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53
54
RESTART can be a
trifle
more serious.
If
RESTART should appear other
than
when
you first turn
on
the HHC with the switch
in
back
.
press
twice.
This should
produce
the
Primary
Men
u,
meaning
that
the problem was
in
the capsule
or other
peripheral
program: your HHC
is
fine
.
However,
if
you are unable
to reach
the
Primary
Menu in
this
manner.
turn the HHC
oft by means of
the
ALL-OFF switch in
back
of the
unit.
Detach all
capsules
and
peripherals. Wait
about
two
minutes.
Then
using
as
a
power
source
the
AC
Adaptor
(which you also
should
check),
turn
the HHC
on
again with
the
switch
in
back.
When
you press
•
followed
by
,
the
word REST ART appears
in
the
Display,
and pressing
should
bring
you the Primary
Menu.
Otherwise,
the HHC
needs
servicing.
If the above procedures were
successful
in
restoring
normal
operation.
immediately
re-enter
the time and the Clock/Controller schedule. and all
material
in the Internal Memory-as
these
are lost when
the
ALL-OFF switch is
turned
ott.
One way to
minimize any such
memory
loss
is frequently
to
make
copies
of files
into
Programmable
Memory
peripherals.
Finally
,
when things
don'
t happen as
you expect them to.
refer
once
again
to
the
appropriate section
of
this
manual.
Although extremely
unlikely,
the
fault could
lie
with you-so
check it
out.
OPERATING PRECAUTIONS
Charge the batteries every six
months,
ifthe
unit
is
not used for
a
long
time
with the
ALL-OFF
switch
set to
"OFF"
.
Do not subject the
unit
to
a temperature
of over 6o•c
(120.
F),
because
characteristics of the
internal
parts may be
adversely
affected by heat.
Especially,
never leave the unit
in
a
car
exposed to the
direct
sunlight
for
a
long
time.
The
cabinet may
become
deformed and deterioration of
the performance
may result.
The HHC can be cleaned
with
a soft cloth moistened
with
a
mild
soap-and-water
solution
.
SPECIFICATIONS
Microprocessor:
6502
running
at
1
MHz
ROM Capacity:
Internal ROM
16K
bytes plus sockets
for
3 capsules each
containing
up
to
16K
bytes
RAM
Capacity:
RL-H1
000: 2K bytes
(expandable
to
4K
bytes)
RL-H1400;
4K
bytes
RL-H 1800:
8K
bytes
Keyboard:
65
positive-action
keys,
redefinable
with
overlays, interrupt
driven,
with
2-key
rollover
Display
:
Continuous
liquid crystal d isplay (LCD) with an 8 by
159 dot
matrix, plus 8 "Blip"
dots above
corresponding
Attention
Indicators
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