2. Why can some songs in WMA format be played on the computer, but not on the JXD player? A: There are many possibilities. First of all, it is necessary to determine whether the sampling rate and bit rate of WMA files are within the range supported by JXD. Secondly, some WMA files are copyrighted when they are suppressed, so they cannot be played on other devices. (When using Windows Media Player to compress a music CD into a WMA file, you should uncheck the "Copy Music" option in Tools-Options-Copy Music, so that the compressed WMA file has no copyright protection. )
3. How to delete songs directly on the player? Answer: When it is turned on and does not play, use the five-dimensional navigation key to select the song or folder to be deleted, and press the MODE key, and a confirmation prompt box will pop up. Then use the five-dimensional navigation key to select Yes, and press the five-dimensional key down (or press the play key) to delete.
4. Why can't I see the lyrics when I play the song? A: JXD supports the display of lyrics of MP3 songs, but does not support the display of lyrics of songs in other audio formats. Lyrics format is lrc, and other lyrics formats are not supported. Note: The song file name is the same as the lyrics file name.
5. Why can't my player display Chinese normally? Answer: Press the menu key to enter the "Settings" menu, enter the "Language" option, and check "Chinese (Simplified)" to display Simplified Chinese normally.
6. Is the screen of the player easy to scratch? Is there any way to solve it? Answer: Generally, it is not easy to scratch under normal use. It can be protected by screen protective film for mobile phone or PDA, and it can also be protected by protective sleeve, silicone sleeve, etc.
7. The Chinese operation interface cannot be displayed normally, and the English operation is normal. Answer: The Chinese font is lost. Reinstall the font library. Please refer to the fourth step of PMP upgrade method for details.
8, suddenly unable to connect with the computer A: Go to the universal serial bus controller in the device manager. If there is a yellow question mark, uninstall.
9. The software cannot convert RMVB format and RM format. A: After downloading Video Storm 5, you can convert it.
10, the radio can't receive the station. A: Please plug in headphones and tune the channel manually. It's related to location and signal strength.
1 1, the e-book cannot read the answer: copy the text and put it in the TXT folder. The file is named PMP1.txt-pmp9.txt.
12. This method can solve the problem of "please format the memory" after plugging and unplugging the expansion card and other failures that can be started but cannot be operated due to data errors! Answer: 1. Press and hold the MODE and ESC keys at the same time, and then press the power button to start the machine. 2. Release the button after starting the machine. At this time, several lines of time will appear on the LCD screen. 3. Enter Settings → Storage →NANDFLASH in turn. After confirmation, the machine will be locked and the machine is undergoing internal formatting. 4. Follow the upgrade method of PMP.
13. When using the SD card, the memory cannot be read or the memory file is mysteriously missing. A: 1. If the memory file is lost due to card incompatibility, try not to insert the SD card while using the built-in memory to avoid switching between the SD card and the memory. That is to say, when the SD card is not used, turn it off and pull it out, and then restart to use the built-in memory; ; When you need to use the SD card, turn it off and insert the SD card to restart. 2. When the memory error or file loss is prompted (at this time, the memory can no longer be read or written), you can reformat the memory with the formatting function of the machine menu; Finally, remind friends who have not bought an SD card but are going to buy it: remember to bring the machine when you buy it, and try it repeatedly on the spot to avoid buying incompatible cards.
14. Why can't the computer recognize MP3? Answer: Computer USB port failure (mechanical damage, insufficient power supply, etc. ). Computer operating system failure, it is best to restart or install system software. Or the driver installation failed, and MP3 cannot be recognized correctly. It is recommended to reinstall the USB driver after uninstalling.
15. Why is the nominal memory capacity inconsistent with the memory capacity displayed on MP3? Answer: The nominal capacity of MP3 is 128M, but according to different algorithms of 1000 and 1024, the formatted capacity should be 125M. The memory capacity of PC monitor is different from that of MP3 monitor because the difference between them is used to store playing software and GB Chinese fonts.
16. Why does it sometimes crash? A: When a song is being copied or formatted, unplugging the USB connection will cause the keys to lock. When copying songs, the progress of copying songs displayed on the LCD of the player shall prevail. When the player's notes stop beating, it means that the copy has been completed. Before unplugging the USB cable from the computer, you should confirm whether the removable disk has been safely ejected. Please click the icon of safely deleting hardware in the notification area at the lower right of the desktop, confirm that the hardware has been safely deleted or enter Windows Explorer, find the mobile hard disk generated by the machine under test, press the right mouse button and select Eject. Note: Do not unplug the USB connection before copying or formatting is completed.
