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HP 48gx User Manual

HP 48gx
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If
you
suspect
that
your
calculator
is
malfunctioning:
1.
Run
the
self-test:
a.
Turn
on
the
calculator.
b.
Press
and
hold
(ON).
c.
Press
and
release
the
“E”
menukey.
d.
Release
(ON).
The
diagnostic
self-test
tests
the
internal
ROM
and
RAM,
and
generates
various
patterns
in
the
display.
The
test
repeats
continuously
until
you
perform
a
system
halt.
2.
Halt
the
self-test
(system
halt):
a.
Press
and
hold
(ON).
b.
Press
and
release
the
“C”
key
(the
key
with
C
next
to
it).
c.
Release
(ON).
The
empty
stack
display
should
appear.
If
the
self-test
indicates
an
internal
ROM
or
RAM
failure
(if
IFO
Qi
and
IFAM
OF
are
not
displayed),
the
calculator
requires
service.
If
the
calculator
passes
the
self-test,
you
may
have
made
a
mistake
operating
the
calculator.
Reread
appropriate
sections
of
the
documentation
and
“Answers
to
Common
Questions”
in
Appendix
A
of
the
HP
48G
Series
User’s
Guide.
9-4
If
Things
Go
Wrong
...

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HP 48gx Specifications

General IconGeneral
ModelHP 48gx
TypeGraphing Calculator
Display TypeLCD
Display Size131x64 pixels
Memory128 KB RAM
Expandable MemoryYes, via expansion cards
Release Year1993
ProcessorSaturn
Programming LanguageRPL
Power Supply3x AAA batteries
Weight255 g (9 ounces)

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