NEC MultiSync LCD1970NX Service Manual page 56

6) Enter Factory mode, a tag 4 is select by the "6(DOWN)" or "5(UP)" key move cursor to EDID WP (EDID
write-protection).
7) A numerical value is set to "0" (OFF) and EDID write-protection is canceled.
8) When the screen as shown below appears, check to [EDID_READ] and press the [OK] button.
9) When the screen as shown below appears, confirm that the correct data are displayed in the columns of
EDID DATA CONTENTS and Serial information.
If all the displayed data are [FF] or the like, or if the serial number is different from that of the corresponding
unit, then EDID data writing should be carried out.
10) When a screen of Item 6 is displayed by pressing the [BACK] button, check to [EDID_WRITE] and press
the [OK] button.
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