China Mobile Phones Hardware Repair Guide

China Mobile Phones Hardware Repair Guide

Today, mobile phone repair will share about China mobile phones repair guide. As we know that today, china phone dominate the mobile phones market. With the cheaper price, many people prefer choose china phones than others.

Here is the china mobile phones hardware repair guide for you. Download from this link.

Nokia 3200 LCD Problem (Missing Component)

 Nokia 3200 LCD Problem (Missing Component)

n a previous post, I've written and share picture guide / techniques in dealing with defective hardware jumper on the Nokia 3200. Although the phone is included in group old phone, but the reality is still a lot of my clients who come fix this phone.

Here I will share how to troubleshoot LCD Nokia 3200 is due to the missing component. The component that is often missing is the resistor that is located close to the power button. This often happens because the power button Nokia 3200 quite fragile, so easily damaged if frequently suppressed. This is often an effect of these two resistors. If you do not have the spare part to replace the resistor, you can make jumper technique by connecting the two points resistor.

So, when there is a problem on LCD Nokia 3200, you simply check point as shown in the following figure, and if the resistor is located near the power button missing, which is marked red in the picture, please do jumpers.

Download the picture here. 

Nokia X3 Lights Repair | Picture Help

Nokia X3 Lights Repair | Picture Help

Nokia X3-02 lights problem can be repaired by replacing V2420. The location of that part showed by the picture below.

Nokia X3-02 Microphone Not Working | Picture

Nokia X3-02 Microphone Not Working | Picture 

HelpNokia X3-02 microphone is quite different with most Nokia phones, it is mounted to the board. When your Nokia X3-02 mic is not working, you can check the points like showed by the picture below.

 

 

 

Nokia X3-02 Network Problem | No Signal | Picture Help

Nokia X3-02 Network Problem | No Signal | Picture Help

Network or no signal problem on a cell phone can caused by many reasons. The most common is because the solder lack. Solder lack is a condition where the tin quality is not good. In Nokia X3-02, the network problem can caused by bad contact on N7510 and N7520. When you find the Nokia X3-02 network problem, you can try to re-hot the N7510 or N7520 integrated circuit. Look and save the picture below.

Nokia X3-02 Power Switch Repair | Picture Help

Nokia X3-02 Power Switch Repair | Picture Help

Nokia X3-02 power switch is integrated with the keypad, although very rare, but maybe someday you find a problem with your Nokia X3-02 power switch, you can follow this picture guide. The picture below show you how to make a direct jumper from the power button.

Nokia X3-02 Ringer Problem | Picture Help

Nokia X3-02 Ringer Problem | Picture Help

Ringer for Nokia X3-02 managed by N2120, if you have ringer problem with your Nokia X3-02, you can try to replace the driver. But, before you do it, I recommend you to check the ringer circuit one by one, maybe there are broken paths. You can use the Nokia X3 schematic diagram to find the ringer circuit and part location. The location of N2120 is shown by the picture below.