mp维修培训内部资料（Mp maintenance training internal data）

1、mp3维修培训内部资料（Mp3 maintenance training internal data）1., play MP3 songs appear jump, crash solution.Fault: because the scope of certain MP3 files and MP3 player support different, prone to skip, crash phenomenon, generally there are several reasons: the wrong frequency, is generally 44.1KHZ, sometimes

2、 48KHZ file can not be used; if the compression rate, compression rate of MP3 does not support the MP3 (too high or too low) VBR does not support; there is a common problem with some file STHVCD compression, the default is compressed into a MP2 format, but the display is MP3 format, most of the MP3

3、machine is not supported.Solution: you can delete or use your software to re - convert it into a format that meets the requirements of the machine. WMA files may also encounter copyright protection problems, then you need to use other software to lift copyright restrictions before you can play. For

4、garbled phenomenon, if the language settings no problem, it is generally ID3 label is not set, you can adjust yourself.2. press the boot button, the player does not display.Cause of failure: the machine does not have batteries or batteries, no electricity, or batteries are reversed.Solution: check w

5、hether the battery is installed, or replace the battery, or remove the battery, five seconds after the correct loading into the machine.3. after booting, press the button, the player does not respond.Cause of failure: machine key lock.Solution: toggle the HOLD key to unlock the key lock.4. when play

6、ing files, there is no sound.Cause of the trouble: the volume is too small; or the machine is connected to the computer; or there is no song stored in the machine.Solution: adjust the volume; or download songs to the machine.6., you can not send music files after the connection.Solution: please make

7、 sure that the USB communicator is connected to the computer and digital player, and that the player is in the boot state. Please confirm the USB driver is installed; please confirm the available memory capacity, and to download the file size; and please check whether the battery power is insufficie

8、nt; the check USB cable is not good, or for a USB cable to try.7. compression of their own MP3 files in the player can not play.Cause of failure: because the current compression format is different, and the compression rate is different, so the compressed songs compression format is not compatible w

9、ith the players compressed format. The player supports only standard compression formats and does not support nonstandard compression formats.Solution: when compressing songs, do not take the first or second layers of compression.8. why do some songs show a relatively chaotic time?Cause of the failu

10、re: the current use of compressed VBR format MP3 file (variable rate compressed MP3 file), when playing, due to changes in speed, will cause changes in time display, play is normal.Solution: once again with a fixed rate of compression, you can solve the problem of time display chaos.9. breakdown ana

11、lysis and solutionFailure reason: press several keys at the same time and other illegal operation (if not shut off, remove battery);In the file transfer when pulling USB plugs, etc.).Solution: remove the battery and load it correctly in five seconds. The format of the machines. Special attention sho

12、uld be paid to selecting the correct file format FAT.10.F9/V70 can not boot.Reason for failure: F9/V70 button is tight.Solution: press the play button for more than 5 seconds to turn on. After a long time, this phenomenon will not happen.11. why are some WMA formats downloaded to digital players tha

13、t cannot be played?Cause of the failure: now there are many forms of song files on the Internet, many of which are made in WMA format. You may know that there is a WMA format songs KRM (license) of the copyright protection measures, it can make unauthorized people can not play the songs, so you can

14、have all the people to protect the interests of good songs.There are websites on the web now offering WMA songs with no license protection. For this kind of song, you can copy and play it like any of the songs in MP3 format. However, there are some sites only have a license protected WMA songs (such

15、 as ), then, in the PC machine, you can only play the WINDOWS MEDIA in your PLAYS player obtaining a license in WINDOWS (MEDIA PLAYS player is a player WMA streaming media Microsoft offers free player software and you can download on the website), but many cannot simply copy the PC machine to anothe

16、r without a license to play, so as to effectively prevent the song diffusion, and protect the interests of the owners.Solution: our digital player also provides WMA player function, when you want to download one of you has made the corresponding license permission to play WMA songs, please do not di

17、rectly on the PC machine with a simple copy to download songs to a digital player, because this song didnt play normal in the digital player. Please open your WINDOWS MEDIA PLAYS player first, and click open in the menu file to open all the WMA songs you want to copy (if you can play it, you can dow

18、nload it). Our digital player is connected to the PC machine, there will be a mobile disk (such as F:) at this time, the portable device button in the WINDOWS MEDIA PLAYS player midpoint, will appear to copy music picture on the left here, you want to copy the song name, then press the left corner c

19、opy music button, you will have the corresponding license rights protection of the right to copy digital player in songs. Congratulations, you can take your favorite WMA songs to anywhere you want to listen.How many minutes of MP3 songs can 12.MP3 digital players save?Depending on how big a digital