17, what should I do if I can't boot? Answer: When the MP3 file is copied/the firmware is upgraded/formatted unexpectedly or crashes (such as power failure), take out the battery (the machine with built-in lithium battery does not need to perform this step), press and hold the "PLAY" key, and the computer will find the MP3 hardware as usual, install the software, and then upgrade the firmware.
18, how to adjust the order of songs? Answer: After copying the song, add the serial number before the song (for example: 0 1, 02,03 .............10 ............ 99, etc. ), then when playing MP3, the songs will be played in the order of serial number. Note: Don't covet convenience. Replace 0 1 with1and 2 with 02. In this case, the system will play these songs the last time.
19, a comprehensive understanding of LRC lyrics LRC overview LRC lyrics is a special lyric format based on plain text, which contains a "tag" in the form of "*: *]". It was first put forward by Mr. Guo Xiangxiang and applied to his program. This lyric file can be used to realize karaoke function (requiring special programs), and can also be viewed and edited by ordinary word processing software. Of course, the actual operation is usually efficient editing with special LRC lyrics editing software. The following describes the "label" in LRC format in detail. The form of time label is [mm:ss] or [mm:ss.fff] (minutes: seconds). Numbers must be non-negative integers, for example, [12:34.5] is valid and [0x0C:-34.5] is invalid. It can be anywhere in a line of lyrics. A line of lyrics can contain multiple timestamps (such as overlapping sentences in lyrics). According to these timestamps, the client program will highlight the lyrics in turn, thus realizing the karaoke function. In addition, labels do not need to be sorted. The format of the ID tag is [ID Name: Value]. Case equivalence. The following are predefined labels.
[ar: artist name] [ti: song name] [al: album name] [by: editor (referring to the person who edits LRC lyrics)] [offset: time compensation value] Its unit is milliseconds, with a positive value indicating overall progress and a negative value opposite. This is used to adjust the overall display speed.
sample
[ar: unknown] [ti: sample] [al: none] [by: me] [01:02.355] [00: 00] This line should be sung twice [00: 05.7] and this one ... only once. Development standard (for programmers' reference) Whether at the beginning of a line or not, all the lines with the form of "[*: *]" should be regarded as labels. (Note: the colon is not a full-width character ":")
Not all labels should be displayed.
Any label, as well as two parts separated by a colon, are non-negative and should be considered as time labels. Therefore, nonstandard forms of time stamps (not "[mm:ss]") should also be recognized (such as "[0:0]"). All tags that are not timestamps should be regarded as identification tags. Capitalization and lowercase equivalence of identification names. Undefined new tags should be ignored for backward compatibility. In addition, the contents of the same line after the comment mark ([:]) should be ignored. Multiple labels in a line should be allowed and handled correctly. Should be able to handle unclassified tags correctly.
20. How can there be sound in the built-in speaker after plugging in headphones? A: It's normal to plug in the earphone speaker and have sound. You can turn off the speaker sound in the menu settings.
2 1, the fault is as follows: 1, data is often lost for no reason, the memory display is only about 30M, and the same fault occurs every time a special point is found for maintenance; It's impossible to turn on the machine now, even if it is plugged in. Plug in the computer and turn it on, but I can't find the drive letter ... I'm completely paralyzed! A: Firmware upgrade
You can play it, but you can't delete or download music or store data on your computer. Anyway, it can't do anything except one player now. Answer: Firmware upgrade.
23. Precautions for battery maintenance The maintenance of the built-in battery is the same as that of the mobile phone battery. Pay attention to moisture and sun protection, and don't touch chemical corrosive substances. It is best to charge and discharge the new battery thoroughly for the first time, that is, it should be fully charged every time it is used, and then recharged after it is used up. The first charging time is slightly longer than the normal charging time. The service life of the battery is calculated by the number of charge and discharge, so it is best to fully charge it before using it, and then recharge it when it is used up.
24. TV output answer: Make sure that the TV has an input port, the one with three interfaces is plugged in in color, and only one port on the other side is connected to the AV-out port of MP4, and then enter the setting menu-TV output -TV-PAL or TV-NTSC on MP4.
25. Recording TV programs. Make sure the TV has an output port. One side with three ports is color plugged, and the other side has only one port connected to the AV-in port of MP4. Then enter the "Record" menu on MP4, and press the menu key to confirm, that is, record the content to be recorded on MP4.