Deflection Circuit Geometry Adjustments - Mitsubishi Electric WS-A48 Service Manual

[Deflection Circuit]
14: Deflection Geometry
Height & Width Adjustment
Measuring
-----
Instrument
Test Point -----
------
Ext. Trigger
Measuring
-----
Range
Input Signal
Monoscope (NTSC & HD)
Video & DTV Inputs
Input Terminal
CIRCUIT ADJUST MODE
Activate ........ MENU-2-2-5-7
Function .................AUDIO
Item No. .................VIDEO
Adjust Data ...........ADJUST
Save Data .... .........ENTER
Exit ..............MENU (twice)
MODELS: VS-A50 / WS-A48 / WS-A55 / WS-A65
Purpose: To set the height, width and linearity of the raster.
Symptom: Incorrect height, width and/or linearity.
Preliminary:
1. DO NOT change the initial values for "#8 VLIN" in the Defl. Jungle Function.
2. DO NOT exceed the following VHGT adjustment ranges:
NTSC ... from -4 to +10
HD ... from -10 TO +5
NTSC Mode
1. Supply an NTSC Monoscope signal to a Video Input.
2. Select the Monoscope as the signal source.
3. Activate the Adjustment Mode, JNGL Function.
4. Select and adjust each of the following items.
• "7 VHGT" ... so the vertical marker sum = 4
• "1 HWD" ... so the horizontal marker sum = 7
5. Save data and Exit the Service Mode.
HD Mode
1. Supply an HD Monoscope signal to the DTV HD Inputs.
2. Select the DTV Inputs as the signal source (Input button)
3. Activate the Service Mode, Defl. Jungle Function.
4. Select and adjust each of the following items.
• "7 VHGT" ... so the vertical marker sum = 2
• "1 HWD" ... so the horizontal marker sum = 5
5. Save data and Exit the Service Mode.
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