flashing:•No application or application corrupted: reload program.
•If using wireless communications: flashing indicator is normal while data is being transmitted or received.
9.Yellow error light always on,
or 
flashing:•Check that media is loaded and that the print head is closed and securely latched.
10.Skips labels:•Check media for top of form sense mark or label gap.
•Check that the maximum print field has not been exceeded on label.
•Ensure bar or gap sensor is not blocked or malfunctioning
11.Communication error:•Check media is loaded, head is closed and error
light is off.
•Check baud rate.
•Replace cable to terminal.
12.Label jam:•Open head release latch and media cover.
•Generously apply alcohol to printer in area of jammed label.
13.Blank LCD screen (only for units with LCD control panel)•No application loaded or application corrupted: reload program.
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QL Plus Series User Guide