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4.3.3 Battery-Powered Operation
The printer is powered only from the battery pack if the AC adapter is left
disconnected. The printer is ready to be run by the battery when its POWER
switch is pressed ON (POWER lamp lit in green). Be sure to press the POWER
switch OFF (POWER lamp goes off) after every use.
Protecting the Battery Pack
(1) If the battery voltage drops to around 5.9 V, the POWER lamp starts blinking in
green to indicate low voltage. The printer can deliver a low voltage alarm to
an external device (by setting DIP switch1-5).
(2) If the battery voltage drops further to around 5.6 V, the printer is automatically
turned off.
(3) If the printer is powered up again, the POWER lamp will either come on or
start blinking in green (in Standby mode). If printing resumes, the printer will
shut down soon again due to low battery voltage.
* In the case of (1) or (2) above, the battery pack requires recharging.
Low Voltage Signal
If the battery voltage drops to 5.9 V while in battery-powered operation, the printer
can deliver a low voltage signal.
(1) Serial interface → Sends a DTR indicating low voltage.
DIP switch1-5
OFF = Send no DTR.
ON = Send DTR.
(2) Parallel interface → Sends a SELECT (L) indicating low voltage.
DIP switch1-5
OFF = Send no SELECT.
ON = Send SELECT.
Power Save and Auto Power Off Features
(1) If the printer receives no print data from the host, or not operated, for a set
time period, it enters power save mode to reduce unnecessary battery
consumption. (The timer is set to 10 minutes by default. It can be set with a
DIP switch.)
POWER lamp's luminance in green is reduced to a half, indicating that the
printer is in power save mode.
(2) If the power save mode continues for another 10 minutes, the auto power off
feature automatically turns the printer off.
(3) The printer can be repowered by cycling the POWER switch.
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