General Guide; Turning On Or Off; Battery Replacement; Auto Power-Off Function - Citizen SR-281 User Manual

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General Guide

Turning on or off

To turn the calculator on, press [ ON/C ] ; To turn the calculator off,
press [ 2nd ] [ OFF ].

Battery replacement

SR-281 is powered by two alkaline batteries (GP76A or LR44).
SR-282 is powered two AA-size ( UM-3 ) batteries. If the display
becomes dim and difficult to read, the batteries should be replaced as
soon as possible.
To replace batteries :
1) Slide the battery compartment cover in the direction indicated by
the arrow and remove it.
2) Remove the old batteries and install new ones with polarity in
correct directions, then replace the battery compartment cover
and press [ ON/C ].

Auto power-off function

This calculator automatically turns it off when not operated for
approximately 6~9 minutes. It can be reactivated by pressing [ ON/C ]
key and the display, memory, settings are retained.

Reset operation

If the calculator is on but you get unexpected results, press [ MODE ]
[ 4 ] ( RESET ) in sequence. A message appears on the display to
confirm whether you want to reset the calculator and clear memory
contents.
RESET : N Y
Move the cursor to " Y " by [
variables, pending operations, statistical data, answers, all previous
entries, and memory; To cancel the reset operation without clearing
the calculator, please choose " N ".
If the calculator is lock and further key operations becomes impossible,
please press [ 0 ] [ CE ] at the same time to release the condition. It will
return all settings to default settings.
], then press [
-E2-
] to clear all