Cornerstone Peripherals Technology P1500 User Manual

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OPERATION (Continued)
Lock out Function
There are two special LOCK OUT Functions:
1.  Lock Out Function 1
 :
Disables all of the user control buttons
except "Brightness/Contrast adjust”
and “Input Select button”
(1) Power Unit Off
(2) Depress two buttons
(3)  Turn Power On.
2. Lock Out Function 2
 :
Enable all buttons : Turns on all On
Screen Display  functions
(1) Power Unit Off
(2) Depress two buttons
(3) Turn Power On.