Centering & Static Convergence - Mitsubishi WS-48315 Service Manual

[Convergence Circuit]
16. Centering and Static
Convergence
Measuring
Instrument
Test Point
Ext. Trigger
Measuring
Range
Input Signal
Input Terminal
CONVERGENCE MODE
Activate ........MENU-0-3-5-9
Misc. ........................."6"
Coarse........................"5"
Fine ..........................."4"
Color (R,G or B)......AUDIO
Item No..................VIDEO
Adjust/Move..........ADJUST
Cursor Toggle.........ENTER
Save & Exit.....MENU (twice)
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MODELS: WS-48315 / WS-55315 / WS-65315
Purpose:
Symptom:
Preliminary
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Degauss the shield cover and bracket unit of the CRT assembly and chassis.
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DO NOT degauss the Centering and Alignment Magnet Assemblies.
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CAUTION: On models WS-48315, WS-55315 and WS-65315, Do Not adjust the
Alignment Magnets instead of the Centering Magnets.
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NTSC -- Monoscope
HD mode
HD -- Monoscope
1. Supply an HD Monoscope signal to the DTV Inputs.
Video & DTV Inputs
2. Select the DTV Inputs as the signal source (Input button).
3. Enter the Convergence Coarse mode.
4. Set the data for the "HSTA" and "VSTA" items to:
5. In the Coarse Green mode:
6. In the Coarse Red mode, use the Red Centering Magnet to converge
7. In the Coarse Blue mode, repeat Step 6 using the Blue Centering magnet and
8. Exit the Convergence mode.
SD mode
1. Supply an NTSC Monoscope signal to a Video Input.
2. Select the Monoscope as the signal source (Input button).
3. Enter the Convergence Coarse Green mode.
4. If needed, center the green raster using "1 HSTA" and "2 VSTA" adjustments.
5. In the Coarse Red mode, use "1 HSTA" and "2 VSTA" adjustments to converge
6. In the Coarse Blue mode, repeat step 5 to converge the blue on the green.
7. Exit the Convergence Mode
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To converge red, green and blue at the center of the screen
Color edging over the entire picture.
GREEN RED
HSTA = 0 HSTA = 50
VSTA = 0 VSTA = 0
• Center the Green Raster using the Green Centering Magnet.
• Rotate the Green Deflection Yoke to correct any tilt.
red on the green at the center of screen. Correct any red tilt with the Red
Deflection Yoke.
the Blue Deflection Yoke.
the red on the green at the center of the screen.
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BLUE
HSTA = -50
VSTA = 0