Calculated Industries 4018 - Manual (Page 31)

P
OCKET
R
EFERENCE
G
UIDE
— 27
Replacing the Battery
1) Hold calculator upright with back of
calculator toward you.
2) Lift battery holder out.
3) Remove old battery.
4) Place new battery with positive side
against the bottom of the holder.
5) Insert holder into calculator with
positive side of battery facing back of
calculator.
Reset
If your calculator should ever “lock up,”
press Reset — a small hole located
toward the lower right-hand corner of the
back of the calculator — to perform a total
reset.