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Service and Maintenance
315
Battery Care
When not being used, the batteries in your HP-67 have a self-
discharge rate of approximately 1% of available charge per day. After
30 days, a battery pack could have only 50 to 75% of its charge
remaining, and the calculator might not even turn on. If a calculator
fails to turn on, you could substitute a charged battery pack, if
available, for the one in the calculator. The discharged battery pack
should be charged for at least 14 hours.
If a battery pack will not hold a charge and seems to discharge very
quickly in use, it may be defective. The battery pack is warranted for
one year, and if the warranty is in effect, return the defective pack to
Hewlett-Packard according to the shipping instructions. (If you are in
doubt about the cause of the problem, return the complete HP-67 along
with its battery pack and ac adapter/recharger.) If the battery packis
out of warranty, see your nearest dealer or use the Accessory Order
Form provided with your HP-67 to order a replacement.
WARNING
Do not attemptto incinerate or mutilate your HP-67 battery
pack—the pack may burst or release toxic materials.
Magnetic Card Maintenance
Try to keep your cards as clean and free of oil, grease, and dirt as
possible. Dirty cards can only degrade the performance of your card
reader. Cards may be cleaned with alcohol and a soft cloth.
Minimize the exposure of your calculatorto dusty, dirty environments
by storing it in the soft carrying case when not in use. Each card pack
contains one head cleaning card.
ABRASIVE CARD FOR CLEANING RECORDING HEAD
CONSULT MANUAL FOR RECOMMENDED USE
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