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2,  in  the  process  of  battery  powering,  when  the  battery  voltage  drops  to  the  protection 
threshold value, it will automatically cut off the button input and remote control input, as 
well as the out. LCD shall display "Battery: LOW" for user

s attention to charge. 

 

3, if the  power has been disconnected in time  or charged, when the battery voltage falls 
below the protection threshold value, all power consumption modules will automatically 
be cut off (except the control module) to protect the battery from damage. 

   

BATTERY CHARGE: 

 

Charging  method: the  charger cable connects the  host to  the  charger, which  can achieve 

the battery  charging.  The  charging time is about 1.5-3 hours. When all indicating lights 

on the charger turn from red to blue, it indicates the completion of charging( Two lights 

is red When Charging).   

 

Product function block diagram: 

1

positive. 

 

 

 

 

 

 

 

 

 

2) left. 

 

 

 

 

 

 

 

3) right 

 

 

 

 

 

 

 

Functions of each module are as follows: 

LCD display: relevant information is synchronous displayed as follows:   
1),  in  the  upgrade  process,  whether  the  SD  card  is  detected,  whether  the  card  owns 
upgrade file, and whether the upgrade is complete shall be displayed.   
2), power initialization shows whether the SD card is detected, whether the card contains 
music files, and finally indicates the system is ready. 
3), in normal playback, it displays the file name of current playing track and the location 
in music file system. 
4), displays play/pause status.   
5), when the folders are in operation, it displays folder names and total number of tracks 
in folders.   
6),  when  the  battery  voltage  is  low,  it  displays  the  battery  voltage  is  low  to  remind  the 
charge. 
Backlight  buttons:  on  /  off  LCD  backlight.

  Meanwhile  serves  as  the  automatic  start 

button of upgrade operations.   

 

Summary of Contents for QA-350

Page 1: ...to bump and fire 8 it is prohibited that the direct connection of short circuit of the battery positive and negative poles It may result in serious damage to the battery or even fire 9 strictly prohibited to throw battery in fire or liquids to avoid danger 10 strictly prohibited to charger in the car 11 in order to avoid adverse consequences caused by the battery abnormal use please do not put lit...

Page 2: ...completion of charging Two lights is red When Charging Product function block diagram 1 positive 2 left 3 right Functions of each module are as follows LCD display relevant information is synchronous displayed as follows 1 in the upgrade process whether the SD card is detected whether the card owns upgrade file and whether the upgrade is complete shall be displayed 2 power initialization shows whe...

Page 3: ...harger through the built in interface to charge the battery For charging method please see related introduction Key Lock Switch to prevent the keys being misuse when it is in the state of ON press the button to lock it on the contrary it is also operational SD socket where SD card insertde Remote user s manual Functions of each key Host standby press this key the host player will enter a standby s...

Page 4: ...ent file name _ _ _ in lines If input music number it will play that music directly If the number is beyond the sum of files it is considered as invalid and makes no response 5 Press F or F to choose music in folders If press F it turns to the next folder to play And F is invalid when it comes to the last folder If press F it turns to the previous folder to play when it comes to the first folder t...

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