ViewSonic PJL6223 User Manual page 60

Setting
Security (Key lock and PIN code lock)
This function allows you to use the Key lock and PIN code
lock function to set the security for the projector operation.
Key lock
This function locks the top control and remote control
Select Key lock
and select the desired item by pressing the Point
buttons.
..... Unlocked.
.....
.....
If the top control accidentally becomes locked and you do
not have the remote control nearby or there is something
wrong with your remote control, contact the dealer where
you purchased the projector or the service center.
PIN code lock
This function prevents the projector from being operated
setting options for security.
Off ........... Unlocked.
On1 ......... Enter the PIN code every time turning on
On2 ......... Enter the PIN code to operate the projector
Whenever you change the PIN code lock setting or the
code at the factory.
If you want to change the PIN code lock setting, press
appears.
When the projector is locked with the PIN code, the
Security icon appears on the guide.
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unlock, use the remote control.
To unlock, use the top control.
the projector.
once the power cord is disconnected; as
long as the AC power cord is connected,
the projector can be operated without a
PIN code.
Key lock
PIN code lock