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

[Video Circuit]

 

Purpose:

To set the beam current to its’ optimum level.

11. Sub Contrast

Symptom:

Excessive or insufficient contrast.

 

 

 

 

 

 

 

Measuring

 

DC milliammeter

Note: This adjustment must follow the Black Level Adjustment.

Instrument

 

 

Test Point

 

+ DT #3

 

 

 

 

 

 

- DT #1

1.

Supply a Grayscale signal to the Video Input.

 

 

 

Ext. Trigger

 

------

2.

Enter the Service Mode, VCJ Function.

 

 

 

3.

Select Item “1 SCT”, before going to Step 4.

Measuring

 

3 MA

 

4.

Connect the DC milliammeter to the DT connector.

Range

 

 

 

 

 

• Positive lead to pin 3

Input Signal

 

Grayscale

 

 

 

• Negative lead to pin 1

 

 

 

 

 

 

 

5.

Adjust Item “1 SCT” to set the total CRT current value to 860 ±15ua.

Input Terminal

 

Video Input

 

6.

Disconnect the meter.

 

 

 

 

 

 

7.

Save data and exit the Service Mode.

 

 

 

 

 

 

 

 

SERVICE MODE

Activate …….. MENU-0-1-5-7

Function …...………..AUDIO

Item No. ……….…….VIDEO

Adjust Data ….…….ADJUST

Save Data …. ………ENTER

Exit …………..MENU (twice)

[PIP Circuit]

 

Purpose:

To match the main and sub pictures color.

12. Color and Tint

Symptom:

Different color between the main and sub pictures.

(PIP Insert Picture)

 

 

 

 

 

 

 

 

Measuring

-----

1.

Supply a Color Bar signal to the Video or RF Input.

Instrument

 

Test Point

-----

2.

Select the Color Bars as the source for the main picture (Input button).

3.

Activate the single insert PIP mode .

 

 

Ext. Trigger

------

4.

Select the Color Bars as the PIP source.

5.

Exit the PIP mode (PIP button)

 

 

Measuring

-----

6.

Enter the Service Mode, PIP Function.

Range

 

7.

Select Item “3 SCL1” (the single insert is displayed)

Input Signal

Color Bars

8.

Use Items “2 CSAT” and “1 HUE” to match the color of the sub picture to that

 

 

 

 

of the main picture.

Input Terminal

Video or RF Input

 

9.

Save data and exit the Service Mode.

 

 

SERVICE MODE

Activate …….. MENU-0-1-5-7

Function …...………..AUDIO

Item No. ……….…….VIDEO

Adjust Data ….…….ADJUST

Save Data …. ………ENTER

Exit …………..MENU (twice)

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Mitsubishi Electronics VS-60609 service manual PIP Circuit Purpose, Color and Tint Symptom, PIP Insert Picture