】 【Weak current College on-board audio daily maintenance and trouble shooting.

1, often moist little cotton swab wipe

Audio in the cassette machine pressure belt pulley and CD player heads are easy to accumulate dust. Cd player, the most important part is the laser head, because the laser head is vulnerable parts and more expensive to maintain. Although it is now part of car audio in the design process to consider the issue of the dust, but protection is necessary, you can often use a damp cotton swab wipe of small cassette, cassette and cd-disc slot and a sound system of the Panel. The correct approach is to use the wet cloth dust gently sucking down. As for the press and the knob of the cleanup, you can once again use a cotton swab.

2. use the cleanup tool cleaning tape and CD-ROM

In addition to audio hosts kept clean, tape and cd CD-ROM to ensure clean. Tapes and CDs of dirt will not only affect the playback of sound quality, even on the audio damage caused. Cd machine laser head in high speed operation, if you run into dust, cause the laser head deviation from the original sound track laser, causing distortion and damage to the laser head. It is understood that the tapes and CDs of cleanup tool in most of the video shop you can buy in.

3, only those few swapping discs slowly

Spring is the car audio with most of the laser head damage, because the climate is dry and prone to static electricity. When entrusting his best not to touch by hand directly, don't take intermediate, slowly, try not to frequently change discs, up to the light as possible.

4, volume, do not suddenly drop to largest

Audio in use to avoid suddenly put the volume to the maximum, this loudspeaker will burn, coil on the amplifier will impact, suddenly increase the amplitude will be burnt power amplifier.

Common fault

Car audio due to environmental reasons, generally very difficult to achieve the same grade home audio effect, in the use process than the home audio system more prone to some failures, here are some common car audio trouble and trouble shooting method.

1. audio left and right channel volume is different

Troubleshooting: first checks whether the host balance knob in the center position, and then check the front-stage input and output level control knob is around, as well as expanding machine input sensitivity set is left and right channels, such as still does not exclude that will host the signal line flop, Horn position smaller side will become larger, if you will, that the host has problems, while the back issues.

2, a-channel treble sound

Troubleshooting: check the minutes of the damper wiring is connected, and then use the meter from tone-side to measure have voice, may be wrong will trumpet line input termination to bass output.

3. noise

Troubleshooting: check the rca signal Terminal is connected to the negative side, if the host side of the rca signal output negative side have circuit breaker, measurement of available electricity meters, the negative side of the enclosure is connected with the host.

4, the volume is large and small

Troubleshooting: check the power supply ground and car shell contact is loose, and then check the front-and back-level input and output rca is normal, and finally to see whether the normal sensitivity knob.