Seiko TM-U590/U590P - Manual (Page 29)

2-2 Using the Printer
RELEASE
Press this button to release slip paper.
Indicator lights
The control panel lights provide information on printer conditions.
Panel lights
POWER
The POWER light is on when the printer is on.
ERROR
The printer is off-line when the light is on (except during paper
feed using the FORWARD or REVERSE buttons or during self-test
printing).
This indicates an error when the light blinks. See Chapter 3 for
information on what to do.
RELEASE
This light is on when platen and paper feed roller are released so
that slip paper can be inserted.
This light is off when platen and paper feed roller are cramped
together (during printing on slip paper).
SLIP
This light is always on except off or blinking status.
This light is off when ejecting a slip paper.
This light blinks when the printer is in the slip insertion/removal
waiting state or personal check insertion/removal waiting state
(only when the printer is used with the MICR reader).