Composition of a car CD player. How to repair?

Use a medical cotton swab dipped in absolute alcohol and wipe the laser head. The laser head is dirty for a long time and cannot read the disc.

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A complete set of car audio is divided into five parts:

1.host, (cd, vcd, ***).

2.Front soundstage speakers and crossovers.

3.Rear soundstage speakers.

4.Power amplifier.

5.Bass. The host is the sound source.

The power amplifier is divided into one power amplifier, two power amplifiers, four power amplifiers, five power amplifiers and six power amplifiers, usually two and four are more common, the role of the power amplifier is: the rated power of the host is very small, when pushing the horn at this time, the power is not very sufficient, the horn does not have enough power to push, it is difficult to play the best effect.

Front sound field speaker: Generally on the front two doors of the car, some on the instrument panel, generally choose to upgrade, the front sound field is recommended to install a set of speakers.

Rear sound field speaker: generally on the rear door of the car, but also on the rear partition, generally choose to install a coaxial horn, mainly to supplement the details of the sound field. (The rear sound field can also be installed with a set of speakers, but the front sound field must not use coaxial speakers).

Speakers are generally divided into: (set and coaxial) set speakers are divided into (three-way and two-way frequency).

The meaning of two-way frequency is: the treble of the speaker is separated separately, this is the tweeter (called treble boy in the industry), two mid-woofer and two crossovers. Three-way frequency: The high, mid, and bass of the horn are all separate units.

The function of the crossover: it is to separate the treble and the bass independently, so that the sense of hierarchy will be more ideal, the set of speakers is generally installed in the front sound field, that is, installed in the front door, because listening to ** is mainly the driver and co-driver of the front sound field to listen.

Car knowledge: Do you really know how to use the CD player in the car? It turns out that this is the way to operate, and it is a long knowledge.

Summary. Wiring method:

In parta, acc, b+, ill are connected to +12v, GND is connected to -12v, and everything else is empty;

In partb, four "4 and 5W" speakers are connected accordingly.

The maximum total power consumption of the measured power supply is about 60W, and the average power is 45W;

The maximum measured power of each speaker is about 5W, and the average power is 4W;

No load (remove the four horns or turn the volume knob to the minimum, i.e. be in a silent state), the power is W.

In this way, some CD players will turn off on time after listening to an hour, so it is best to put acc, b+, ill and kl15 are connected to +12V, and it won't shut down.

How to wire the car CD player**.

Wiring method: In parta, connect acc, b+, ill to +12v, gnd to -12v, and everything else is empty; In partb, four "4 and 5W" speakers are connected accordingly. The maximum total power consumption of the measured power supply is about 60W, and the average power is 45W; The maximum measured power of each speaker is about 5W, and the average power is 4W; No load (remove the four horns or turn the volume knob to the minimum, i.e. be in a silent state), the power is W.

In this way, some CD players will turn off on time after listening to an hour, so it is best to put acc, b+, ill and kl15 are connected to +12V, and it won't shut down.

How do I pick up this picture?

Dear, you can refer to it.

Specify which two power cords are connected.

Car CDs can be repaired, one way is to return to the manufacturer for repair, and the other way is to go to the place where the electrical appliances are repaired for repair.

1. Generally, if there is a problem with the CD of the 4S store, it will be directly replaced with a new one during the warranty period and the claim will be processed.

2. If the manufacturer's warranty can no longer be carried out after dismantling and repairing during the warranty period.

The so-called vehicle, of course, refers to the products specially used in the car, which is convenient for use in automobile sports, and the most common ones are car ***, MP4, GPS, car ***, car hard disk machine, car power supply, car refrigerator, car massager, car computer, car TV, car U disk video recorder, etc. Famous brands in the car: Kaspu, Haikang, Dahua, Mashuo The use of these on-board products generally needs to be powered by the on-board cigarette lighter, and the on-board products have been deeply rooted in people's daily life, and it has also facilitated everyone's life.

Cars have been used as a means of daily transportation for more than 120 years, and during this time, they have undergone rapid changes with the development of technology. These indispensable companions in our daily lives have evolved to be able to speed at speeds of more than 200 km h on the road, the on-board air conditioning ensures that the interior of the vehicle is warm in winter and cool in summer, and the comfort of carrying five passengers is also guaranteed.

The selection and use of car CDs are as follows:

At present, the main brands of CD players are: Clarion, Alpine, Pioneer, and Kenwood.

In addition to choosing a brand with reliable quality, the second thing is to pick your favorite songs.

Then according to the model of the car to choose the suitable CD, CCD types are very many, there are single disk, three disks, six disks, eight disks, ten disks, twelve disks and so on.

When installing the single-disc machine, it should be noted that it must be installed horizontally and fixed firmly, otherwise the shock absorption effect is poor, and the laser head is often protected when it is vibrating, which will make the CD player aging for a long time.

CD machine should be adjusted before installation of the shock absorption direction knob, otherwise there is no shock absorption function, or even damage to the CD machine, the multi-disc machine should first pay attention to the connection line between the host and the CD machine during installation, in order to prevent interference with the power cord on the car to separate the wire, and to take the original line.

Try to use genuine discs, because the reproduction CD disk is poor in the production process, and the product often has uneven disc surface and uneven pitting etching, and these hidden dangers will cause the reading speed of the bald head to not keep up with the jump point, so that the sound is intermittent, and the bald head will be damaged for a long time. In addition, users should clean their hands when taking the disc to prevent oil stains and secretions on their hands from contaminating the disc surface. When wiping the dust on the disc surface, wipe it along the perpendicular direction to the trajectory, and wiping along the trajectory will damage the disc.

This question is difficult, it is not enough to just see it, and if you have not actually studied it, you will definitely not be able to do it.

However, if you dare to do it, you can try the following methods.

Open the case to observe:

1.Find the power supply: The grounding is very easy to find, and the shell is the ground that is the negative pole. At the positive electrode, you need to look at the filter capacitor inside, and look for the one with the largest capacity. Combined with the integrated circuit inside, you will find it.

2.You don't need to look for the radio antenna, you will know it when you look at it. Coaxial cable sockets are.

3.Take a look at what model the amplifier block is inside, and look it up. A closer look around the manifold will also reveal something. Generally speaking, the integrated block that works with a single power supply has an output coupling capacitor, and the capacity is not too small.

4.According to the above situation, you can find a 12V regulated power supply, preferably with an ammeter, if not, you can connect a multimeter. Then the power-on test, the output terminal can be connected to a 4 ohm 10w load resistor, and an ammeter can be connected in series.

Try wiring and you'll find the speaker wire. If the current is normal, then you can switch to the horn and you will hear the sound.

1. Remove the CD player panel, which refers to the panel that is larger than the two tuyeres.

2. There are buckles at the four corners of the panel, and the ventilation mask should be cracked and moved upward, and the finger cavity should be stretched into the inside of the buckle panel, and the other positions of the panel should be pulled in the same way.

3. After the CD machine is exposed, take out the two threads at the upper end of the CD and one at the lower end, and remove the wiring harness plugged into the CD.