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Service and Maintenance
311
After construction, every calculatoris thoroughly inspected forelec-
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 yourcalculator. 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
priorto starting a new calculationif 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
chargeris plugged into the poweroutlet and used during the charging
cycle.
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