DCA Intertel s’print BT User Manual page 10

The red LED displays printer operating status and this check is
performed "on-line". Table 1 lists operating statuses and the LED signals connected
to them:
LED Status
Always off
Always on
very slow blinking
(one blink every three seconds)
slow blinking
(one blink every second)
fast blinking
(one blink every half second)
Very fast blinking
(seven blinks per second)
DCA Intertel
Description
Printer off
Printer on - no fault with
batteries recharing
Printer on - no fault with
batteries recharing
Paper out message
Resettable error (heat overheating,
battery voltage error)
In process of shutting off
10 DCA Intertel