II.MAIN SUBROTINE LOOP

Main loop start

Process Power-saving status ( according to below flow-chart result)

)

Check GMZAN IFM status .is change or not.

And check Signal cable status ( cable not connected or not )

** IFM is the register which measured the HSYN & Vsyn status

No

 

Yes, IFM have change

 

 

 

 

 

 

 

 

 

Is current system status in Power-saving ?

 

 

 

 

 

 

 

 

No

 

 

 

 

 

 

 

Check the IFM result is in the standard

 

 

 

Mode table ?

 

Yes

Yes

Wake-up GMZAN1 (because GMZAN1 was in partial sleeping state)

Set mode index & parameter Set change mode flag

No

 

Yes

Check the IFM result is in the user mode table ?

No

Out of range ( input not support) be confirm

No

confirm the frequency ( Hsyn or Vsyn) from IFM already been changed ? ( check the change mode flag)

Yes , freq had been change

Process ( turn off OSD , setting GMZAN1according to above parameter,set LED status, set backlight status)

Check Auto-config mode flag already been set?

Yes

Read Key status and Process on OSD-screen

Yes

Check Factory mode flag= 1

No

Monitoring the time-out of osd status ( if no key input persist for 10 sec , the osd time-out counter will trigger )

No

Do Auto-config automatically

if the RS232 buffer is full, process the command( while adjust white-balance in factory mode)

14

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AOC P/N : 41A50-144 service manual II. Main Subrotine Loop

P/N : 41A50-144 specifications

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