Operation Manual

EM638A/639A/640A MP3 PLAYER USER GUIDE
Page 6 of 7
Item Description
Contrast Set the contrast between the background and the foreground of the
LCD.
Backlight Set the duration of the backlight after you press any key.
Power Set Set the length of time after which the player is turned off
automatically when there is no activity.
Record Set Set recording bit rate. The higher the bit rate, the better the
recording quality. They are four settings for your selection: 32kbps,
44kbps, 64kbps, 88kbps. Move the Menu button left or right to
select one of them.
Language Select language in which onscreen text is displayed
Reset Load system setting to default
11 Check system information
To check system version or memory information,
(1) Press and hold the Menu button to enter the main menu.
(2) Select “Info” and press Menu key to continue. You see the software version number
and the memory information is displayed.
12 Troubleshooting
Problem Possible Cause Solution
The LCD displays
nothing when the
key is pressed.
1. No battery or battery is too
low.
2. The keys are locked.
1. Install or replace the
battery.
2. Unlock the Hold switch.
Press the key after
turning on, while the
player has no response.
The keys are locked by Hold
switch
Slide the Hold switch to the
unlocked position.
No sound when playing
music or voice file.
1. The volume is too low.
2. There are problems with the
audio file.
1. Adjust the volume.
2. Delete the file or play oth
files.
The player cannot be
connected to the PC.
1. The driver is not installed or
destroyed.
2. The USB interface is not
supported by PC’s
motherboard.
1. Install or reinstall the
driver shipped with the
player.
2. Update or replace the
PC’s motherboard.
The displayed time is
changing constantly.
The bit rate of the MP3 file is
changing during playback.
Try to use fixed bit rate to
compress the MP3 file.
The PC has error when
you plug and unplug the
player.
The player is disconnected from
the PC abruptly while
transferring files.
Do not disconnect the player
from the PC when
transferring files.
Total memory displayed
on the player is not in
Part of memory is used to store
programs and display