Canon LV-7490 Brochure

LV-7490    Basic Serial Command Specifications   

                                                                                     

  

20 

Status : Power ON 

Normal image is on the screen. 

Status: Standby 

When the status is Standby, Status Read Commands are always acceptable, but 

Functional Execution Commands are not acceptable except POWER ON Command.

 

Status: Countdown in process 

When “Display” in Setting Menu is ON and POWER ON is executed, it starts 

Countdown. 

When “Display” in Setting Menu is OFF, processing Countdown is not executed and the 

status quickly moves to Power ON.

 

Status: Cooling Down in process 

When the status is Power ON, and POWER OFF Command (“C01”[CR]) is executed, it 

moves to Cooling Down status. 

This status automatically moves to Standby after lamp turns off and the fan spin finishes 

after about 90 seconds. The fan spin time depends on a model. 

This function is used to cool down the lamps and other optical parts and is quite 

important for projector’s reliability.   

During this time, Functional Execution Commands are invalid. 

Status: Power Failure 

When the power supply voltage inside the projector reaches abnormal status, the 

projector is automatically turned off. The projector returns “10”[CR], which shows it 

moves to Power OFF status due to power failure. Fan also stops unlike Cooling Down 

status.

 

Status: Cooling Down in process due to Temperature Anomaly 

When the inside temperature is out of the operating temperature, it automatically starts 

Cooling Down. Response for this status is “28”[CR].   

Even if the temperature decreases during this process, Cooling Down is executed. 

Status: Coming back after temperature anomaly 

When the status moves to Standby after Cooling Down due to temperature anomaly, it 

returns “88” [CR]. 

This shows that the status turns to Standby because of abnormal temperature. 

This status maintains until next operation is done. When Power On is executed, the