White Balance - Panasonic TX-34P800R Service Manual

4.11. White Balance

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. Degauss the CRT face.
6. Connect the photo sensors of the Colour Analyser to the
CRT.
Note:
CRT cut off adjustment is completed.
FIG. 15
Item/Preparation
8. Wedge A shown in Fig. 15 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.
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 0.267 ±
0.010
c. Adjustment B-CUT OFF, so that x axis indicates 0.255 ±
0.010
2. Adjustment of High Light
a. Adjust SUB BRIGHT, so that "Y" axis indicates 150.
b. Adjust R-DRIVE, so that y axis indicates 0.272 ± 0.010
c. Adjust B-DRIVE, so that x axis indicates 0.267 ± 0.010
15
TX-34P800R