Citizen Systems Citizen PPU PPU-700 - Manual (Page 33)

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4.14 Operation Panel and Error Indication
(1) POWER LED (Green)
ON: Printer is powered on.
OFF: Printer is powered off.
Blinking: The printer is in some operation.
(2) ERROR LED (Red)
The ON/Blink status indicates the status of the error. Blinking also occurs
while the printer is waiting for macro execution. (For details, refer to
Command Details and Macro execution command.)
ERROR POWER LED ERROR LED
Paper end Lights Lights
Paper near-end Lights Lights
Cover open Lights Lights
Cutter motor lock Lights
Head overheat Lights
Memory check error Lights
Low voltage error Lights
High voltage error Lights
Sum check error
CPU abnormal operation
Presenter error Lights
Black marked paper Lights
detection error
Macro execution wait Lights