Focus; Geomagnetic; Sub Bright - Panasonic TX-34P800R Service Manual

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TX-34P800R

4.12. Focus

1. Receive a cross-hatch pattern signal or Monoscope pattern.

2. Select 4.3 Mode

3. Set the brightness to centre (50%) and contrast (80%)

1. Demagnetize the GM-Board around its perimeter with the

Demagnetizer.

2. Set to control:

Geomagnetic.....Auto

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.

Item/Preparation

Adjustment Procedure

1. Adjust the Focus to thin all the Lines by Focus 1 Control.

(Prefer to thin the Vertical Lines than Horizontal Line.)

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

Adjustment Procedure

1. Adjust Sub Bright so that brightness level becomes 1 ± 0.2

cd/m

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