Error
Messages
and
Self-Tests
Memory
full
Pre!!!!
RETURN
to
clear
The "overflow protect" memory lock
feature
is
enabled
and
display memory is full.
You
must
disable
the
memory lock
feature
or delete some
data
before
any
more
data
can
be accepted
into
display memory.
If
you
disable memory lock, you
may
wish to
first
enable
top
data
logging (if
there
is
an
integral
or
external
printer
available) to
maintain
a
hard
copy
data
trail
of
all
lines forced off
the
top
of
display memory.
No
'TO'
device
Pre!!!!
RETURN
to
clear
You
attempted
to
initiate
a device control
data
trans-
fer (copy line, copy page, copy all)
but
no
destination
device
is
currently
defined.
Press
.,
use
the
"device
control"
set
of function keys
to
define
an
external
printer
and/or
the
integral
printer
as
the
"to"
device,
and
then
retry
the
copy operation.
U!!e
NEXT
or
PREVIOUS
key
Pre!!!!
RETURN
to
clear
You
attempted
to
change
the
configuration·
field
marked
by
the
cursor
by
entering
data
through
the
keyboard. The field
can
only be changed
by
using
the
"NEXT
CHOICE"
and
"PREVIOUS
CHOICE
function keys.
Value
out
of
range
Pre!!!!
RETURN
to
clear
The configuration
menu
field
marked
by
the
cursor
contains
a
value
that
is
not
within
the
allowed
range.
TERMINAL SELF-TESTS
The
HP
2624A includes
the
following six
types
of
self-tests:
• Power-On Test
•
Terminal
Test
•
User
Data
Comm Test
•
Integral
Printer
Test
•
Manufacturing
Test
•
Identify
ROMs
r
The
Power-On Test
is
initiated
automatically
as
the
result
of
a power-on sequence; you
may
also
initiate
it
from
the
keyboard
by
using
one of
the
"!!ervi
ce
key!i
"function
keys.
The
Terminal
Test
can
be
initiated
using
a
"!iervice
key!!"
function key, a
"MODES"
function key,
or
programmatically.
All
of
the
other
tests
may
only be
initiated
using
the
"!iervice
key!!"
set
of
function keys.
Power-On
Test
The
Power-On Test, which is performed
automatically
whenever
you
turn
on
the
terminal's
power, does
the
follow-
ing:
1. Tests
the
processor chip.
2. Tests
the
video controller chip'.
9-2
3. Tests
the
keyboard/printer
controller
chip.
4.
Verifies
the
integrity
of
all
RAM (Random-Access
Memory)
and
firmware
ROM
(Read-Only
Memory)
chips.
5. Verifies
the
integrity
of
all
firmware
ROM (Read-Only
Memory) chips.
6. Checks to
be
sure
that
at
least
one
character
ROM chip
is
present.
7.
Tests
the
integral
printer
(if present).
Note
that
this
test
does not, however,
actually
produce
any
printed
output.
8. Verifies
the
integrity
of
the
non-volatile RAM chip.
9.
Rings
the
bell.
If
any
of
the
tests
1-4
above detects
an
error
condition,
the
LED!!
on
the
processor board
are
used
to
indicate
the
test
that
failed. No
error
is
displayed because
the
video
system
has
not
yet
been
turned
on. The
terminal
stops functioning
at
this
point
and
pressing
II1II
or
any
other
keyes) will
not
restart
the
terminal.
In
such
a case,
you
should call
the
nearest
HP
Sales
and
Service Office
and
arrange
to
have
the
terminal
repaired.
If
either
test
5
or
6 above detects
an
error
condition,
an
appropriate
message
is
displayed across
the
bottom
of
the
screen (where
the
function
key
labels
normally
reside)
and
the
terminal
stops functioning.
Pressing.
will
neither
clear
the
message from
the
screen
nor
restart
the
terminal.
In
such
a case, you should call
the
nearest
HP
Sales
and
Service
Office,
tell
them
what
error
message
was
generated,
and
arrange
to
have
the
terminal
repaired.
If
tests
6
or
7
detect
an
error
condition,
an
appropriate
message is also displayed across
the
bottom
of
the
screen.
As
with
tests
1-5,
you should call
your
HP
Sales
and
Service Office
and
arrange
for a service visit.
In
this
case,
however, you
may
clear
the
message from
the
screen
by
pressing
•
and
then
use
the
terminal
(except for
the
integral
printer
if
test
6 failed) while
waiting
for
the
repairs
to be done.
To
initiate
the
Power-On Test from
the
keyboard,
press
the
following
keys
in
the
sequence shown:
II
Terminal
Test
..
service
keys
This
test
does
the
following:
-
POWER
ON
TEST
1.
Displays
the
message "TESTING!"
at
the
bottom
of
the
screen
until
the
test
is finished
or
until
an
error
condi-
tion
occurs.
2.
Tests
the
video controller chip.
3. Verifies
the
integrity
of
all
firmware
ROM chips.
4. Non-destructively verifies
the
integrity
of
all
RAM
chips.
5.
Tests
the
keyboard/printer
controller chip.
6.
Tests
the
integral
printer
(ifpresent). Note
that
this
test
does not, however, produce
any
printed
output.
7.
Verifies
the
integrity
of
the
non-volatile RAM chip.
8. Displays
the
test
pattern
shown
in
figure 9-1.
c
(
(
------~--------------
-
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