Sharp EL-1611PA Mode D'emploi page 10

BATTERY REPLACEMENT (OPTION)
To Install or Replace Batteries — When the batteries become
weak, the display will work but not the printer. This indicates
that you should replace the batteries.
Battery: Manganese dry battery, size AA (or R6) × 4
1. Turn off power by pressing
2. Remove the battery cover by sliding it in the direction of the
arrow on the cover.
3. Replace the batteries. Be sure that the "+" and "–" marks on
the battery correspond to the "+" and "–" marks in the
calculator. Always put back the 4 batteries at the same time.
4. Put back the battery cover.
5. Press the RESET switch on the back of the unit.
Note: Due to solvent leakage of the battery, keeping a used
battery in the battery compartment may result in damage
to the calculator. Remove a used battery promptly.
8
.
There are several situations which will cause an overflow or an
error condition.
When this occurs, an error symbol "E" will be displayed and
"- - - - - - -" will be printed, and all keys will electronically lock
except , and .
must be depressed to restart the calculation.
The contents of the memory at the time of the error are retained.
Battery cover
ERRORS