POWER SWITCH & AUTO POWER OFF
This switch turns the printer on and off. If the printer is left on with no activity (no motion of the
print head) for more than 1.5 minutes, the printer will automatically turn off. To turn the printer
back on, turn off the power switch, then turn the power switch back on.
STATUS LED – when operating
The STATUS LED located on the front panel of the printer indicates the following:
OPERATING = RED
CHARGING = GREEN
OPERATING
When the power is turned on, and the printer is not receiving a signal from the T675, the RED
STATUS LED will illuminate steadily. When the printer is receiving a signal from the T675, the
RED STATUS LED will flash rapidly.
When the printer is NOT receiving a signal from the T675 and low battery power is detected, the
RED STATUS LED will flash once per second and the built-in beeper will beep at the same rate.
To reset the low battery condition, turn the printer off and back on. This low power indicator is
useful when troubleshooting printers that suddenly stop printing for no ‘apparent’ reason.
If the printer detects an internal problem during power-on, or if a printer mechanism fails during
operation, the RED STATUS LED will slowly flash indicating an error code. The error code is
displayed by the RED STATUS LED blinking a certain number of times, and after a 2-second
pause, the blinking resumes. Count the number of times to determine the error code. The error
codes are:
01 = LOW BATTERY POWER DETECTED
02 = PRINT HEAD CANNOT FIND HOME POSITION
03 = CANNOT FIND TOP-OF-FORM MARK
04 = PAPER OUT CONDITION DETECTED
05 = BAD CPU RAM OR EPROM
06 = BAD EXTERNAL RAM
07 = BAD REAL-TIME CLOCK
08 = STUCK KEYPAD
09 = FLASH ERASE ERROR
10 = FLASH PROGRAMMING ERROR
CHARGING
When charging power is first connected and if the battery is excessively discharged, the unit will
trickle charge the battery for several minutes until the cell voltage reaches approximately 0.9V.
While this initial trickle charge takes place the GREEN STATUS LED will flash every 1.5 seconds.
Once the trickle charge has raised the cell voltage enough, fast charge will automatically begin
and the GREEN STATUS LED will be illuminated steadily.
When the battery is fully charged, the GREEN STATUS LED will flash 2 times per second. If the
battery is completely charged and the printer is again connected for charging, depending upon the
battery voltage the GREEN STATUS LED will turn on for approx. 1 second 1-2 seconds after the
unit is first connected. The LED then turns off for several minutes and then begins flashing rapidly
2 times per second just as it does when fast charging is complete.
