NEC MultiSync FP1350 Service Manual page 81

9. Purity
Adjustment Magnetic Field by three dimension magnetic field system.
Setting of the Landing meter (KLD-01 made by KAMAYA)
Volt: 2.0V Time: 50ms
* Adjust this monitor after a minimum of 90 minutes to allow unit to reach ambient operating temperature.
(Use the Self Test screen. Refer item 7-5-3. About Self Test.)
1) Turn the CRT face to east, and the outside degauss is done, and demagnetization is done again in the
Degauss power source.
The degauss of the outside is conducted in the front face, both sides, the base, the top panel.
But, degauss is unnecessary for the chassis of the part of aluminum.
2) Receive signal 22(all green) and make sure that the following specifications are satisfied.
Picture Size
Picture Position
3) Open Menu (S), TAG 5 "EMF TOP RIGHT".
4) The four corners (Within 3*3cm) of the screen (Fig 9-3) are measured by the Landing meter, and the value
of X when the value of Y was made 0 is measured.
When measured value is more than ±3%, Adjust "+","-" SW so that items of each four corners the following
standards.
-3% ≤ × ≤ +3%
5) Measure that the items of each four corners are -3% ≤ × ≤ +3%
When it is not in the adjustment standard, 4), 5) clause are repeated.
Top Right
Bottom Right
EMF TOP LEFT
EMF BOTTOM LEFT
Signal: No. 22 (1600*1200@75Hz) All green
GAIN: 7
H: 396mm±1.0mm V: 297mm±1.0mm
H: | XLeft - Xright | ≤ 1.0mm
V: | Xtop - Xbottom | ≤ 1.0mm
: EMF TOP RIGHT
: EMF BOTTOM RIGHT
EMF TOP RIGHT
EMF BOTTOM RIGHT
Fig 9-1 Landing measurement point
Don't use "GLOBAL SYNC" when you adjust it.
Top Left
Bottom Left
The one within 3*3cm
from each corner is
adjusted.
5-40
: EMF TOP LEFT
: EMF BOTTOM LEFT