After that, you're the computer maintenance engineer, 13th.

Tenth chapter audio and video class fault

An example of a definition

and multimedia playback, production-related hardware and software failures.

Second, possible phenomenon of failure

1, Play CD, VCD or DVD, such as error, panic;

2. When playing multimedia software, there is no sound or no image;

3, play sound when there is a murmur, sound abnormal, silent;

4, sound too small or too large, and can not adjust;

5, not recording, playback of the recording noise is very large or small voice;

6. Abnormal installation of equipment.

Iii. parts that may be involved

Audio, video card or device, motherboard, memory, optical drive, disk media, chassis and so on.

Iv. Points of judgement/order

1, before the maintenance of the preparation

1 In addition to the necessary maintenance tools, should be prepared to the latest device drivers, patches, motherboard bios, the latest DirectX, standard format audio files (CDs, WAV files), video files (VCD, DVD);

2 familiar with the various settings of multimedia application software, such as the setting of sound properties under Windows, the setting of sound card/video card with application software, the setting of video box/card application software, etc.

3 targeted understanding of the user's information, mainly understand: whether the failure to install new hardware, software, reinstall system (including a key recovery).

2. Environmental inspection

1 Check whether the voltage in the mains is within the allowable range (220V±10%);

2 Check the equipment power supply, data line connection is correct, plug is fully inserted, such as speakers, video box audio/video connection, whether the switch is open, the speaker volume is adjusted to the appropriate size;

3 Observe the user's operation method is correct;

4 check around the use of the environment, there are no high-power interference equipment, such as: air-conditioning, back projection, large-screen color TV, refrigerators and other high-power electrical appliances. If there should be a considerable distance (more than 50 cm);

5 Check the motherboard BIOS settings are adjusted, you should first restore the factory state, especially to check the CPU, memory is overclocking.