HP HP-67 - Page 316

312 Service and Maintenance
CAUTION
Operating the HP-67 from the ac line with the battery pack
removed may result in damage to your calculator.
The procedure for using the ac adapter/recharger is as follows:
1. If your recharger has a line-voltage select switch, make sure the
switch is set to the proper voltage. The two line voltage ranges
are 86 to 127 volts and 172 to 254 volts.
CAUTION
Your HP-67 may be damaged if it is connected to the
charger when the charger is not set for the correct line
voltage.
2. Set the HP-67 power switch to OFF.
3. Insert the recharger plug into the rear connector of the HP-67
and insert the power plug into a live power outlet.
4. Set the power switch to ON. If the W/PRGM-RUN switch is set
to RUN, you should see a display of .
5. Set the power switch to OFF if you don’t want to use the
calculator while it is charging.
6. At the end of the charging period, you may continue to use your
HP-67 with ac power or proceed to the next step for battery-only
operation.
7. With the power switch set to OFF, disconnect the battery
charger from both the power receptable and the HP-67.
CAUTION
The use of a recharger other than an HP recharger like the
one provided with your HP-67 may result in damage to your
calculator.