Epson LQ-590 - Changing the Lock-Out Mode Setting

Control Panel 127
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Caution:
Whenever you turn off the printer, wait at least five seconds
before turning it back on; otherwise, you may damage the
printer.
2. Turn on the printer while holding down both the Load/Eject
and Pause buttons. The printer beeps twice, indicating that
the lock-out mode has been turned on.
When the lock-out mode is on, the Pause and Paper Out
lights flash simultaneously when the locked buttons are
pushed.
To turn off the lock-out mode, repeat steps 1 and 2. The printer
beeps once, indicating that the lock-out mode has been turned off.
See “Changing the lock-out mode setting” on page 127 for
instructions on how to change the functions to be locked.
Changing the lock-out mode setting
The following table shows the basic function of each button in the
lock-out setting mode.
You can select the printer functions to be locked while the lock-out
mode is on according to your needs.
Button Basic function
ItemD button Selects the next menu parameter.
ItemU button Selects the previous menu parameter.
Set button Changes the value in the selected menu.