Parker KVP2425C05, Service Manual

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g) Adjust VR431 to minimize trapezoidal distortion
h)
Exit factory menu
4.10 Sub-brightness adjustment
a) Receive PAL-D/K PHILIPS signal
b) Select “SB” of factory menu3
c) Adjust “SB” to let things between the sixth and seventh grey scale clear
4.11 OSD adjustment
a) Receive PAL-D/K PHILIPS signal
b) Select OSD H and OSD V of factory menu4. Adjust OSD H and OSD V to let OSD at a specified
place.
c) Exit factory menu
4.12 Degaussing
a) The unit has and auto degaussing circuit, the degaussing circuit works several seconds after turning
on TV
b) If you want to move TV or change the direction, turn off TV and ten minutes later the degaussing
circuit will work
c) For better degaussing effect, you can use magnetic eraser
d) Move the magnetic eraser clockwise before your TV, when it is 2m away from your TV, turn off the
magnetic eraser. If the effect is still not very good, you can adjust “color purity” and “convergence”
4.13 Color purity correction
a) Turn on your TV
b) At least 15 minutes later, use anti-magnetized coil for degaussing
c) Obtain maximum brightness and contrast
d) Select factory menu3 and adjust to let R and B be zero, then let only green raster appear on the
screen at the moment
e) Loosen screws of deflection yoke frame to let vertical green belt appear on screen only
f) Move the rubber wedge
g) Rotate along neck of picture tube and slide color-purity magnets until the green belt at the middle of
screen and is vertical at the same time
h) Slowly move the deflection yoke backward of forward until the whole green raster appears on screen,
tighten the screws of the deflection yoke
i) Check the color purity of red raster and blue raster
j) Adjust white balance again to obtain white raster
4.14 Convergence correction
4.14.1 Central convergence correction
a) Turn on your TV
a
Fig-3 line scan adjustment