Quadro CTV-37D10 TXT, Service Manual

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COLOR PURITY ADJUSTMENT
(1) Before color purity adjustment,warm up the TV set over 15 minutes and fully degauss.
(2) Receive pure white signal in AV status and set the TV receiver dynamic.
(3) Go to factory mod MENU2. After write down the values of R-BIAS and B-BIAS, set the values of R-
BIAS and B-BIAS zero.
(4) Loosen the clamp screw of the deflection yoke and pull the deflection yoke towards color purity
Magnetic loop.
(5) Adjust color purity magnetic loop to make the green area at the center of CRT screen.
(6) Slowly push the deflection yoke toward the front of CRT and set it where a uniform green field is
Obtained. Tighten the clamp screw of the deflection yoke.
(7) Restore the values of R-BIAS,G-BIAS AND B-BIAS.
CONVERGENCE ADJUSTMENT
(1) Receive a dotted pattern. Set the TV receiver dynamic.
(2) Loose the convergence magnet clamperrrrr and align red with blu dots at the center of the screen by
rotating(R,B) static convergence magnets.
(3) Align Red/Blue with green dots at the center of the screen by rotating(RB-G) static convergence
magnet.
(4) Remove the DY wedges and slightly tilt the deflection yoke horizontally and vertically to obtain the
good
Purity Magnet
RB-G RB
Magnet Clamper
Static Magnet
Purity and Convergence Adjustment
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