Teclast X21, Service Manual

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PRESS
M
In system information menu, press button to
return to the previous menu.
CAUTION:
Because firmware will use some space, the
displayed content capacity may probably be
different from the actual capacity.
# Language
Russian and English are supported.
PRESS
# Upgrade
Download the latest firmware upgrading file
from BBK website firstly, such as "BBK X21RU.
ebn" and "X21RU_Resource.bin", copy the two
files into MP3 PLAYER at the same time, and
then power on again. Find "Upgrade" item in
"ADVANCED" of "SETTINGS", and pressing
button may start upgrading.
NOTE:
# Only MP3 player detects that there is
upgrading file in system when this player
power on, "Upgrade" menu will appear in
"ADVANCED" item.
# Make sure MP3 PLAYER has enough quantity
of electric charge before upgrading.
# To ensure successful firmware upgrading, do
not power off during the course of upgrading.
# Upgrading will last about 10 seconds or more,
please try your best not to operate any buttons
during this course.
# After firmware upgrading finishes, some
function or interface may probably be different
from user manual, so please take real object
as standard.
After upgrading finishes, MP3 PLAYER will
power on again.
2.4 SPECIFICATION
Model X21
Audio dicode chip Philips PNX0101
Continuous playback time The longest time is about 10 hours
Dimensions/weight 57mm×45mm×14m m about 30.7g
Audio SNR
90dB
Headphone out 9mW+9m W(32ohm im pedance)
Frequency range 18Hz~20kHz
FM tuning rang 87.5MHz~108MHz
Working tem perature
0~40
Files supported MPEG 1/2 Layer 3(16kbps~320kbps),W MA(8kbps~192kbps),W AV
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