PN-L602B (serv.man6) - Sharp Monitor Service Manual (repair manual). Page 113

PN-L702B/L602B　FIRMWARE UPDATA PROCEDURES/EDID WRITING PROCEDURES

 5 – 12

■ CANCELING WRITE-PROTECT OF EDID BY THE SERIAL COMMAND

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When you use the serial command in Windows Vista, because the Hyper terminal is not equipped with in this model, use other software corre-
sponding to serial communication.

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Connection method: Connect the serial port of PC with the RS-232C input pin of the monitor by using the straight cable. 

1 ) Execute [START] - [Program] - [Accessory] - [Communication] - 

[Hyper terminal]. 
The window below is displayed. Enter an optional name and press

[OK].

2 ) The window below is displayed. Select the number of COM con-

nected to the monitor and press [OK.]

3 ) The communication setting screen is displayed. 

Set as shown below. 

4 ) Set the local echo. 

Select “Property” in the file menu. 

5 ) Select [Settings] tab and press [ASCII Setup...].

6 ) Check “Send line ends with line feeds” and “Echo typed characters

locally” and press [OK]. 

7 ) Press [Enter] key once and check to confirm that “OK” is returned.

If “OK” is returned, the connection is proper. 

8 ) Send the EDWP command. 

Enter “EDPW1230” and press [Enter] key.

If “OK” is returned, the EDID write-protect is canceled.

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The write protect can be released in SERVICE MENU 2 as well.
3Refer to page 4 - 8  "6 - 1. EDID WRITE PROTECT RELEASE".