20、player has, how large the available storage capacity is, and the MP3 files for 1 minutes, music about 1M, such asIf you have a 64MB/128MB memory, well, there is a music song that is close to 64 minutes /128 minutes.13. how to deal with missing data.Solution: some data loss is due to the instability

21、of the power spring during the download. (the user is advised to back up the data and the company is not responsible for any loss of data).14. why do some songs have different sound volume?Solution: MP3 songs have different volume, because the recording process, the intermediate level adjustment par

22、ameters are different, so it sounds different.15., why cant files that are smaller than the available space of a player can be downloaded to a digital player?Solution: the memory chip digital player in each 16KB or 32KB as a memory, a 1BYTE file will account for a memory area, so it may see the stor

23、age capacity is less than the available capacity of the file cannot be downloaded to the digital player.16. why does digital player not show?The solution: please check if there is insufficient power. Is the power switch in ON position?. If the operation is improper, the program will be lost. Please

24、update the program.17. how to formatBecause some players use special formatting tools, so when you format the player, must not use the formatter Windows system, otherwise it will cause your player not boot or not working properly. You can only use the formatting tools provided in our management soft

25、ware. If you dont have the installation management software, use the Windows system formatter to format your player using the FAT file. If you use the Windows system formatter, the filesystem NTFS or FAT32 will not work your product. If you install the player management software, in the browser cann

26、ot be formatted after installing the removable disk, this is because we in some system, the formatting of the Windows screen, you need to format the use of management software on your player to formatting tools.18. about transport and plug and play.In the transmission process, due to Win98, Win2000,

27、 WinXP with different operating system, computer display transmission schedule will be different, so we must to transfer schedule player as the standard, we suggest that player transfer Busy represents the current state for transmission. When the USB is displayed, it means that the transport has bee

28、n completed.Plug and play function is only applicable to Win2000, WinXP version, while Win98 and win98Se versions do not support plug and play function, users need to install the Win98 driver, we have to add to the player driven management software, as long as you install a player management system

29、that can provide us.19. instructions on the use of MP3 management software:When you use the MP3 management software to format the MP3 memory, if you can not find the MP3 player off the MP3 manager for opening, this is mainly because you deleted some formatting information system MP3 in memory, pleas

30、e dial USB connection line and then plug a can be solved.20. sometimes, when you plug in a player, it causes an abnormal computer end.Causes and Troubleshooting: mainly due to plug and USB in file transfer,We recommend that users do not disconnect during file transfer or formatting so as not to caus

31、e computer side exceptions.21. connection, can not find the mobile letter.Fault causes and troubleshooting methods: Win98 is not installed on a random player management software, or after the installation file is damaged, please reinstall the player management software; or your motherboard does not

32、support the USB interface, please contact your motherboard vendor and upgrade the motherboard driver.22. files in the player can not be deleted in the management software.Causes of failures and their elimination: usually the properties of these files are read-only properties, and you can delete them

33、 after you change the properties.23. some MP3 songs cannot be played properly in the player.Fault causes and troubleshooting methods: strictly speaking, MP3 refers to MPEG1, MPEG2, LAYER3 standard compressed music file, the vast majority of MP3 songs for this format: in the early days of MPEG1YAYER1

34、 and MPEG1LAYER2 in compression standard MP3 songs. A variety of format of our player can support including WMA, but is not compatible with MPEG1 first or second layers of compression and a variety of standard mixed compression MP3 songs, when players play this song, often skip this song.When you ru

35、n into a MP3 song format that is not compatible with the player, you can choose one of the following two measures:Remove the incompatible songs from the player and ensure the normal operation of the player. When you compress the software by itself, please select the encoding method of MPEG1LAYER3.24

36、. supported music formats: MPEG1, MPEG2, LAYER3WMA.The supported MP3 compression rate ranges from 32KBPS-38KBPS.Support WMA compression rate range is 64KBPS-128KBPS. because when you play a song, if you can not normally play, slow response buttons, etc. when playing sound headset, may not support th

37、e compression format of the song system, the processing capacity of the system beyond the compression rate range or song.When this happens, please delete this song or use the software to compress it into a standard song.Tip: confirm the format of the song - connect the MP3 player to the PC and view

38、the file information using the usual playback tools (such as Winamp).25. why does MP3 display less than 128MB/64MB of memory on the computer?Because MP3 wrote the program when they were out of the factory, these programs took up MP3 of memory, so MP3 didnt show enough memory in the computer 128MB/64

39、MB.26. why download songs while MP3 cant play them?Cause of the failure: the downloaded song is present in the player but does not exist in the MUSIC file in the AUDIOS file package.Solution: turn on the MP3 player on your computer and youll see a AUDIOS file pack in your MP3 player,Click to open yo

