Computer hardware failure

1. If the optical drive does not read the disc or the reading capability is not good, do not think that the optical drive is broken. In many cases, the laser beam cannot be fully transmitted because there is much dust on the optical head. The optical drive does not have much technical content, so open the shell and do some cleaning, most of them can be reused. Be careful when handling. The coating on the surface of the bald head is fragile. Do not use too much force when cleaning, nor use too much ethanol.

2. You may have been "powered" by the computer. That's because the insulating paint on the exterior of the chassis is removed or the socket is not grounded. Generally speaking, static electricity will not have much impact on the computer. But if there is too much static electricity, there will still be some minor problems. For example, some very short solder joints are short-circuited and caused a restart. So if you have a friend who is "electrically", you can consider grounding the case shell, which will be much better.

3. If the integrated sound card of the motherboard is broken, you can consider buying a new sound card. If you switch to Crown 8738, and your motherboard is a model after 845, there will be a problem, that is, choose to shut down, but the machine restarts! In addition, friends who use innovative SB5.1, this model does not have a driver under VISTA. Some netizens have made one out, but compatibility is a problem, often blue screen. The innovative sound card can only be used in VISTA only if it is above 7.1, but there is no EXA special effect.

In addition, the sound card driver of some brand machines, even if the driver software of the right model is found on the Internet, can not be installed, or the small speaker is installed but it does not produce sound. You must go to its official website to download it. Use, it is estimated to have done a specific setting, very depressed. Especially Lenovo!

4. The current chassis generally has a front USB interface. Sometimes U disk and MP3 can be used normally, but the camera and mobile hard disk can not be used, prompting "unrecognized USB device". This is normal. When using the camera, it is best to insert it in the port behind the chassis. The data cable of the mobile hard disk will generally have two connectors. It is recommended to use all the connectors to ensure stable voltage. It is better to connect it later. Because the front is connected by a wire, sometimes a little bad contact will affect. If the system displays "USB device surge" during use, it indicates that your motherboard has a problem. If the warranty period does not expire, change it as soon as possible.

Coreless Motor product introduction:

Coreless Motor, small size, light weight (cylinder) - radial rotation/weeks to rotation (flat) - low noise, low power consumption, strong sense of vibration - simple structure - reliability - response time short Micro Vibration Motor is mainly used in mobile phones, toys, adult health supplies, etc


Coreless Motor


Function:  fast speed, suitable for aircraft model, electric toothbrush,USB fan and other products.
Coreless Motor

Characteristic: the volume is 6MM 7MM fast.

Features: small size, fast speed, dc high speed motor starting voltage 0.6v is not possible for other motors.Wear shaking head, strong vibration feeling.

Coreless Motor


Operating temperature range:

Coreless Motor should be used at a temperature of -10~60℃.

The figures stated in the catalog specifications are based on use at  ordinary room temperature catalog specifications re based on use at ordinary room temperature  (approximately20~25℃.

If a Coreless Motor is used outside the prescribed temperature range,the grease on the gearhead area will become unable to function normally and the motor will become unable to start.Depending on the temperature conditions ,it may be possible to deal with them by changing the grease of the motor's parts.Please feel free to consult with us about this.


Storage temperature range:

Coreless Motor should be stored ta a temperature of -15~65℃.

In case of storage outside this range,the grease on the gearhead area will become unable to function normally and the motor will become unable to start.


Service life:

The longevity of Coreless Motor is greatly affected by the load conditions , the mode of operation,the environment of use ,etc.Therefore,it is necessary to check the conditions under which the product will actually be used .The following conditions will have a negative effect on longevity.Please consult with us should any of them apply.

●Use with a load that exceeds the rated torque

●Frequent starting

●Momentary reversals of turning direction

●Impact loads

●Long-term continuous operation

●Forced turning using the output shaft

●Use in which the permitted overhang load or the permitted thrust load is exceeded

●A pulse drive ,e.g.,a short break,counter electromotive force,PWM control

●Use of a voltage that is nonstandard as regards the rated voltage

●Use outside the prescribed temperature or relative-humidity range,or in a special environment.

●Please consult with us about these or any other conditions of use that may apply,so that we can be sure that you select the most appropriate model.


when it come to volume production,we're a major player as well .each month,we rurn out  600000 units,all of which are compliant  with the rohs directive.Have any questions or special needed, please contact us, we have the engineer group and best sales department  to service to you Looking forward to your inquiry. Welcome to our factory.

Coreless Motor

Coreless Motor

Coreless Motor,Micro Coreless Motor,7Mm Coreless Motor,Micro 6Mm Coreless Motor

Shenzhen Shunchang Motor Co., LTD. , https://www.scgearmotor.com