Chapter 1: Product Overview 1-23
LCD Backlight Inverter Module
An
Inverter
Board
supplies
power
for
the
LCD
Backlight,
which
is
a
separate
module
in
the
terminal.
The
inverter
has
a
connector
that
receives
power,
ground,
and
a
Backlight
dimming
signal
from
the
Processor
Board.
The
inverter
generates
the
high
voltage
necessary
to
start
and
run
dual
CCFL
Backlights.
A
fuse
located
on
the
Inverter
Board
protects
power
to
the
inverter.
This
fuse
protects
the
system
from
damage
in
the
event
of
a
Backlight
or
Inverter
Board
fault.
The
fuse
is
not
field
replaceable;
if
it
blows,
the
safety
characteristics
of
one
or
more
components
on
the
Inverter
Board
may
have
been
compromised
and
the
Inverter
Board
should
be
replaced.
If
one
or
both
Backlight
tubes
become
disconnected
or
otherwise
open
‐
circuited,
protection
circuitry
shuts
down
the
inverter.
This
avoids
over
‐
powering
a
single
tube
and
also
protects
against
high
voltage
shorting.
Touch Screen
The
Touch
Screen
completely
covers
the
LCD
and
is
mounted
directly
in
front
of
the
LCD,
behind
the
front
plastic
bezel
of
the
terminal.
The
touch
controller
on
the
Processor
Board
supports
capacitive
and
resistive
touch
glass.
The
touch
glass
has
an
integrated
harness
that
is
routed
into
the
Processor
Board
enclosure
and
is
connected
to
a
header
on
the
Processor
Board.
The
touch
glass
has
a
glare
‐
reducing
texture
that
also
helps
hide
fingerprints.
Summary of Contents for 7454
Page 1: ...NCR 7454 Retail Terminal Release 2 2 Hardware User s Guide 18004 NCR B005 0000 1256 Issue H...
Page 38: ...1 26 Chapter 1 Product Overview 16 High Post Mount 17198...
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Page 100: ...3 10 Chapter 3 Setup...
Page 138: ...4 28 Chapter 4 Operating System Recovery...
Page 148: ...5 10 Chapter 5 BIOS Updating Procedures...
Page 151: ...Chapter 6 NCR 7454 4x20 Customer Display 6 3 Character Set Page 1 International...
Page 152: ...6 4 Chapter 6 NCR 7454 4x20 Customer Display Page 2 Japanese...
Page 153: ...Chapter 6 NCR 7454 4x20 Customer Display 6 5 Page 3 Code Page 850...
Page 166: ...6 18 Chapter 6 NCR 7454 4x20 Customer Display...
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Page 180: ...B005 0000 1256 Dec 2002 Printed on recycled paper...