Electrostatic Focus; On Screen Display Character Position - Mitsubishi Electric WT-42311 Service Manual

[CRT Circuit]

11. Electrostatic Focus

Measuring
-----
Instrument
Test Point -----
------
Ext. Trigger
Measuring
------
Range
Input Signal
Monscope & Crosshatch
Video Input
Input Terminal
[On Screen Display]
12.Character Position
Measuring
-----
Instrument
Test Point
-----
Ext. Trigger
------
Measuring
------
Range
Video Signal (HD/NTSC)
Input Signal
ANT-A/DTV
Input Terminal
MODEL: WT-42311 / WT-A42
Purpose:
To set electrostatic focus to the optimum point.
Symptom:
Poor focus.
Note: This adjustment must be performed after the Sub Contrast adjustment.
Static Focus Adjustment
1. Supply a Monoscope signal to a Video Input
2. Activate A/V Reset
3. Select Red, Green or Blue rasters using the table below.
3. Set the Red, Green and Blue Focus VRs for optimum focus at the top center of
the picture..
Raster Color Sele ction
Color Raster
Red
Green
Blue
Purpose
To position the character display horizontally.
Symptom: Incorrect display position
1. Supply a Monoscope signal to the Video or RF Input.
2. Select the Monoscope as the source for the main picture (Input button).
3. Activate the Service Mode, HR Function.
4. Use the Adjust Right/Left buttons to center the display horizontally.
(A = B)
5. Save data and exit the Service Mode..
Page 30
Activation Code
MENU-2-2-5-9-1
MENU-2-2-5-9-2
MENU-2-2-5-9-3