40、u can see a DVR package (designed to store audio file) and a MUSIC package (designed to store music files), only in the MUSIC file in the package can be identified, only normal play. Therefore, as long as the song is moved to the MUSIC file package, it will be able to playback.Why cant the USB plug

41、of 27.F9/V70 be pushed directly?Answer: F9/V70 plug in order to prevent the plug in the computer USB interface back, the F9/V70 plug in the USB set an office behind. To push back the USB plug, need to use the left thumb nails tight at the tail of the triangle USB interface logo, with the right hand

42、push USB interface, can put the USB plug back down.The LCD screen on 28.F4/V80 shows please format and update program, but it cant be formatted on the computer. What should I do?Fault reason: This is due to user boot charging caused by FLASH memory. Must avoid boot charging, the charge must be the m

43、achine on the right side of the key to pull to OFF.The solution: the machine needs to be returned to the factory to empty FLASH and re write the program.29.F3/F30/V20/V21 what can I do without the machine?Failure cause:This is because the user did not disconnect from the computer MP3 player, directl

44、y from the computer MP3 player pulled out of the MP3 lost program.This is the MP3 lost program caused by the users formatting of the machine.The solution: download the program on the random disk or download the F3/V20 program from our program on the website of our company to MP3, and then you will b

45、e able to work properly.30. about the MP3 charging problem.The charging time: all MP3 first charge need to charge 8 to 10 hours, in order to maximize the efficiency of the battery, after each charge 2 - 4 hours will be.The how to charge? F4/V80, F4+/V80+, F1/V60 charging must take the power switch t

46、o OFF, otherwise it will cause damage to the machine; F9/V70, F99/V77, F4/V80 and F4+/V80+ can be charged by the computer or the complimentary charger; F2/V40 and F22/V90 must be through the electric charger for the complimentary.The charging method:• by charging the computer USB5V voltage, the

47、 player and computer can be connected to the ? use random distribution charger to charge the player. Connect the charger to the required power source first. At this point, the charger red indicator light, and then the player and charger correctly connected, another green light means charging, green

48、lights out, that is full of electricity or not connected to the player, please reconnect.Be careful：(1) as long as the power supply is connected, the red light of the charger is always on, so when the charger is not charged to the player, disconnect the charger from the power.(2) in the whole chargi

49、ng process, the green light will gradually weaken from light, completely extinguished, that means completely full of electricity.31., why does the song with the lyrics synchronous display, some songs lyrics and sing out of sync?Synchronous lyrics display machine can only play the songs with lyrics d

50、isplay lyrics, that is to say the song only through the complimentary CD lyrics editing software to edit the lyrics lyrics display. In addition, if you edit the lyrics when the input time and singing asynchrony, it will cause the song lyrics and singing is not synchronized. Therefore, you should pay

51、 special attention to the time entered and the synchronized input for editing the lyrics. A song with simultaneous lyrics, some songs and songs are not synchronized because of songs, and have nothing to do with the quality of the machine.32., F1/V60 format, there is no electronic dictionary, how to

52、do?Answer: you can directly to our complimentary CD in the electronic dictionary program is copied to the MP3 player in the AUDIOS package in the DICT file, so you can use the electronic dictionary.33. analysis of the noise of MP3(1) circuit design problems when many circuits due to too many scruple

53、s cost problems led to should add decoupling capacitor bypass capacitor or inductance is not essential as some things to get rid of what looks no problem but to wait until the product problems will come out.(2) the choice of components inside a lot of MP3 there will be some inductive element what so

54、me components is cheaper but also caused serious leakage of IC or interfere peripheral circuits due to excessive static noise.(3) the arrangement of circuit boards can also lead to noise(4) when the software design is not considered in the case of the main IC mute or doing audio output work although

55、 the sound seems to be still a little but the current or the flow of the output terminal caused by static noise. Another is that for the size of the sound, there is a problem with the step size defined in the software. The step size is too large to cause silence, but the current is flowing to the he

56、adphone output.34. abnormal sound, how to repair?A sound or no sound, a fault sound deficiency is relatively common, because the MP3 players are using 3.5mm audio jacks, and the socket is directly welded on the circuit board, so some welding machine will not pass this kind of problem when multiple p

57、lug. If a channel does not sound, or if the sound is interrupted, you can first replace the headset to determine the point of failure. In determining the machine problem, as long as the direct disassemble the machine, use the electric iron to plug the socket pin. Sometimes the sound sounds very holl

58、ow if it is open to the point where the socket is connected. However, the maintenance of this problem is relatively simple. But sometimes is so open after the solder joints weld, look very good, but the best in the solder joints to add some rosin (or other flux) after welding. A case can find fault points