Victor 1225-3A - Manual (Page 9)

DATE FORMAT: While displaying the date, depressing the %±
key allows changingthe date format mode from MM-DD-YYYY to
DD-MM-YYYY or YYYY-MM-DD. The default date format is
MM-DD-YYYY.
REPLACING THE BACK-UP BATTERY:
1) Using a screwdriver remove the three screws on the back cover
of the calculator.
2) To separate the front and back cover halves, carefully insert and
twist a flat-blade screwdriver between them.
3) Use a flat-blade screwdriver to gently pry out the battery.
4) Position the new battery so the positive (+) side is up. Slide one
edge of the battery under the tab on the battery holder, then
press the battery into place.
5) Snap the cover halves back together. Then reinsert and tighten
the screws.
NOTE: Memory backup battery retains the tax rate, calendar and
clock setting,
when the power is off or even when the AC cord is
disconnected.
Battery: 1 Lithium battery (Type: CR 2032)
Battery life: Backup time 1000 hours
RESET:
Electromagnetic interference or electrostatic discharge may cause
the display to malfunction or the contents of the memory to be
lost or altered. Should this occur, use the tip of a ball point pen
(or similar sharp object) to press the [RESET] button on the bottom
of the calculator. After resetting, be sure to set the tax rate, time
and date again.
RESET RESET