Audi a4lcd driver fault handling method: 1, disk selection error. Because the disc format of the different car CD can not identify VCD disc and DVD disc, if the disc selection error will appear do not read the disc or the disc spit phenomenon.
2, disc scratches serious: disc scratches serious will cause the bald sensor can not correctly read digital information, resulting in the card, do not read the disc or even \"crash\". 3, car CD bald too dirty. The bald sensor is an important precision component, and the dust is easy to refract light waves or even cover the light wave transmission, resulting in no information to be read and no disk to be read. Because the sensor is expensive and damaged, it can not be repaired, so it should be cleaned by a professional maintenance technician using a professional cleaning solution.
4, car CD \"crash\" problem. Now the car CD are using digital circuit control, that is, single-chip microcomputer control circuit, if there is often a card or do not dish phenomenon is easy to cause the CPU control program error that appears \"crash\" phenomenon. The processing is relatively simple, generally can disconnect the negative electrode of the battery for more than 15 seconds or press the reset light on the car CD (mostly hidden button) to return to normal. The reason for the failure, or it may be other reasons, the various familiar solutions do not work