MPMan MP-F90, Руководство пользователя

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Page 9 of 10
Cannot power on the
device. 1. No battery or battery is
too low.
2. The keys are locked. 1. Install or replace the
battery.
2. Disable the Hold Switch
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. Skip the file.
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
accordance with the
marked amount. Part of memory is used to
store programs and display
characters.
Some of MP3 files
cannot be played
properly. The MP3 file is
compressed by a standard,
such as MPEG I Layer 1 or
Layer 2 that the player
does not support. Delete the unsupported
MP3 files.
Use MPEG I Layer 3
standard to compress the
unsupported MP3 files.
Specification
Item Parameter
LCD Display 96 x 64 Matrix Graphic Screen
Battery Type Rechargeable Li-polymer Battery
Battery Life 6-8 hours
Recording Format ACT
Recording Length (Max.) About 280 hours with 1GB
Music format MP3, WMA, ASF
Bit rate MP3/WMA: 8kbps ~ 320kbps
ASF: 8kbps
－
448kbps
Frequency range 20Hz ~ 20kHz
Signal/noise ratio >= 90 dB
Channel separation >=40dB
Frequency response <=3dB (20Hz ~ 20kHz)
Output power to earphones L 4mW, R 4mW
USB Interface USB 2.0 (high speed)