25
USING THE LCD DISPLAY
3.9 Locking the OSD Menu
Lock the OSD menu to protect the LCD display from unauthorised users or from accidentally pressing the
keypad.
To lock the OSD, press and hold the keypad buttons listed below for at least 5 seconds or until the
O S D
L O C K O U T
message appears.
When the OSD is locked, all keypad buttons are inactivated.
Type of OSD Lock
Lock Operation
Unlock Operation
Lock all buttons
Press and hold the
u
,
p
, and
q
buttons simultaneously for 5 seconds.
Do one of the following to unlock:
• Press and hold the
u
,
p
, and
q
buttons simultaneously for 5
seconds or until the OSD menu
appears.
• Press and hold the
t
,
p
, and
q
buttons simultaneously for 5
seconds or until the OSD menu
appears.
Lock all buttons except
the
POWER
button.
Press and hold the
t
,
p
, and
q
buttons simultaneously for 5 seconds.
