Panasonic TX-29P180T, Service Manual

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5.10. WHITE BALANCE
Item/Preparation Adjustment Procedure
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.
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 0.248.
c. Adjustment B-CUT OFF, so that x axis indicates 0.247.
2. Adjustment of High Light
a. Adjust SUB BRIGHT, so that “Y” axis indicates 150.
b. Adjust R-DRIVE, so that y axis indicates 0.264.
c. Adjust B-DRIVE, so that x axis indicates 0.258.
5.11. FOCUS
Item/Preparation Adjustment Procedure
1. Receive a cross-hatch pattern signal. 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.
5.12. GEOMAGNETIC
Item/Preparation Adjustment Procedure
1. Demagnetize the GM-Board around its perimeter with the
Demagnetizer.
2. Set to control:
Geomagnetic.....Auto
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
5.13. SUB BRIGHT
Item/Preparation Adjustment Procedure
1. Receive the sub bright pattern.
2. Picture Menu:
BRT............. .....CENTER
COLOUR..........CENTER
CONT.......... .....MAX
3. Connect the photo sensor of the Colour Analyser to the
center of the CRT.
1. Adjust Sub Bright so that brightness level becomes 1 ± 0.2
cd/m
2
.
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TX-29P180T