11
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- Unlock the keyboard
The terminal is equipped with a keyboard lock feature, which can be enabled or disabled us-
ing the
Keyboard unlock length
parameter in the
SYSTEM
screen as described below. If the
keyboard lock is disabled, then the keyboard functions will always be active. If the keyboard
lock is enabled, and the terminal is in the
NORMAL
screen without any key activation for 10
minutes (or directly after power-on), the keyboard will automatically lock. When the key-
board is locked, the
NORMAL
screen will appear as follows without any icons above the keys:
To unlock the keyboard:
•
Press any key to start the keyboard unlock sequence.
•
Press the indicated keys one at a time until the required sequence (specified by the
Keyboard unlock length
parameter) is completed without error.
Please notice:
This feature is disabled by setting the
Keyboard unlock length
parameter in
the
SYSTEM
screen to 0. Any other value specifies the length of the key sequence that must
be pressed correctly to unlock a locked keyboard.
- Unlock for parameter update
Parameters cannot be changed and actions not performed when the system is powered on.
Before such operations are possible the parameters must be unlocked:
•
Press
F
to invoke the menu system.
•
Press to highlight the
SERVICE MODE
menu item.
•
Press
to select the
SETUP
screen.
•
Press
F
to invoke the menu where the
SYSTEM
menu item is highlighted.
•
Press
to select the
SYSTEM
screen.
•
Press to highlight the
Parameters
entry.
•
Press
to select the
ENTER UNLOCK PARAM
parameter entry.
•
Enter the password 1357 and press
. Parameters are now unlocked and can be
changed. Press
Clr
once to return to the
SETUP
screen or twice to return to the
NORMAL
screen. Please see below in section
page 12, for details on
how to enter values (like the password).
