Mitsubishi Electronics VS-60609 Lens Focus Symptom Blurred picture, Focus Verification

MODELS: VS-45609 / VS-50609 / VS-55609 / VS-60609 / VS-60719 / VS-70709

[Focus]		Purpose:		To set focus to the optimum point.
5. Electrostatic Focus		Symptom:		Blurred picture.
Measuring	--------	Note: These adjustments must be performed after Sub Contrast Adjustment.
Instrument
Test Point	RQ Connector	General
		1.	Reset the AV Functions
Ext. Trigger	------
		2.	Red, green or blue rasters can be activated by using the Convergence Mode
Measuring	-------		(Table 1).
Range
Input Signal	Monoscope/Crosshatch	Electrostatic Focus
		1.	Supply a Monoscope signal to the Video Input. (Do Not use a Crosshatch.)
Input Terminal	Video Input
		2.	Activate a red raster.
		3.	Adjust the Red VR-FOCUS for optimum focus.
		4.	Repeat steps 2 and 3 for green and blue rasters.

Focus Verification

CONVERGENCE MODE		1.	Supply a Crosshatch signal to the Video Input.
(MENU-0-1-5-9)
		2.	Verify good focus on the Crosshatch
COLOR	PRESS	3.	If necessary, readjust focus using the Monoscope pattern.
RED	1
GREEN	2
BLUE	3

[Focus]	Purpose:	To set the Lens position for optimum focus
6. Lens Focus	Symptom:	Blurred picture.

Measuring	--------
Instrument
Test Point	--------
Ext. Trigger	------
Measuring	-------
Range
Input Signal	Monoscope
Input Terminal	Video Input

Note: This adjustment must follow item 6 (Electrostatic Focus). Perform this adjustment for RED, GREEN, and BLUE monochrome pictures.

1.Supply a VIDEO signal (Monoscope).

2.Cover the Red and Blue Lens (producing a green raster).

3.Adjust the Green Lens for best focus at the center of the Monoscope pattern. Note: Attach a white paper to the screen center. During adjustment,

observe the picture on the screen from inside for easier adjustment.

4.Repeat Steps 2 and 3 for the Red and Blue monochrome pictures.

5.Supply a crosshatch pattern and confirm the crosshatch lines at all four sides are the same width.

6.If not, check the Centering and Static Convergence adjustments.

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