Service - HP 25 Owner's Handbook Manual

Programmable scientific calculator
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assories Serv ce and Ma ntenance
105
If you use your HP-25 extensively in field work or during travel,
you
may
want
to
order the optional
Reserve
Power Pack
,
con-
sisting of a battery charging attachment and a spare battery
pack
.
The Reserve Power Pack enables you
to
charge one
battery
pack while using the other in
the
calculator. See the
Accessory Brochure shipped with the calculator for details.
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 along with your HP-25 and
battery
charger/
ac adapter to Hewlett-Packard according
to the
shipping in-
structions. If the battery pack
is
out of warranty, see your
nearest dealer or use the Accessory Order Form provided with
your HP-25 to order a replacement.
Service
Low Power
When you are operating from battery power in RUN
mode,
all
decimal points except the true one light
to
warn you that you
have
a minimum of 1 minute of operating time
left.
1
6
0.2. . .
.
. .
231
Low Power Display
1
True Decimal Point
You must
then
either operate the calculator from the battery
charger/ac adapter as described under AC Line Operation, or
you can substitute a fully charged battery pack for the one in the
calculator.
Blank Display
If
the
display blanks out, turn the HP-25 OFF, then ON
.
!flo.ool
does not appear
in
the display in RUN mode, check the following
;
1. If
battery
charger is attached
to the
H P-25
,
make sure it is
plugged
into an ac outlet. If not, turn
the
calculator OFF
before plugging
the charger into the ac outlet.
2. Examine battery
pack
to see if the contacts are dirty
.
3. Substitute a fully charged battery pack, if available
,
for the
one that was in the calculator.
4.
If
display is still blank, try operating the HP-25 using the
charger (with the batteries in
the
calculator).
5.
If, after step 4, display is still blank, service
is
required
.
(Refer to Warranty paragraphs.)

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