7
d)
Close
the
back
cover
and
turn
the
back
cover
screw
to
the
lock
position.
2.2.
Charging
Open
the
cover
at
the
bottom
of
the
device,
and
charge
with
the
DC
adapter.
Charging
current
can
reach1.5A.
2.3.
Turning
the
collector
on/off
a)
Make
sure
the
battery
has
enough
power,
or
connect
the
T21toa
DC
adaptor.
b)
Press
power
button
for
three
(3)
to
five
(5)
seconds
to
turn
on(until
the
boot
screen
appears).
c)
Press
the
power
button
for
three
(3)
to
five
(5)
seconds,
and
confirm
to
power
off.
NOTE:
If
there
are
abnormal
situations,
such
as
the
T21does
not
operate
normally,
use
the
tip
of
the
stylus
to
press
the
reset
key
to
restart
the
T21.
2.4.
Connecting
to
a
PC
a)
Make
sure
Microsoft
ActiveSync
application
has
been
installed
in
Win
‐
XP
PC.
And
make
sure
WMDC
(Windows
Mobile
Device
Center)
has
been
installed
in
Vista/Win7/Win8/Win10
PC.
b)
Connect
T21
to
a
PC
with
USB
cable.
c)
ActiveSync/WMDC
will
connect
to
T21
and
PC
automatically.
The
icon
will
appear
in
the
tool
bar
of
PC
and
also
the
Synchronization
Setup
Wizard.
In
the
meantime,
click
Cancel
or
connect
without
setting
up
your
device
.
d)
Click
Browse
to
check
the
files
in
the
T21,
and
then
transfer
data
between
your
PC
and
the
T21.
2.5.
Installing
Applications
2.5.1.
Installing
Applications
via
ActiveSync
or
WMDC
a)
Make
sure
the
T21is
connected
with
your
PC
via
ActiveSync
or
WMDC.
