Calculated Industries 3423 - Manual (Page 76)

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Error Codes
With an incorrect entry or answer beyond the range of the calculator,
the display will show one of the following error messages. To clear
an error, simply press any key.
OFLO — Number Too Large to Display
DIV Error — Attempted to Divide by Zero
TVM Error — Time-Value-of-Money Error
ENT Error — Invalid Entry
PPY Error — Payments Per Year Error
QL Error — Qualifying Error
Auto Shut-Off
Your calculator is designed to shut itself off after about 8-12 minutes
of non-use.
Battery
This model uses one (1) CR2016 battery (included). Should your
calculator display become very dim or erratic, replace the battery.
Note: Please use caution when disposing of your old batteries, as they contain haz-
ardous chemicals.
Replacement batteries are available at most discount or electronics
stores. You may also call Calculated Industries at 1-775-885-4900.
Replacing the Battery: Turn the calculator over and open user
guide door located at the top. Pull battery holder out (top left corner)
and turn over. Remove old battery and slide new battery under tabs.
Turn holder over (negative side facing you) and insert into calculator.