SA4 - LED Indicators Diagnosis

Problem/Question

Printer stop working, unable to print label.

LED blinks continuously.

Applicable To

SA408, SA412, SA412E

Resolution/Answer

Refer to LED indications listed below to understand possible solutions to resolve the problems printer run into.

LED Indicators: Power and Ready LEDs blink at the same tempo

Power LED	Ready LED
ON	ON
OFF	OFF

Possible Problems	Solutions	Remarks
Media sensor cannot index label gaps	Check the label path Check the label sensor	If a continuous label roll is in use, set “continuous media” printing in driver settings or commands.
Media out	Install a new label roll
Paper jam	Recover the jam

LED Indicators: Power and Ready LEDs blink alternately

Power LED	Ready LED
ON	OFF
OFF	ON

Possible Problems	Solutions	Remarks
Ribbon out	Install a new ribbon roll	Set “Direct Thermal” printing by driver or commands if no ribbon is required.

LED Indicators: Only the Power LED blinks

Power LED	Ready LED
ON	ON
OFF	ON

Possible Problems	Solutions	Remarks
Serial IO error	Check serial baud rate at both of your system and the printer.	For serial interface only
Cutter has failed, or there is paper jam inside the cutter.	Check the cutter or recover paper jam. Only applicable when cutter	Only applicable when cutter mode to cutter mode.
Other possible hardware errors.	Contact the reseller for further service.

LED Indicators: Only the Ready LED blinks

Power LED	Ready LED
ON	ON
ON	OFF

Possible Problems	Solutions
Print head needs to cool down	Printing will stop until the print head cools to normal printing temperature. Once it completes, the printer will automatically resume the printing tasks sent previously.
Printer head module unlatched	Close the printer module and then press firmly at both the left and the right of printer module to properly latch
Printer is in PAUSE status	Press FEED button to resume printing.
Printer is receiving data	As soon as all the data has been received, Ready LED will stay solid green and automatically resume normal operation.

03-80123-EN