8400-M022-O1 Rev K Model 190 Indicator
Touch Key Lock Out Function
The 190 firmware provides a means for locking out the capacitive touch keys. When the keys
are locked out, any activation of the keys, whether intentional or accidental, will be ignored.
NOTE: This function is available in firmware version 1.0.13 or newer.
Lock Out the Keys
1. To lock out the keys, touch the ON/OFF, PRINT, Fn, and UNITS keys sequentially in
that order within approximately four seconds.
2. The display will briefly show LoCd.
3. If any key is touched, all of the key LEDs will flash briefly and the touch will be ignored.
Note that it is not possible to turn the indicator off with the ON/OFF key when the keys
are locked out.
Re-Enable the Locked-Out Keys
1. To re-enable the keys, touch the ON/OFF, PRINT, Fn, and UNITS keys sequentially in
that order within approximately four seconds.
2. The display will briefly show UnLoCd.
3. Normal touch key operation will resume.
NOTE: If power is lost when the keys are locked out, the keys will not be locked
out when power is restored. The key sequence for locking out the keys will have
to be entered again to lock out the keys.
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