1
.
Paper
room
Trouble
Shooting
and
advised
solution:
Fault
phenomenon
Elimination
methods
No
display
on
screen
1. check
if
battery
installed
right
2. check
if
battery
is
enough
for
work
Cannot
read
card
1. check
if
card
slot
is
clean
2. check
if
card
has
enough
magnet
info.
Read
magnetic
card
data
incorrectly
1. swipe
card
with
constant
speed,
close
to
slot
bottom
2. magnetic
stripe
should
face
the
screen,
align
at
card
slot
3. try
to
swipe
card
in
another
direction
IC
card
data
read
incorrectly
1. Ensure
the
chip
side
is
upward,
card
be
inserted
to
the
top
2. ensure
IC
card
chip
is
safe
and
sound
NFC
card
data
read
incorrectly
1. ensure
card
has
NFC
function
2. ensure
read
card
in
NFC
area
3. ensure
card/mobile
be
placed
smoothly
and
steady
in
NFC
area
Camera
failure
1. ensure
camera
not
be
covered
2. ensure
if
enough
light
for
camera
to
work
Printer
do
not
work
1. ensure
paper
be
sealed
correctly.
2. check
if
it
has
right
size
paper,
and
installed
right
3. check
If
low
battery
Communication
failure
1. check
if
sim
card
inserted,
if
card
contactor
clean
2. ensure
there
is
signal
3. try
to
re
‐
establish
communication.
