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The "1234" is set as the initial PIN code at the factory. Whenever you change the PIN code lock setting or the PIN code (the four-digit number), you are required to enter the PIN code. Enter the PIN code to operate 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. Enter the PIN code every time turning on the projector. This function prevents the projector from being operated by unauthorized persons and provides the following setting options for security. If the top control accidentally becomes locked and you do not have the remote control unit nearby or there is something wrong with your remote control unit, contact the dealer where you purchased the projector or the service center. Select Key lock and then press the OK button, and select the desired item by pressing the Point buttons This function locks the top control and remote control unit buttons to prevent operation by unauthorized persons. This function allows you to use the Key lock and PIN code lock function to set the security for the projector operation. Settings - Security (Key lock and PIN code lock)
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