NEC MultiSync FP1350 Service Manual page 60

4. Deflection Distortion Adjustment
Environment: Adjustment Magnetic Field by three dimension magnetic field system.Turn the CRT face to
east and degauss the monitor using an external degaussing coil.
* When distortion amount is confirmed in the hereunder adjusted, It is made the condition that items of the
menu tag 3 or 4 is select, or PROCEED is used in the condition that items is select, and turn off condition
the OSM.
* After 4-1 section and 4-2 section are adjusted, Redo adjusts 4-3 sections to 4-8 sections in the case of the
manual adjustment. When distortion left at the top-bottom corner, the adjusted of 4-9 section is done by
this adjustment. 4-10 section is confirmed at the end.
4-1. Horizontal / Vertical Size Rough Adjustment
1) Open Menu (S), TAG2 "H.POSITION", "V.POSITION", "H.SIZE", "V.SIZE" and adjust the screen size to
the following values.
Horizontal Size: 396 mm ± 3 mm
Vertical Size: 297 mm ± 3 mm
Horizontal Picture Position: | Xleft - XRight | ≤ 3.0 mm
Vertical Picture Position: | XTop - XBottom | ≤ 2.0 mm
4-2. Picture Tilt Adjustment
1) Receive signal 33.
2) Open Menu (S) TAG3 "ROTATE" and make sure that initial value of adjustment data is "128".
3) Turn the CRT face to east and degauss the monitor using an external degaussing coil.
4) Make sure that the picture tilt meets the following specification.
X ≤ ± 2.0 mm
If out of specification, correct CRT assembly.
5) Open Menu (S) TAG3 "ROTATE" and make sure that the picture is tilted as follows by "+", "-" SW.
"-" SW: counterclockwise
"+" SW: clockwise
6) Open Menu (S) TAG3 "ROTATE" and adjust "+", "-" SW so that the picture tilt meets the following standards.
The maximum correction is ±1.0mm.
X ≤ ± 1.0 mm
Xleft
Fig 4-1 Screen Size Rough Adjustment
Signal: No. 33 (788*1200@75Hz) Cross Hatch Pattern
Signal: No. 33 (788*1200@75Hz) All white
XRight
5-19
XTop
XBottom