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Owner's Information
Rechargeable Battery Care
You will know that the battery packs are recharging if the battery door on the HP 827 1 8A is warm to
the touch.
After 8 or more hours of recharging, the battery packs should be fully charged.
If
rechargeable battery packs seem to discharge very quickly, the problem may be that the battery pack has
been charged repeatedly at shallow levels due to the low current drain of the HP 8271 8A. In that case,
disconnect the unit from its power outlet, type
::::T A t·WB\'
ot·~
[RTN]
in EDIT mode, and leave the
HP-75 and HP 82718A turned on until the battery voltage drops to the point at which the HP-75
suspends operations and turns itself off (as described in "Low Battery Safeguards"). Then reconnect the
unit to a power outlet for at least 10 hours to recharge the battery pack fully.
WARNING
Do not attempt to incinerate or mutilate battery packs-the packs may
burst or release toxic materials.
Do not connect together or otherwise short-circuit the battery pack
terminals-the packs may melt or cause serious burns.
The battery packs are warranted for 1 year and will be replaced if they don't work properly during the
warranty period. Return defective packs to Hewlett-Packard according to the shipping instructions later
in this section. (If you are in doubt about the cause of the problem, return the complete HP-75 and
HP 82718A along with the battery packs and the ac adapter/recharger.) If the battery packs are out of
warranty, see your nearest dealer to order replacements.
GENERAL CLEANING INFORMATION
The HP 82 718A can be cleaned with a soft cloth dampened either in clean water or in water containing a
mild detergent. Don't use an excessively wet cloth or allow water inside the HP 82718A. Avoid abrasive
cleaners.
VERIFYING PROPER OPERATION
If you suspect that your HP 82 718A is not operating properly and may require service, troubleshoot your
unit this way:
98
1)
Turn the HP-75 off. Press
[SHIFT]
[ATTN]
or type B\'E
[RTN].
2) Plug the unit into a power outlet using the ac adapter/recharger.
3) Turn the unit back on by pressing
[ATTN].
The display should show a blinking cursor and either
the BASIC prompt
C»
or the text prompt (:). If
t'IEt'1 l e d i dn
I
t.
se
1
eet. appears, the
HP 82718A has a hardware failure and requires service.
4) To check the operation of the modem, type: I
t· · 1 I
T
I
AL I
ZE
II:
t'10Dt'1
11
I~
t'1ODEt'1
Cti··~ I~ ~'lA
I
T
10
I~
DI::::;F' t'10DHU
[RTN].
Approximately 30 s later, you should see
roOK
appear in th
display. If this operation takes significantly longer than 30 s, the modem has failed its self-test,
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