Philips 227E3QSU/93 Service Manual page 49

Meridian 3
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6. Click the "Program" to start programming after monitor power on. When it shows "Analog: PASS!, SN write OK!
and DVI: PASS!". The EDID and SN writing process are finished.
13.5 Check the SN
1. Connect the video source and power on monitor.
2. Press the "MENU" button to enter the user menu, and then check the 14 digital SN.
3. If this SN number is the same as what we had written by EDID tool, the EDID and SN writing is completed finally