Casio IT-2000D - Manual (Page 26)

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OFF Factors
The OFF factors refer to various causes that make the system enter the OFF state (suspend state), as
follows:
OFF factor Description Suspend
Power switch System operation can be suspended by holding down
the Power switch for more than a second. (see note)
Normal
Auto Power OFF
(APO) System operation automatically shifts to the suspend
state if key or touch panel operation is not performed
for a specified period of time.
The duration until Auto Power OFF occurs can be set
and modified through the System Menu or system
library. Normal
Software Power OFF The system can be made to enter the suspend state by
calling the system library from the application
program.
Normal
Power OFF due to
time-out of low
battery voltage
(LB1) alarm The system will issue an alarm (buzzer) if the
remaining battery voltage falls below the low main
battery voltage alarm level. If this occurs, recharge the
battery or replace it within ten minutes. If the battery is
not replaced or recharged the system automatically
shifts to the suspend state to protect the data. Normal
If main battery
voltage falls to an
inoperable level
(LB0) If the terminal is used while the LB1 alarm, mentioned
above, is sounding, the main battery voltage may reach
the LB0 level. If this occurs the system will execute
the critical suspend process and forcibly turn off the
power. Therefore, if the LB1 alarm sounds, recharge
or replace the battery as soon as possible. Critical
Power OFF due to
RESET switch
pressed Press the RESET switch to forcibly turn off the system
power. If this is attempted to initiate the System Menu,
it is strongly recommended to complete the application
running at present then turn off the system power with
the Power switch before hand. Restart
For more information about LB0 and LB1, refer to Chapter 2.2.4, "Battery Voltage Monitoring
Process".
For information about the system library refer to Chapter 7.6.2. “System Library”.
For information about the System Menu refer to Chapter 3 “System Menu”.
For information about the method used by each application to acquire a power ON/OFF event, refer
to Appendix C Acquisition of Suspend/Resume Event and Power Status.