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TM 10-7420-210-13&P
In Case of Difficulty
If you have difficulty with your calculator, consult the
following instructions for help in correcting the problem.
1.
Be sure the POWER switch is ON. The batteries may
need to be replaced, or the AC adapter may be
connected incorrectly.
2.
If the difficulty involves calculation errors or the
calculator does not respond to keyboard entries.
a.
Press [C]. The calculator should display 0 and print
0 C. Check the switch settings and repeat the
calculations
b.
Turn the power off for ten seconds and then back on
again Repeat the calculations.
c.
Review the operating instructions to be certain that
calculations have been performed in the manner
described in this book. Improper key sequences
and improper switch positioning may result in
incorrect answers.
3.
If no printing shows on the tape.
a.
The PRINTER switch may be in the OFF position
and should be turned ON.
b.
The ink roller may be incorrectly installed or m need
of replacement.
If these procedures do not correct the difficulty, refer to the
"Service Information" section of this manual.
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