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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.
5.11. WHITE BALANCE
Item/Preparation
1. Select Service Mode 1.
2. Aging should have been performed over 30 minutes.
3. Receive the white balance pattern.
4. Picture menu : DYNAMIC NORMAL / AI : OFF
5. Degausse the CRT face.
6. Connect the photo sensors of the Colour Analyser to the CRT. /
Note: / CRT cut off adjustment is completed.
5.12. Focus
Item/Preparation
1. Receive a cross-hatch pattern signal.
5.13. Geomagnetic
Item/Preparation
1. Demagnetize the GM-Board around its perimeter with the
Demagnetizer.
2. Set to control: / Geomagnetic.....Auto
5.14. SUB BRIGHT
Adjustment Procedure
1. Adjustment of Low Light
A. Adjustment SUB BRIGHT, so that "Y" axis indicates 6.5.
B. Adjustment R-CUT OFF, so that "Y" axis indicates 0.293.
C. Adjustment B-CUT OFF, so that "X" axis indicates 0.273.
2. Adjustment of High Light
A. Adjust SUB BRIGHT, so that "Y" axis indicates 150.
B. Adjust R-DRIVE, so that "Y" axis indicates 0.277.
C. Adjust B-DRIVE, so that "X" axis indicates 0.271.
Adjustment Procedure
1. Adjust the Focus to thin all the Lines by Focus 1 Control. / (Prefer
to thin the Vertical Lines than Horizontal Line.)
2. Adjust the Focus to thin the Horizontal Lines by Focus 2 Control.
Adjustment Procedure
1. Connect a DC voltage meter to TPGM1-2pin (GM-Board)
2. Adjust the R4863 (GM-Board) so that the Vx Out at TPGM1-2pin
becomes 4.9 ± 0.05 V
3. Connect a DC voltage meter to TPGM1-1pin (GM Board).
4. Adjust the R4861 (GM-Board) so that the Vy Out at TPGM1-1pin
becomes 4.9 ± 0.05 V
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