HP HP-67 User Manual

Service and Maintenance 311
After construction, every calculator is thoroughly inspected for elec-
trical or mechanical flaws, and each function is checked for proper
operation.
When you purchase a Hewlett-Packard calculator, you deal with a
company that stands behind its products. Besides an instrument of
unmatched professional quality, you have at your disposal many
extras—a host of accessories to make your calculator more usable,
service that is available worldwide, and support expertise in many
application areas.
Battery Operation
A rechargeable battery pack is provided with your calculator. Be sure
to charge the battery pack before portable use of your calculator.
A fully charged battery pack provides approximately 3 hours of con-
tinuous operation. By turning the power OFF when the calculator is
not in use, the HP-67’s battery pack should easily last throughout a
normal working day. You can extend battery operation time by reduc-
ing the number of digits in the display. Press(s] between calculations
and prior to starting a new calculation if the wait between entries
is extensive.
Note: If.you use your HP-67 extensively in field work or
during travel, you may want to order the Reserve Power
Pack, consisting of a battery charging attachment and
spare battery pack. This enables you to charge one pack
while using the other.
Recharging and AC Line Operation
To avoid any transient voltage from the charger, the HP-67 should be
turned OFF before plugging it in. It can be turned ON again after the
charger is plugged into the power outlet and used during the charging
cycle.
A
discharged
battery
will
be
fully
charged
after
being
connected
to
the
charger
for
a
period
of
14
hours;
overnight
charging
is
recommended.
If
desired,
the
HP-67
can
be
operated
continuously
from
the
ac
line.
The
battery
pack
is
in
no
danger
of
becoming
overcharged.
If
a
battery
is
fully
discharged,
it
must
be
charged
for
at
least
5
minutes
before
a
card
can
be
read.

HP HP-67 Specifications

General

Brand	HP
Model	HP-67
Category	Calculator
Language	English