Side By Side Sub Picture Tint; Side By Side Sub Picture Color - Mitsubishi Electric WT-46807 Service Manual

MODELS: WT-46807 / WS-55807 / WS-55857 / WS-55907 /WS-65807 / WS-65857 / WS-65907 / WS-73907
[Video Circuit]

5. Side by Side Sub Picture Tint

Measuring
-----
Instrument
-----
Test Point
------
Ext. Trigger
Measuring
------
Range
Input Signal NTSC
Input Terminal
RF or Video
[Video Circuit]
6. Side by Side Sub Color
Measuring
Oscilloscope
Instrument
Test Point EB connector pin 5
------
Ext. Trigger
Measuring 200mV/div
Range
20usec/div
Color Bars
Input Signal
Video Input
Input Terminal
Purpose:
To match the sub picture color to that of the main picture.
Symptom:
Main and sub pictures colors differ.
1. Supply an NTSC signal.
2. Select the NTSC signal as the source for both the main and sub pictures.
3. Activate Side by Side POP
3. Activate the Adjustment mode.
4. Select Item "1 TNTS" in the Sub Matrix Function.
5. Adjust data to match the sub picture color to that of the main picture.
(If "1 TNTS" range is short, adjust Items "4 VPDS" and "5 UPDS")
CIRCUIT ADJUST MODE
Activate ........ MENU-8-2-5-7
Function .................AUDIO
Item No. .................VIDEO
Adjust Data ...........ADJUST
Save Data .... .........ENTER
Exit ..............MENU (twice)
Purpose
To set the sub picture color level.
Main and sub pictures color levels differs.
Symptom:
Note: Let the set run for at least one minute before making this adjustment.
1. Supply a color bar signal.
2. Select the color bar signal as the source for both the main and sub picture.
3. Connect an oscilloscope to pin 5 of the EB connector.
4. Activate the Side by Side mode.
5. Activate the Service Mode
6. Select Item "2 COLS" in the Sub Matrix function.
7. Adjust data so the amplitude of the Sub signal equals that of the main signal.
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CIRCUIT ADJUST MODE
Activate ........ MENU-8-2-5-7
Function .................AUDIO
Item No. .................VIDEO
Adjust Data ...........ADJUST
Save Data .... .........ENTER
Exit ..............MENU (twice)