11
2. Charge the batteries at temperatures between 10
o
C to
30
o
C. Low temperatures require a long charging time.
3. This TFT-721 is designed to operate only with special
batteries. The battery design for only professional or
Service Provider can open. Do not open or try to
disassemble the battery cover on the back yourself.
4. While the battery is in use or being charged, the
battery pack heats up. This normal and is not cause
concern.
5. When the battery indicated iron on the screen flashes
or when you have not used the battery for a long time,
you need to recharge the battery.
6. If the battery power is still low after charging it, the
battery may be reaching the end of its life and should
be replaced. Please contact your dealer or Service
Provider.
5.6 About the headphone using
1. Do not use headphones while driving, cycling, or
operating any motorized vehicle. It may create a
traffic hazard and is illegal in some areas. It can also
be potentially dangerous to play loud music while
walking, especially at pedestrian crossings.
2. Avoid using headphones at high volume. Hearing
experts advise against continuous, loud and extended
play. If you experience a ringing in your ears, reduce
the volume or discontinue use.
6. TROUBLESHOOTING
Problem
Possible causes
What to do
The LED on
the front panel
does not light
up/is not lit.
Mains cable is
not conn- ected.
The battery isn’t
installed or need
to recharge.
Condensed fluid
may cause the
TFT-721 to
malfunction.
Check that the mains
cable is plugged into
the power socket
Make sure the
battery is installed
properly and
charged.
Disconnect the AC
adapter and remove
the battery. Wait
three to five minutes.
Reattach the AC
adapter and reinstall
the battery, and press
the power button to
turn on the TFT-721.
Do not use the
TFT-721 for at least
one hour if there are
some condensed
fluids in it.
The screen is The TFT-721 is Press the any buttons
close and
power LED is
on.
in close screen
modes
to bring the TFT-721
out of close screen
mode
The remote
control is not
working.
Battery
exhausted.
Remote control
is incorr- ectly
Aimed.
Change battery.
Aim the remote
control at box.
Check that nothing
blocks the front
panel.
You have
forgotten your
PIN code
Please
use
factory
default mode.
When the
TFT-721 tries
to find and
store channels
you get the
message “No
services”.
When only
very few of the
expected
number of
channels are
found.
The aerial is not
properly
connected to the
TFT-721.
The aerial is not
correctly
directed towards
the trans- mitter.
The aerial is not
suitable for
digital channels.
The signal is too
weak for the
connected aerial.
There are no
terrestrial digital
transmissions in
the area.
Check the aerial ins-
tallation including its
connections.
Check that the aerial
is directed towards
the trans- mitter.
Check that digital
trans- missions are
available in the area.
If things does not
work out as they
should, let the local
TV dealer check
whether the aerial is
intended for
receiving digital
trans- missions or
not. If not you have
to exchange the
aerial.
During the
channel
searching
process, the
buttons or
remote
controller’s
keys are
insensitive.
Since the
channel
searching
process use a lot
of system
resource, the
system scan
keys or buttons
will become
very slow.
Try press buttons or
remote controller’s
keys several times.
Note: If you have tried all of the actions suggested above,
without solving the problem, please contact your dealer or
Service Provider.
7. TECHNICAL SPECIFICATIONS
7.1 Transmission Standards
Analogue TV, DVB, MPEG 2
7.2 RF Input Modulator Output
RF input frequency 174-300MHz & 474-862MHz
(DTV),VHFL, VHFH, UHF (ATV)
