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8. Wedge A shown in Fig. 2 should be fixed within a range of 45° to
the left of the vertical line as shown.
9. After inserting wedge A, insert wedges B, C and D. / The wedges
should be set 90° apart from each other.
10. Be certain that the four wedges are firmly fixed and the
Deflection Yoke is tightly clamped in place otherwise the
Deflection Yoke may shift its position and cause a loss of
convergence and purity.
4.5. Adjustment of CRT VRS
NOTE: FOR FLAT CRT ONLY
PREPARATION
1. Set DY to CRT not to tilt up and down left and right
deflection.
2. Set CY to CRT and set CY magnet primarily.
Pur Mg : Set Pur Mg that 2 magnets are (top position)
VRS Mag : Set VRS Mg that 2 magnets are (horizontal position)
only 21", 25" & 29"
3. Set geomagnetic corection DAC. AS IN TABLE 1.
ADJUSTMENT
1. Receive the white balance pattern.
2. Adjust V-CENTER.
3. Set R, B CUT OFF to minimum, and set G CUT OFF to center.
4. Receive the aging pattern.
5. Set 2 magnet of vertical position to up and down equally so that
center part of CRT (Fig 4)
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