NEC MultiSync FP1350 Service Manual page 65

4-9-4 Bottom Corner Balance Adjustment
1) Open Menu (S), TAG4 "CORNER BOTTOM BAL".
Adjust "+", "-" SW so that the bottom corner forms a right angle. (maximum ± 1.0 mm)
4-10. Overall Distortion Adjustment
1) Confirm that adjustment on steps 4-2 to 4-9 meets the specifications.
2) If undulating, re-adjustment each distortion adjustment.
Undulation is a directional difference of tilt at either AC and CE or both.
Following figures (I) and (II) are example. AB and BC, CD and DE are the direction of tilt.
Undulated correction is the same direction of tilt at AB and BC, CD and DE.
Following figures (III) and (IV) are example. In this state, each adjustment standard must be met.
Fig 4-13 Bottom Corner Balance
Signal: No. 33 (788*1200@75Hz) All white
A
B
C
D
E
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Fig 4-14 Undulated Definition
5-24
( ||| ) ( |V )