LED Light Patterns - Impact and Thermal Printers – MealSuite

This internal article describes the LED light patterns on a Star Micronics thermal printer.

Thermal Printer: LED Light Patterns - Recoverable Errors

Error Description	POWER (Green)	ERROR (Red)	Recovery Condition
Thermal head high temperature detection error	Flashes at 1 second intervals.	Off	The printer recovers automatically when the thermal head cools.
Cover open error	On	On	The printer recovers when you close the cover.
Paper near end error	On	Flashes at 4 second intervals.	The printer recovers when you set a new paper roll and close the rear cover.
Paper out error	On	Flashes at 0.5 second intervals.	The printer recovers when you set a new paper roll and close the cover.
Ethernet link disconnection detection (Physical link disconnection)	Flashes at 4 second intervals.	Flashes at 4 second intervals.	Connect an Ethernet cable.
Ethernet link disconnection detection (IP Address lost)	Flashes at 0.25 second intervals.	Flashes at 0.25 second intervals.	Printer unable to obtain IP Address from Network. Set the correct IP Address and restart the printer.

Error Description	POWER	ERROR	Cause	Recovery Condition
Cutter error	Off	Flashes at 0.25 second intervals.	Paper cutting in progress error	After you restart the printer, the printer recovers when the mobile cutter returns to its home position.
Flash memory error	Off	Flashes at 1 second intervals.	Flash memory access error.	-
EEPROM error	Off	Flashes at 1.5 second intervals.	This is not a recoverable error.	(RMA)
SRAM error	Off	Flashes at 2 second intervals.	RAM access error.	-
Head thermistor error	Off	Flashes at 3 second intervals.	Detection of head thermistor error.	-
Power voltage error	Off	Flashes at 4 second intervals.	Detection of power voltage error.	Check the condition of the power supply and restart the printer.