UEM IC. end ..
The above procedures where clause just another options to fix Nokia 2220s Keypad light problem, others May have another ways to Easily locate the problem.

Link 1


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