Colour Purity
1. Set the Brightness and Contrast controls to their maximum
positions.
2. Operate the TV set for 60 minutes.
3. Fully degausse the picture tube by using an external
degaussing coil.
4. Apply a crosshatch pattern signal and adjust the static
convergence magnets to the approximately correct position.
5. Receive a black and white signal.
6. Set the control as follows:
Red................minimum
Green.............minimum
Blue.................minimum
Press the Shipping button on the remote control twice to
select CRT Adjustment Mode to select low light.
7. Loosen the clamp screw for the Deflection Yoke A in Fig. 10
and move the Deflection Yoke as close to the purity magnet
as possible.
8. Adjust the purity magnetic rings so that a vertical green field
is obtained at the centre of the screen.
Fig. 6
9. Slowly push the Deflection Yoke and set it where a uniform
green field is obtained.
Fig. 7
10. Re-adjust the Low Light controls to their correct settings
and make sure that a uniform white field is obtained.
11. Tighten the clamp screw A in Fig. 10.
Convergence
1. Apply a crosshatch pattern signal and Normalize Contrast
control to the maximum positions.
2. Adjust Brightness until the grey position of the crosshatch
pattern just becomes black.
3. Adjust the Red and Blue line at the centre of the screen by
rotating the R-B static.
Fig. 8
4. Adjust Red and Blue with Green line at centre of the screen
by rotating (RB)-G static convergence magnetic rings.
5. Lock convergence magnets with silicone sealer.
6. Remove the DY wedges and slightly tilt the Deflection Yoke
vertically and horizontally to obtain the good overall
convergence.
Fig. 9
7. Fix the Deflection Yoke by reinserting the DY wedges. Refer
to Fig. 10.
8. If purity error is found, repeat “Colour Purity” adjustment.
Before Colour Purity, Convergence and White Balance adjustment are attempted,
V. Height, H. Centre and Focus adjustments must be completed.
9
TC-21PM50R
Summary of Contents for TC-21PM50R
Page 4: ...1 5 GP3 Chassis Block Diagram 4 TC 21PM50R ...
Page 11: ...4 Schematic Diagram 12 TC 21PM50R ...
Page 12: ...13 TC 21PM50R ...
Page 15: ...4 1 3 A BOARD 3 4 1B 1C 2C 3C 4C 5C 6C 2B 3B 4B 5B 6B 7B 8B 9B 10B 11B 12B 16 TC 21PM50R ...
Page 16: ...4 1 4 A BOARD 4 4 1C 2C 3C 4C 5C 6C 17 TC 21PM50R ...
Page 17: ...4 2 L BOARD 4 2 1 L BOARD 1 2 1A 2A 3A 4A 5A 6A 7A 18 TC 21PM50R ...
Page 18: ...4 2 2 L BOARD 2 2 1A 2A 3A 4A 5A 6A 7A 19 TC 21PM50R ...
Page 19: ...5 Parts Location 20 TC 21PM50R ...
