E-71
Replacement Procedure
1. Turn the power off by pressing
@
o
.
2. Remove the two screws. (Fig. 1)
3. Slide the battery cover slightly
and lift it to remove.
4. Remove the used battery by
prying it out with a ball-point pen
or other similar pointed device.
(Fig. 2)
5. Install one new battery. Make
sure the “
+
” side is facing up.
6. Replace the cover and screws.
7. Press the RESET switch (on the
back) with the tip of a ball-point pen or similar object.
8. Adjust the display contrast. See “Adjusting the Display
Contrast”.
• Make sure that the display appears as shown below.
If the display does not appear as shown, remove the
battery, reinstall it, and check the display once again.
Automatic Power Off Function
This calculator will turn itself off to save battery power if
no key is pressed for approximately 10 minutes.
Fig. 1
Fig. 2
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